Full Stack Software Engineer For Ai Training Projects jobs in London – Browse 3,706 openings on RoboApply Jobs

Full Stack Software Engineer For Ai Training Projects jobs in London

Open roles matching “Full Stack Software Engineer For Ai Training Projects” with location signals for London. 3,706 active listings on RoboApply Jobs.

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companyLifted An Upwork Company logo
Contract|On-site|London

We are seeking a talented Full Stack Software Engineer to join our dynamic team focused on artificial intelligence training projects. The ideal candidate will have a strong foundation in both front-end and back-end development, with a passion for creating innovative solutions that enhance AI capabilities.

Mar 30, 2026
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companyFaculty logo
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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companyplinth logo
Full-time|On-site|London

About the Role:We are seeking a talented full stack developer with a classical engineering background who is eager to make a significant impact. Join our mission to revolutionize service delivery and enhance funding opportunities for the charity sector.Apply here.What We Are Looking For:Experience is not the only indicator of talent. Ideally, you have a history of employment and have successfully delivered a product independently from concept to completion. This position is ideal for those who strive for excellence in their work.Our goal is to create an engineering team with a high weight-to-power ratio. You will not be bogged down by excessive meetings; there are no daily scrums or mandatory design documents. Our focus is on delivering quality software quickly to our users.When we refer to a 'Classically trained software engineer', we envision a candidate with a comprehensive understanding of software engineering principles, preferably someone with a Computer Science degree. We want a versatile individual who can navigate between frontend, backend, and DevOps, or is confident in their ability to do so. Broad skill sets are favored over niche expertise.We are flexible regarding the use of AI tools; if you find a unique solution to a client’s issue while traveling, we fully support your approach as long as the code is robust.

Feb 19, 2026
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companyApollo Research logo
Full-time|On-site|London

Application Deadline: We are actively interviewing and looking to fill this position promptly with the right candidate. EXCITING OPPORTUNITYBecome a pivotal member of our newly established AGI Safety Product Team at Apollo Research. In this Full Stack Engineer role, you will collaborate directly with our CEO, who also serves as Head of Product, alongside other talented product engineers and the Evals team to craft tools that enhance AI agent safety at scale for our users. Your contributions will help develop innovative products that monitor AI coding agents for safety and security risks. Joining our small, dynamic team means you'll have substantial influence over both team dynamics and technological direction, with opportunities to quickly take on greater responsibilities.This position is perfect for you if you are passionate about creating products that genuinely enhance AI safety, thrive in fast-paced environments, and enjoy collaborative work with researchers.PRIMARY RESPONSIBILITIESProduct Development- Work alongside the team lead to clarify tool specifications, translating them into robust technical architectures.- Engineer and sustain features across the entire stack, from responsive front-end interfaces (using React) to scalable backend services in Python.- Produce clean, well-documented, and maintainable code that adheres to our rigorous standards for security and performance, while engaging with users to capture their use cases and requirements.Back-End Development- Design and build scalable backend services capable of processing and analyzing extensive AI agent logs.- Develop RESTful APIs and data processing pipelines for AI agent logs.- Create secure API endpoints to facilitate the integration of our tools into customer workflows.- Establish monitoring and logging systems to ensure optimal reliability and performance.Front-End Development- Construct intuitive user interfaces that empower customers to comprehend and act on AI agent safety and security evaluations.- Create interactive data visualizations that effectively convey complex AI behaviors.

Dec 17, 2025
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companyHumaans logo
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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company
Full-time|On-site|London

About WexlerWexler is at the forefront of revolutionizing litigation through advanced AI technology. Our mission is to develop the most effective AI system for legal disputes globally. We collaborate with some of the largest law firms, assisting them in navigating complex cases, identifying winning strategies, and organizing the multitude of documents and facts that come with each case. Based in London, we are a dynamic and rapidly expanding legal AI company, trusted by prominent firms like Clifford Chance, HSFKramer, Goodwin, and Addleshaw Goddard to uncover critical facts that can sway the outcome of cases.Having secured $5.3M in Seed funding from esteemed investors including Pear VC, Seedcamp, and The LegalTechFund, we are poised for significant growth. Our comprehensive AI platform is designed to manage, resolve, and prevent legal disputes for Enterprise law firms and Fortune 500 companies. As we expand at an impressive rate of 10x year-over-year, we continue to partner with leading firms each month. Our system processes millions of documents to extract objective, cross-referenced facts, enabling litigators to win more cases while significantly reducing their workload. This commitment ensures every client receives the representation they deserve.As AI transforms the legal landscape, Wexler stands out as the premier generative AI platform tailored specifically for the intricacies of litigation. Our rapid growth is a testament to the effectiveness of our approach.About the RoleWe are looking for a driven full-stack engineer to join our team and work alongside the founders to design, develop, and scale Wexler's document analysis systems, which are powered by our cutting-edge fact extraction engine. In this role, you will collaborate closely with the founding technical team, contributing significantly to our product's technical architecture and the realization of our ambitious product roadmap.As a Software Engineer, you will be instrumental in shaping the culture of our technical organization, learning from experienced Software and Machine Learning Engineers. You will be given the opportunity to quickly take on more responsibilities, with a clear pathway to leadership roles in the future.Please note that we currently have two open positions for this role.Key Responsibilities:Design, develop, and scale full-stack applications that enhance Wexler's document analysis capabilities.Create customer-facing features, internal tools, and DevOps infrastructure to support our expanding platform.Collaborate with AI engineers to incorporate LLM capabilities into production-ready software systems.Build robust and scalable backend systems using modern technologies.

Oct 15, 2025
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companyINFINIT logo
Full-time|On-site|London

Join Our Innovative Team!INFINIT, a dynamic fintech scale-up founded in 2023, is making waves across Europe and the Americas. Our mission is to transform the landscape for small and medium enterprises (SMEs) by harnessing the power of AI.We are committed to creating an all-in-one operating system that centers around banking, enabling small business owners and their teams to effortlessly manage and improve all facets of their operations with the assistance of AI agents.By focusing on specific industries, we deliver customized, high-impact solutions and develop innovative AI products that unlock significant growth opportunities for our clients. With global operations and ambitious expansion plans, we aim to redefine the fintech landscape for SMEs worldwide.Embark on the INFINIT journey with us as we revolutionize the SME economy and make a meaningful impact through cutting-edge innovation The RoleWe are looking for a talented Full Stack Software Engineer to propel our product development cycle. This role is grounded in the belief that exceptional engineers do more than just write code; they build comprehensive solutions. Your main responsibility will be to bridge the gap between business requirements and technical execution, quickly translating high-level objectives into polished, deployable features.You will be expected to question requirements, adopt a product-first mindset within the engineering team, and ensure that every line of code contributes tangible value. This position requires strong software engineering skills and keen product judgment to prioritize and deliver high-impact features in a fast-paced environment.

Feb 26, 2026
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companyEdra logo
Full-time|On-site|London

Join the Edra TeamAt Edra, we're tackling one of the most challenging issues in enterprise AI: the gap between generic AI models and specific company processes. Our mission is to develop AI agents that not only understand how these processes operate but also enhance their efficiency.As a Series A startup, with backing from Sequoia and other prestigious venture capitalists, we are expanding our team in both New York and London. Our team consists of highly skilled engineers, AI researchers, and strategists who share a commitment to excellence, believing that remarkable individuals are the cornerstone of our success.Your ImpactWe are on the lookout for passionate Full Stack Engineers who have a strong dedication to software craftsmanship. You will focus on thoughtful API design, robust data modeling, and user interfaces that provide a seamless experience for both users and fellow engineers. Your role will involve creating a comprehensive platform, workflows, user experiences, integrations, and observability tools that ensure our AI solutions are effective in real-world applications. As an early member of the engineering team, you'll not only influence our product development but also help shape our engineering culture, tooling decisions, and technical foundations.We value a deliberate and thorough approach to our work. We believe in integrating the building and shipping processes; you will transition from concept to production, taking full responsibility for your outcomes. Our priority is to deliver thoughtful solutions rather than rushing fragile implementations, viewing velocity and quality as mutually beneficial rather than opposing forces.Key ResponsibilitiesDesign and implement platform systems using Python (FastAPI), including API contracts, database schemas, and infrastructure, alongside creating high-quality user experiences with TypeScript and React, focusing on clean component design, strong typing, and maintainable front-end architectures.Develop shared TypeScript and Python libraries, component systems, and internal tools that enhance the productivity of the engineering team. You will define and uphold best practices, shared types, and contracts across front-end and API boundaries.Fully own your projects: gather context, manage dependencies, and drive tasks to completion independently, without waiting for a product manager to assign tickets. Your day may include designing a schema in the morning, creating a React component in the afternoon, and troubleshooting a deployment issue by the end of the day.Contribute to the product's vision and design. Collaborate closely with design teams, critically assess interface choices, and participate in weekly product meetings to gain insights into how customers and deployed engineers utilize what you create.Maintain and build connectors, integrations, and tools that ensure our platform continuously evolves and meets user needs.

Mar 16, 2026
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companyjobsforhumanity logo
Full Stack AI Engineer

jobsforhumanity

Full-time|On-site|London

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

Apr 28, 2026
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companyfaculty logo
Full-time|On-site|London

Join our dynamic team at Faculty as a Full Stack Software Engineer. In this role, you will have the opportunity to work on both the front-end and back-end of our innovative software solutions. You will collaborate with cross-functional teams to design, develop, and maintain applications that enhance our clients' experiences. Your expertise in various programming languages and frameworks will be essential in driving our projects forward.

Feb 24, 2026
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companyYext Inc. logo
Full-time|On-site|London, UK

Yext (NYSE: YEXT) is at the forefront of brand visibility, crafting an ecosystem where discovery and engagement transcend boundaries—spanning AI search, traditional search, social media, websites, and direct communications. With a robust foundation of over 2 billion trusted data points and a comprehensive suite of solutions, Yext empowers brands with clarity, control, and confidence to thrive across digital platforms. Our innovative culture, recognized globally as a 'Best Place to Work' by esteemed organizations such as Built In, Fortune, and Great Place to Work®, invites you to be a part of a team that transforms digital presence into a competitive advantage.The Yext Services team collaborates closely with our largest clients to provide tailored, integrated solutions. Comprising Project Management, Creative, and Development professionals, we excel in addressing diverse challenges and adapting to the evolving needs of our clients. We are currently seeking a Full Stack Software Engineer to develop custom web and backend solutions for our enterprise clientele. Our Agile development environment features one-week sprints, peer code reviews, and individual project ownership from inception to delivery, allowing you to engage with code from day one alongside engineers from prestigious universities and leading tech companies.

Mar 20, 2026
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companyameba logo
Full-time|£80K/yr - £130K/yr|On-site|London

Full-Stack Software Engineer at AmebaJoin Ameba as a Full-Stack Software Engineer and be part of a transformative journey in the supply chain industry. At Ameba, you will have the unique chance to develop innovative software solutions that shape the way products move from raw materials to finished goods. If you're intrigued by the behind-the-scenes mechanics of the world, we want to hear from you!We are a dynamic startup led by seasoned entrepreneurs who have collectively raised over $160 million and come from top-tier companies like Meta, Palantir, and Microsoft. With ambitious goals and strong backing from prestigious investors in Europe, we have secured more than $9 million since our inception just over a year ago.Your Role as a Full-Stack EngineerIn this pivotal role, you will partner closely with our CTO and engineering team to conceptualize, develop, and launch products. You will engage with various technologies across the stack, including front-end development with React and TypeScript, back-end services powered by Kotlin and Python, and machine learning initiatives. Our fast-paced startup environment allows features to go from concept to user-ready in just a week, so you should be comfortable with rapid iterations and eager to create products that resonate with users. Don't worry if you lack experience in certain areas—your enthusiasm and willingness to learn are what matter most!Life at AmebaWe are committed to providing competitive salaries and substantial equity packages to all team members. Our focus is on building a streamlined team of highly skilled individuals, ensuring that we reward them generously.We value collaboration and prefer in-office work five days a week for effective communication, while still offering flexibility for remote work when needed. Our priority is establishing a robust office-first culture at this stage.Enjoy 28 vacation days annually, along with a complete two-week shutdown during the holiday season for everyone to recharge.We offer four months of parental leave at full salary for both maternity and paternity.Our healthcare benefits include comprehensive medical and dental coverage.The salary for this role ranges from £80,000 to £130,000 plus generous equity options.

Apr 9, 2025
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companyAnduril 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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companySwap logo
Full-time|Remote|London

Full Stack Software EngineerLocation: London (Remote)About SwapAt Swap, we are revolutionizing the future of commerce with our AI-native platform that seamlessly integrates backend operations with a cutting-edge storefront experience. Our innovative solutions empower brands to sell products globally, streamline operations, and make informed decisions with real-time data analytics.Our comprehensive product offerings include cross-border solutions, tax management, returns logistics, and demand planning, enabling merchants to operate with full transparency and confidence.Join us as we cultivate a culture driven by clarity, creativity, and shared ownership, redefining the landscape of global commerce.Role OverviewWe are seeking a passionate Full Stack Software Engineer to become a vital part of our expanding engineering team during an exciting period of rapid growth. You will play a key role in shaping the future of our products, building them from the ground up. The ideal candidate will have a strong enthusiasm for crafting elegant software solutions and will stay updated with the latest development tools and libraries, ensuring the best choices are made for each task. Our engineers are expected to contribute across the entire product stack and maintain the integrity of our codebase while collaborating closely with product managers, designers, and other teams.Key ResponsibilitiesDeveloping scalable, robust, and maintainable code that meets performance standards.Translating software requirements into high-performance applications.Participating in architectural and design decisions to promote efficient structures.Creating design documentation and project estimates.Developing unit tests to ensure code quality.Utilizing AWS for application deployment, monitoring, and scaling.Collaborating with cross-functional teams to gather technical requirements and translate them into actionable tasks.QualificationsProven experience as a Full Stack Engineer.Strong proficiency in modern web frameworks and languages.Experience with cloud services, particularly AWS.Ability to work collaboratively in a team environment.Excellent problem-solving skills and attention to detail.

Dec 22, 2025
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companyDELLI logo
Full-time|On-site|London, England, United Kingdom

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.

Nov 15, 2025
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companyHerondata 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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companyFlatiron Health logo
Full-time|On-site|London office

Flatiron Health is hiring a Senior Full Stack Software Engineer for its London office. This role centers on building data-driven tools and products that support better cancer care. The team’s mission is to improve and extend lives by drawing insights from the experiences of people affected by cancer. About Flatiron Health Flatiron Health works with cancer centers across the US, Europe, and Asia, transforming real-world patient data into evidence that can inform care and research. Teams include oncologists, data scientists, software engineers, epidemiologists, and product specialists, all collaborating to advance oncology. What You’ll Do Design and build technology solutions with engineering teams based in the US, UK, Germany, and Japan. Work closely with oncologists, clinicians, product leaders, and quantitative scientists to solve technical and business challenges. Help shape team roadmaps and contribute to ongoing technical improvements. Support the growth and culture of Flatiron’s European engineering teams. Develop creative approaches to complex problems in healthcare technology. Iterate quickly on products while following engineering best practices for quality and security. Work with complex data pipelines and a range of data processing tools. Bring or build deep knowledge of the UK healthcare landscape, especially around data sources, security, privacy, and new trends. Who We’re Looking For Full Stack Software Engineer with 4-8 years of relevant experience. Comfortable working in a fast-moving setting and able to think creatively and adapt quickly. Interested in a technology-driven culture that values innovation and measurable business impact. Experienced in agile development and object-oriented programming languages such as Python, Java, C#, or SQL, and open to learning new technologies. Knowledge of healthcare systems, especially in the UK, is a plus. This role offers the chance to work alongside experts from multiple disciplines and make a meaningful contribution to cancer care through technology.

Apr 15, 2026
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company
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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companyCivic Marketplace logo
Full-time|On-site|London, UK

Become Our Foundational Engineering Leader at Civic Marketplace!Are you driven by the potential of technology to foster significant change within communities? At Civic Marketplace, we are innovating the process by which local governments acquire and provide essential services, crafting the most user-friendly and effective procurement platform for the future.Why Choose Civic Marketplace?We are a mission-oriented startup dedicated to reshaping the operational landscape for local governments—eliminating obstacles, streamlining workflows, and ultimately enhancing outcomes for citizens. If you thrive in a startup environment and wish to join a purpose-driven team effecting genuine change, this role is tailored for you.Who We’re Seeking:We are in search of our inaugural engineering hire—a proactive technical leader prepared to take full ownership of our technology landscape. You will spearhead our technical vision, enhance our codebase, and assemble a high-performing team to achieve our ambitious objectives. You will be a pivotal figure in our expanding organization, with the autonomy to define our technological strategy and architecture.Key Responsibilities:Lead the execution of our full-stack development initiatives, ensuring seamless ownership of code from inception to deployment. You will be our full-time lead engineer, collaborating with teams to facilitate execution through the establishment of effective processes, setting clear expectations, managing risks, resource allocation, and removing impediments.Craft a quality assurance playbook for your teams, establishing standards for code reviews, pull requests, testing, and monitoring. You will actively contribute to coding while also delegating tasks and hiring talent as necessary, including working with freelancers.Demonstrate proficiency in REACT, marketplace dynamics, payment infrastructure, and hybrid development approaches utilizing both custom and no-code/low-code solutions.Ensure your team manages the operation of data, systems, and applications in production, driving the resolution of critical issues through root cause analysis.Foster hiring, motivation, and professional growth among team members by developing a deep understanding of their motivations, strengths, and growth opportunities. Align personal growth opportunities with organizational impact.

Aug 27, 2025
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companyNeo4j, Inc. logo
Full-time|On-site|London

About Neo4j:Neo4j is the leading graph intelligence platform that turns data into actionable insights, enabling the development of the next generation of intelligent applications and AI systems. Our platform boasts enterprise-ready knowledge graphs that are accurate, explainable, and governed for AI; comprehensive and trusted graph capabilities that are easy to deploy across various environments and data sources; and an unparalleled ecosystem that is trusted by 84 of the Fortune 100 companies and backed by the largest graph community in the world. Experience intelligence that truly works and produces significant results.Designed for seamless integration across all clouds, our technology facilitates dynamic, personalized, and autonomous AI systems, delivering rapid insights, contextual knowledge, and solutions that enhance the experience for both customers and employees.Our Vision:At Neo4j, we are committed to helping the world make sense of data. As the realms of business, society, and knowledge become more interconnected, our technology fosters innovation by enabling organizations to discover and comprehend data relationships. We are pioneers in the graph database category, revolutionizing how businesses utilize their data to drive innovation and maintain a competitive edge.The Team:Our team is responsible for the core user experience of managing Neo4j database instances on the Aura cloud platform and serves as a foundation for other teams to build tooling upon. We manage everything from internal APIs and customer support tools to maintaining build and deployment pipelines. Join us in this strategically significant role, where you will develop features utilized by some of the largest enterprises worldwide.We are in search of full-stack engineers who are proficient in back-end technologies, yet comfortable working on the front-end as well. Key server-side experience includes designing and developing HTTP APIs, implementing data persistence logic, managing async and event-based processing, and integrating with third-party services.The Role:As a Software Engineer on the Aura Instances team, you will play a pivotal role in building crucial components...

Mar 16, 2026

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