build and scale their AI-enabled workspace for professional services, investment banking, and asset managers. What you’ll be doing Building and maintaining frontend web applications using React and Next.js Developing, testing, and deploying backend services and APIs (Python preferred, e.g. Django, FastAPI) Working closely with founders, design, growth, and other engineers to ship high-impact features Ensuring scalability, performance … improve engineering practices across the team What they’re looking for At least 5 years’ professional software engineering experience Strong experience delivering production-grade web applications with React and Next.js Solid backend skills, preferably in Python , with good understanding of both relational and NoSQL databases Familiarity with Git and collaborative workflows, background workers/task queues (e.g. Celery, RQ), and More ❯
london, south east england, united kingdom Hybrid / WFH Options
Travelex
of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner applications. Being part of the Online team, you will be working … when needed Knowledge of best practices in security, performance and accessibility Skills, knowledge, and experience: Must have: 8+ years of experience in frontend development Demonstrated strong fluency with TypeScript, Next.js and React Experience with design systems, component libraries and Storybook Familiarity with state management libraries Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Strong understanding of More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Travelex
of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner applications. Being part of the Online team, you will be working … when needed Knowledge of best practices in security, performance and accessibility Skills, knowledge, and experience: Must have: 8+ years of experience in frontend development Demonstrated strong fluency with TypeScript, Next.js and React Experience with design systems, component libraries and Storybook Familiarity with state management libraries Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Strong understanding of More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Travelex
of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner applications. Being part of the Online team, you will be working … when needed Knowledge of best practices in security, performance and accessibility Skills, knowledge, and experience: Must have: 8+ years of experience in frontend development Demonstrated strong fluency with TypeScript, Next.js and React Experience with design systems, component libraries and Storybook Familiarity with state management libraries Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Strong understanding of More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Avanti
Full Stack Developer (React/Next.js/AWS) Location: Remote (UK-based preferred) Salary: £45,000 – £50,000 per annum (DOE) Contract: Full-time, Permanent About the Company We’re working with a fast-growing sports technology company that’s transforming the way professional teams and broadcasters use live performance data. Their advanced analytics platform blends machine learning, simulation, and … software development to deliver high-quality, scalable products used by leading sports organisations. The Role We’re looking for a proactive Full Stack Developer with strong skills in React, Next.js, and AWS to maintain and enhance a suite of live sports data and analytics applications. This is a hands-on position offering end-to-end ownership of features across the … ll work with real-time APIs, WebSocket feeds, and cloud infrastructure to deliver high-performance applications used by major sports clients. Key Responsibilities Develop and extend multiple React/Next.js web applications Implement new UI components with Tailwind CSS and modern JavaScript Integrate REST APIs and real-time data feeds Debug, refactor, and optimise across frontend and backend systems Manage More ❯
delivered on time Requirements Over 3 years of management experience Background in leading small teams of engineers Strong knowledge of hands on coding Experience with Ruby or React/Next.js Previous background in a start-up/scale-up environment Strong communication with ability to clearly translate development ideas Experience in leading, coaching and mentoring As an Technical Lead, this More ❯
delivered on time Requirements Over 3 years of management experience Background in leading small teams of engineers Strong knowledge of hands on coding Experience with Ruby or React/Next.js Previous background in a start-up/scale-up environment Strong communication with ability to clearly translate development ideas Experience in leading, coaching and mentoring As an Engineering Manager, this More ❯
the CEO on roadmap, demos, and sales. What you need to bring: Backend/API experience at scale. Database & infrastructure background (Postgres, Elasticsearch, scraping). Front end (React/Next.js) ideal. Startup grit, passion & exciting to build something special! What's in it for you: 20%+ vested equity as milestones are hit. A view to be a real co More ❯
the CEO on roadmap, demos, and sales. What you need to bring: Backend/API experience at scale. Database & infrastructure background (Postgres, Elasticsearch, scraping). Front end (React/Next.js) ideal. Startup grit, passion & exciting to build something special! What’s in it for you: 20%+ vested equity as milestones are hit. A view to be a real co More ❯
the CEO on roadmap, demos, and sales. What you need to bring: Backend/API experience at scale. Database & infrastructure background (Postgres, Elasticsearch, scraping). Front end (React/Next.js) ideal. Startup grit, passion & exciting to build something special! What’s in it for you: 20%+ vested equity as milestones are hit. A view to be a real co More ❯
london (city of london), south east england, united kingdom
Mirai Talent
the CEO on roadmap, demos, and sales. What you need to bring: Backend/API experience at scale. Database & infrastructure background (Postgres, Elasticsearch, scraping). Front end (React/Next.js) ideal. Startup grit, passion & exciting to build something special! What’s in it for you: 20%+ vested equity as milestones are hit. A view to be a real co More ❯
london, south east england, united kingdom Hybrid / WFH Options
Venn Apps
building and maintaining the web applications and APIs that power our ecosystem — everything from client dashboards and integration tooling to our own internal products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services … role — 4 days in the office (Mayfair, London) and 1 day working from home. What You’ll Do Build and maintain performant, reliable web applications using React, TypeScript, and Next.js Contribute to our serverless GCP architecture — including Cloud Functions, Firestore, and Cloud Run Collaborate with designers and product managers to deliver beautiful, intuitive user interfaces Write clean, testable, and maintainable … product features from concept to production Who We’re Looking For 2–4 years’ experience as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Venn Apps
building and maintaining the web applications and APIs that power our ecosystem — everything from client dashboards and integration tooling to our own internal products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services … role — 4 days in the office (Mayfair, London) and 1 day working from home. What You’ll Do Build and maintain performant, reliable web applications using React, TypeScript, and Next.js Contribute to our serverless GCP architecture — including Cloud Functions, Firestore, and Cloud Run Collaborate with designers and product managers to deliver beautiful, intuitive user interfaces Write clean, testable, and maintainable … product features from concept to production Who We’re Looking For 2–4 years’ experience as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Venn Apps
building and maintaining the web applications and APIs that power our ecosystem — everything from client dashboards and integration tooling to our own internal products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services … role — 4 days in the office (Mayfair, London) and 1 day working from home. What You’ll Do Build and maintain performant, reliable web applications using React, TypeScript, and Next.js Contribute to our serverless GCP architecture — including Cloud Functions, Firestore, and Cloud Run Collaborate with designers and product managers to deliver beautiful, intuitive user interfaces Write clean, testable, and maintainable … product features from concept to production Who We’re Looking For 2–4 years’ experience as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git More ❯
manage prompts, tools, safeguards, and evaluation. Data pipelines: Ingest, clean, and transform structured and unstructured data; design efficient schemas (Postgres/NoSQL) for search and analytics. Frontend (React/Next.js): Deliver user-friendly, performant UIs that make AI-powered features (search, filters, explanations, citations) clear and accessible. Architecture: Shape a modular, scalable platform on AWS (ECS), separating ingestion, retrieval, reasoning … k-NN), embeddings, and hybrid search methods. Practical knowledge of chunking strategies, indexing, precision/recall trade-offs, reranking, and evaluation techniques. Proficient in Python (FastAPI) and React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data engineering , schema design, ETL More ❯
Senior Software Engineer - TS, React, Next.js, Node £70,000-85,000 3-4 days p/week in London Would you like the opportunity to work for a fast-growing start-up, currently looking for a Senior Fullstack TypeScript Engineer? You will be joining a dynamic product team, where you will be building great software and diving into the world … will work within a unified codebase that drives their B2B software and custom AI. As a Senior Software Engineer, you will be working across their stack using TypeScript, React, Next.js, Node.js, and LLMs. Core requirements: Commercial experience with their stack TypeScript, React, Next.js and Node.js Strong expertise in designing and maintaining scalable, high-performance web applications Hands-on experience integrating More ❯
Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … for state management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing … end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 2-7 years of experience building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate clearly, move More ❯
Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … for state management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing … end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 2-7 years of experience building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate clearly, move More ❯
london (city of london), south east england, united kingdom
AdManage.ai
Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every business access to enterprise … for state management, testing, and performance. You’re not here to maintain, you’re here to build a complex UI that’s robust and well-tested. 🔧 Tech Stack Frontend: Next.js 14, React 18, TailwindCSS, Radix UI, Framer Motion State Management: Zustand Testing: Vitest Backend (light exposure): Node.js, Prisma, MySQL Infra: R2 Cloudfalre, AWS S3, Vercel Auth: NextAuth.js APIs: Facebook Marketing … end-to-end: idea → build → optimize for robust testing, speed and UX You Might Be a Fit If You... Have 2-7 years of experience building production React/Next.js apps Are skilled at state management in large, complex apps Believe testing is part of building, not an afterthought Care about performance, UX, and clean design systems Communicate clearly, move More ❯
Senior Software Engineer - Web Fully Remote (UK) Founding Engineer TypeScript Next.js React Tailwind Shadcn GCP Prisma An innovative, mission-driven LegalTech SaaS start-up is looking for a Senior Product Engineer (Web & Frontend) with deep experience in Typescript, React and Product development. Role Information: Salary : Up to £100,000 (DOE) + Equity Location : Fully remote (UK only) Stack : TypeScript, Next.js … for someone who thrives in startup environments, enjoys ownership, and wants to build in the agentic age. Senior Product Engineer - Highlights: Build and maintain full-stack features using TypeScript, Next.js, and React Design APIs and backend services with Prisma, Postgres, Redis, and GCP Implement responsive, accessible, and elegant UIs using Tailwind and Shadcn Own CI/CD, observability, and performance More ❯
Senior Full Stack Engineer - THE AI Scale-Up of 2025 Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js React Typescript Node Are you a product-focused Senior Full Stack Engineer who enjoys autonomy and wants to build products from end-to-end? If so, read on Senior Full Stack Engineer - We … have found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They believe in building fast and iterating, working … Stack Engineer for them? The Senior Full Stack Engineer will have experience of building complex solutions in product-driven companies with good knowledge of some or all of React, Next.js and Typescript on AWS. You will need a product mindset, working closely with the product team and being comfortable making decisions on new products and features which will impact users. More ❯
