164,102+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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QA Engineer in London Onmo

Proficiency in Test Case Design Proficiency in designing, executing, and documenting test cases with excellent attention to detail. Expertise in Test Code Development Expertise in writing test code in TypeScript, including custom utilities, assertions, and framework configuration. ...

Senior Site Reliability Engineer in London Xtremepush

Overview We are seeking a Senior Site Reliability Engineer (SRE) with experience working with scaled SaaS production infrastructure. The successful candidate will work as part of a team focused on site reliability, security, and scalability, managing rapid growth. Responsibilities include maintai ...

Implementation Consultant Dynamics NAV in London Quant Capital

Implementation Consultant Dynamics NAV London, United Kingdom Posted about 1 year ago Tech Stack Excel SQL XML JavaScript Skills and Experience Required Rapidstart XML SQL Server / De ...

Frontend UI Engineer: Data Visualisation & ML Insights

A technology company in Greater London is looking for a skilled UI Developer to create responsive, intuitive user interfaces using React. The role involves building and iterating on UIs for data visualization and integration with backend APIs. Candidates should have deep experience in building production-quality ...

Lead Product Engineer in London Fyxer AI

Required Expertise You should have a technical/hands-on expert level understanding of Typescript and serverless architecture. If you don’t have these, you shouldn’t apply. Technology Stack Firebase Auth as our auth system Backend deployed on Firebase Functions, a ...

Founding Product Engineer in London Tracer.cloud Inc

Experience (required) 3+ years building and launching complex full-stack applications independently Deep expertise in Next.js, React, and TypeScript Proven ability to ship and maintain production-grade systems end to end Experience deploying and scaling applicati ...

Full Stack Product Engineer (Frontend focused) in London Gizmo

Full-Stack Product Engineer (Frontend focused) London, United Kingdom Posted 11 months ago Tech stack Accessibility Product Tailwind CSS React APIs Python TypeScript Frontend UX < ...

Software Engineer Vulnerability Management in London Starling Bank

Software Engineer - Vulnerability Management London, United Kingdom Posted 9 months ago Tech stack Vue.js TypeScript JavaScript Qualifications Interest in Cyber Security, specifically Vulnerability Management Famili ...

Senior Software Engineer (Backend) in London LinuxRecruit

Senior Software Engineer (Backend) London, United Kingdom Posted 10 months ago Tech Stack Python Software Engineer API Express Azure TypeScript Artificial Intelligence Backend Re ...

UI Developer Trading Platform in London Barclays

Requirements for UI Developer Position: To be successful as a UI Developer within this team, you should have: Strong proficiency in JavaScript, TypeScript and Angular or React. Good experience of developing scalable, data-intensive applications using grid components (ag-grid ...

SaaS API Integrations Engineer

This is a job posted by our partner Jooble Below is a snippet of the job description. To read the full text, please click on the Apply Now link. Overview Requirements Ideally within a SaaS or cloud-based environment Experience designing and building API-drive ...

Product Engineer (Front End) in London Log my Care

Product Engineer (Front End) Location: London, United Kingdom Posted 10 months ago Tech Stack TypeScript React React Native Responsibilities & Qualifications End-to-end feature delivery in a production environment ...

AI Agent Reliability Engineer Chaps in London Craft Docs Limited, Inc.

Skills and Requirements You should possess the following skills and qualifications: Automation You are adept at automating A/fluency, few-shot, function-calling, RAG orchestration, and have a talent for spotting ambiguity or jailbreak vectors. Technical Skills </h ...

Full Stack Senior Engineer in London Loopla

About Us Loopla is an online family events platform with a mission to grow and develop a web-based events platform and event management system. We are a small, dynamic team based in London with a passion for connecting families through engaging and memorable experiences. About the Role </h ...

Retail Security Officer in London MAN Commercial Protection

Retail Security Officer London, United Kingdom Posted 9 months ago Tech stack React Security Main Responsibilities: Customer focused and comfortable to interact and deal with members of the public on a day-to-day basis. React ...

Computing Teacher Outstanding School in Harrow ASAP... in London Perham Education Partnership

Computing Teacher - Outstanding School in Harrow - ASAP London, United Kingdom Posted 12 months ago This is a job posted by our partner Jooble Tech Stack Python JavaScript Responsibilities Ensuring students gain strong te ...

Senior MLops (Full Stack) Engineer | London | Foundation Models in London SoCode Recruitment

Why Join Us? Tackle the biggest challenge in AI - Be part of the mission to bend the What you'll do Build and maintain APIs (FastAPI or similar) to serve ML models Design and manage robust ML infrastructure using Kubernetes, Docker, and Terraform Deploy mach ...

React.JS Developer Hedge Fund Typescript in London Quant Capital

React.JS Developer – Hedge Fund – Typescript £120k Plus Bonus Quant Capital is urgently looking for a React.JS Developer to join our high profile client. Our client is a $2 billion strong quant hedge fund with performance figures of 22%. They are currently looking for React.JS Developers to join the ...

Front End Engineer in London Fuse Energy

Requirements: Bachelor's degree in a highly analytical discipline. Experience: Possess a minimum of 5 years of professional experience in web development using TypeScript, React, JavaScript, HTML, CSS and Next.js (nice to have). Demonstrate deep proficiency with browser ...

Senior Platform Engineer in London YouLend

Overview Job posted by our partner Jooble. To read the full text, please click on the Apply Now link. Job Title Software Engineer, Nifty Gateway (Fullstack); Staff-Level Full-Stack Software Engineer Location 108 E 16th Street, New York, NY 10003 Responsibi ...

Javascript with Agile Software Engineer Central London (IT) in London Nexus Jobs Limited

Production Environments Must have experience with JavaScript (vanilla JS, prototypes, scoping, design patterns, memory profiling). Track Any Experience Experience with the following skills would be pretty handy: Node.js or other programming languages Cross-platfo ...

Engineering Team Lead Node.js & AWS (Hands On)

What You Bring Proven ability to lead engineering teams while still being hands-on Deep experience in Node.js, Vue or React, PostgreSQL, and AWS Strong grasp of DevOps, CI/CD, and secure SDLC practices Comfort with mobile (Cordova, iOS/Android) and... Help Us Build the F ...

Senior Software Engineer in London TradingHub

Senior Software Engineer London, United Kingdom Posted 12 months ago Tech stack React ASP.NET Core Vue.js Skills Required Strong knowledge of ASP.NET Core including creating and maintaining websites Expe ...

Senior Software Developer in London May & Stephens

Senior Software Developer London, United Kingdom Posted 9 months ago Responsibilities and Qualifications Equivalent experience along with a formal project management qualification. Technical Proficiencies Angular GitHub Azure D ...

Mobile Product Engineer in London Sebratec

Mobile Product Engineer Location: London, United Kingdom Posted 11 months ago Tech Stack Mobile UI TypeScript React React Native Product Responsibilities Excellent UI and product sense <l ...

Full Stack Engineer (Front End Focus) in London Printerpix

Coding Experience Experience in XHTML, HTML5, CSS3, and JavaScript (ideally 5+ years). JavaScript & Frameworks Strong JavaScript skills with Node.js experience. Minimum 2 years’ experience in either Vue or React (essential). Next.js Experience preferable. ...

Azure Cosmos DB Administrator and Developer in London Infoplus Technologies UK Ltd

Design and Implementation Partitioning strategies, indexing, and consistency models should be carefully designed and implemented to ensure optimal performance. Build Reusable Libraries Consider building reusable libraries and frameworks using C#/.NET or Node.js to promote ...

Frontend HTML5 Developer Slough in London Quant Capital

Tech Stack HTML5, CSS3, JavaScript, Angular, React Client Details My client is based in Slough, SL2 and offers one of the best training and development packages in the market, all inclusive. Job Opportunity Challenge: Develop Greenfield systems and increase functional ...

Software engineer, frontend (UK) in London Writer

Required Skills You’ll need solid knowledge of JavaScript and TypeScript, HTML, and CSS. We’re also looking for strength in with Mobx, React, and Redux. Responsibilities You’ll be our resident expert on frontend best practices and be a player/coach with the rest of the frontend tea ...

Machine Learning Software Engineer Full Stack (LLM) in London Aquent

Machine Learning Software Engineer - Full Stack (LLM) London, United Kingdom Bachelor’s degree in Computer Science, Computer Engineering, or a related technical background. Experience Backend software engineering experience in Python. Responsibilities and Requirement ...

Frontend Engineer [Mid Senior Eng] in London Noon Academy

Professional Experience Years of experience as a frontend software engineer with consumer mobile products. Experienced in React, React Native and TypeScript/JavaScript or equivalent. Empowering and mentoring are important to you, and you love teaching your skills and approach to others. </p ...

Full Stack React / Python Developer in London Student.com

Job Purpose We are looking for a talented Full Stack Next.js / Python Developer with expertise in Python, mySQL, React, React Native, and Next.js and Typescript to join our dynamic team. The ideal candidate should have a strong background in building... Requirements Proven ...

QA Engineer in London Trade Nation

Automated Testing Tools and Scripting Languages When it comes to automated testing, familiarity with tools like Playwright, Cypress, K6, and Postman is crucial. In addition to these tools, having experience with scripting languages like TypeScript and JavaScript is highly preferred. Skills ...

Engineering Manager (React Native) in London Zapp

Engineering Manager (React Native) London, United Kingdom We’re looking for an experienced and passionate Engineering Manager to lead our mobile development efforts. You’ll be instrumental in building out our in‑house React Native team while collaborating closely with product and design t ...

AI Data & Automation Engineer Real Time Data & React UIs

Infrastructure and Development Responsibilities Build and maintain data lakes, warehouses, and real-time processing systems. Develop React-based frontends for data visualization and automation tools. Leverage AI coding assistants for rapid prototyping and understanding of modern A ...

Engineering Manager in London RedCloud

Engineering Manager London, United Kingdom Posted 10 months ago Tech Stack React JavaScript Amazon AWS C# Node.js In This Role You will build a culture of technical excellence and collaboration, scal ...

Senior React Native Engineer in London MILE

Senior Member Responsibilities As a senior member, you’ll play a pivotal role in shaping our customer-facing experiences across both our mobile app (React Native) and web platforms (React), including dashboards and our marketplace UI. This is a high-impact role for someone who thrives in an engineer ...

Lead Full Stack Engineer in London Zapp

Essential Skills 5+ years of BE experience with Node.js 5+ years working with Typescript 3+ years experience building UIs in React Comfortable with data design and database architecture Experience working with SQL & NoSQL databases Fur ...

Fullstack Product Engineer in London Fyxer AI

Experience and Skills You’ve worked at an early stage tech company as a product-focused engineer. Your experience includes: Working with databases Implementing Firebase Auth as the authentication system Using backend deployed on Firebase Functions and making use ...

Frontend Engineer React/TypeScript Leader & Player Coach

Required Skills You’ll need solid knowledge of JavaScript and TypeScript, HTML, and CSS. We’re also looking for strength in with Mobx, React, and Redux. Responsibilities You’ll be our resident expert on frontend best practices and be a player/coach with the rest of the frontend tea ...

React Django Developer Slough in London Quant Capital

Job Opportunity: React Django Developer Our client, a well-known global quantitative risk management and market data business, is seeking a React Django Developer to join their team. The ideal candidate will be responsible for contributing to the development of sound software development processes a ...

Senior Frontend Engineer (React, TypeScript, GraphQL)

Frontend Software Development Experience With over 5 years of experience in frontend software development, we are well-versed in creating dynamic and user-friendly interfaces. Preferred Skills A STEM background would be advantageous, but we are open to working with individuals w ...

Senior Applications Manager — Hybrid London

The Role The Senior Manager for Applications (many Legal) will fulfill a strategic role delivering legal technology services and client-facing leadership for the firm’s digital business. They will communicate technical concepts effectively to a non‑technical audience and have experience delivering ...

Applications Senior Manager in London Brimstone Consulting

The Role The Senior Manager for Applications (many Legal) will fulfill a strategic role delivering legal technology services and client-facing leadership for the firm’s digital business. They will communicate technical concepts effectively to a non‑technical audience and have experience delivering ...

Remote Front End Developer Spinach Branding

We are seeking a talented Front-End Developer. Duration: 3-4 weeks Location: Studio or Remote The ideal candidate will be responsible for: Building two Wordpress websites Configuring and developing various plugins to ensure a smooth and user-friendly experien ...

Frontend HTML5 Developer Build Greenfield, High Traffic Apps

Tech Stack HTML5, CSS3, JavaScript, Angular, React Client Details My client is based in Slough, SL2 and offers one of the best training and development packages in the market, all inclusive. Job Opportunity Challenge: Develop Greenfield systems and increase functional ...

Senior Frontend Engineer in London Isometric

Frontend Software Development Experience With over 5 years of experience in frontend software development, we are well-versed in creating dynamic and user-friendly interfaces. Preferred Skills A STEM background would be advantageous, but we are open to working with individuals w ...

IT Director in London Zachary Daniels

IT Director London, United Kingdom Posted about 1 year ago Tech stack Next.js Supply chain Artificial Intelligence Innovation Innovation and Future-Scanning Keep an eye on what's next - from AI styling bots to ...

Lead Backend Engineer (WordPress, PHP, Gutenberg) Agency in London Salt Search Ltd.

Role: Develop enterprise-level WordPress plugins and/or themes primarily using PHP and Gutenberg blocks in React.js. Drive strategy in collaboration with experts across multiple disciplines, and lead overall technical vision and delivery on large-scale projects. Work with multiple stak ...

Senior Platform Engineer Infra as Code & Observability

Requirements Experience with infrastructure as code. Hands-on experience coding, ideally in Python, Go, or Typescript with a focus on clean, maintainable code. Experience with observability tools and incident management. Staff-Level Full-Stack So ...

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