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Senior Fullstack Engineer – AI Powered FinTech Platform

A global AI-native technology solutions provider seeks a Senior or Staff Fullstack Software Engineer to enhance their financial platform in London. This role focuses on designing high-performance services, developing APIs, and ensuring integration with various systems. Candidates should have over 7 years of soft ...

Senior Fullstack Engineer for AI Platform – London Hybrid

Capsa AI Ltd is seeking Staff / Senior Fullstack Engineers in London for a hybrid role. You will be responsible for developing features end-to-end and enhancing the capabilities of our AI platform. Ideal candidates will have over 4 years of experience in software engineering, particularly in a venture- ...

Senior Fullstack Engineer (Data Platform)

Mission Statement The Platform team creates the technology that enables Spotify to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe. Spanning many disciplines, we work to make the business work; creating the infrastructure, tooling, frameworks, ...

Senior Fullstack Engineer Commerce Platform

The Subscriptions Mission builds and evolves the experiences and systems that allow millions of listeners to discover, subscribe to, and enjoy Spotify Premium. Our teams focus on awareness, acquisition, activation, retention, and commerce — ensuring seamless experiences that help fans connect more deeply w ...

Senior Fullstack Engineer — Platform Architect

A growing engineering company in Greater London is seeking a Senior Fullstack Software Engineer responsible for designing, building, and maintaining critical production systems. The role emphasizes ownership, systems thinking, and high-quality engineering on mature platforms. The ideal candidate will have 8-15 y ...

Senior Fullstack Engineer Data Platform

Mission StatementThe Platform team creates the technology that enables Spotify to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe. Spanning many disciplines, we work to make the business work; creating the infrastructure, tooling, framewor ...

Senior Fullstack Engineer Commerce Platform

The Subscriptions Mission builds and evolves the experiences and systems that allow millions of listeners to discover, subscribe to, and enjoy Spotify Premium. Our teams focus on awareness, acquisition, activation, retention, and commerce — ensuring seamless experiences that help fans connect more deeply with ...

Senior Fullstack Engineer Data Platform

Mission StatementThe Platform team creates the technology that enables Spotify to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe. Spanning many disciplines, we work to make the business work; creating the infrastructure, tooling, framewor ...

Senior Fullstack Engineer Commerce Platform

The Subscriptions Mission builds and evolves the experiences and systems that allow millions of listeners to discover, subscribe to, and enjoy Spotify Premium. Our teams focus on awareness, acquisition, activation, retention, and commerce — ensuring seamless experiences that help fans connect more deeply with ...

Staff Fullstack Engineer — AI Driven Financial Platform

Wizeline, based in Fitzrovia, London, is seeking a Senior or Staff Fullstack Software Engineer to develop scalable services for a financial platform. Responsibilities include designing services, building robust APIs, and integrating with systems like Salesforce and payment processors. The ideal candidate has ove ...

Senior Fullstack Engineer Admin/AI

Senior Fullstack Engineer (Admin & AI Enablement) Team: Admin & AI Enablement Location: Remote / London / Hybrid (TBD) This role will be a key part of building Midnite’s new internal back office platform and shaping how internal tools evolve across the business. Yo ...

Senior Fullstack Engineer – AI Native

HiveMQ’s Vision for this role We aren't just using AI to help us code; we are an AI-native engineering organization. Our next major milestone is architecting a swarm of autonomous coding bees – specialized agents designed to handle end-to-end feature delivery, from infra provisioning to self‑corr ...

Senior Fullstack Engineer Platform & Systems Architect

Outsmart Insight in Greater London is looking for a Senior Fullstack Software Engineer to design, build, and maintain production systems driving the company’s platform. This role provides operational responsibility and the chance to make real architectural decisions. The ideal candidate will have 8-15 ...

Senior Fullstack Engineer Scale Fintech Platform

A financial technology startup is seeking a skilled engineer to join their high-performing team in London or Paris. This role involves contributing to product development from ideation to deployment, building intuitive web interfaces, and mentoring junior engineers. Ideal candidates will possess a product mindse ...

Senior Fullstack Engineer Enrichment Shop Platform

Wayve in London is seeking a Fullstack Engineer to build and own a new internal web application for computer vision models. This role involves close collaboration with internal users to shape workflows and deliver an MVP rapidly. The successful candidate will need strong JavaScript and TypeScript skill ...

Staff Fullstack Engineer: Scale an AI Learning Platform

Job Title Staff Fullstack Product Engineer Company Description Gizmo.ai - AI-powered learning platform backed by $22M Series A Job Description Join a high-velocity team of four engineers building the Duolingo for anything. As a Staff-level individual contribu ...

Senior Fullstack Engineer — Global Commerce Platform (Remote)

A leading audio streaming service is looking for a Senior Fullstack Engineer to enhance its payment infrastructure. The role involves architecting and implementing backend services using Java and Python to ensure payment processing across their platform. The ideal candidate is experienced in modern JavaScript, c ...

Senior Fullstack Engineer Server Driven UI Platform

A leading global technology company is seeking a Senior Software Engineer II (Fullstack) to enhance their in-house server driven UI framework. You will contribute to backend library and web client development while collaborating with product teams to create high-quality features. Ideal candidates have significan ...

Senior Fullstack Engineer, Data Platform — SDKs & APIs

Spotify is looking for a Fullstack Developer to join their Data Platform in London. You'll build tools to help developers understand user behavior and collaborate with cross-functional teams. The ideal candidate has strong JavaScript and TypeScript skills, experience with React, and a focus on developer experien ...

Senior Fullstack Engineer Vendor Risk Platform (Remote)

A leading technology company in Greater London is seeking a Senior Software Engineer to lead complex projects and contribute to the engineering culture. The ideal candidate will have over 7 years of full-stack experience with a focus on backend systems, strong communication skills in distributed teams, and a tra ...

Senior Fullstack Engineer Elixir for HealthTech Platform

Doccla, based in Greater London, is looking for a Full-Stack Engineer with strong Elixir and React skills. In this role, you'll deliver high-quality software, lead technical projects, and collaborate closely with cross-functional teams. The ideal candidate should have extensive experience in a regulated environm ...

Senior Fullstack Engineer – Hybrid Core Banking Platform

A leading financial technology firm in Greater London seeks an experienced engineer to oversee financial systems' development and management. Key responsibilities include ensuring compliance and building data-driven systems. The ideal candidate should have a strong technical background, experience with Python, P ...

Senior AI Engineer Platform

PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, mu ...

Senior AI Platform Engineer

We’re on a mission to back the UK’s small businesses like no one else Small businesses are the backbone of the economy, and we’re here to help them win. We’ve built a platform that uses clever data to get them the funding they need in minutes, not weeks. At Funding Circle, we have t ...

Senior AI Platform Engineer

A leading AI-driven company in the United Kingdom is seeking a Senior Software AI Engineer to design and maintain AI capabilities, drive innovation, and enhance product efficiency. The ideal candidate will have over 5 years of backend development experience and a strong understanding of AI tools, along with a pr ...

Senior AI Platform Engineer

About hyperexponential (hx) At hyperexponential, we’re building the AI‑powered platform that enables the world’s most critical decisions in a $7 trillion industry, which risks to take, and how to price them. These are the decisions that shape real‑world outcomes: whether rockets successfully launc ...

Senior AI Platform Engineer

Mission We're on a mission to back the UK's small businesses like no one else. Small businesses are the backbone of the economy, and we're here to help them win. We've built a platform that uses clever data to get them the funding they need in minutes, not weeks. At Funding Circle ...

Senior AI Platform Engineer

We’re reinventing payments.In less than four years, Dojo disrupted the market to become the largest and most loved acquirer in the UK. Our payments infrastructure, purpose-built for in-person commerce, is game changing.Now, over 150,000 customers across four countries choose to transact bil ...

Senior AI Platform Engineer

We’re reinventing payments.In less than four years, Dojo disrupted the market to become the largest and most loved acquirer in the UK. Our payments infrastructure, purpose-built for in-person commerce, is game changing.Now, over 150,000 customers across four countries choose to transact bil ...

Senior Platform Engineer, Data & AI Platform

A leading technology firm in London is searching for a Senior Platform Engineer to enhance its Data & AI engineering sub-team. You will be responsible for building scalable technology platforms while automating deployment processes. Applicants should have extensive experience in platform engineering, cloud solut ...

Senior Fullstack Engineer: AI Driven Testing & Automation

A pioneering AI startup in Greater London seeks a dynamic team member to help build autonomous testing solutions that enhance software quality. In this role, you'll deploy software rapidly, collaborate closely with founders, and leverage AI technologies to revolutionize user experiences. Ideal candidates should ...

Senior Fullstack Engineer: Admin & AI Enablement (Remote)

A dynamic technology company is seeking a Senior Fullstack Engineer to develop high-quality administrative tools for their internal platform. This role offers an opportunity to shape internal workflows with practical AI enhancements. The ideal candidate has 5+ years of experience across front-end and back-end de ...

Senior Fullstack Engineer: AI Driven, Scalable Apps

A global technology consultancy is looking for developers in Greater London to leverage AI tools in software development. You will enhance development cycles and drive innovation using your expertise in software development. Ideal candidates would have at least 5 years' experience with skills in ReactJS and Node ...

Senior Fullstack Engineer

Midnite is a next-generation sports betting and gaming platform built for a new wave of players. We combine sharp product thinking, bold brand, and fast execution to create experiences that feel modern, intuitive, and built for how people actually play today. Over 400,000 players have alrea ...

Senior Fullstack Engineer

This range is provided by Peaple Talent. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Peaple Talent is thrilled to partner with a top-tier software company in search of a Senior Full Stack Engineer. This is an exciting opp ...

Senior Fullstack Engineer

Join to apply for the Senior Fullstack Engineer role at Siena AI. Meet Siena Siena is the first intelligence layer for customer experience. We're creating an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping ...

Senior Fullstack Engineer

The Opportunity We are looking for a seasoned Senior Fullstack Engineer to join our engineering team. This role requires a deep understanding of both front‑end and back‑end development, with a strong focus on Ruby and Node.js technologies. This role is quite unique in that you would be wo ...

Senior Fullstack Engineer

QA slows the world down. Flaky tests kill trust, stall releases, and bleed engineering velocity. Duku AI is ending that era. We're building autonomous agents that think like engineers: they run every critical user journey, catch failures before users do, and self-heal as the codebase evolve ...

Senior Fullstack Engineer

Senior Fullstack Engineer Role Overview We are seeking a Senior Fullstack Engineer with 8+ years of experience who operates as a hands‑on contributor and takes full ownership of building, scaling, and running production systems. This role is designed for engineers who have built and ...

Senior Fullstack Engineer

Senior Fullstack Engineer Application Deadline: 31 May 2026 Department: Engineering Employment Type: Permanent - Full Time Location: London Compensation: £70,000 - £85,000 / year Description About us ...

Senior Fullstack Engineer

Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring Staff / Senior Fullstack Engineers who are comfortable contributing across all layers of the application and developing features end to end. Details Location : London ...

Senior Fullstack Engineer

Midnite is a next-generation sports betting and gaming platform built for a new wave of players. We combine sharp product thinking, bold brand, and fast execution to create experiences that feel modern, intuitive, and built for how people actually play today. Over 400,000 players have alrea ...

Senior Fullstack Engineer

Senior Fullstack Engineer – Would you like the opportunity to work for an organisation who are building technology to empower the independent economy? They’re currently building an AI-powered platform that acts as connective tissue across conversations, orders, payments, and discovery. As a Seni ...

Senior Fullstack Engineer

Join an exciting journey with a rapidly expanding AI-driven cybersecurity innovator. I am looking for a Senior Fullstack Engineer to join my client’s dynamic team. With a salary of up to £100,000 plus enticing stock options and hybrid working from London. My client’s cutting-edge SAAS solution is tru ...

Senior Fullstack Engineer

Join an exciting journey with a rapidly expanding AI-driven cybersecurity innovator. I am looking for a Senior Fullstack Engineer to join my client’s dynamic team. With a salary of up to £100,000 plus enticing stock options and hybrid working from London. My client’s cutting-edge SAAS solution is tru ...

Senior AI Platform SRE Engineer

Amach is seeking a Senior SRE / Platform Engineer to design and scale cloud platforms supporting AI-driven products. This hands-on role involves defining architecture, driving service consistency, and improving operational capabilities. The ideal candidate will work closely with engineering leadership ...

Senior Platform and AI Engineer

About Us ClearRoute is an engineering consultancy bridging Quality Engineering, Cloud Platforms and Developer Experience. We help enterprises reliably bring high-impact digital products to market faster, cheaper, and safer, working with technology leaders facing complex business challenges. We ta ...

Senior AI Engineer Platform & Orchestration

Jack & Jill, a $28M fintech startup, is seeking an AI Engineer to lead AI transformation in alternative asset management. As the first dedicated AI hire, you will design and implement sophisticated AI workflows and document intelligence features. Join a founding team with backgrounds from KKR and Goldm ...

Senior AI/ML Platform Engineer

Tripledot Studios Limited in London is looking for a skilled AI/ML Infrastructure Engineer to build and maintain systems impacting millions of players. This role includes collaborating with various teams across the organization to improve AI solutions and productivity. The ideal candidate has at least ...

Senior Cloud & AI Platform Engineer

A leading global financial institution is seeking an experienced cloud engineer to design and implement AI-ready solutions primarily on Azure, along with Oracle Cloud and future AWS initiatives. The successful candidate will develop automation frameworks and ensure compliance with regulatory requirements while w ...

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    Senior Fullstack Ai Platform Engineer Pythonreact Jobs in London Job Search Guide, Trends and Insights