london (city of london), south east england, united kingdom
Investigo
full-stack applications at scale. Strong backend development skills in Python or Go, with experience designing APIs and working with databases such as PostgreSQL and Redis. Proven experience with React and TypeScript, including component libraries and data-fetching tools like react-query. Familiarity with infrastructure-as-code tools and cloud platforms (preferably AWS). Experience with CI/CD pipelines More ❯
user at the forefront. Collaborate closely with Product Owners, QA, and wider stakeholders, translating technical concepts for non-technical audiences. Balance leadership with hands-on development work – primarily in React , with some exposure to Python back-end development considered a bonus. Drive continuous improvement in front-end processes, frameworks, and tools to elevate product quality and performance. About You Expert … in modern JavaScript (ES6+) and TypeScript, with deep knowledge of HTML5, CSS/SASS/LESS, and responsive design. Extensive experience with React and its ecosystem (Hooks, Context, State Management, Routers, Next.js). Proven experience as a hands-on technical leader, guiding teams, setting engineering direction, and mentoring engineers. Strong understanding of UI/UX principles and collaborative experience with … design teams using tools like Figma. Solid knowledge of consuming and integrating with RESTful APIs. Experienced in Test Driven Development (TDD), with practical skills in Jest, React Testing Library, Cypress, or Playwright. Comfortable in agile, product-led environments, with experience in CI/CD workflows. Proven problem solver, capable of making decisions independently while collaborating effectively with cross-functional teams. More ❯
Improve performance, reliability, and scalability of the platform Embrace AI tools to boost productivity and automate wherever possible Tech Stack Languages : TypeScript (core), Python/Ruby (data flow) Frontend : React preferred; Angular, Vue, or Node.js welcome Infrastructure : AWS Databases : Neo4j (nice to have) Integrations : Shopify About You Strong experience with TypeScript on the backend Confident managing complex API integrations (Shopify … a big plus) Comfortable with React , Python , or similar technologies Experienced in cloud-first environments (AWS) Background in startups or scale-ups Passionate about automation and leveraging AI in development Bonus Points For: Graph databases like Neo4j Experience with payment gateways or fraud detection systems Knowledge of MongoDB/Mongoose Familiarity with CATIA or other CAD system integrations Experience with More ❯
london (city of london), south east england, united kingdom
Urban Digital Recruitment Ltd
Improve performance, reliability, and scalability of the platform Embrace AI tools to boost productivity and automate wherever possible Tech Stack Languages : TypeScript (core), Python/Ruby (data flow) Frontend : React preferred; Angular, Vue, or Node.js welcome Infrastructure : AWS Databases : Neo4j (nice to have) Integrations : Shopify About You Strong experience with TypeScript on the backend Confident managing complex API integrations (Shopify … a big plus) Comfortable with React , Python , or similar technologies Experienced in cloud-first environments (AWS) Background in startups or scale-ups Passionate about automation and leveraging AI in development Bonus Points For: Graph databases like Neo4j Experience with payment gateways or fraud detection systems Knowledge of MongoDB/Mongoose Familiarity with CATIA or other CAD system integrations Experience with More ❯
across front-end, back-end, and infrastructure layers Collaborate with clients, customer success, and engineering teams to identify root causes and deploy effective solutions Work hands-on with Node.js, React, SQL, and AWS to maintain and enhance platform functionality Contribute to improving support processes, documentation, and system reliability Continuously develop your technical knowledge across a range of technologies Required Skills … Experience: 3+ years’ experience in Node.js development Proficiency in TypeScript and JavaScript Experience with React , Express , and REST API development Strong understanding of SQL and Git Excellent analytical and problem-solving skills A genuine enthusiasm for learning and tackling complex technical challenges Bonus Experience (Nice to Have): AWS (hosting, deployment, configuration) Agile development practices Experience in technical customer support Knowledge More ❯
london (city of london), south east england, united kingdom
rmg digital
across front-end, back-end, and infrastructure layers Collaborate with clients, customer success, and engineering teams to identify root causes and deploy effective solutions Work hands-on with Node.js, React, SQL, and AWS to maintain and enhance platform functionality Contribute to improving support processes, documentation, and system reliability Continuously develop your technical knowledge across a range of technologies Required Skills … Experience: 3+ years’ experience in Node.js development Proficiency in TypeScript and JavaScript Experience with React , Express , and REST API development Strong understanding of SQL and Git Excellent analytical and problem-solving skills A genuine enthusiasm for learning and tackling complex technical challenges Bonus Experience (Nice to Have): AWS (hosting, deployment, configuration) Agile development practices Experience in technical customer support Knowledge More ❯
ll be at the heart of a high-performing engineering team, building intuitive, high-impact web applications that bring complex data to life. Working with cutting-edge technologies like React and TypeScript , you’ll collaborate closely with product, design, and data science teams to shape interfaces that define the future of shipping intelligence. This is a hands-on technical role … ideal for someone who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles More ❯
london (city of london), south east england, united kingdom
Impala Search
ll be at the heart of a high-performing engineering team, building intuitive, high-impact web applications that bring complex data to life. Working with cutting-edge technologies like React and TypeScript , you’ll collaborate closely with product, design, and data science teams to shape interfaces that define the future of shipping intelligence. This is a hands-on technical role … ideal for someone who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles More ❯
City of London, London, United Kingdom Hybrid / WFH Options
SpectrAxe
join SpectrAxe — the first true all-to-all, anonymous FX options trading platform. If you have very strong middle-tier development skills (and/or full-stack experience with React) and are ready to take the next step in your career — where your work has real impact in a fast-moving, startup environment — I'd love to hear from you. … with Docker & CI/CD (Jenkins, GitHub Actions, etc.) Bonus Points For: Financial services , trading systems background Messaging systems (RabbitMQ, Kafka) AWS or other cloud platforms TypeScript, RxJS, GWT, React Low-latency system design experience What we offer - Competitive salary & bonus - Hybrid working (2–3 days in London office) - Work on a cutting-edge fintech platform with global impact - Collaborative More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
SpectrAxe
join SpectrAxe — the first true all-to-all, anonymous FX options trading platform. If you have very strong middle-tier development skills (and/or full-stack experience with React) and are ready to take the next step in your career — where your work has real impact in a fast-moving, startup environment — I'd love to hear from you. … with Docker & CI/CD (Jenkins, GitHub Actions, etc.) Bonus Points For: Financial services , trading systems background Messaging systems (RabbitMQ, Kafka) AWS or other cloud platforms TypeScript, RxJS, GWT, React Low-latency system design experience What we offer - Competitive salary & bonus - Hybrid working (2–3 days in London office) - Work on a cutting-edge fintech platform with global impact - Collaborative More ❯
accountability, continuous development, and teamwork. We are committed to creating a supportive environment that fosters your career growth from day one. Key Responsibilities: Implement front-end features for a React application that visualises and interacts with scientific data and workflow progression. Integrate AI/ML components with the frontend, backend, data, and compute infrastructure. Ensure high-quality software implementations according … with other technical staff and data engineers to build an end-to-end pipeline that leverages various data products. Basic Qualifications: 5+ years of experience in frontend software development (React). Proven experience in Python development (FastAPI preferred). Bachelor's degree in a relevant field (computational, numerate, or life sciences) or equivalent experience. Essential cloud experience (Google Cloud and More ❯
ll be working on critical middle and back-office systems that support trading and operations functions. Key Responsibilities Design, develop, and maintain full stack applications using C# backend and React frontend Build and enhance middle and back-office systems supporting fund operations Collaborate with business stakeholders including fund accounting, operations, and trading teams Develop scalable, high-performance solutions for financial … data processing Participate in code reviews and maintain high development standards Required Skills & Experience Strong proficiency in C# .NET (Core preferred) for backend development Solid experience with React and modern JavaScript frameworks Experience with SQL Server and database design Proven experience working on middle/back-office systems in financial services Understanding of fund operations workflows and processes Experience with More ❯
london (city of london), south east england, united kingdom
Cross Atlantic Partners
ll be working on critical middle and back-office systems that support trading and operations functions. Key Responsibilities Design, develop, and maintain full stack applications using C# backend and React frontend Build and enhance middle and back-office systems supporting fund operations Collaborate with business stakeholders including fund accounting, operations, and trading teams Develop scalable, high-performance solutions for financial … data processing Participate in code reviews and maintain high development standards Required Skills & Experience Strong proficiency in C# .NET (Core preferred) for backend development Solid experience with React and modern JavaScript frameworks Experience with SQL Server and database design Proven experience working on middle/back-office systems in financial services Understanding of fund operations workflows and processes Experience with More ❯
City of London, London, United Kingdom Hybrid / WFH Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
with human support to give users back what matters most: time . About the Role As our Senior Full Stack Engineer , you’ll work on a modern tech stack (React, Python, AWS, Bedrock) to deliver new features, improve performance, and shape the success of our platform, mobile app, and client-facing websites. This is an exciting opportunity for someone with … development. You’ll collaborate directly with the founding team and other senior developers while having a genuine impact on product direction. Your Role: Building and maintaining features across frontend (React) and backend (Python/PHP/Flask/FastAPI) Designing, developing, and deploying scalable APIs Contributing to system architecture and technical strategy Writing, testing, and shipping high-quality production code … third-party UX/UI designers and incorporating customer feedback Troubleshooting and debugging complex issues Essential Skills 6+ years’ experience in a full stack development role Strong proficiency with React and modern JavaScript/TypeScript Solid backend experience with Python and/or PHP Database experience (MySQL; Airtable is a bonus) Familiarity with AWS (RDS, EC2, S3; Bedrock ideal) Git More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
with human support to give users back what matters most: time . About the Role As our Senior Full Stack Engineer , you’ll work on a modern tech stack (React, Python, AWS, Bedrock) to deliver new features, improve performance, and shape the success of our platform, mobile app, and client-facing websites. This is an exciting opportunity for someone with … development. You’ll collaborate directly with the founding team and other senior developers while having a genuine impact on product direction. Your Role: Building and maintaining features across frontend (React) and backend (Python/PHP/Flask/FastAPI) Designing, developing, and deploying scalable APIs Contributing to system architecture and technical strategy Writing, testing, and shipping high-quality production code … third-party UX/UI designers and incorporating customer feedback Troubleshooting and debugging complex issues Essential Skills 6+ years’ experience in a full stack development role Strong proficiency with React and modern JavaScript/TypeScript Solid backend experience with Python and/or PHP Database experience (MySQL; Airtable is a bonus) Familiarity with AWS (RDS, EC2, S3; Bedrock ideal) Git More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Wave Talent
Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they’re looking … day — thanks to a rock-solid CI/CD setup Collaborate closely with product, design, and leadership to shape the roadmap Tech stack you’ll be working with : TypeScript, React, Node.js, AWS Serverless (Lambda, DynamoDB, EventBridge) What you’ll be doing: This isn’t just about writing code, it’s about owning problems end-to-end and influencing every part … observable as we scale to hundreds of enterprise customers. Collaborate closely with product, design, and leadership to set roadmap priorities and define technical strategy. Work across the stack — from React frontends to AWS serverless backends — and own your projects from infrastructure to styling. Deploy continuously (multiple times per day) using their robust CI/CD pipelines. Mentor other engineers and More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Wave Talent
Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they’re looking … day — thanks to a rock-solid CI/CD setup Collaborate closely with product, design, and leadership to shape the roadmap Tech stack you’ll be working with : TypeScript, React, Node.js, AWS Serverless (Lambda, DynamoDB, EventBridge) What you’ll be doing: This isn’t just about writing code, it’s about owning problems end-to-end and influencing every part … observable as we scale to hundreds of enterprise customers. Collaborate closely with product, design, and leadership to set roadmap priorities and define technical strategy. Work across the stack — from React frontends to AWS serverless backends — and own your projects from infrastructure to styling. Deploy continuously (multiple times per day) using their robust CI/CD pipelines. Mentor other engineers and More ❯
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, loves … 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. … with 3+ years experience as a Software Engineer. Comfortable working across the full stack and adapting to new technologies quickly. Its preferred that candidates have worked with TypeScript/React however this role is Backend leaning. .NET Software Engineers with limited Frontend exposure or different frameworks are encouraged to apply. Ambitious and highly driven, with an interest in start-up More ❯
City of London, London, United Kingdom Hybrid / WFH Options
rmg digital
company’s clients and customer success team to identify the source of a technical problem and then fixing those problems. This role covers a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this is a great opportunity to learn and expand all those skills. What we’re looking for from a Back … the company’s platform features and technologies from the ground up. Experience needed as a Back End Developer: 3+ years of Node.js development Type Script/Strong JavaScript skills React REST API development SQL Git More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
rmg digital
company’s clients and customer success team to identify the source of a technical problem and then fixing those problems. This role covers a lot of technologies, from UI, React, system configuration, Node.js backend code, databases and AWS hosting. So this is a great opportunity to learn and expand all those skills. What we’re looking for from a Back … the company’s platform features and technologies from the ground up. Experience needed as a Back End Developer: 3+ years of Node.js development Type Script/Strong JavaScript skills React REST API development SQL Git More ❯
of applied AI. The role This isnt your standard engineering role youll be working end-to-end across frontend, backend, and cloud infrastructure. Youll build sleek, scalable applications with React and Next.js, design and maintain robust APIs with Node.js and Python, and architect solutions deployed on AWS or GCP. Youll also set up and maintain CI/CD pipelines, manage … big plus. The role is full-time, 3/4 days a week in their London office. What theyre looking for Strong experience as a Full-Stack Engineer across React, Next.js, Node.js, and Python. Solid knowledge of SQL databases and data modelling. Hands-on experience with cloud platforms (AWS or GCP). Proven track record building and maintaining CI/ More ❯
to financial modelling, private equity, consultancies and asset managers, with live production deployments at leading institutions. What you’ll be doing Designing and maintaining modern frontend web apps using React/Next.js Developing robust backend services and APIs, preferably in Python (Django, FastAPI, etc.) Owning large parts of the AI agent infrastructure: building and deploying multi-agent systems, Retrieval-Augmented … critical, high-impact features Mentoring junior engineers and promoting engineering best practices What they’re looking for 5+ years of professional software engineering experience Solid, hands-on experience with React/Next.js in production environments Strong backend development skills (Python preferred) and familiarity with databases (relational or NoSQL) Experience with Git, DevOps tooling, containerisation, CI/CD, caching or messaging More ❯
london (city of london), south east england, united kingdom
THRivve by intelletec
to financial modelling, private equity, consultancies and asset managers, with live production deployments at leading institutions. What you’ll be doing Designing and maintaining modern frontend web apps using React/Next.js Developing robust backend services and APIs, preferably in Python (Django, FastAPI, etc.) Owning large parts of the AI agent infrastructure: building and deploying multi-agent systems, Retrieval-Augmented … critical, high-impact features Mentoring junior engineers and promoting engineering best practices What they’re looking for 5+ years of professional software engineering experience Solid, hands-on experience with React/Next.js in production environments Strong backend development skills (Python preferred) and familiarity with databases (relational or NoSQL) Experience with Git, DevOps tooling, containerisation, CI/CD, caching or messaging More ❯
teams; translate data-flow headaches into buildable tech projects. Prototype at pace in Python—leveraging LLM co-pilots—to stand-up analytics services, REST APIs and lightweight Dash/React front-ends. Own the full stack: data ingestion (SQL, files, feeds), business logic, web/UI, CI pipelines and Linux deployment. Codify best practice for safe, auditable LLM-assisted development … version control and optimisation. Confident SQL , exposure to REST and messaging (Rabbit, Kafka, etc.), and enough Linux to troubleshoot on the command line. UI chops in Dash, Flask or React to whip up proof-of-concept dashboards. Solid grounding in financial products & risk metrics —equities, bonds and derivatives; VaR, stress, PnL explain. Excellent communicator who never “goes dark”, loves prototyping More ❯
