Senior Full Stack Software Engineer Python React jobs in London – Page 3 | RoboApply Jobs

Senior Full Stack Software Engineer Python React jobs in London· Page 3

Results 41–60 of 4,084 for “Senior Full Stack Software Engineer Python React” in London.

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GetGround logo
Full-time|On-site|London

At GetGround, we strive to revolutionize property investment, making it safer, quicker, and more accessible for landlords. Our belief in AI's transformative power drives us to enhance the landlord journey, reimagining the entire process of property investing. Our vision is to disrupt the £1.7 trillion UK asset class, creating a future of buy-to-let that is d…

Apr 3, 2026
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Fleek logo
Full-time|On-site|London

Join Us in Revolutionizing the Fashion Supply Chain!Did you know that the fashion industry generates over 100 billion garments each year, with a staggering 60% ending up in landfills? This occurs not due to a lack of demand but because the current supply chain for secondhand fashion is outdated, manual, and disorganized.At Fleek, we are on a mission to transform this broken system. Our goal is to make secondhand fashion the primary choice, and we are building the infrastructure that will power the global secondhand clothing market. This includes a B2B marketplace and advanced AI systems that will digitize the supply chain.With Fleek, vintage stores, online resellers, and retail buyers can easily source graded secondhand inventory directly from wholesalers and rag houses across various countries. Our innovative tool, FleekSort, utilizes AI to grade, price, and categorize items with just a photo, turning a historically opaque trade into a clear, searchable, and tradable global inventory.Since our inception in 2022, we've successfully diverted 9 million items from landfills and have experienced remarkable growth, tripling in size annually. We have secured approximately $50 million in funding from prestigious investors like a16z, Y Combinator, Burda Principal Investments, and HV Capital. Our advisory board boasts industry leaders from renowned companies such as Depop, Shopify, and Postmates.Today, we cater to thousands of resellers and retailers across the UK, Europe, and the US. As the secondhand fashion market is projected to reach $350 billion by 2027, Fleek is establishing the AI-driven operational and financial backbone for secondhand commerce on a global scale.We are looking for passionate individuals who are eager to create meaningful change and thrive in a fast-paced environment. If this excites you, read on!About the RoleAs a Senior Full Stack Engineer in our product engineering team with a focus on frontend development, you will report directly to our CTO, Sanket Agarwal (formerly of Google and Postmates). You'll collaborate closely with a product manager and designer within a small, senior team dedicated to enhancing user growth and optimizing the core consumer experience.Why This Role is UniqueAt Fleek, we are creating a vibrant, video-first marketplace where each item is one-of-a-kind, supply is unpredictable, and the purchasing experience must cater to both professional resellers making high-volume decisions and first-time buyers venturing into an entirely new market.You will be part of our Growth team, reimagining core user journeys from scratch, enhancing the discovery experience, streamlining the buying flow, and improving seller onboarding.

Feb 11, 2026
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hiya logo
Full-time|On-site|London, UK

Role overview hiya seeks a Full-Stack Software Engineer based in London to focus on mobile applications. This position involves designing, building, and maintaining mobile solutions that support both user experience and business objectives. What you will do Design and develop mobile application features, taking ideas from initial concept through to deployment Maintain and enhance existing mobile solutions Collaborate with colleagues across different teams to deliver reliable, high-quality software Work on projects aimed at improving the user experience

Apr 22, 2026
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Anduril Industries logo
Full-time|On-site|London, England, United Kingdom

Anduril Industries is a forward-thinking defense technology firm dedicated to revolutionizing military capabilities across the U.S. and its allies through state-of-the-art technology. By integrating the expertise and innovative business models of modern tech leaders into the defense sector, Anduril is reshaping the design, production, and sales of military systems. Central to Anduril’s suite of solutions is Lattice OS, an AI-driven operating system that converts vast data streams into a dynamic, 3D command and control interface. As we navigate a new era of strategic competition, Anduril is devoted to delivering unparalleled advancements in autonomy, AI, computer vision, sensor fusion, and networking technology to military operations swiftly and effectively.ABOUT THE ROLEThe Maneuver Dominance team at Anduril is at the forefront of creating operationally significant, multi-asset autonomy solutions. Our focus lies in pioneering the next wave of autonomous capabilities by enhancing existing Anduril platforms such as Ghost and Altius, integrating third-party platforms within the Lattice ecosystem, and developing groundbreaking systems poised to redefine battlefield dynamics. We engineer software services and autonomy algorithms designed to tackle some of the most challenging problems faced by our clients.As a Full-Stack Engineer on the Maneuver Dominance team, you will conceptualize and implement systems for fleets of diverse autonomous systems operating in intricate environments. This role necessitates technical agility across the technology stack, from backend services and infrastructure to frontend user interfaces. Above all, engineers in the Maneuver Dominance team embody a “Whatever It Takes” ethos, executing projects in a timely, scalable, and efficient manner while prioritizing mission objectives and making sound engineering choices to ensure high-quality outcomes.KEY RESPONSIBILITIESDevelop robust, high-performance backend services that manage fleets of autonomous systems, utilizing C++ and Rust for scenario execution, physics modeling, and autonomy.Design and implement APIs and data pipelines that facilitate the complete mission lifecycle, from design and planning through to live operations and post-mission analysis.Enhance the operator experience by creating frontend components that visualize real-time sensor data and mission status, including interactive map overlays, telemetry dashboards, and mission planning interfaces.Deploy and sustain services within a Kubernetes infrastructure to ensure reliability and optimal performance.Manage application integration, collaborating with gRPC/protobuf and other platform components to establish smooth workflows.Work closely with robotics engineers, autonomy specialists, and other team members to foster innovation and drive project success.

Feb 16, 2026
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Lindus Health logo
Full-time|Hybrid|London

Join Our MissionAt Lindus Health, we're revolutionizing clinical trials for the next century of biology. Our innovative approach accelerates the testing of new treatments, ensuring that patients gain access to breakthroughs faster. By modernizing outdated infrastructures, we are reducing costs and eliminating delays that hinder patient access to safe and effective therapies. Our ImpactSince our inception in March 2021, we have successfully powered over 100 clinical trials, impacting tens of thousands of patients. Backed by a recent $55M Series B funding round led by Balderton Capital, along with support from Creandum, Firstminute, Seedcamp, and Visionaries, we are poised for substantial growth. Work CultureJoining Lindus means being part of a dynamic and mission-driven environment:High-Impact, Mission-Driven Work: Directly contribute to transforming healthcare and improving patient lives.Fast-Paced Growth & Ownership: Take on significant responsibilities and play a key role in shaping our company's success.Collaborative, No-Ego Culture: Work alongside passionate individuals in a supportive, informal atmosphere where creativity and fun are valued.Are you ready to shape the future of clinical trials? We'd love to connect! About the RoleWe are seeking a talented mid-level Full Stack Software Engineer to join our team and enhance our platform that powers the next generation of clinical trials. Help us scale our product to efficiently manage complex trials and expedite the delivery of new treatments to patients!This position will be based onsite in London, with a hybrid office arrangement after an initial onboarding period at our headquarters near London Bridge. We anticipate your presence in the office for at least three days a week.

Jan 27, 2026
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Eucalyptus logo
Full-time|On-site|UK - HQ - London

About EucalyptusAt Eucalyptus, we are dedicated to ensuring that good health lasts a lifetime. With over 1 billion individuals battling obesity globally, leading to preventable chronic conditions, our mission is to create superior long-term care solutions.Euc is the innovative force behind Juniper, one of the largest weight-management programs in the world that integrates GLP-1 medication with personalized nutrition, movement support, and clinician-led care from prescribers, nurses, health coaches, pharmacists, and dietitians. Our published clinical research indicates that our comprehensive clinical and behavioral strategies enable patients to achieve four times more weight loss during their Juniper treatment.Our Growth Story:Achieved 130% year-over-year revenue growth while reducing cash burn by 90%, securing over $100M from notable investors such as BOND, NewView, Blackbird, and Airtree.Supported more than 350k patients struggling with obesity across five international markets.Received a selective NICE endorsement to deliver services to the NHS.Customized our offerings to meet the needs of thousands of patients in Germany and Japan. Help shape Juniper and our growing product ecosystem with full-stack impactThe Shop/Ecosystem squad is committed to diversifying Juniper into new product lines and areas of care, ensuring patients find the right products and services precisely when they need them. One of the most exciting projects will be a recommendations tool, developed in close collaboration with our Data Science team, aimed at enhancing how patients engage with Juniper and various product lines across both web and mobile platforms.

Feb 21, 2026
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Granola logo
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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Appvia logo
Full-time|£70K/yr - £80K/yr|Hybrid|London, England, United Kingdom

Role Overview Position: Senior Full Stack Developer (Java/React) with Security Clearance Eligibility Location: London, UK (Hybrid – 1 to 2 days per month in the office) Contract Type: Permanent, Full-time Compensation: £70,000 - £80,000 base salary, plus 10% bonus, 10% equity, and benefits About Appvia Appvia delivers consultancy in cloud, platform, and solutions engineering. The company helps organizations modernize software systems, improve developer productivity, and adopt cloud-native methods for sustainable delivery. Appvia works on complex, high-impact projects across public and private sectors, focusing on quality, scalability, and reliability. Areas of expertise include modern application development, domain-driven design, and optimizing architecture and testing for better delivery outcomes. What You Will Do Senior Full Stack Developers at Appvia join a growing software engineering team, supporting a large modernization and AI-driven transformation project. The work is hands-on and client-facing, involving the design and implementation of modern software solutions in complex environments. Projects often involve building new systems within existing legacy landscapes, introducing new architecture, tools, and engineering standards for long-term scalability. This role reports to a Principal Software Engineer and contributes to both project delivery and the ongoing development of Appvia’s engineering practice. Requirements Eligible for UK Security Clearance (SC), which requires: British Passport or Indefinite Leave to Remain (ILR) Residency in the UK for the past five years No criminal record or financial irregularities Extensive experience with React and modern front-end development Strong back-end development skills with Java (Spring Boot) Knowledge of Domain Driven Design (DDD) Experience working with microservices architecture Full-stack experience across UI, API, and data layers Background in cloud-native environments, preferably AWS Interest or experience in AI-assisted development to boost productivity and quality Comfort working directly with stakeholders and guiding teams Interview Process Initial discovery conversation with Talent Acquisition Technical interview with the Engineering Team Final interview with Leadership

Apr 14, 2026
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Burendo logo
Full-time|On-site|London, England, United Kingdom

Join Burendo, an award-winning consultancy renowned for crafting remarkable products and services through cutting-edge technology. We partner with organizations to enhance their value delivery and foster exceptional customer experiences. Our mission is straightforward: to empower organizations to create a meaningful impact on people, society, and the planet by leveraging efficient, user-friendly technology that quickly resolves challenges.At Burendo, we believe in the power of collaboration to achieve extraordinary outcomes.Our unique approach distinguishes us. We pride ourselves on a pragmatic delivery mindset—thinking big, planning effectively, adapting swiftly, and maintaining a sharp focus on results, regardless of the complexity involved. We are passionate about driving innovation, questioning conventional wisdom, and nurturing collaboration at every phase. At Burendo, our commitment to people is central to our mission. We value partnerships, welcome diverse perspectives, and uphold fairness in all interactions. We are eager to share our knowledge, using our expertise to empower others and facilitate long-term success for organizations.We recognize that exceptional engineers come from diverse backgrounds, each bringing unique specialties. At Burendo, we are embarking on exciting new projects, and we seek individuals eager to contribute across the technological spectrum and engage in all phases of the software development lifecycle.

Mar 3, 2026
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Theodo logo
Full-time|On-site|London

Role Overview Join us as a Full Stack Engineer at Theodo, where you'll have the chance to work directly with clients, including CEOs and co-founders, to understand their unique requirements and develop tailored solutions. You'll engage in hands-on learning from day one, guided by seasoned developers who will mentor you in managing your own projects. As you progress, you'll take on greater responsibilities, mentor junior developers, and become a key technical advisor within your team. If you excel at solving complex problems and are eager to expand your technical skill set while tackling new challenges, this is the opportunity for you.In this role, you will be part of a small, dynamic team focused on creating innovative web and mobile applications for our clients. Collaboration with agile and technical coaches will be essential as you build scalable solutions using the latest technologies.

May 29, 2025
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Capimoney logo
Full-time|On-site|London

Role overview Capimoney is looking for a Staff Full Stack Engineer in London. This role calls for broad experience across both front-end and back-end development. The engineer will help design, build, and maintain scalable applications that support Capimoney’s products and users. What you will do Design and develop software across the stack, from user interfaces to backend services Maintain and improve existing applications for performance and reliability Work closely with teams from different disciplines to deliver software that meets business goals Contribute to the overall user experience and product quality Location This position is based in London.

Apr 15, 2026
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Runna logo
Full-time|On-site|Runna London

Join Our Visionary Team to Create the Premier Training Platform for RunnersAt Runna, we empower everyday runners to achieve their best by developing an exceptional app that offers top-tier training, coaching, and community support. Whether you're aiming to enhance your 5k performance or prepare for your inaugural marathon, we're here to guide you every step of the way.Our growth trajectory is remarkable! In November 2023, we successfully secured a $6.5M funding round led by JamJar, with contributions from Eka Ventures, Venrex, and Creator Ventures. In 2024, we were honored to be recognized by Apple as one of three global finalists for the iPhone App of the Year, showcasing the innovation and impact of our platform. The journey continued with our acquisition by Strava in 2025!Our aspirations are ambitious: we aim to be the leading global training platform for millions of runners worldwide. As we evolve with purpose, we seek passionate individuals who want to contribute to something meaningful and impactful. With Strava's recent acquisition propelling our mission forward, this is an extraordinary time to become a part of our journey. The Growth Team You’ll Be JoiningWe are on the lookout for a skilled, inquisitive, and experimentation-driven Senior Full Stack Engineer to join our Growth Engineering team. This team is responsible for critical aspects of the user journey at Runna, focusing on both web and app platforms to craft high-quality experiences that convert first-time visitors into dedicated subscribers. You will collaborate closely with product, design, and data teams, as well as our founders and CTO, to enhance how new users discover and engage with Runna.Your ResponsibilitiesDesign, develop, test, and deploy high-impact user journeys and subscription funnels aimed at transforming curious visitors into active, engaged subscribers.Create and execute experiments across both web and app (including onboarding processes, paywalls, and plan discovery experiences) to optimize conversion at every stage of the user journey.Work collaboratively with Product, Design, and Data teams to identify opportunities, establish clear success metrics, and make informed decisions based on experimental outcomes.Partner with other teams to ensure users enjoy a seamless and consistent experience as they navigate through various products and platforms.Implement and sustain the instrumentation, tracking, and tools necessary for understanding user behavior, quickly identifying issues, and accurately measuring impact.Take ownership of features and initiatives that drive user engagement and retention.

Feb 23, 2026
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Affinidi logo
Full-time|On-site|London, England, United Kingdom

About the CompanyAffinidi is a pioneering technology firm committed to revolutionizing data ownership. We empower businesses and individuals to take control of their data, offering a holistic approach to managing their digital identities while ensuring their privacy and security.Our innovative technology facilitates decentralized digital identity solutions, affirming our belief that everyone has the right to own and manage their data. We are dedicated to building a trustworthy ecosystem for digital credentials that allows secure data and service exchange across various sectors and borders.About the Role:We are actively seeking a solution-oriented and experienced Staff Software Engineer (Full Stack) to join our dynamic team. In this role, you will be instrumental in developing and enhancing our platform, contributing to both front-end and back-end solutions, and working collaboratively with cross-functional teams.

Apr 2, 2026
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Apollo Research logo
Full-time|On-site|London

Application Deadline: We are actively conducting interviews and aim to fill this position promptly once we identify a suitable candidate. ABOUT THE ROLEWe are in search of talented Full-Stack Software Engineers who are passionate about developing tools for advanced AGI safety research. Your role will involve building and maintaining evaluation libraries and tools to monitor and manage our LLM traffic.KEY PROJECTSYour primary responsibility will be to create tools for analyzing model evaluation results. Here are some features you might develop and implement within your first 6 months:- LLM-driven search functionality to locate intriguing segments in evaluation transcripts.- Comparative views that illustrate discrepancies in conversations and scores across two evaluation runs.- Capability to view and analyze dialogues with coding agents (e.g., Cursor, Claude Code) alongside evaluation transcripts.- Real-time streaming of results for ongoing evaluations.- Collaborative editing of evaluation logs that automatically updates metrics and other derived data.Consider this as crafting an 'IDE for evaluations'.In addition to the main projects, you may also explore auxiliary initiatives such as:- Automated evaluation pipelines designed to reduce the time from accessing a new model for pre-deployment testing to analyzing key results and disseminating them.- LLM agents and MCP tools that automate internal software engineering and research tasks, with safeguards to prevent significant failures.- Telemetry API and enhancements to our existing tools to monitor usage and improve reliability.- Upstream enhancements to the Inspect framework and ecosystem, including support for evaluating contemporary agentic scaffolds.

Dec 5, 2025
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Herondata logo
Full-time|On-site|London, UK

(Applicants must be based in London, UK)About the RoleWe are on the lookout for talented and driven Full Stack Engineers to join our innovative team at Herondata. As a pivotal member of our fast-growing AI startup, you will play a crucial role in crafting elegant technical solutions that address our customers’ diverse challenges. If you are passionate about delivering high-quality code and are eager for a rewarding new challenge, we want to hear from you!Key ResponsibilitiesIn this hands-on role, you will focus on developing products that provide real solutions for our customers. Your responsibilities will include:Creating, maintaining, and enhancing backend services and APIs.Developing and designing new UI and web components.Integrating with third-party services and AI models.Assisting in bug triage, investigating production incidents, and contributing to postmortems and root cause analyses.Engaging in code reviews and collaborating with both technical and non-technical teams and stakeholders.What We SeekOur ideal candidate will:Be passionate about building impactful solutions: You enjoy shipping code rapidly, valuing MVPs and customer outcomes more than perfection. You take ownership of the deployment of your work.Excel at solving complex technical challenges: You can break down problems into simple, effective solutions, maintaining a fact-based and thoughtful approach.Focus on scalability: You prioritize impactful action while ensuring scalable infrastructure and engineering processes. You bring innovative practices to improve our systems.Contribute within our tech stack: We are currently utilizing Python/Flask/FastAPI for the backend, Terraform/GCP/AWS for infrastructure, and React/JavaScript/TypeScript/Vercel for the frontend. Your ability to contribute and enhance our stack is essential.

Oct 1, 2025
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AND Digital logo
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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Axon Enterprise, Inc. logo
Full-time|On-site|London, England, United Kingdom

Join Axon, a leader in technology-driven public safety solutions, as a Senior Full Stack Engineer. In this role, you will leverage your expertise to develop innovative software solutions that empower law enforcement agencies around the globe. You’ll work on a diverse range of projects, collaborating with a talented team to build scalable applications that enhance efficiency in public safety.

Apr 29, 2026
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Fanvue logo
Full-time|Remote|Remote with London office

Join Us in Revolutionizing the Creator Economy with AIFanvue is a rapidly expanding platform at the forefront of creator monetization worldwide. Our AI-driven, creator-centric platform empowers creators to connect, engage, and earn directly from their audiences on a larger scale. After securing our recent Series A funding, Fanvue has achieved over $100M in annual recurring revenue and continues to experience triple-digit year-over-year growth, supporting countless creators and millions of fans globally.At the heart of Fanvue’s revenue model are our checkout and payment systems. This position is dedicated to developing fast, reliable, and scalable checkout and fintech solutions that significantly influence creator earnings, fan conversion, and overall revenue expansion. Your ResponsibilitiesWe are seeking a Full Stack Engineer to contribute to Fanvue’s checkout, payment, and fintech functionalities. This impactful role will focus on designing and managing end-to-end payment processes, encompassing frontend checkout experiences and backend payment services, subscriptions, and payouts.You will collaborate closely with Product, Design, and fellow engineers to rapidly deliver revenue-critical features while upholding high standards of reliability, security, and scalability. Key ActivitiesDesign, develop, and deploy comprehensive checkout and payment solutions across both web and backend platformsOwn and optimize frontend checkout processes to enhance conversion rates and reduce friction for usersDevelop and sustain backend services for subscriptions, messaging payments, and payoutsIntegrate with payment providers and manage retries, fallbacks, and edge case scenariosCollaborate intimately with Product and Design teams to explore monetization and conversion optimization strategiesEnsure payment systems are dependable, observable, and secure in a production environmentTroubleshoot and resolve issues across the entire stack, from user interface to payment processingLeverage data and experimentation to inform product and technical decisions Your ProfileProven experience in full stack engineering, with a strong focus on backend systemsProficient in navigating both frontend and backend codebasesExperience with contemporary web technologies including TypeScript, Node.js, React, and relational databases

Jan 16, 2026
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Abound logo
Full-time|On-site|London

About AboundAt abound, we are revolutionizing the landscape of consumer lending across the UK and beyond. By leveraging cutting-edge AI and Open Banking data, we strive to make fair and affordable personal finance accessible to a wider audience. Unlike traditional lenders who heavily depend on credit scores, we analyze the complete financial picture of our customers—considering their spending patterns and repayment capabilities—to build a nuanced understanding of their unique financial situations.Our approach has proven successful at scale. We have facilitated over £1.3 billion in loans directly to customers while achieving exceptional credit performance—for every 10 defaults anticipated by the industry, we experience only 3. Remarkably, we reached profitability just 2.5 years post-launch.With backing from over £2 billion from prestigious investors including Citi, GSR Ventures, and Deutsche Bank, we are recognized as one of Europe’s fastest-growing fintech companies (Sifted, CNBC). As we expand into new markets and product lines, we are on the lookout for driven individuals eager to learn, take ownership, and grow alongside us.We are seeking a talented Senior Python Engineer to join our engineering team. In this role, you will collaborate closely with our Finance team to design and implement automation solutions that enhance our core financial operations. You will be responsible for translating business needs into robust, maintainable systems that increase accuracy and efficiency across critical workflows.This position requires a candidate who blends strong technical acumen with a desire to understand the business intricacies. You will be empowered to independently scope and execute changes, manage stakeholder expectations, and ensure every enhancement is durable. Your contributions will play a vital role in maintaining the smooth and scalable operation of our financial processes.We value engineers who take initiative, enjoy tackling complex challenges, and excel at clarifying ambiguous requirements. You will thrive in our environment if you are motivated by creating systems that deliver tangible business impact, can articulate technical concepts to non-technical partners, and take pride in producing high-quality, well-designed code.At abound, you will immerse yourself in a culture that champions autonomy, curiosity, and continuous improvement. You will engage with a modern Python-based tech stack, gain in-depth insights into how financial operations function in a rapidly growing lending business, and have the opportunity to enact significant technical changes in collaboration with experienced stakeholders.

Nov 12, 2025
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Intercom logo
Full-time|On-site|London, England

At Intercom, we are redefining customer service through innovative AI technology. Our mission is to empower businesses to deliver exceptional customer experiences.Our advanced AI agent, Fin, is at the forefront of customer service AI, enabling businesses to provide continuous, high-quality support. When paired with our Helpdesk, it evolves into the Intercom Customer Service Suite, offering enhanced AI support for complex queries that necessitate human intervention.Since our inception in 2011, we have gained the trust of nearly 30,000 businesses worldwide, setting new benchmarks in customer service. Our core values drive us to push boundaries, work with urgency, and create substantial value for our clients.What’s the opportunity?Our website is the heart of our brand—serving as the primary resource for information about Intercom’s products and the leading source of leads for our demand generation team. Intercom.com and Fin.ai are pivotal in bridging awareness, product marketing, demand generation, and customer support, necessitating a robust and reliable infrastructure alongside sleek user-facing interfaces.We are seeking a Senior Full Stack Engineer to join our Team Web. This role is perfect for someone who is eager to create engaging front-end experiences while also developing the backend systems and tools that support them. You will significantly influence the future of our website, engaging with product marketers, designers, and engineers throughout the organization.Explore the team's latest work here.What will I be doing?Designing, building, and maintaining comprehensive web solutions, encompassing modern user interfaces, backend services, APIs, and infrastructure.Collaborating with design, brand, marketing, and content teams to ensure seamless, high-performing experiences across web and mobile platforms.Developing backend logic and APIs, managing data flows, and integrating systems with third-party platforms.Enhancing website performance by implementing best practices in front-end development, such as lazy loading and efficient asset management.Setting up and managing infrastructure using tools like Vercel, AWS, Cloudfront, Terraform, and CI/CD pipelines.

Jan 28, 2026

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