276 to 300 of 383 React Jobs in the City of London

who leads by example and lifts others up. A full-stack problem-solver who’s not afraid to dive into backend or infra. Tech Requirements Mobile Engineering experience with React Native (5+ years) Product engineering experience Strong frontend skills, full-stack comfort (they are tech agnostic on the backend) TypeScript TDD React (a plus) You’ll Need: Product Mindset Lead More ❯

applied machine learning or MLOps (not just academic or notebook-based work) Exposure to event-driven architectures, streaming systems (Kafka, etc.), or real-time data pipelines Frontend experience in React, TypeScript, or similar modern frameworks 📈 What We Offer Early-stage equity and the opportunity to shape foundational decisions High ownership, zero bureaucracy — build what matters, fast Founders who value engineers More ❯

Fullstack Developer – Python | Reactjs/TypeScript | AWS 💵 £60,000 - 90,000 + share options 📦 Private medical + GP service | 25+ days holiday | Paid sabbaticals | Flexible working 💻 Python, ReactJS/TypeScript, AWS 📍 Central London, hybrid (1 day per week) 🧑‍💻 Profitable FinTech We're partnered with a profitable, VC-backed fintech scale-up that’s helping thousands of small businesses across Europe … quickly, and be excited to launch and scale this new product. Ideal Profile: Strong backend software engineering experience with relevance to their stack (Python) Proficient in front end technologies (React and TypeScript) Experience building scalable back end systems, ideally for customer-facing products Clear experience building and consuming RESTful APIs Bonus Points For: A strong numerical or technical background, underpinned … a high-impact opportunity to shape a major revenue channel at one of Europe’s leading fintech innovators – with the freedom, tooling, and support to grow. Fullstack Developer – Python | Reactjs/TypeScript | AWS More ❯

Mid Level Full-Stack Developer (Python/Django/React) Work Model: Office based ( 5 days a week) Job Type: Full-Time Salary: £60-75K Were looking for a Mid Level Full-Stack Developer (Python/Django/React) with 3+ years of experience to join a Fashion Retail business in London. You will be joining a recently built … What Were Looking For Comp Sci or STEM Degree 3-5 years of experience in full-stack development, with a focus on Python and Django . Strong experience with React or React Native for building dynamic, responsive front-end applications. Proficiency in AWS Experience with SQL Experience with Shopify is a bonus Key Responsibilities Design, develop, and maintain full-stack … applications using Python, Django, and modern front-end frameworks (React, React Native, or similar). Develop and maintain RESTful APIs and integrate third-party services. Build scalable, secure, and high-performance backend architectures. More ❯

Frontend Software Engineer – React/React Native | EdTech Startup Join one of the UK’s most exciting early-stage EdTech startups as their 2nd engineering hire . This is a rare opportunity to get in early, help shape the technical direction of the company, and work on a product with a genuinely positive impact in the education space. What you … ll do: Work closely with the founding team to build and iterate on the core platform Own and deliver high-quality frontend features using React, React Native, and JavaScript Help shape the engineering culture and best practices from the ground up Contribute to the product roadmap with a strong user and impact focus Nice to have: Experience with gamification or More ❯

Senior React Developer required for an exciting sports technology start up with a fantastic product based around fan interaction during live sporting events. You will be joining a business who are already at the forefront of their industry and have a small but highly skilled team. The primary skills required are React + Typescript, and if you could also bring … some skills with React Native that would be a huge bonus! In this Senior React Developer/Senior Frontend Developer role we are looking for an experienced Senior Front End Developer to work remotely apart from 1-2 days a month where you would need to come to the London office or go to client meetings (expenses paid). There … here and ample chance to learn new skills in a fantastic niche that spans both sports (& esports) technology and broadcasting, as you evolve with the company. Your previous Senior React Developer experience will need to include: 4+ years commercial experience in Front End development, using React + Typescript (+ Webpack) Experience using and consuming REST APIs React Native experience would More ❯

Product Engineer - HealthTech - Fully Remote Salary: £80,000 - £110,000 + Equity Industry: HealthTech/Tech for Good 🏥 Location: Fully Remote UK with Offices in London Tech Stack: GO, React, TypeScript, Node.js 🚀 Company Overview 🌱 Our client is an early-stage, VC-backed AI startup on a mission to redefine the wellness space. Backed by top-tier investors and already seeing … phase of growth. The Role 🛠 Early stage startup hire — huge ownership and autonomy Working closely with the founders to bring the product vision to life GO backend, TypeScript/React frontend - open to Node.js experience on Backend too Must be able to operate in a full stack environment React Native is a bonus Desired Skills 🎯 GO React TypeScript/Node More ❯

Senior Frontend Developer (React) | FinTech | Hybrid London | up to £80,000 + 10% bonus Company Overview: We are working with a client who is a leading Private Equity Data Analytics firm. They transform complex PE data into actionable insights for CIOs, CFOs, and General Partners, using AI to predict future fund performance. Role: They're seeking a Senior Frontend Developer … with strong expertise in React and TypeScript to enhance the user experience of their data analytics platforms. You'll be a key contributor in building intuitive and responsive interfaces. Responsibilities: Develop, maintain, and improve complex frontend applications using React and TypeScript. Collaborate with designers and backend developers to implement high-quality, scalable UI components. Translate business needs into technical solutions … and ensure best practices in frontend architecture. Mentor junior developers and provide technical guidance on frontend technologies. Qualifications: Extensive hands-on experience with React and TypeScript. Proven ability to build complex, high-performance web applications. Familiarity with RESTful APIs and backend integration. Experience with testing frameworks If you are interested in the Senior Frontend position, please apply directly by submitting More ❯

Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options Remote First – London Office for those who want it 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 … 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 closely … Full 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 More ❯

You 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 More ❯

that help them identify, assess, manage, and mitigate risks effectively. Their platform offers software solutions that support enterprise risk management, compliance management, health and safety, and incident reporting. Stack: React, Node, Nextjs, AWS Responsibilites: Develop and maintain responsive web applications using React and Next.js for frontend development. Write scalable, reusable, and efficient TypeScript code for both frontend and backend. Build More ❯

team modernising platforms and services as part of a major transformation programme. 🔧 What You’ll Be Doing Building and maintaining robust Java backend systems Collaborating on the Angular frontend (React may follow in future streams) Championing a test-first, iterative delivery approach Contributing to team discussions and continuous improvement 🧠 What You’ll Bring Strong experience with Java backend development Solid … full stack capability (Angular now, React later) A quality-first mindset with ownership of testing Clear, structured communication and a collaborative attitude ✅ Must-Haves Available to work onsite near Liverpool Street 2 days/week (non-negotiable) Comfortable constructively challenging delivery practices Able to communicate clearly and directly—no rambling! If you're looking to join a forward-thinking team More ❯

Evaluate user requests for new or modified computer programs to determine feasibility, cost, time required and compatibility with current systems and capabilities. Create full stack applications from scratch utilizing Reactjs, PHP/Hack. Create Python Applications eg: - Data swarm pipelines, automation libraries etc. Skills: - Verbal and written communication skills, problem solving skills, customer service and interpersonal skills. Ability to work … and software. Knowledge of end-to-end systems development life cycles. Knowledge of computer development software as it relates to systems, such as SQL, Visual Basic, etc. Expertise with Reactjs, PHP, Hack, Kotlin, Ruby. Expertise with Python and Web Applications. 8+ years of experience. Education/Experience: Master’s degree in computer science preferred. More ❯

with LangChain, AutoGen, CrewAI, DSPy and similar tools Cloud & MLOps (AWS): Deploy with SageMaker, Bedrock, Lambda, S3, ECS, EKS Full-Stack Integration: Build APIs (FastAPI, Flask) and integrate with React, TypeScript, Node.js Vector Search: Use FAISS, Weaviate, Pinecone, ChromaDB, OpenSearch Required skills & experience: 3–5+ years of experience in ML engineering and software development Deep Python proficiency, with PyTorch, TensorFlow … or Hugging Face Proven experience with LLMs, RAG, and deploying cloud-native AI on AWS Strong full-stack skills (React, TypeScript, Node.js) and API development Familiarity with vector databases and multi-agent frameworks Apply now to join this high growth and award-winning organisation with the opportunity to be part of building the future of AI driven projects and solutions. More ❯

a pivotal role in building and scaling the platform. You’ll take ownership of end-to-end feature delivery - from architecture and backend development (Python) to intuitive frontend experiences (React) - and collaborate closely with product, design, and AI engineering teams to deliver real user impact. Ideal candidates will have: 5+ years of full-stack experience with Python and modern JavaScript … frameworks (React/Next.js preferred) A product mindset, strong technical fundamentals, and ability to move quickly in a start-up setting Experience mentoring others, contributing to architecture decisions, and a passion for shipping great software Apply Now: If you’re excited by the opportunity to shape the future of data-driven tech in a fast-moving, high-ownership environment, apply More ❯

Senior Full-Stack Engineer (Python, React, TypeScript) Salary: Up to £110,000 + Equity London – 2 Days a week Opportunity to join a small, product-focused team building a new kind of interface for automation and human intersection. With a core team made up of industry leaders from the likes of Meta, DeepMind and Goldman Sachs and a client list … about craft, simplicity, and building great user experiences, not just writing code. You'll thrive in this role if you: Have strong experience with modern web technologies like Python , React , TypeScript , and Next.js Care about design, UX, and how things feel — not just how they work Are product-driven, customer-focused, and excited to own problems end-to-end Enjoy More ❯

Analyst Developer C# SQL Server T-SQL Kafka React.js Financial Technology Projects 6-monthly rolling contract 500 - 550 p/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home We are seeking a C# Analyst Developer to join a dynamic IT team on a contract basis. This role focuses on maintaining … new dev, you will be working on a variety of apps. This is a 6 monthly rolling assignment. Key Skills: C# .net Visual Studio SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX, trade lifecycle Regulatory reporting (MiFIR/EMIR) Key Responsibilities: Collaborate with stakeholders to gather More ❯

Analyst Developer C# SQL Server T-SQL Kafka React.js Financial Technology Projects 6-monthly rolling contract £500 - £550 p/d outside IR35 Central London (Tower Hill tube) 4 days in the office/1 day from home We are seeking a C# Analyst Developer to join a dynamic IT team on a contract basis. This role focuses on maintaining … new dev, you will be working on a variety of apps. This is a 6 monthly rolling assignment. Key Skills: C# .net Visual Studio SQL Server T-SQL Kafka React.js Front-office/back-office trading applications: Fidessa, TT, CQG. GMI, ETDs, CFDs, fixed income, FX, trade lifecycle Regulatory reporting (MiFIR/EMIR) Key Responsibilities: Collaborate with stakeholders to gather More ❯

architectures Hands on-experience with API development and App development Expertise in Microservices, with a strong understanding of cloud technologies and modern software development practises Strong programming background in React, React Native, JavaScript and Node or equivalent languages More ❯

the company - from architecture to implementation Work closely with design, product, and stakeholders to define features and deliver intuitive, impactful experiences Modernise and maintain their frontend stack (currently using React), integrated with a Django-based backend and microservices Own frontend tooling and technical direction - choosing what’s right for now and what scales for the future Contribute meaningfully to product … and performance optimisation Help them build a culture of quality code, design thinking, and continuous improvement What we’re looking for: Significant experience in modern frontend development, ideally with React A strong grasp of UI/UX principles and a track record of translating product goals into elegant, functional interfaces Comfortable with (or open to learning) Django and how frontend More ❯

meaningful contributions in the world of sports analytics. Key responsibilities for the role of Front-End Developer include: Build responsive, accessible, and high-performance front-end interfaces using Next.js, React.js, and Tailwind CSS. Collaborate with designers, analysts, performance staff, and backend/cloud engineers to create modern, cloud-ready applications. Develop analytics dashboards for coaches and performance staff to explore … environment. As the selected Front-End Developer, your background will include: 3+ years industry experience in a Front-End Developer role and a strong academic background. Strong proficiency in React.js , Next.js , and Tailwind CSS. Experience building dashboards or data-driven web applications. A solid understanding of cloud platforms. Familiarity with integrating REST APIs or GraphQL endpoints. Knowledge of performance tuning More ❯

full ML lifecycle, from data collection and preprocessing to model evaluation, deployment, and monitoring. Full-Stack Integration : Develop APIs and integrate ML models into web applications using FastAPI, Flask, React, TypeScript, and Node.js. Vector Databases & Search : Implement embeddings and retrieval mechanisms using Pinecone, Weaviate, FAISS, Milvus, ChromaDB, or OpenSearch. Required skills & experience: 3-5+ years in machine learning and … development Proficient in Python, PyTorch or TensorFlow or Hugging Face Transformers Experience with RAG, LLM fine-tuning, and expertise in AWS and cloud-native AI deployments. Full-stack experience (React, TypeScript, Node.js) and API development. Familiarity with vector search and multi-agent orchestration Apply now to join this high growth and award-winning organisation with the opportunity to be part More ❯

and experience: Front/Back lean does not matter so much, we're in need of help on both sides. Typescript experience essential Vue.js 2/3 experience essential (React experience is fine as well, as long as they're willing to use Vue 3) AWS experience ideal (particularly Lambda, S3, ECS) Full-Stack Developer (Vue.js/Node.js) – Tech for More ❯

and infrastructure. Qualifications/Experience: Mandatory: • Enthusiasm for programming and solid computer science fundamentals. • A minimum of 6 years experience of building enterprise systems using modern browser-based technologies. • React, Typescript to expert level • Ability to develop reusable frameworks. Desirable: • Experience in front office electronic trading • Order Management and Financial Products More ❯

projects Collaborate cross-functionally across account teams, product management and engineering teams Provide technical expertise and support throughout the project lifecycle You will have a strong background in Python, React, Next.js, TypeScript, FastAPI, Postgres. You will also have a strong education background with a Computer Science degree. Please note – I am not in the office and working from home on More ❯