Senior Engineer - Full Stack & Infrastructure for AI Adoption

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

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.

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.

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.

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.

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!

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

Ebury empowers ambitious businesses to achieve global growth, mirroring this philosophy in our commitment to our employees. We promote an atmosphere rich in innovation and collaboration, where problem-solving thrives, and everyone feels a sense of belonging, value, and support to excel.If you're a team player eager to redefine how businesses operate on a global scale, we invite you to connect with us. Let's discuss how Ebury can catalyze your career and enable you to influence the future.Mid-Full-Stack Engineer - AI Agent PlatformLondon Victoria Office - Hybrid: 4 days in the office, 1 day working from homeAbout the RoleJoin us as we develop an AI-driven financial crime investigation platform that revolutionizes how Ebury's compliance teams function. Our AI agents will handle thousands of screening cases, alleviating the workload for analysts while upholding regulatory standards.We are in search of a Mid Full-Stack Engineer to be part of our expanding team. You will engage with the entire technology stack—from React frontends to Python backends and LLM integrations—delivering features that significantly influence compliance operations.This is a rare chance to work at the crossroads of AI/ML, fintech, and compliance—creating production-ready AI systems that drive our success.

About the PositionBluefish AI is on the lookout for a talented Staff Full-Stack Engineer who excels at the convergence of product development, infrastructure management, and AI-enhanced solutions. In this pivotal role, you will spearhead the architecture and evolution of scalable web applications, significantly contributing to the long-term technical backbone of Bluefish's AI marketing platform.As a key player, you will collaborate with cross-functional teams including AI engineers, product managers, designers, and infrastructure engineers to transform vague product concepts into solid, scalable systems. Your responsibilities will extend beyond feature development to encompass defining architectural patterns, steering technical direction, and ensuring that engineering choices align with the company's growth trajectory.We seek a candidate with a strong product-oriented and systems-focused mindset, dedicated to delivering sustainable solutions and demonstrable customer impact.In this technical leadership role, you will enhance engineering practices across teams, guiding design reviews, mentoring senior engineers, and establishing standards that empower teams to innovate rapidly while ensuring reliability and quality.This position presents an exciting opportunity to shape the architecture of core systems, influence the technical strategy across the company, and define the role of AI-assisted development in revolutionizing marketing technology.This position is associated with our London office but offers remote work options within the UK.

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

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.

(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.

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.

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 operate globally, reach out to us — we would love to explore how Ebury can expedite your career progression and enable you to shape the future.Senior Full-Stack Engineer - AI Agent PlatformLocation: London Victoria Office - Hybrid: 4 days in the office, 1 day working from homeAbout the RoleWe are developing an AI-driven financial crime investigation platform that is transforming the operational efficiency of Ebury's compliance teams. Our AI agents are designed to manage thousands of screening cases, alleviating the workload of analysts while ensuring compliance with regulatory standards.We seek a Senior Full-Stack Engineer to enhance our platform and elevate our engineering standards. You will design and implement complex features across the entire stack—from React frontends to Python backends and LLM integrations—while mentoring colleagues and influencing our technical strategy.This is an exceptional opportunity to work at the crossroads of AI/ML, fintech, and compliance, developing production-grade AI systems that tackle real financial crime investigations at scale.What You Will DoArchitect and construct end-to-end features across our React frontend and FastAPI backend...

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

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

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.

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.