Founding Product Engineer Software Engineer | C# | .NET | React | TypeScript | FinTech | Start-Up | London We are seeking a talented Software Engineer to join as a Founding Product Engineer at an early-stage fintech. You will work on building an instant, transparent, and affordable payments network. This role is perfect for a Software Engineer who thrives in a start-up environment … + Location: London (near Kings Cross) 5 days per week What youll do: Work directly with leadership to design, build, and launch the core platform using C#, .NET, TypeScript, and React. Write high-quality, maintainable code daily as a hands-on Software Engineer. Build backend APIs, front-end web apps, and systems integrations using C# and .NET, with React … and TypeScript on the front end. Leverage AI tools to design, debug, and ship features faster, boosting productivity. Influence architectural decisions, including enterprise patterns such as microservices, DDD, and CQRS. Who you are: Experienced in C#, .NET,with 3+ years experience as a Software Engineer. Comfortable working across the full stack and adapting to new technologies quickly. Its preferred More ❯
Frontend Developer - React, TypeScript & Next.js - Marketing Agency exp - Up to £500/day (Outside IR35) - remote (UK based) - 3 month contract We're looking for a skilled Frontend Developer to join a global, research-driven tech company building next-generation blockchain and decentralized systems. You'll help create user interfaces for products that power real-world applications - from digital … Work with designers and backend teams to deliver polished, user-friendly interfaces. Integrate with APIs, smart contracts, and decentralized systems. Write clean, testable, and scalable code in React/TypeScript/Next.js . Contribute to UI performance, design systems, and open-source tools. What we're looking for: 5+ years' frontend experience (JavaScript/TypeScript/React). More ❯
Edinburgh, Scotland, United Kingdom Hybrid / WFH Options
Explore Group
developing scalable, high-performing web applications, driving best practices, and shaping the evolution of our frontend architecture. This is a great opportunity to contribute to projects that combine React , TypeScript , and emerging AI-driven features , with exposure to Python on the backend. What You’ll Do Build and maintain responsive, performant, and accessible frontend applications using React and TypeScript … performance optimisation. (Senior) Mentor junior engineers and influence wider engineering decisions. (Optional) Work with AI-driven components and Python-based APIs to enhance application intelligence. Tech Stack Core: React, TypeScript, HTML5, CSS3 (SASS/Styled Components) Tooling: Webpack, Vite, Jest, Cypress Backend exposure: Python/FastAPI/Django (desirable) AI/ML Integration: Experience or curiosity around AI-driven More ❯
livingston, central scotland, united kingdom Hybrid / WFH Options
Explore Group
developing scalable, high-performing web applications, driving best practices, and shaping the evolution of our frontend architecture. This is a great opportunity to contribute to projects that combine React , TypeScript , and emerging AI-driven features , with exposure to Python on the backend. What You’ll Do Build and maintain responsive, performant, and accessible frontend applications using React and TypeScript … performance optimisation. (Senior) Mentor junior engineers and influence wider engineering decisions. (Optional) Work with AI-driven components and Python-based APIs to enhance application intelligence. Tech Stack Core: React, TypeScript, HTML5, CSS3 (SASS/Styled Components) Tooling: Webpack, Vite, Jest, Cypress Backend exposure: Python/FastAPI/Django (desirable) AI/ML Integration: Experience or curiosity around AI-driven More ❯
broughton, central scotland, united kingdom Hybrid / WFH Options
Explore Group
developing scalable, high-performing web applications, driving best practices, and shaping the evolution of our frontend architecture. This is a great opportunity to contribute to projects that combine React , TypeScript , and emerging AI-driven features , with exposure to Python on the backend. What You’ll Do Build and maintain responsive, performant, and accessible frontend applications using React and TypeScript … performance optimisation. (Senior) Mentor junior engineers and influence wider engineering decisions. (Optional) Work with AI-driven components and Python-based APIs to enhance application intelligence. Tech Stack Core: React, TypeScript, HTML5, CSS3 (SASS/Styled Components) Tooling: Webpack, Vite, Jest, Cypress Backend exposure: Python/FastAPI/Django (desirable) AI/ML Integration: Experience or curiosity around AI-driven More ❯
dunfermline, north east scotland, united kingdom Hybrid / WFH Options
Explore Group
developing scalable, high-performing web applications, driving best practices, and shaping the evolution of our frontend architecture. This is a great opportunity to contribute to projects that combine React , TypeScript , and emerging AI-driven features , with exposure to Python on the backend. What You’ll Do Build and maintain responsive, performant, and accessible frontend applications using React and TypeScript … performance optimisation. (Senior) Mentor junior engineers and influence wider engineering decisions. (Optional) Work with AI-driven components and Python-based APIs to enhance application intelligence. Tech Stack Core: React, TypeScript, HTML5, CSS3 (SASS/Styled Components) Tooling: Webpack, Vite, Jest, Cypress Backend exposure: Python/FastAPI/Django (desirable) AI/ML Integration: Experience or curiosity around AI-driven More ❯
Basingstoke, Hampshire, England, United Kingdom Hybrid / WFH Options
Noir
Frontend Developer - SaaS - Basingstoke (Hybrid, 3 days in office) (Tech stack: Frontend Developer, React, TypeScript, Tailwind CSS, HTML, CSS, Playwright, UX, Web Accessibility, Agile, SCRUM, Frontend Developer) Our client is a fast-growing SaaS company that helps businesses test and improve the quality of their digital products and services. With a reputation for building one of the best platforms … a Frontend Developer, you will play a central role in shaping and enhancing the product used by thousands of professionals worldwide. Responsibilities: Develop and enhance product features using React, TypeScript, and Tailwind CSS. Convert designs into responsive, semantic HTML and CSS. Produce clean, maintainable, and well-tested code with strong coverage. Write end-to-end and component tests with More ❯
We're looking for a Senior-level Software Engineer with strong JavaScript/TypeScript skills and experience across modern web stacks. You'll be instrumental in our transition away from Drupal as we modernise and scale our platform. Tech Stack: At least 4 years commercial experience with JavaScript or TypeScript and Node Exposure of Laravel and/or More ❯
City of London, London, Cathedrals, United Kingdom
The Portfolio Group
We're looking for a Senior-level Software Engineer with strong JavaScript/TypeScript skills and experience across modern web stacks. You'll be instrumental in our transition away from Drupal as we modernise and scale our platform. Tech Stack: At least 4 years commercial experience with JavaScript or TypeScript and Node Exposure of Laravel and/or More ❯
of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental in shaping our technical direction, driving the evolution of our APIs, ensuring our services are resilient, scalable and secure within a cutting … edge, cloud-native environment (Helm, Kubernetes). The Deliverables Design and build sophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. Lead the design and evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. Champion best practice in code quality, automated testing (Vitest, Playwright) and observability to deliver resilient, maintainable … technical strategy by working within a cross-functional Agile team to guide process improvements and make key architectural decisions. Experience Extensive production experience architecting and delivering complex applications with TypeScript and Node.js . Expert level GraphQL , including advanced API design, schema evolution, performance optimisation. Strong automated testing frameworks like Vitest and Playwright . Proficiency with modern DevOps tooling and More ❯
re passionate about building the next generation of trading apps You care about the product as much as the code - you build with users in mind Full-stack, polyglot - TypeScript, Python, Rust, whatever gets the job done You take ownership, move fast, and know when to bring others in You communicate clearly - sharp thinking, no hand-holding needed Our … stack: TypeScript, React, Python, a bit of Rust, AWS with a bunch of monitoring tools sprinkled in. The latest web3 tools as standard foundry, rainbowkit, wagmi, viem, etc. We keep it simple and don't employ elaborate systems where it's not needed. We utilise AI strategically but understand when not to rely on it What goes on in More ❯
deeply hands on. You will be responsible for working on backend services, focusing on platform engineering and building CI/CD pipelines. You will be developing in Node.js and Typescript, and will have a strong focus on AWS Services, such as EKS, Dynamo DB and S3. What will I be doing? Own and evolve the backend architecture for a … and API design. Key requirements: 7+ years' experience in backend or platform engineering roles, with recent experience at senior/staff level. Deep hands-on expertise with Node.js and TypeScript in production environments. Strong experience designing and deploying microservices and RESTful APIs. Proven experience with AWS (EKS, DynamoDB, S3, Lambda, Terraform). Solid understanding of CI/CD pipelines … DevOps principles, and Infrastructure as Code. Experience leading or influencing technical direction across multiple teams. Familiarity with frontend technologies (React, TypeScript) beneficial but not essential. If this role sounds of interest, please apply and someone will be in touch regarding the role. We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their More ❯
Manchester, England, United Kingdom Hybrid / WFH Options
Suits Me
Role As an Application Engineer, you’ll build and operate customer-facing and internal application services that power our Core Banking and Product stacks. You’ll work mainly in TypeScript (Node.js), delivering microservices on our serverless and container platforms, and shaping reliable, secure, and observable services for a fast-moving fintech. You’ll collaborate with engineers across squads to … that everyone deserves a safe, accessible, and modern way to manage their money, regardless of background, income, or employment status. What you’ll be doing Designing, building, and shipping TypeScript services and serverless functions for our Core Banking and Product domains Defining and evolving API contracts, including versioning, pagination, and error models. Implementing domain logic across payments, accounts, cards … closely with the wider Application Engineering team as well as with Platform, and Security teams to ensure reliability, scalability, and compliance What you’ll bring to Suits Me Solid TypeScript fundamentals and interest in building backend services Understanding of HTTP, REST principles, and common API patterns Familiarity with SQL/NoSQL basics and data modelling Exposure to containers/ More ❯
bolton, greater manchester, north west england, united kingdom Hybrid / WFH Options
Suits Me
Role As an Application Engineer, you’ll build and operate customer-facing and internal application services that power our Core Banking and Product stacks. You’ll work mainly in TypeScript (Node.js), delivering microservices on our serverless and container platforms, and shaping reliable, secure, and observable services for a fast-moving fintech. You’ll collaborate with engineers across squads to … that everyone deserves a safe, accessible, and modern way to manage their money, regardless of background, income, or employment status. What you’ll be doing Designing, building, and shipping TypeScript services and serverless functions for our Core Banking and Product domains Defining and evolving API contracts, including versioning, pagination, and error models. Implementing domain logic across payments, accounts, cards … closely with the wider Application Engineering team as well as with Platform, and Security teams to ensure reliability, scalability, and compliance What you’ll bring to Suits Me Solid TypeScript fundamentals and interest in building backend services Understanding of HTTP, REST principles, and common API patterns Familiarity with SQL/NoSQL basics and data modelling Exposure to containers/ More ❯
warrington, cheshire, north west england, united kingdom Hybrid / WFH Options
Suits Me
Role As an Application Engineer, you’ll build and operate customer-facing and internal application services that power our Core Banking and Product stacks. You’ll work mainly in TypeScript (Node.js), delivering microservices on our serverless and container platforms, and shaping reliable, secure, and observable services for a fast-moving fintech. You’ll collaborate with engineers across squads to … that everyone deserves a safe, accessible, and modern way to manage their money, regardless of background, income, or employment status. What you’ll be doing Designing, building, and shipping TypeScript services and serverless functions for our Core Banking and Product domains Defining and evolving API contracts, including versioning, pagination, and error models. Implementing domain logic across payments, accounts, cards … closely with the wider Application Engineering team as well as with Platform, and Security teams to ensure reliability, scalability, and compliance What you’ll bring to Suits Me Solid TypeScript fundamentals and interest in building backend services Understanding of HTTP, REST principles, and common API patterns Familiarity with SQL/NoSQL basics and data modelling Exposure to containers/ More ❯
JOB TITLE: Senior Full Stack Developer (React, TypeScript, .NET) REPORTS TO: Head of Development JOB PURPOSE As a Senior Full Stack Developer, you will play a critical role in designing, developing, and maintaining scalable, secure, and robust web applications. This role involves leveraging your expertise in React, TypeScript, .NET Core, and cloud technologies to build innovative solutions. Your More ❯
JOB TITLE: Senior Full Stack Developer (React, TypeScript, .NET) REPORTS TO: Head of Development JOB PURPOSE As a Senior Full Stack Developer, you will play a critical role in designing, developing, and maintaining scalable, secure, and robust web applications. This role involves leveraging your expertise in React, TypeScript, .NET Core, and cloud technologies to build innovative solutions. Your More ❯
JOB TITLE: Senior Full Stack Developer (React, TypeScript, .NET) REPORTS TO: Head of Development JOB PURPOSE As a Senior Full Stack Developer, you will play a critical role in designing, developing, and maintaining scalable, secure, and robust web applications. This role involves leveraging your expertise in React, TypeScript, .NET Core, and cloud technologies to build innovative solutions. Your More ❯
JOB TITLE: Senior Full Stack Developer (React, TypeScript, .NET) REPORTS TO: Head of Development JOB PURPOSE As a Senior Full Stack Developer, you will play a critical role in designing, developing, and maintaining scalable, secure, and robust web applications. This role involves leveraging your expertise in React, TypeScript, .NET Core, and cloud technologies to build innovative solutions. Your More ❯
london (city of london), south east england, united kingdom
Venquis
JOB TITLE: Senior Full Stack Developer (React, TypeScript, .NET) REPORTS TO: Head of Development JOB PURPOSE As a Senior Full Stack Developer, you will play a critical role in designing, developing, and maintaining scalable, secure, and robust web applications. This role involves leveraging your expertise in React, TypeScript, .NET Core, and cloud technologies to build innovative solutions. Your More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Venn Apps
for 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 … a hybrid 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 … shape new 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 More ❯
for 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 … a hybrid 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 … shape new 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 More ❯
london, south east england, united kingdom Hybrid / WFH Options
Venn Apps
for 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 … a hybrid 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 … shape new 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 More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Venn Apps
for 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 … a hybrid 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 … shape new 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 More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Venn Apps
for 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 … a hybrid 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 … shape new 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 More ❯