Full-Stack Engineer with Back-End Focus

Solve IntelligenceLondon

On-site Full-time

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Experience Level

Experience

Qualifications

We are looking for candidates with:Strong experience with back-end technologies and frameworks. Proficiency in front-end frameworks, particularly React. Experience in building scalable systems and APIs. Excellent problem-solving skills and a collaborative mindset. Ability to translate customer feedback into technical solutions.

About the job

At Solve Intelligence, we are not merely developing features; we are shaping the foundational infrastructure that aims to revolutionize the global legal and IP landscape.

The Role: Full-Stack Engineer (Back-End Focus)

We seek an exceptionally skilled engineer to assist in the rapid development of both the front-end and back-end of our innovative products. You will join a lean, highly talented engineering team based in London.

Key Responsibilities:

Foundation Scaling: Design and construct robust and scalable backend systems from the ground up to cater to a vast global market.
User-Centric UI: Collaborate on planning and refining our React-based front-end to ensure our sophisticated AI systems are user-friendly and widely embraced.
Product Development: Work alongside the founders to derive insights from customer feedback and translate them into actionable technical solutions.
Culture Building: Contribute to establishing the engineering culture and play a critical role in building a top-tier technical team.

About Solve Intelligence

We are a rapidly growing startup redefining how IP professionals operate.

Growth: Enjoying a 20-30% month-over-month revenue increase while serving over 100 IP teams (ranging from DLA Piper to premier tech boutiques).
Proven Efficiency: Users report efficiency improvements ranging from 50-90%.
Investment: Recently highlighted in Sifted following our $40M Series B funding round, bringing our total funding to $55M from notable investors including Y Combinator, 20VC, Visionaries, and others.

Your Team

You will collaborate directly with a founding team comprising AI PhDs and systems specialists:

About Solve Intelligence

Solve Intelligence is at the forefront of transforming the IP industry, leveraging cutting-edge technology to streamline workflows and enhance productivity for IP professionals.

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Full-Stack Engineer with Back-End Focus

Solve Intelligence

Full-time|On-site|London

At Solve Intelligence, we are not merely developing features; we are shaping the foundational infrastructure that aims to revolutionize the global legal and IP landscape.🏗️ The Role: Full-Stack Engineer (Back-End Focus)We seek an exceptionally skilled engineer to assist in the rapid development of both the front-end and back-end of our innovative products. …

Jan 5, 2026

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Full-Stack Engineer with Front-End Focus

Solve Intelligence

Full-time|On-site|London

At Solve Intelligence, we are revolutionizing the global Intellectual Property landscape with cutting-edge AI infrastructure. We are seeking an innovative Full-Stack Engineer with a Front-End Focus to shape the future of human interaction with next-generation AI technology. Role Overview: Full-Stack EngineerJoin our exceptionally skilled engineering team in London, where chat interfaces are just the beginning. Your contributions will go beyond dashboard creation to redefine UI/UX paradigms for AI-assisted legal workflows, crafting interfaces that did not exist just 18 months ago.Your Responsibilities:AI Interface Design: Spearhead the development of our user interface, transcending basic chat to create advanced, intuitive tools tailored for intricate IP processes.Feature Development: Quickly prototype and deploy new features informed by direct customer feedback from prestigious law firms.Full-Cycle Delivery: While your expertise lies in front-end development, you will also engage in back-end tasks to ensure smooth, reliable, and rapid feature implementation.Document Editor Integration: Take ownership of integrating and customizing sophisticated document editors (like TinyMCE/CKEditor) to meet the rigorous drafting needs of patent attorneys.Engineering Standards: As a key early team member, you will help establish benchmarks for code quality, development speed, and design excellence across our entire tech stack. About Solve IntelligenceWe are a rapidly growing startup that is transforming the Intellectual Property industry.Growth: Consistent 20-30% month-over-month revenue growth, serving over 200 global IP teams including DLA Piper and various tech boutiques and enterprises.Proven Efficiency: Our users report significant efficiency gains of 50-90% utilizing our AI platform.Investment: Recently highlighted in Sifted after our $40M Series B funding announcement, bringing our total funding to $55M from top-tier investors including Y Combinator, 20VC, Visionaries, and others.

Jan 5, 2026

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Junior Back End Engineer

Sensor Tower

Full-time|On-site|London

Fraud Alert:Beware of scammers creating fake job listings on other platforms. To ensure your application is considered, please submit your application exclusively through Sensor Tower's official website or through postings directly associated with Sensor Tower on platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request payment, credit card, or bank account details as part of the application process. All official communications from Sensor Tower will come from email addresses ending in sensortower.com. Interviews will be conducted via phone or Zoom, and we will not transition to other email services or texts. If you encounter any issues, please reach out to us. Remember to attach your resume when applying.Notice to Recruitment Agencies:Sensor Tower does not accept unsolicited resumes from third-party agencies. Please refrain from sending resumes to our job alias, Sensor Tower employees, or any other company location. We will not be liable for any fees related to unsolicited resumes and will not pay any agency or company without a signed agreement.About This Role:Are you passionate about developing products that leverage real-world, large-scale data? At Sensor Tower, we process vast amounts of data to provide insights for thousands of customers. We are seeking enthusiastic, early-career engineers eager to enhance their skills while collaborating with us to create fast, reliable systems that simplify data access and understanding.You will collaborate closely with seasoned engineers, contribute to impactful features from day one, and gain insights into the design, construction, and optimization of large-scale systems in a production environment.If you thrive on learning, problem-solving, and delivering real software that users depend on, we would love to hear from you. We have a strong history of rapidly advancing talented juniors, and this position offers a unique opportunity to work closely with senior leadership.Our Engineering Culture:We believe that "Simplicity is a prerequisite for reliability." We seek engineers who resonate with our core values:- Simplicity: We avoid unnecessary complexity, favoring existing tools and straightforward solutions over trendy new technologies.- Quality: We write code that is enjoyable to read, understanding that code is often read more than it is written. We do not cut corners and strive for high standards before deployment.

Feb 12, 2026

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Back End Engineer - New Ventures

iwoca

Full-time|Hybrid|London

Back End Engineer - New VenturesJoin us in a hybrid capacity at iwoca, located in London, United Kingdom (minimum one day in the office per week).About the Role:As a Back End Engineer on the Credit Compass team, you will play a pivotal role in designing and developing scalable, high-performance services that enhance small businesses' understanding of their credit health. You will work with rich data sources, including Open Banking and credit reports, to provide actionable insights that empower business owners.About iwoca:At iwoca, we recognize that small businesses need fast and flexible finance solutions. Our cutting-edge technology, data science, and exceptional customer service have already aided over 100,000 businesses with more than £4 billion in funding. We are on a mission to empower one million SMEs with the financial tools they need to thrive, making a lasting impact on the communities they serve.The Team:Join a dynamic and collaborative Credit Compass team dedicated to transforming complex financial data into clear, actionable insights. Our cross-functional group of engineers, product managers, designers, and analysts work closely to deliver outstanding features that enhance our customers' experience.

Feb 20, 2026

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Mid to Senior Back End Engineer - Ruby

Sensor Tower

Full-time|On-site|London

Fraud Alert:At Sensor Tower, we prioritize your safety during the application process. To be considered for a position, please apply exclusively through our official website or directly through recognized platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. We will never request payment or sensitive information such as credit card or bank details for job applications. All communications from us will originate from email addresses ending with sensortower.com. Interviews will be conducted via phone or Zoom, and no communication will occur through unverified email or text. If you encounter any suspicious activity, please let us know. Remember to attach your resume when applying.Recruitment Agency Notice:Sensor Tower does not accept unsolicited resumes from third-party recruitment agencies. Please refrain from sending resumes to our job alias, employees, or any other company locations. Sensor Tower will not be liable for any fees related to unsolicited resumes and will only pay agencies with a signed agreement.Role Overview:We are on the lookout for a talented Back End Engineer to join our team. You will play a crucial role in scaling our database operations and managing vast amounts of data (up to tens of terabytes). Your creativity and technical skills will be essential in deriving valuable insights and data.As a member of the Sensor Tower engineering team, you will contribute to developing top-notch products and features that enhance our user experience. In our agile and flat organizational structure, your input will directly influence the direction and execution of our projects.A Day in the Life:Interviewee: Engineering Team Lead - Sasha YelkovenkaDescribe a typical day as a Software Engineer.My role involves working extensively with large datasets, which are continuously growing. My primary responsibility is ensuring our customers can access this data swiftly and providing them with user-friendly tools for data utilization. I appreciate the culture of ownership at Sensor Tower.How do you collaborate with your remote team?We foster an excellent remote work environment, frequently collaborating via Zoom to leverage each other's expertise for improved outcomes.

Feb 11, 2026

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Back-end Engineer at CUR8 | London, Hybrid

CUR8

Full-time|Hybrid|London, England, United Kingdom

Join CUR8 as a Back-end EngineerAt CUR8, we are on a transformative mission to reshape the carbon removal landscape. With the pressing need to eliminate 5-10 Gigatonnes of CO₂ by 2050, our innovative platform empowers organizations worldwide to meet their carbon neutrality goals.As part of our dedicated Risk Engine squad, you will play a pivotal role in evaluating and refining high-quality carbon removal projects, ensuring our clients have access to reliable insights and data.Your collaboration with our Lead Software Engineer, Senior AI Engineer, and scientists will be vital in converting scientific criteria into robust, scalable software solutions.Key ResponsibilitiesDevelop Application Logic: Craft the code that manages data flow, from document ingestion to model result handling.Translate Science into Code: Work closely with Carbon Scientists to understand project criteria and develop corresponding code logic.Manage Unstructured Data: Create systems that can transform complex real-world inputs into structured, actionable data.Deliver Insights: Design APIs and data structures that present findings to customers in an intuitive user interface.Our Technology StackCore Back-end: GoData Stack: PythonDatabase: PostgreSQLInfrastructure: Google Cloud Platform, TerraformAI Tools: Claude, Gemini, GPTWhile expertise in both Go and Python is not essential, a willingness to engage with both is necessary.Your Technical ExpertiseExperience: A minimum of 2 years in building and maintaining backend software.Language Proficiency: Comfortable with a statically typed language (preferably Go).

Feb 13, 2026

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Senior Back End Engineer - German Market

iwoca

Full-time|Hybrid|London

Senior Back End Engineer - German MarketJoin us in a hybrid role based in London or work remotely from anywhere in the UK.About the RoleWe are seeking a skilled Senior Back End Engineer to develop and enhance the systems that drive iwoca's operations in the German market. You will collaborate within a dynamic, cross-functional engineering team tasked with building proprietary tools such as our CRM system, utilized daily by our German operations team. You will spearhead significant projects from inception to delivery, leveraging your technical expertise to enhance our services for small businesses while fostering the growth of the overall engineering team.Company OverviewAt iwoca, we understand the fast-paced world of small businesses. Opportunities can arise unexpectedly, and cash flow challenges can emerge overnight. That's why we offer flexible and responsive financial solutions tailored to the needs of SMEs. Our advanced technology, data science, and exceptional customer service empower business owners to act swiftly and confidently when it matters most. With over 100,000 businesses supported and more than £4 billion in funding provided, our dedicated team is on a mission to help one million SMEs thrive, making a lasting impact on their communities and economies.The TeamOur DE Tech team is an expanding group of engineers divided into three cross-functional teams. Together, we build and maintain essential systems—including underwriting, notifications, and account management tools—that empower over 300 colleagues in sales, credit, and collections. As our German business scales, these teams are innovating beyond incremental improvements to fundamentally enhance operational workflows, ensuring that we can respond quickly and reliably to the needs of our customers.Your ContributionsIn this role, you will engineer systems vital to both internal and external teams in delivering outstanding customer service. You will oversee engineering processes from problem identification to implementation, witnessing the direct impact of your work in everyday applications. Your designs will underpin back-end services that facilitate core operational tasks, including customer communications and underwriting.

Feb 13, 2026

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Back End Engineer at Thought Machine | London, UK

Thought Machine

Full-time|On-site|United Kingdom, London

At Thought Machine, we are on a transformative mission to eliminate outdated legacy technology from the banking sector. Our innovative core and payments technology, designed to operate seamlessly in the cloud, lays the groundwork for modern banking. This ambitious endeavor requires exceptional talent collaborating to create remarkable technology.In recent years, we've experienced rapid growth, expanding our team to over 550 professionals across our offices in London, New York, Singapore, Sydney, and our newly established Engineering Hub in Lisbon. With over £500 million raised in funding from esteemed investors such as Molten Ventures, Eurazeo, and JPMorgan Chase, we are poised for continued success.Our workplace culture is designed to foster creativity and productivity, allowing our team to produce top-notch work while enjoying the journey. Recognized for our outstanding employee satisfaction, we have consistently received high ratings on Glassdoor and have been acknowledged by Sifted magazine as a leading fintech employer in the UK, with one of the most generous employee share packages in the industry. As featured in Global Finance Magazine, we are among the world's most innovative fintechs and have been named one of Europe’s fastest-growing companies by the Financial Times for two consecutive years.As a Back End Engineer at Thought Machine, you will play a pivotal role in leading the development of our Vault product. We are committed to excellence, adopting best practices in continuous deployment and monorepo style development.While you will thrive in a fast-paced development environment, we expect you to produce high-quality, production-ready code.

Dec 9, 2025

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Senior Full Stack/AI Engineer with Backend Focus

AND Digital

Full-time|On-site|London, England, United Kingdom

Senior Full‑Stack/AI Engineer (Backend-leaning)About Us:At AND Digital, we are a forward-thinking tech company committed to enhancing digital delivery and bridging the digital skills gap. Since our inception in 2014, we have partnered with organizations to create exceptional digital products and to strengthen their digital teams.Our mission is to leave a lasting legacy for our clients. We achieve this by fostering close relationships within our regional offices or ‘Clubs’, ensuring that our partners receive priority service from a dedicated local team.This innovative approach has led to significant success for both our clients and ourselves, as demonstrated by our impressive organic growth since 2014. We now boast over 1,300 talented individuals across Clubs throughout the UK and Europe, with ambitious plans for global expansion in the coming years.Join us on our mission to close the world’s digital skills gap!What You Will Contribute:Core Technical Skills:Extensive hands-on experience in backend engineering, proficient in one or more languages such as Java, Node.js, TypeScript, Python, or Go, with the flexibility to work across multiple languages as necessary.Proven track record in designing and implementing scalable, resilient, and maintainable backend systems, including REST/GraphQL APIs, event-driven architectures, and distributed services.Hands-on experience with AWS (including services such as Lambda, ECS, DynamoDB, SQS/SNS, API Gateway, Step Functions, etc.) and a strong grasp of cloud-native patterns. Familiarity with GCP, Azure, or other cloud platforms is a plus.Solid experience in Infrastructure as Code (preferably Terraform), CI/CD pipelines, and modern deployment methodologies.Comfortable working across the entire tech stack, contributing to frontend codebases when required, while maintaining a primary focus on backend and systems engineering.Demonstrates technical leadership by shaping architectural direction, reviewing designs, and exemplifying high-quality engineering practices.A strong foundation in system design, including trade-off analysis, performance considerations, observability, and operational readiness.Able to take ownership of complex technical challenges, make pragmatic decisions, and articulate reasoning effectively to both technical and non-technical stakeholders.AI & Emerging Technologies:Hands-on experience integrating AI into backend systems, such as orchestrating AI services, creating AI-driven workflows, or utilizing AI tools to enhance engineering productivity.Experience in developing AI-enabled systems (including solutions based on LLM or RAG) from MVP or proof-of-concept to production-ready implementations, with an emphasis on reliability, evaluation, security, and maintainability.Ability to discern where AI can meaningfully enhance backend systems (e.g., classification, summarization, anomaly detection) as opposed to traditional algorithms.

Feb 11, 2026

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Senior Back End Engineer at Thought Machine | London

Thought Machine

Full-time|On-site|United Kingdom, London

At Thought Machine, we're on a mission to revolutionize banking by eradicating legacy technology from the world's banks. Our innovative core and payments technology operates natively in the cloud, laying the groundwork for modern banking solutions. Achieving this ambitious goal requires exceptional talent collaborating to create cutting-edge technology.In recent years, we've experienced explosive growth, expanding our team to over 550 professionals across various locations, including London, New York, Singapore, Sydney, and our newly launched Engineering Hub in Lisbon. With over £500 million in funding, our esteemed investors include Molten Ventures, Eurazeo, Intesa Sanpaolo, Temasek, Nyca Partners, JPMorgan Chase Strategic Investments, and Standard Chartered Ventures.Our company culture fosters excellence and encourages our team to produce top-tier work while having fun. We have been recognized for our outstanding workplace culture, earning one of the highest Glassdoor ratings among UK fintech companies and offering the industry's most generous employee share package. Global Finance Magazine named us one of the world's most innovative fintechs, and the Financial Times recognized us as one of Europe's fastest-growing companies for two years running, alongside being hailed a UK Best Employer for 2026.As a Senior Back End Engineer, you will play a vital role in leading the development of Thought Machine’s Vault product. We are committed to achieving excellence in this role, adhering to best practices in continuous deployment within a monorepo style development framework.Although our development pace is rapid, you will be expected to produce high-quality, production-ready code.Key ResponsibilitiesDesign, implement, and develop scalable, high-performance microservices using industry best practices.Create automated unit tests, integration tests, and more.Collaborate with other engineering teams to ensure features are added in a coherent and structured manner.Manage and debug deployments from testing environments through to production.Translate customer requirements into actionable, trackable tickets.Essential QualificationsA minimum of 6 years of experience as a Software Engineer.Proficiency in either Python or Golang.Experience in developing automated tests and integrations.

Dec 9, 2025

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Senior Full Stack Engineer

Ki Insurance

Full-time|On-site|London, England, United Kingdom

Who Are We? At Ki Insurance, our influence can be seen in various groundbreaking headlines. From insuring space shuttles to world tours, wind farms, and even the legs of footballers, our impact is substantial.Our mission aims to digitally disrupt and transform a 335-year-old industry. Collaborating with Google and UCL, we have developed a platform that leverages algorithms, machine learning, and large language models, enabling insurance brokers to receive quotes in mere seconds rather than days.As the largest global algorithmic insurance carrier, Ki is the fastest-growing syndicate within the Lloyd's of London market, achieving a remarkable $100 million in profit within just three years.Our teams consist of diverse talents working in an agile, cross-functional environment, dedicated to delivering the best possible experience for our customers. With ambitious goals ahead, we seek exceptional minds to challenge the status quo and help us explore new heights.Your Role:As a Senior Full Stack Engineer, you'll be an integral part of our development team, contributing to our broker platform, which is vital to Ki's success. Our multi-disciplinary team combines expertise in software and data engineering, full stack development, platform operations, algorithm research, and data science. We focus on delivering impactful features through an iterative and analytical approach.Your Responsibilities: Develop robust and scalable software for critical web-based applications.Create visually appealing, functional, and efficient web and mobile sites that enhance these applications.Design, build, test, document, and maintain APIs and integrations.Implement quality control through industry-standard practices such as automated testing, pair programming, and code reviews.Collaborate with the Product team to translate end-user requirements into effective technical solutions.Document technical designs and analyses.Evaluate current system architecture for growth and improvement opportunities.Construct mock-ups or prototypes for exploring and troubleshooting new initiatives.Engage with the Product team and UX designers to review designs, implement new features, and ensure an exceptional user experience.Investigate new ideas and emerging technologies, rapidly developing prototypes.Promote and enhance the engineering team’s principles and methodologies.Act as a domain expert for Ki’s core technologies.Mentor and coach colleagues in engineering and business aspects.

Nov 10, 2025

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Senior Full Stack / AI Engineer (Frontend Focus)

AND Digital

Full-time|On-site|London, England, United Kingdom

Senior Full-Stack/AI Engineer (Frontend-Focused)About Us:At AND Digital, we are a forward-thinking technology company committed to enhancing digital delivery and bridging the digital skills gap. Since our inception in 2014, we have empowered organizations to create exceptional digital products and cultivate robust digital teams.Our philosophy centers around creating lasting legacies for our clients. By fostering close partnerships with our regional Clubs, we ensure that our clients receive prioritized support from teams located nearby.This innovative model has fueled our success, reflected in our remarkable organic growth since 2014. Today, we boast a talented workforce of over 1,300 professionals across Clubs in the UK and Europe, with ambitious plans for global expansion in the coming years.Join us in our mission to close the global digital skills gap.Your ContributionsEssential Technical SkillsExtensive hands-on experience in delivering comprehensive JavaScript/TypeScript solutions, showcasing strong expertise in React, Next.js, Node.js, and the wider JavaScript ecosystem.Proficient in developing high-quality, production-ready systems with a solid understanding of performance, accessibility, security, and maintainability.Exhibits technical leadership within teams by influencing implementation strategies, guiding architectural decisions, and exemplifying engineering excellence through active contributions.Strong grasp of cloud infrastructure (preferably AWS) and CI/CD pipelines, including knowledge of application lifecycle management in production environments.Adopts a DevOps mindset to ensure efficient delivery workflows, enhanced observability, and operational readiness.Capable of taking ownership of intricate technical challenges, making pragmatic compromises, and effectively communicating decisions to both technical and non-technical stakeholders.Comfortable operating across the technology stack, with the ability to contribute meaningfully to backend services when necessary, despite a frontend inclination.AI & Emerging TechnologiesHands-on experience implementing AI in practical settings, such as integrating AI APIs/services, crafting AI-enhanced user experiences, or utilizing AI-assisted development tools responsibly.Adept at discerning where AI can add genuine value in comparison to traditional engineering methodologies.Skilled in assessing risk, cost, maintainability, and user impact when proposing AI-driven solutions.Curious about emerging AI trends, frameworks, and tools, with the ability to apply them in practical contexts rather than purely experimental settings.Capable of advising clients on realistic AI possibilities, helping them differentiate between hype and practical benefits.Consulting & Client EngagementExperience in consulting or client-facing roles, demonstrating confidence in navigating ambiguity and fostering client relationships.

Feb 11, 2026

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Full Stack Engineer

Trainline

Full-time|On-site|London

Join Trainline as a Full Stack Engineer and contribute to the evolution of digital travel. In this role, you will design and implement scalable web applications that enhance user experiences. Collaborate closely with product managers and designers to shape innovative features that meet customer needs.

Mar 20, 2026

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Senior Back-End Software Engineer at Marcura | London

Marcura

Full-time|On-site|London, England, United Kingdom

About Marcura:Marcura stands at the forefront of maritime technology and operations, playing a pivotal role in facilitating nearly one-third of the global seaborne commodity trade. Our innovative platforms, which encompass software solutions, data intelligence, and payment processing, are integral to the digital transformation journey within the maritime sector. We are currently on the lookout for a Senior Back-End Software Engineer to join our dynamic and impactful team, contributing to the success of one of the industry's most innovative organizations.Role Overview:In the position of Senior Back-End Software Engineer, you will take charge of the architecture, design, development, and testing of scalable Compliance and RegTech solutions. Your mission will be to construct and maintain secure, high-performance applications utilizing Django REST Framework and Python (backend) to enhance counterparty onboarding, risk assessment, and regulatory screening processes.Your responsibilities will include overseeing code and tests to ensure the robustness of APIs, seamless integrations, and adherence to industry standards such as GDPR and ISO 27001. You will champion secure coding practices, implement embedded testing (shift-left), and drive automation efforts, collaborating closely with product managers, UX designers, and compliance specialists to ensure alignment between technology and business objectives. Staying abreast of industry trends, you will introduce innovative solutions in full-stack development, AI, and compliance automation.Key Responsibilities:Develop and manage APIs that facilitate onboarding, screening, and entity intelligence, ensuring optimal performance, version management, and traceability.Enhance product capabilities by integrating new data-driven features (such as search, risk scoring, relationship mapping) while maintaining system stability.Incorporate ElasticSearch for superior query performance and analytics on a large scale.Collaborate with data and other platforms/services to support risk assessment and compliance automation.Work in close partnership with product teams, UX designers, and compliance experts to ensure technical solutions align with business strategies.Adopt a shift-left testing methodology, embedding unit, integration, and end-to-end tests within the development lifecycle, minimizing dependence on external QA resources.Implement industry best practices for secure coding, data privacy (GDPR), and compliance automation, ensuring regulatory adherence.Ensure security, scalability, and maintainability of full-stack applications.Establish best practices for data modeling, ETL processes, and regulatory compliance (GDPR, ISO 27001) in data-centric applications to guarantee data integrity, consistency, and security.Stay updated on emerging technologies in full-stack development, AI, and compliance automation, proposing innovative ideas to elevate products and processes.

Apr 3, 2026

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Senior Java Back-End Developer

Methods Business and Digital Technology Limited

Full-time|On-site|London, England, United Kingdom

About Methods Business and Digital Technology Limited Methods Business and Digital Technology Limited is an established IT services consultancy based in the UK, with more than 30 years of experience. The company works closely with central government departments and agencies to improve public sector operations. With annual revenue exceeding £100M, Methods is known for delivering business and technical solutions that focus on people, safety, and long-term readiness. Methods takes a human-centric approach, aiming to create value and sustainability for clients, employees, communities, and the environment. The company emphasizes collaboration, continuous improvement, and a culture where people enjoy their work while striving for excellence. While Methods primarily serves the public sector, it is also building a private sector client base. Since joining the Alten Group in early 2022, the company has continued to grow and innovate. Role Overview: Senior Java Back-End Developer This London-based position focuses on back-end Java development within a team that supports both public and private sector clients. The role involves contributing technical expertise, collaborating with colleagues and clients, and helping deliver solutions that meet high standards for quality and safety.

Apr 14, 2026

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Senior Full Stack Software Engineer

Faculty

Full-time|On-site|London

Join our innovative team at Faculty as a Senior Full Stack Software Engineer. In this pivotal role, you will leverage cutting-edge technologies to design and implement robust software solutions, driving our mission to harness AI for impactful outcomes. Collaborating with cross-functional teams, you will address complex challenges and deliver high-quality products that meet user needs.If you are passionate about technology, enjoy problem-solving, and thrive in a dynamic environment, we want to hear from you!

Feb 24, 2026

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Full Stack Software Engineer

Humaans

Full-time|On-site|London

About UsAt Humaans, we are pioneering the future of workplace infrastructure, developing innovative software solutions for rapidly growing companies that operate on a global scale and are venturing into new territories.What initially began as a basic record-keeping system has transformed into a comprehensive platform designed to manage personnel across the globe. Our agentic AI layer, Athena, enhances our capabilities, enabling intelligent orchestration that connects workflows across HR, IT, Finance, and Operations. This empowers organizations to act promptly and confidently, revolutionizing traditional work methodologies.We collaborate with forward-thinking teams across Europe and the US, ranging from AI-driven firms like Lovable, Poolside, Fyxer AI, and Tandem Health to established high-growth companies scaling through international expansion and acquisitions, including Quantexa, Sellpy, Manychat, Gigs, Croud, and Threecolts. These teams are not just purchasing software for its features; they seek leverage—the ability to operate efficiently and effectively as complexities grow.We are proud to have secured $20 million in venture funding from some of the most esteemed entrepreneurs and investors in the technology sector, including Lachy Groom (Physical Intelligence), Stewart Butterfield (Slack), Tobias Lütke (Shopify), Dylan Field (Figma), Jeff Weiner (LinkedIn), Claire Johnson (Stripe), Oliver Jay (OpenAI), Jay Simmons (Bond), alongside Y Combinator, Moonfire, Frontline Ventures, Pathlight Ventures, and Exor.If you possess a strong ambition and are eager to tackle challenging problems with a nimble team during a pivotal moment in our industry, we invite you to join us.Our Technology StackOur current technology stack includes TypeScript, JavaScript, React, Node, Postgres, and Redis. We utilize GitHub for version control and continuous integration, deploying our services on Kubernetes within the Google Cloud Platform. We offer a public REST API, and our web client employs a real-time WebSocket API. We focus on delivering quality user-facing features and their implementation while maintaining a rapid development pace through concentrated efforts and robust foundational tools.Your ResponsibilitiesContribute to shaping the product from concept to launch.Develop end-to-end features, resolve bugs, enhance infrastructure, and provide customer support.Write backend TypeScript using Node, Postgres, Redis, and Kubernetes.Implement frontend TypeScript in React.Expand our third-party integration marketplace.Participate in technical architecture planning.Assist the sales and marketing teams.

Mar 28, 2021

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Full Stack Product Engineer

StackOne

Full-time|On-site|London

About StackOne:StackOne serves as the AI Integration Gateway for SaaS products and AI Agents. Supported by GV and Workday Ventures with $24M in funding, we empower creators of SaaS platforms and AI Agents to implement hundreds of scalable, precise, and enterprise-grade integrations. Our platform fuses 25,000 pre-mapped actions across 200 connectors, an AI-driven integration development toolkit, and robust security measures, including real-time architecture, managed authentication and permissions, and comprehensive observability.Become part of our rapid journey to redefine the future of agent-driven integrations.With an AI-native integration toolkit that ensures real-time execution, managed authentication, granular permissions, and full observability, all grounded in safety, we are intensifying our focus on AI R&D and establishing our own lab to expand the possibilities of tool calling for agents: training specialized LLMs that excel beyond general-purpose models in critical areas: precision, reliability, and safety in agentic execution.About the RoleWe are seeking adept full-stack engineers who are quick to deliver, possess a systems-oriented mindset, and are passionate about scalability, performance, and usability. You will develop core APIs, enhance infrastructure, and create developer tools and user interfaces that facilitate easy, secure, and predictable tool execution.This role encompasses a wide scope: primarily backend-focused, product-savvy, and highly technical. Anticipate engaging with APIs, authentication, infrastructure, and frontend development to construct the foundational elements that enable agents to take tangible actions.

Sep 19, 2025

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Senior Full-Stack Engineer at Tipalti | London

Tipalti

Full-time|On-site|London, England, United Kingdom

Overview Join Tipalti, a dynamic fintech company located in the heart of London, dedicated to automating financial workflows for small and medium-sized businesses. Our engineering culture is robust, collaborative, and focused on making a tangible impact for our clients. As a Senior Full-Stack Engineer, you will merge hands-on engineering skills with a product-oriented mindset. You will define requirements, engage in technical discussions, and influence user experiences while managing the entire software development lifecycle. Responsibilities Develop robust, efficient, and well-tested code across the technology stack. Create new features and enhancements that align with product priorities. Participate in design and architecture discussions, shaping the technical direction. Review code with team members, ensuring clean code practices and quality standards are met. Collaborate closely with Product Managers to clarify requirements and propose solutions. Proactively identify questions, edge cases, and assist in refining specifications. Provide technical insights into prioritization and product decisions. Communicate effectively with designers, engineers, and stakeholders. Share knowledge and mentor colleagues as needed. Engage with external partners and vendors for integration work when necessary. Requirements Experience building across the full stack and a keen interest in learning new technologies. A passion for writing clean, maintainable, secure, and well-tested code. Strong collaboration skills and a preference for team environments. A curiosity about customer needs and the ability to translate them into technical solutions. A commitment to continuous learning and knowledge sharing within the team. Preferred Tech Skills Proficiency in JavaScript / TypeScript, Node.js, and React (or similar frameworks). Experience with REST APIs or microservices architecture. Familiarity with MongoDB. Knowledge of cloud services, particularly AWS. Why Join Tipalti? An open, inclusive, and supportive engineering culture.‍ Opportunities to build products utilized by some of the world’s fastest-growing companies. Equity options in a late-stage scale-up.

Mar 18, 2026

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Full Stack Product Engineer

Granola

Full-time|On-site|London

Hello! Welcome to Team Granola If you haven't yet, we invite you to explore our innovative platform and discover why joining us could be the right move for you.We are on the lookout for a passionate engineer who thrives in a dynamic, fast-paced environment where creativity and innovation are encouraged.In this pivotal role, you will devise new strategies to maximize user satisfaction through the application of LLMs and improve the overall performance of our platform. You will engage directly with users to identify their challenges and tailor solutions that address their needs. As a key member of our founding team, you will play a significant role in scaling Granola to accommodate the next 100x users.Your Responsibilities:Lead the development of user-centric features from conception to launch, focusing on areas such as agentic workflows and real-time collaboration, including innovative prototyping.Enhance the application for optimal performance, ensuring speed, scalability, and reliability.Collaborate with users to understand their needs and design effective solutions.Work alongside a diverse team of engineers, product managers, designers, and other stakeholders to craft a groundbreaking product.Your Ideal Background:Hands-on engineering experience in tech-focused companies.Strong skills in TypeScript, Node.js, and React.js (familiarity with Framer Motion, Tailwind, and Radix is a significant advantage).Solid understanding of relational databases, specifically Postgres.Experience with cloud technologies (preferably AWS and Terraform).As a Person, You:Are a dedicated builder at heart.Enthusiastic about working in our London office most of the time.Enjoy the startup environment, ideally with prior experience in early-stage companies or a strong interest in the zero-to-one phase.Appreciate collaborating with kind, ambitious, and practical individuals.Have a keen interest in AI/ML, though direct experience is not mandatory.Thrive in a fast-paced atmosphere where priorities and requirements are ever-evolving.Join us in revolutionizing the way users interact with technology!

Sep 22, 2025

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