301 to 325 of 343 React Jobs in London

large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Lead … Full Stack Engineer | LDN 2 Days Per Week | £50K - £120K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping ...

Senior Software Engineer – Python/React/Next.js (Agnostic Backend) £140,000–£200,000 Base + Serious equity Rare chance to join a very early stage AI platform that has just raised an unusually large Series A of close to $100 Million from tier one fintech and technology investors. … matter more than demos. What they are looking for. 5+ years with Python. Or agnostic Engineers from Go, Node, TypeScript backgrounds. Some experience in React or Next.js a bonus Individuals from strong Product Engineering environments. Successful scale up backgrounds, Engineers who have grown with a company from Series A - C. ...

department with a global leading internation bank. This senior software development position requires a candidate with outstanding skills in C# and TypeScript/React, and a robust understanding of pricing models and risk analytics for both vanilla and exotic FX derivatives. The role involves close collaboration with business analysts, traders … development practices. Required Skills & Qualifications: A degree in an IT-related subject with substantial experience in software development. Highly experienced in C#, TypeScript/React, and Quant Library integration. Solid understanding of mathematics as applied to derivatives risk and pricing. Excellent written and verbal communication skills in English. Experience working ...

Software Engineer - B2B2C Health Scale-up | Up to £75,000 + Equity | London (Hybrid – 2 days in office) JavaScript | React | Node.js | TypeScript In Product is partnered with a profitable, growing health tech scale-up operating in the B2B2C space. The business is a trusted partner to leading organisations across … things are built - without needing to be the loudest voice in the room In this role, you will... Build and maintain features using React, Node.js and TypeScript Contribute to technical decisions with support from senior engineers and leaders Work collaboratively within a squad to turn research and insight into working ...

build a state-of-the-art evaluation pipeline to objectively measure output quality and guide R&D direction. Contribute to frontend development (TypeScript/React) to integrate AI capabilities directly into user-facing workflows. Build and maintain backend services and APIs, working with Postgres databases and production infrastructure. Research … evaluation pipelines Hands-on experience with LLMs and prompt engineering. Familiarity with backend development and databases. Experience of with front-end UX (React). Exceptionally clear written and verbal communication skills. A strong sense of ownership, urgency and accountability for outcomes. Comfortable working in fast-moving, ambiguous environments with ...

Solutions Engineer (Media) London/Hybrid £65,000–£75,000 Are you a technically strong engineer with a passion for building tools that make marketing smarter? We’re partnering with a fast-growing, global performance ...

Full Stack Java Software Engineer (React.Js) required for my client in London. Paying £50k-£75k. My client are a growing B2B & B2C technology company. They require a Full Stack Java Software Engineer (React.Js) to join them on a full-time basis. This role is remote but there is expectation … week in London. Required experience Java 18+ experience Spring/Spring Boot PostgreSQL or similar Maven/Gradle REST APIs Microservices React.Js Desirable: Vue.Js experience ...

Senior Software Engineer, Python, Django, ReactJS, JavaScript, PHP, Mainly Remote, Central London Senior Software Engineer (Python, Django, ReactJS) required to work for a fast growing and exciting business based in Central London. However, this role is mainly remote. We need an experienced Python Developer who is a good people person ...

front-office trading platform used directly by traders and quants. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading platforms from the ground up. Candidates who wish to apply must have previous experience … development of front office trading systems and must be comfortable facing to the traders and quants. Required skills: Full stack development experience using React + Python React: AG Grid, Charting, WebSockets and data visualisation Python: Core Python experience around multi-processing and async programming Data: Experience building data heavy trading ...

FULL STACK Engineer (Next.js/React)- TOP SaaS Company! High-Growth SaaS | Build Elegant, User-First Products Polite Note: no visa sponsorships or transfers on offer as this company does NOT have a license. In partnership with Robert Half Limited. Location: London (Hybrid working 3 days in the office … occasion such as visiting family locally or abroad) What You'll Do Build and scale complex, high-performing web applications with Next.js and React Collaborate with design and product to create polished, intuitive, responsive interfaces Drive improvements in performance, accessibility, and scalability across platforms Contribute to architecture decisions, code reviews ...

Senior Software Engineer/Developer (TypeScript React Python) London/WFH to £120k Are you a technologist with start-up experience looking for your next opportunity? You could be progressing your career at a tech start-up that is producing an AI native data pipelining platform. As a Senior Software ...

commercial operations. You'll set front-end engineering standards, influence architecture, and mentor teams while delivering scalable, data-heavy financial applications. Tech stack: React, Next.js, TypeScript, AWS, CI/CD Focus: Modernising legacy platforms, shared component libraries, performance, data visualisation Ideal background: Senior front-end engineer with leadership experience … financial services. Strong React/Next.js/TypeScript expertise Experience with monorepos, enterprise UI platforms, and modern testing practices Confident stakeholder communicator If you're looking for ownership, scale, and real commercial impact, apply or message for details. McGregor Boyall is an equal opportunity employer and do not discriminate ...

commercial operations. You'll set front-end engineering standards, influence architecture, and mentor teams while delivering scalable, data-heavy financial applications. Tech stack: React, Next.js, TypeScript, AWS, CI/CD Focus: Modernising legacy platforms, shared component libraries, performance, data visualisation Ideal background: Senior front-end engineer with leadership experience … financial services. Strong React/Next.js/TypeScript expertise Experience with monorepos, enterprise UI platforms, and modern testing practices Confident stakeholder communicator If you're looking for ownership, scale, and real commercial impact, apply or message for details. McGregor Boyall is an equal opportunity employer and do not discriminate ...

trading apps. You would be on a specialised desk and partnering with traders and researchers, helping to modernise and augment their infrastructure. Stack: Python, React/Typescript, AWS, This firm offer a scientifically driven culture, with tonnes of academic and open source resources to leverage, while offering industry leading salary ...

Senior Software Engineer Node.js/AWS/React London (Hybrid, 3 days onsite) Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior Software Engineer to join … were looking for: Strong hands-on experience with Node.js backend software development Comfortable working across or picking up other tech as needed ie AWS, React etc (If you have experience with AWS & React, that is a bonus) Enthusiasm for writing clean, tested, production-ready code Experience (or interest) in data ...

solutions. 🎯 What You’ll Do Design, build, and maintain full-stack features across the platform Develop performant and accessible front-end components u sing React (Vite) + Tailwind CSS Build scalable and type-safe APIs with tRPC running on Node.js/Express Model and query relational and search-optimized data … leading software development for a SaaS platform Proven experience with our stack (or strong adjacent experience and the ability to ramp up quickly) Frontend : React (Vite),Tailwind Backend : Node.js, Express, tRPC Database : PostgreSQL, ElasticSearch ➕ Desired Experience Previous experience in PropTech and/or start up environments Understanding ...

Role: React Developer Location: London (3 days onsite, 2 days remote) Duration: 5 months FTC Salary: £50-£60k After an extremely successful year, a Digital Agency is looking to expand its Web Development team for its growing and varied client base. You will be responsible for working closely with … client, the work is initially 5 months but could be extended! The successful candidate will have commercial experience in the following skills: React Strong Knowledge of Vanilla JS HTML5, CSS3 Experience with data visualisation/dashboard web applications. An appreciation for UI An understanding of CMS' such as WordPress, Shopify ...

Role: Software Developer (React) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript/TypeScript) This firm is an elite technology company with exceptionally high standards , known for pushing boundaries … Some of the highest-performing and most complex front-end platforms in the world Building highly responsive, scalable, and elegant UIs using modern React Collaborating with a handpicked group of top-tier engineers across frontend, backend, and infrastructure What else is in it for you? Software Engineers are treated ...

Senior Front End Engineer/Developer (TypeScript React) London/WFH to £130k Are you a Front End technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, prime broker that is replacing the legacy infrastructure used across capital … have experience within a big tech, eCommerce or other high web traffic environment You have strong front end development skills with TypeScript and React experience, building scalable web applications You take in pride in producing clean, high quality, well tested code You have experience of working on Greenfield systems ...

team supporting one of their key trading groups. The team builds advanced analytics platforms and internal tools using Python on the backend, with modern React and TypeScript driven frontends that help traders analyse markets, manage risk, and make informed investment decisions. In this role, you will work closely with traders … research applications. Projects span the full development lifecycle, from backend services and data processing in Python through to user facing interfaces built with React and TypeScript. This is a hands on position offering real ownership and responsibility, suited to someone who is proactive, technically strong, and motivated by seeing their ...

+ meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe ...

toward impact. We’d rather ship the wrong thing quickly and learn, than waste weeks polishing what nobody needs. Our tech stack: Primary: TypeScript, React, Node, SQL Frameworks: Express, React-hooks, Redux, RTK, Mantine Infrastructure: Docker, GCP, Kubernetes, Tracing, Prometheus While familiarity with our stack is helpful, we value your ...

Senior Product Engineer (Python, React, TypeScript) Are you passionate about building world-class products that empower customers globally? Join a fast-paced, venture-backed AI technology company at a pivotal stage of growth! My client are a venture-funded AI startup — already recognised as a $Unicorn and most recently achieving … deliver real impact to enterprise customers. 🔍 About the Role We are looking for a Senior Product Engineer with a strong background in Python, React, and TypeScript , who thrives in a collaborative and fast-growing environment. 📌 What You’ll Do Build scalable and maintainable features across our core product using Python ...

/Remote 6 months My client is an instantly recognisable Consultancy who are hiring a Java Developer with Active SC Clearance (Security Cleared), Java, ReactJS and NodeJS skills to work with a high profile end client. Key Requirements: Must have Active SC Clearance Strong experience in Java 1.8+ application development. … Expertise in ReactJS and NodeJS for web applications. Spring/Spring Boot development. Proficiency in Test Driven Development and design patterns for modular, reusable code. Knowledge of REST APIs, asynchronous messaging, and database integration. Familiarity with continuous delivery/integration processes. Ability to work collaboratively in an agile environment ...

work on a wide variety of projects including: Bank connectivity and transaction ingestion Live transaction categorisation Data modelling Tech Stack: Go (backend leaning), Typescript, React, PostgreSQL, Terraform, Python, LLMs where appropriate. Help shape the stack! What We’re Looking For Senior-level Product Engineer (ideally 6+ years experience), building with … other backend-focused languages A full-stack background (Typescript, React), with solid architectural fundamentals Experience handling large or complex datasets at scale, and thoughtful about data sensitivity, privacy, and personal information An interest in product and how people actually use what you build A pragmatic, ownership-driven mindset Why Join ...