140,384+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Front End Engineer Ledger Live in London Ledger

Requirements 5+ years of experience in front-end software development Strong coding principles with extensive experience in any JavaScript framework, preferably React Proficiency in TypeScript is highly valued Proficiency in using testing technologies and pract ...

Full Stack Engineer for Rapid Feature Delivery

Feature Delivery Team As a member of this 4-5 strong team, you will leverage your expertise in TypeScript, Express, Node.js, Next.js, SQL, and React to build and enhance our platform. You should be comfortable assisting customers occasionally and enjoy tackling challenging tasks. Enhancing ...

AI Driven Software Engineer for Contact Center (AWS Lex)

A dynamic software company located in the City of London is looking for a skilled developer with expertise in TypeScript and AWS services, particularly in implementing DevOps best practices. The ideal candidate will write efficient code and advocate for automated testing and infrastructure as code. This role req ...

PHP Laravel Full Stack Developer (IT) in London Ripple Recruitment

Skills and Responsibilities As a developer in our team, your responsibilities will include: 1. Backend Development Developing applications using Laravel and the wider PHP/LAMP stack. Writing clean, testable code and architecting RESTful APIs. 2. Frontend Develop ...

Senior Software Engineer | ML Infrastructure in London SoCode Recruitment

Ownership of Cloud Infrastructure Kubernetes, Terraform, CI/CD pipelines Build Clean, Modern Dashboards and Analytics Tools Using React or similar Lead on System Design, Performance Tuning, and Reliability What We're Looking For ~5+ years of professional... < ...

Python Engineer in London Quant Capital

Job Opportunity: Python Engineer Quant Capital is urgently looking for a Python Engineer to join our high-profile client, a globally recognized High-Frequency Trading firm. They highly value technology, particularly the open-source variety. Requirements: Python proficiency < ...

Lead Front End Engineer(Agentic Intelligence) in London GroupM

Frameworks and Tools Approaches using frameworks like Cypress, Jest, Jasmine, Mocha, or Chai with Protractor and Karma. Package managers (NPM or Yarn). Webpack and node.js are a big plus as we tend to build our facades in it. Version control using Git with Github or GitLab. Web development with API- ...

Full Stack Javascript Software Engineer in London Quant Capital

Salary Surbiton, 30 man flat global Dev Team: £80k, Bonus- £750 training budget, Pension, Life / Health, Some Flex Working TypeScript Developers Must Have: Experience coding in JavaScript, HTML5, CSS3, Angular, React , Bootstrap, or Node.js Experience with ...

Senior Software Engineer Cyber Cloud Deployments in London Hays

Senior Software Engineer - Cyber Cloud Deployments London, United Kingdom Technical Stack NestJS Node.js JavaScript TypeScript Amazon AWS CloudFormation CDK Terraform Security API ...

PHP JavaScript Developer Fintech in London Quant Capital

Job Opening: PHP JavaScript Developer in Fintech Our client is a successful online media business and digital payments firm, experiencing high demand for their services. They are currently seeking a PHP JavaScript Developer with expertise in object-oriented and asynchronous programming. Re ...

Graduate Frontend Developer in London Graduate Recruitment Bureau

Job Requirements You will be a recent graduate or someone with 1-3 years of post‑grad work experience with a love for all things frontend. Ideally, you’ll have some experience with one or more of the technologies below: Typescript Javascript Vue 2 or 3 ...

Lead D365 Engineer (Finance) in London On

Lead - D365 Engineer (Finance) London, United Kingdom Posted over 1 year ago Tech stack C Dynamics 365 Finance TypeScript Experience and Skills With a strong background in Dynamics 365 development and implementation, particularly ...

Remote Senior Platform Engineer (Remote) Xata

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 ...

Go to Market (GTM) Engineer in London Fyxer AI

Overview Elevating Teams with Autonomy At our company, we prioritize not just supporting teams, but also empowering them with autonomy. In the role of a GTM Engineer, you will play a pivotal part in building the systems that drive more efficient and insightful go-to-market strategies. Your ...

Senior Frontend Engineer: Real Time Logistics & Payments

This is a job posted by our partner Jooble Job Overview Below is a snippet of the job description. Requirements: Experience building logistics or transport-related apps. Knowledge of real-time tracking, cloud services, and payment integration. Se ...

Backend Engineer, Growth in London Ffern

Backend Engineer, Growth London, United Kingdom Posted 10 months ago Tech stack TypeScript Backend Databases SOLID build systems Features for User Growth and Conversion Utilize your strong proficiency in a program ...

Senior Backend Engineer — APIs for Customer Growth

Senior Backend Engineer Location: London, United Kingdom Posted 11 months ago In this role you are going to be developing APIs that provide essential functionality that helps our customers grow their business. This will be the cornerstone of the Enfuce service offerings fo ...

Full Stack .net Core Developer Fintech50 Bath in London Quant Capital

Skills Required: Strong C# NET WebAPI Document-oriented databases (MongoDB, DocumentDB or others) GraphQL experience (Frontend/backend) Strong React / TypeScript Single Page Application BDD / TDD RESTful API ...

Frontend Technical Architect in London Quant Capital

Job Description My client is based in South West London. Quant Capital is urgently looking for a Technical Architect with strong frontend JavaScript Experience to join our well-known Fintech client, who is a recognized wealth management software business. We are looking for an individual with the f ...

Next.js Front End Engineer (SAAS) (Hybrid) in London Eventogy

Drive forward the development of the frontend of our platform using React.js and Next.js (15+). Collaborate with UX/UI designers and back-end developers to create visually appealing, user-friendly, responsive web applications. Proficient understanding of web markup, including HTML5, ...

VB.NET Developer Fintech50 in London Quant Capital

Platform Development for a Global High-Demand Payment Gateway The company is focusing on the development of a high-demand, high-transaction payments gateway platform. The frontend development involves the use of HTML5, Javascript , angular.js, and CSS3. On the other hand, the backend developm ...

Senior Software Engineer AI in London RedCloud

Senior Software Engineer - AI London, United Kingdom Posted 9 months ago What you’ll need: At least 6+ years of experience in software engineering, with strong proficiency in C#, Node.JS , Databases (SQL, NoSQL) and 2+ years of experience working with AI/ML technologies, fr ...

Growth Engineer (MERN) Driving Rapid Experiments

Skills and Experience Proven experience working in a software growth team or directly on product growth experiments. Strong skills across the MERN stack (Node.js, React, Express, MongoDB) are essential, along with familiarity with CI/CD workflows and cloud-based environments (AWS preferred). ...

Junior Frontend Developer Fintech in London Quant Capital

Job Description This role will involve some backend but mostly frontend development of the GUI and data display for the Quant Team. Current stack is JavaScript with frameworks with raw HTML5 CSS3 and Python at the back end. This innovative start-up is pioneering a new concept for the financial mark ...

Full Stack Engineer Identity & Credentialing

Spruce is a company that empowers users to control their identity and data across all digital interactions. They provide organizations with the tools to manage digital credentials and offer a credentialing infrastructure that is open source, standards-based. Technologies used include Docker, Docker ...

React Native Engineer: Build Seamless Mobile UX

React Native Developer (up to £55,000) Immediate is home to some of the biggest and most loved consumer brands in the UK, including Radio Times, Good Food, and BBC Gardeners World magazine. Our trusted, quality content reaches millions of people a month across digital and print. Work across ...

Lead Front End Engineer in London Aqovia

```htmlWhy Aqovia? Since 2008, Aqovia has been at the forefront of technology innovation, serving clients in telecommunications, media, and technology. We specialize in architecture, design, and software development for transformative projects. Join a team that values innovation, ... Require ...

Backend Engineer for Real Time, High Load Systems (TypeScript)

Collaborative Problem Solving Working collaboratively to solve challenging technical problems is a key aspect of our team's approach. Who You Are As a candidate, you should have demonstrable experience working with JavaScript and Typescript and show an interest in continui ...

Software Engineer II Python & Systems Design

Preferred Qualifications, Capabilities, and Skills Prior experience in Python is helpful but not required.Experience with Javascript/React helpful but not required. About Us J.P. Morgan is a global leader in financial services, providing strategic advice and delivering quality ...

Full Stack JavaScript Engineer in London Planet.fans

We’re building a membership platform for the future of live events That prioritises and rewards loyal fans. At the heart of every meaningful live event lies the desire to feel connected, valued, and part of a shared community. This shapes the experience of thousands of users. Key Responsibil ...

Senior Netsuite Developer with Javascript and SQL (IT) in London Nexus Jobs Limited

Senior Netsuite Developer Location: London, United Kingdom – Contract – Posted 10 months ago. Competitive compensation. Our Client is a leading company who is looking to recruit a Senior Netsuite Developer with extensive NetSuite OneWorld expertise. The role involves designing, developing, ...

Front End Engineer in London Blink The Employee App

Frontend Solutions Design and build efficient, reusable, and responsive UI components using modern web technologies. You will work with TypeScript, HTML, CSS, and React (or similar frameworks) to deliver high-quality frontend features. Collaborate with Cross-Functional Teams: Work closely with...o ...

Software Engineer in London Keller Executive Search International

Preferred Qualifications Experience with modern web frameworks (e.g., Angular, React, Vue.js). Familiarity with Agile development methodologies. Understanding of DevOps principles and CI/CD processes. Key Skills Ability to work well in a team envi ...

Node.js Developer (Financial Services) in London Quant Capital

Latest Development Frameworks and Tools The company utilizes the latest development frameworks and tools to create cutting edge applications. Their current stack includes Node.js/Mongo DB on the back-end and React, Flux, Backbone, JQuery, and SASS on the front-end. Node.JS Developer Requir ...

Cloud Engineer: AWS, Terraform & Serverless Innovator

A dynamic software company in London seeks a skilled developer with experience in at least one programming language such as Node.js, Python, or C#. The role offers opportunities in infrastructure automation using Terraform and working within an AWS cloud environment. Candidates should be familiar with CI practic ...

Software Engineer in London Electric Twin Ltd

Software Engineer London, United Kingdom Posted 9 months ago Tech stack PostgreSQL SaaS TypeScript Simulations Software Engineer Databases Google Cloud Platform JavaScript Popula ...

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 ...

Front End Developer Javascript, React & Typescript in London Wolf & Badger

Skills and Experience Needed With modern frontend build pipelines and tools, Also very desirable: Experience using GatsbyJS or NextJS Familiarity with Typescript Knowledge of Storybook and Design Systems Would be good: Knowledge of ...

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 Software Engineer in London Freelancer.com

Full Stack Software Engineer London, United Kingdom Tech Stack Software Engineer APIs Angular UI API rendering Full-stack TypeScript Responsibilities Contributing to rendering performance and API response ...

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 < ...

Frontend UI Engineer React + TypeScript

Frontend Solutions Design and build efficient, reusable, and responsive UI components using modern web technologies. You will work with TypeScript, HTML, CSS, and React (or similar frameworks) to deliver high-quality frontend features. Collaborate with Cross-Functional Teams: Work closely with...o ...

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 ...

Software engineer (IT) in London Computer Futures

Cross-functional teams Integration of AI capabilities into contact center solutions. Requirements Write clean, efficient, and maintainable code in TypeScript. Implement and advocate for DevOps best practices, including CI/CD pipelines, automated testing, and infrastruct ...

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 ...

React Native Developer in London Immediate Media Co

React Native Developer (up to £55,000) Immediate is home to some of the biggest and most loved consumer brands in the UK, including Radio Times, Good Food, and BBC Gardeners World magazine. Our trusted, quality content reaches millions of people a month across digital and print. Work across ...

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    Lead Java Application Developer Java Web Tech Jobs in London Job Search Guide, Trends and Insights