Senior Full-Stack Engineer - AI Agent Platform

Ebury empowers ambitious businesses to achieve global growth, and we extend the same philosophy to our team members. We champion innovation, collaboration, and problem-solving, creating an inclusive environment where everyone feels valued, supported, and motivated to excel.If you are a collaborative individual eager to revolutionize the way businesses operat…

Hello! Who are we?At Ki Insurance, our innovations are making headlines globally. From insuring space shuttles and world tours to safeguarding wind farms and even footballers’ legs, we cover it all.Our mission? To disrupt and revolutionize a market that has existed for 335 years. In collaboration with Google and UCL, we have developed a cutting-edge platform that utilizes algorithms, machine learning, and large language models to provide insurance brokers with quotes in mere seconds instead of days.As the largest global algorithmic insurance carrier and the fastest-growing syndicate in the Lloyd's of London market, we proudly achieved $100 million in profit within three years.Our diverse teams collaborate in an agile, cross-functional environment, striving to create the ultimate customer experience. With big ambitions ahead, we need brilliant minds to help us challenge the status quo and reach new heights.What’s your role?As a Staff Full-Stack Engineer on our Engineering team, you'll provide technical leadership for delivery squads and the broader engineering organization. Together with our engineering leadership, you will uphold engineering excellence and maintain high-quality standards through a culture of continuous improvement. You'll be hands-on, delivering impactful software directly and leading initiatives independently.Your responsibilities will include:Creating robust and scalable software for critical web-based applications.Developing engaging, efficient, and reusable web and mobile sites that enhance our applications.Designing, building, testing, documenting, and maintaining APIs and integrations.Implementing quality control measures through automated testing, pairing, and code reviews.Collaborating with the Product team to translate end-user requirements into effective technical solutions.Documenting technical designs and analyses.Evaluating current system architecture to identify areas for growth and improvement.Building mock-ups or prototypes to explore and troubleshoot new initiatives.Working closely with Product teams and UX designers to ensure top-notch user experiences.Exploring new ideas and emerging technologies to develop prototypes rapidly.Fostering a culture of continuous improvement throughout the team.

Join Our Innovative Team as a Full Stack EngineerAt Unity Advisory, we are pioneering the future of professional services in an AI-driven landscape. Our firm operates on a lean, conflict-free model that prioritizes client success and integrates advanced technology throughout all our processes.With no audit practice, we are unburdened by traditional conflicts and legacy structures, enabling us to act swiftly and collaboratively. Our flat organizational structure fosters an environment where talented individuals can excel and create significant value for our clients.We blend deep advisory knowledge with state-of-the-art data, AI, and commercial insights, helping our clients tackle complex challenges with speed, intelligence, and clarity. At Unity Advisory, we are transforming the delivery of expert advisory services through innovative engagements.Your RoleWe are in search of a skilled Full Stack Engineer to become a vital member of our team, focusing on the development of our Core Internal AI Platform.In this internal-facing role, you will create end-to-end software solutions that support AI-enabled tools and workflows utilized across our firm. Your responsibilities will encompass frontend, backend, and platform layers—designing, building, and maintaining production-grade systems that incorporate data, AI features, and user-facing applications.This hands-on position is ideal for an individual who takes ownership of features from initial concept to final deployment and thrives in a dynamic, high-responsibility environment.Key ResponsibilitiesDesign, develop, and maintain comprehensive full-stack applications to enhance our internal AI platform and workflows.Create scalable backend services, APIs, and data integrations that drive AI-powered functionalities.Develop user-friendly and high-performance interfaces that enable users to interact with complex, data-driven, and AI-integrated systems.Incorporate AI and data features into applications and internal tools seamlessly.Work collaboratively with AI engineers, data engineers, and product stakeholders to deliver cohesive end-to-end solutions.Implement strong engineering practices across all stages: development, testing, deployment, monitoring, and observability.

Role overview jobsforhumanity seeks a Full Stack AI Engineer based in London. This position combines front-end and back-end development to create AI-driven features and enhance user experiences. The work directly contributes to the company’s mission. What you will do Design and build AI solutions for web applications Collaborate with teams from different disciplines to deliver scalable products Participate in all stages of the software development lifecycle, from planning through deployment Use analytical thinking and creativity to address practical challenges with AI Requirements Background in both front-end and back-end development Ability to work with cross-functional teams Strong analytical and creative problem-solving abilities Interest in building AI technologies that serve real-world needs

At Thought Machine, we are on a daring mission to eliminate outdated technology from banks around the world. Our innovative core and payments technologies, designed to operate seamlessly in the cloud, are shaping the future of banking.Since our inception, we have rapidly expanded to a talented team of over 550 professionals across various locations including London, New York, Singapore, Sydney, and our new Engineering Hub in Lisbon. With over £500m in funding from esteemed investors such as Molten Ventures, Eurazeo, and JPMorgan Chase, we are well-positioned for continued growth.We pride ourselves on fostering a vibrant workplace culture that encourages creativity and excellence. Recognized by Sifted magazine for our exceptional Glassdoor ratings and generous employee share packages, we are also honored to be named one of the world's most innovative fintechs by Global Finance Magazine and acknowledged by the Financial Times as one of Europe’s fastest-growing companies for two consecutive years.As a Full Stack Engineer at Thought Machine, you will play a vital role in our engineering team, which is committed to adopting best practices and leveraging modern technologies. You will tackle complex engineering challenges and create robust, scalable, and secure code that ensures an exceptional user experience.You will take full responsibility for transforming requirements into engineering designs, task breakdowns, and implementations, building both backend services and frontend experiences. Your work will cater to a diverse range of clients, from large financial institutions to regional banks, allowing for customized user experiences tailored to various personas.This is a full-time, permanent position based in our London office, requiring a minimum of three days onsite each week while offering the flexibility to work four days a week.

Innovative Music Technology - On-Demand Vinyl ProductionJoin elasticstage as a Senior Software Engineer and be part of a revolution in the music industry. We have developed a groundbreaking technology that allows for the production of on-demand vinyl records and created a web platform that empowers music creators to effortlessly create and sell their products globally through our store without incurring any costs. We collaborate with top record labels, streaming platforms, digital service providers, distributors, and renowned global artists to deliver a comprehensive solution for physical music media. Our innovative approach provides small and emerging artists with seamless access to offer vinyl and CDs to their fans, supported by our planned production and fulfillment centers across Europe, the USA, and Asia.The vinyl industry has experienced over a 20% annual growth for the past 16 years, and CDs are seeing a resurgence for the first time in two decades. By 2030, the number of music creators worldwide is expected to reach almost 200 million, further accelerated by AI technology. Many artists are eager to have their music available on vinyl or CD for their friends, family, and fans. Our scalable on-demand technology makes it possible for them to sell records at around $30 without high costs or minimum orders. At elasticstage, we provide easy and affordable access to this expanding market.This position is perfect for a Senior Software Engineer experienced in Node.js with a solid understanding of full-stack development, including building APIs and backend services in PHP. You will play a vital role in both customer-facing applications and the backend systems that facilitate ordering, production, and fulfillment processes.You will collaborate with a cross-functional team of product managers and operational staff to create reliable and scalable solutions that connect digital experiences with physical production.Join us to help elevate a fast-growing, high-profile industry disruptor!

About the Role Join Bluefish AI as a Senior Full-Stack Engineer, where you'll play a pivotal role in merging product innovation, infrastructure, and AI-enhanced development. In this position, you'll design and construct scalable web applications, contributing to the technical backbone of our cutting-edge AI marketing platform. Your collaboration with AI engineers, product managers, and designers will ensure that we deliver features that are not only technically robust but also meet our customers' needs. We seek an individual with a strong product-oriented mindset who is genuinely invested in user outcomes beyond mere implementation. As a key team player, you will foster a culture of accountability, uphold high engineering standards, and drive continuous improvement. This includes mentoring fellow engineers, engaging in thoughtful design discussions, and helping the team maintain speed without sacrificing quality. This opportunity allows you to take ownership of critical systems, influence the technical roadmap, and contribute to the evolution of AI-powered marketing technology. This position is associated with our London office, but we offer remote working options for candidates within the UK.

At Synthesia, we are redefining the future of communication through our leading AI video platform, embraced by over 90% of Fortune 100 companies. Established in 2017 and headquartered in London, our presence spans across Europe and the United States, with a diverse team dedicated to innovation.As the AI landscape evolves, we are committed to enhancing visual communication and fostering enterprise skill development, ensuring that individuals are empowered to excel and remain integral to the success of their organizations.After a successful Series E funding round that secured $200 million, our valuation has reached $4 billion, with total funding exceeding $530 million from esteemed investors like Accel, NVentures (Nvidia's venture capital), Kleiner Perkins, GV, and Evantic Capital, as well as founders and executives from Stripe, Datadog, Miro, and Webflow.About the RoleYou will take on an end-to-end role, contributing to our client application built in React and our robust monolithic backend developed in Python, while ensuring secure feature releases to our customer base.You will own long-term projects that require breaking down complex challenges into manageable, iterative steps for delivery and validation.Collaboration with the product manager will be key, allowing you to ideate solutions focused on commercial problems and shape product direction.Your work will be evaluated through established data pipelines and frameworks to assess the impact of your features on our business objectives, enabling you to pivot as needed.You will also be tasked with considering the team's long-term direction, ensuring we build the engineering capabilities necessary to tackle future challenges over the next 6-12 months. What We're Looking For:A minimum of seven (7) years of experience in software engineering, with at least 3 years in a senior or lead role.Experience in a high-performing engineering team, whether in a scale-up environment or an established organization recognized for its outstanding engineering culture.Strong capability across the tech stack, with in-depth knowledge of server-side development and backend technologies. Backend-focused experience is acceptable if you're willing to assist on the frontend occasionally.Proficiency in relevant engineering practices and tools that enhance productivity and performance.

Plain builds customer support software for B2B companies. Our mission: help organizations move from reactive support to building real customer relationships. Teams like Cursor, Vercel, and Granola use Plain to streamline customer interactions, improve team collaboration, and strengthen workflows with AI-powered tools. The B2B support landscape is changing quickly. AI is shifting support from a siloed function to something that touches the whole company, often across platforms like Slack and Discord. Old approaches, slow, manual, disconnected, no longer fit. This role follows a hybrid model. Expect to spend three days each week in our London office. What you will do Build across the stack: frontend, backend, and everything in between. Ship features that are fast, reliable, and a pleasure for users. Shape product and technical direction by working closely with design, engineering, and leadership. Partner with customers to understand their needs and create thoughtful solutions. Help foster a product-focused engineering culture. What we look for Experience delivering features end-to-end, especially in fast-moving teams. Initiative and strong problem-solving skills; able to drive projects and improve how things work. Focus on customer success; values user experience as much as code quality. Interest in engaging with customers and shaping the product, not just executing tasks. Care for craftsmanship and enjoys building simple, effective, polished products. Wants to grow in a collaborative team and have a say in company practices.

Join Our Mission at DELLIAt DELLI, we are dedicated to empowering the independent economy, supporting the makers, creators, and producers whose work influences the world around us. We envision a future where each creator has a reliable, intelligent partner that alleviates the chaos of daily operations, allowing them to concentrate on their passion.Every day, countless small businesses waste valuable time on unseen tasks — the administrative duties, the endless messages, the clarifications, and late-night reconciliations that keep their operations afloat. This invisible burden of independence often detracts from the core work that truly matters.We believe that commerce should feel organic and seamless once more.A baker should not struggle with a barrage of emails, calls, and spreadsheets that do not integrate.A retailer should not have to navigate disjointed channels to grasp inventory levels or availability.In our envisioned environment, AI agents will serve as the connective fabric, listening to conversations, interpreting intentions, and managing necessary actions quietly and efficiently. They will minimize distractions, restore clarity, and empower makers and retailers to operate with greater ease, assurance, and flow.We are commencing this journey within the food sector, where culture, community, and craftsmanship intersect most profoundly. The insights we gather here will inform how we extend our support to other sectors within the independent economy, amplifying the voices of those who enrich our world with creativity and vitality.Your Role as a Full-Stack EngineerWe invite you to join us as a Full-Stack Engineer to help establish the backbone of DELLI’s agentic platform. Your work will span the entire technology stack, from the intelligence behind our Order and Payments Hubs to the infrastructure that ensures seamless operation. This role is hands-on, where you will design, build, and learn rapidly based on feedback from real users who depend on our solutions.You will collaborate within a dynamic engineering team where each member contributes to architecture, problem-solving, and project delivery. You will not be confined to a narrow part of the system; instead, you will engage in end-to-end work across platforms. You will architect, build, deploy, and iterate in an environment that champions autonomy, trust, inclusivity, and thoughtful engineering practices.We seek an individual who is enthusiastic about creating something innovative and meaningful. Your contributions will significantly influence the future of independent commerce.

Who We AreAt Intropic, we are revolutionizing financial intelligence by merging profound market expertise with cutting-edge AI technology. Established in the heart of London’s Canary Wharf, our mission is to simplify complex data into actionable insights. Our workplace culture thrives on values such as truth-seeking, speed, and accountability, shaping our collaborative and innovative environment. We prioritize integrity and impact, encouraging curiosity and independent thinking. If you are passionate about tackling challenges, driven by innovation, and eager to enhance your intelligence alongside a team of brilliant minds, Intropic is the perfect place for you to bring your ideas to life.Who We Look ForAs a dynamic fintech start-up with a successful product lineup, we are on the brink of launching our next groundbreaking initiative. We seek individuals who excel at solving complex, open-ended problems across various domains; our engineers are expected to engage in more than just routine tasks. A typical week might involve debugging Python code, implementing infrastructure changes, engaging with early adopters, and collaborating on strategic planning with team leads. We value talent over traditional resumes; if you are interested, we would be thrilled to hear from you!

Corgi builds insurance products for tech startups, using artificial intelligence to power underwriting and streamline processes. The company operates as a fully licensed carrier, has raised $108M, and is expanding into the UK and EU. The platform relies on Django and Stripe, with a focus on fast, AI-driven solutions. Role overview This Full-Stack Engineer position is based in London. The team values people who turn ideas into working products, whether through side projects, weekend builds, or tools that real users rely on. Engineers here often work independently, taking projects from concept to deployment without waiting for a detailed roadmap. Self-starters who enjoy building and shipping quickly will feel at home. Requirements Track record of independently developing and launching projects that reached users Comfort working across the stack, especially with Django and Stripe Ability to deliver results in hours or days, not long cycles Adaptability and willingness to change direction as needed Strong opinions, paired with openness to better solutions Focus on outcomes and results over job titles How we work Decisions happen quickly, prioritizing action over perfection Products and process changes launch regularly, not just on a quarterly basis Ship-and-iterate mindset: feedback and improvement come after launch High energy is expected during product pushes and quieter times Transparency: decisions are made openly Internal competition is encouraged, with top performers raising the bar This is a hands-on role for builders who want to make an impact. Behaviors that lead to removal Office politics, avoiding responsibility, or gossip Taking direct feedback personally instead of constructively Adding unnecessary overhead instead of streamlining Missing deadlines after committing to them How to apply Send links to GitHub, personal sites, live projects, or shipped work Resumes are not accepted Email applications to: sergio@corgi.com If you cannot show shipped work, this role is not a fit Location and compensation London-based, with on-site or hybrid options Base salary: £75,000 to £140,000, plus equity Compensation is based on ability to ship, not job titles

Location: London, UK (hybrid) Role Type: Full-time Join our innovative team at Materiom as a Senior Software Engineer. In this pivotal role, you will engage in the rapid prototyping, development, and productization of data-driven and AI-centric web applications. Your contributions will play a vital role in overcoming R&D challenges for pioneers in bio-based materials. You will be tasked with designing and building robust full-stack systems, making significant architectural contributions, and translating complex user needs into actionable technical strategies. You will also champion engineering best practices within our mission-driven startup culture. Your technical prowess across the stack, particularly on the front end, combined with a product-focused approach, will ensure the delivery of high-impact results. As you design user-centric applications, you will transform prototypes into actionable solutions that propel Materiom’s mission forward. Collaborating closely with Materiom's senior leadership team, including the Co-CEOs and CTO, you will be instrumental in shaping our product and platform. #python #fastapi #react #typescript #GCP #PostgresSQL

Role overview Genomics England is looking for a Software Engineer with solid Python experience to help create software that drives genomics research and benefits patient care. The team combines engineers and scientists who work together to build scalable tools that advance the organization's mission. What you will do Develop and maintain software applications using Python for genomics-related projects. Collaborate with fellow engineers and scientists to design solutions that back both research and clinical goals. Contribute to technology projects aimed at improving patient outcomes. Location This role is based in London.

We are seeking a talented and driven Implementation Engineer to join our fast-growing team at Stacks. As an Implementation Engineer, you will play a crucial role in delivering cutting-edge solutions to our clients, ensuring seamless integration of our products into their systems.Your responsibilities will include collaborating with cross-functional teams, troubleshooting implementation issues, and providing technical support to ensure client satisfaction. If you are passionate about technology and enjoy solving complex problems, we want to hear from you!

Join Stacks as an Accounting Engineer, where your expertise in accounting principles and engineering will help us drive financial efficiency and innovation. In this dynamic role, you will collaborate with cross-functional teams to design and implement accounting systems that align with our strategic goals.

About the RoleWe are seeking a talented Full Stack Web Engineer to take ownership of ThreatAware's digital presence. As a key member of the Marketing team, you will play an instrumental role in shaping our website, landing pages, conversion funnels, and web-based tools. You have a passion for creating fast, visually stunning, and conversion-optimized web experiences, caring for every pixel and millisecond. If you thrive at the intersection of engineering and marketing and want to make a direct impact on how a leading cybersecurity brand is represented online, this opportunity is for you.Why Join ThreatAware?At ThreatAware, we provide security teams with a comprehensive source of truth for every device and tool within their organization. With over 150 integrations, deployment in under 30 minutes, and real-time visibility across entire IT estates, we are trusted by sectors like finance, legal, energy, and healthcare to understand their security posture.As we scale new heights, we are leveraging six years of precise cyber asset data combined with AI to revolutionize how security teams interrogate their data, automate workflows, and proactively manage risks before they escalate. You will craft the web experiences that narrate this journey and convert visitors into loyal customers.Your ResponsibilitiesTake charge of the technical aspects of ThreatAware's online presence.Develop and maintain a high-performance, secure, and accessible marketing website along with high-converting landing pages for demand generation campaigns.Implement and oversee analytics and tracking systems (GA4, HubSpot) to measure performance, conduct A/B testing, and optimize based on insights.Create interactive web tools, resource hubs, and engaging experiences that foster visitor interaction and conversion.Collaborate closely with the Brand & Creative Lead and the Demand Generation team to bring campaigns and product narratives to life online.What We Are Looking ForProficiency in TypeScript — you will be using it daily, so it should feel second nature.A keen eye for design and detail. You have experience building responsive, accessible, and aesthetically pleasing web experiences.Hands-on experience with analytics: GA4 implementation, HubSpot integration, conversion tracking, and A/B testing.Familiarity with CMS platforms, backend services, APIs, and serverless architecture.Bonus: Experience with Next.js and React, or a background in product-led growth web experiences.

Join Version 1 as a Full Stack Developer and play a pivotal role in shaping innovative web applications. You will work across the entire stack, from building responsive user interfaces to developing robust server-side logic. This is an opportunity to collaborate with a talented team to deliver high-quality software solutions.

Join Synthesia, the premier AI video platform revolutionizing business communication, trusted by over 90% of Fortune 100 companies. Since our inception in 2017, we've grown into a global leader, headquartered in London with teams across Europe and the US.As AI continues to redefine our professional landscape, Synthesia is at the forefront, crafting innovative products that enhance visual communication and foster enterprise skill development, empowering individuals to excel within their organizations.Following our successful Series E funding round, securing $200 million, we are now valued at an impressive $4 billion, with total funding exceeding $530 million from top-tier investors, including Accel, NVentures (the venture arm of Nvidia), Kleiner Perkins, GV, and Evantic Capital, alongside founders and operators from Stripe, Datadog, Miro, and Webflow.About the RoleIn this role, you will engage in end-to-end development, contributing to our client application built in React and our monolithic backend in Python, ensuring the seamless and safe deployment of your features to our user base.You will take full ownership of long-term projects, adeptly breaking down complex challenges into manageable steps that can be iteratively delivered and validated.You will collaborate directly with the product manager to brainstorm and focus on the commercial challenges you are addressing, giving you a significant role in shaping the product's trajectory.Utilizing our established data pipeline and frameworks, you will assess the impact of your work on our business objectives and adjust your approach as necessary.You will contribute to the long-term strategy of the team, ensuring we develop the engineering capabilities required to tackle future challenges over the next 6-12 months.

Join our dynamic team as a Full Stack Developer, where you'll leverage your exceptional coding abilities in C#, ASP.NET, MVC, Entity Framework, SQL Server, JavaScript, and Angular. Our expanding software company, headquartered in Surrey, is on the lookout for a passionate developer to help elevate our suite of innovative business portals, including a highly anticipated redesign of our globally recognized platform.As a key member of our close-knit development team, you will actively engage in adopting Agile methodologies, contributing across all phases of the product development life cycle. This is a remarkable opportunity to be part of a versatile team that prioritizes high-quality software craftsmanship, collaborative teamwork, and individual growth.