131,517+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Senior Software Developer

Successful candidates may be based in any of our office locations – Cardiff, Glasgow or London. We especially welcome applicants from Cardiff and Glasgow. Job Summary Technology plays a vital role in supporting the schemes that are helping drive the UK’s transition to greener energy, and ...

Senior Backend Engineer with Content delivery experience

Job title: Senior Backend Engineer with Content delivery experienceLocation: RemoteDuration: 06 months contractAbout the Position We're looking for a Senior Engineer with experience in automated CDN configuration management and/or a background in Content Delivery to join our CDN team. In ...

Lead Frontend Developer React / Javascript / Agile £90,000 + Bonus

Job Description Our customer is currently looking for a Lead Frontend Developer who is ready to take entire ownership and bring technical leadership to the frontend technology stack. Day to day you will work with other frontend engineers in the organisation to make sure the frontends are built wi ...

AI Content Operations Engineering Manager

A leading tech firm based in London or Oslo is seeking a Senior Engineering Manager to lead a talented team focused on AI-powered content operations. The ideal candidate will have experience in engineering management and a passion for developer tools. This is an opportunity to influence product direction and nur ...

Principal AI Architect for Agentic Platforms

A deep-tech company in Greater London seeks a Principal AI Engineer dedicated to shaping AI-driven engineering workflows. You will build a platform for advanced simulation tools and lead innovative efforts in agent architecture and observability. The ideal candidate has over 4 years of platform engineering exper ...

Senior Android Engineer Enterprise Apps & UX

An innovative tech company is seeking a Senior Android Developer to lead the development of enterprise-level Android applications. You will drive user experiences that meet high standards of quality and work on projects in sectors like Finance and Healthcare. Candidates should have strong experience in Kotlin an ...

Contract Senior RPG Engineer

Spectrum IT's are partnered with a national Tech client who are looking to hire a Contract Senior RPG Engineer for an initial 6 month period, the role has been deemed INSIDER IR35 and will be UK based FULLY REMOTE WORKING. Essential Key Skills:Strong RPG development experience, including RPG/400, ...

Senior Software Engineer – Data Visualisation & Graphics | London

Senior Software Engineer | Data Visualisation & Graphics | London London (Hybrid) Salary up to £200,000 + benefits Most engineers consume visualisation libraries. A small number build them. We’re working with a highly ...

Senior Software Engineer – Data Visualisation & Graphics | London

Senior Software Engineer | Data Visualisation & Graphics | London London (Hybrid) Salary up to £200,000 + benefits Most engineers consume visualisation libraries. A small number build them. We’re working with a highly ...

Senior Software Engineer – Data Visualisation & Graphics | London

Senior Software Engineer | Data Visualisation & Graphics | London London (Hybrid) Salary up to £200,000 + benefits Most engineers consume visualisation libraries. A small number build them. We’re working with a highly ...

Senior Software Engineer I London, England, United Kingdom London, England, United Kingdom

Location: London, England, United Kingdom Join Axon and be a Force for Good. Your Impact What You’ll Do Lead engineering architecture design reviews, incorporating AI-driven insights and system modeling Set a high technical bar through code and architec ...

Software Development Engineer in Test

## Software Development Engineer in TestApplyremote type: Flexible Work Arrangementlocations: London, London, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: R69251At Medtronic you can begin a life-long career of exploration and innovation, while helping champion healthcare ...

Senior Software Engineer , DX

Python DevOps Backend Development Software Engineering Cloud Computing Join our innovative team in Prague and play a vital role in shaping the future of data storage. As a key member of our R&D center, you will be at the forefront of cutting‑edge innovation, tackling challenges in the as‑a‑service ...

Senior Software Engineer

Python Engineer (Core Trading Platform | Front Office) £80,000-£120,000 base salary plus strong package London - Hybrid We’re hiring Python Engineers to join a front office-facing platform build within a tier-one financial services organisation - this is a green ...

Deployed Software Engineer

Deployed Software Engineer UK-based | Defence Tech Customer-Facing + Real-World Deployments Why this role is exciting This isn’t a desk-only engineering role. You’ll be deploying cutting-edge AI software into real operational environments — working alongside custom ...

SRE/Support Engineer

Summary:Fantastic opportunity to join an industry-leading global market maker, using innovative and cutting-edge technology. This is an elite team of the smartest, most creative engineers, who partner with different teams across the business to solve their most pressing issues. Forget the stuffy ...

Senior Client Developer (Unity C#)

Direct message the job poster from Offroad Games Join Offroad Games, a fresh, London-based game studio founded by ex-Space Apes Games. We’re running two live games and tackling exciting technical challenges. You’ll be right in the action, working closely with the team on Chrome Valley Customs and Fastl ...

Full Stack Engineer

London (in office 3 days/ week) Product and Engineering Reporting to Senior Full Stack Engineer We're not just closing the digital divide; we're reconnecting distributed organisations, enabling seamless communication, and re‑engaging employees like never befo ...

Software Engineer II

We are looking for a Software Engineer II to take ownership of meaningful parts of our platform, shipping the features that universities depend on every day. CrunchTime is being built from the ground up as the modern alternative to legacy timetabling systems, and we need engineers who can move fast, think ...

Staff Software Engineer Warehousing Blue Yonder Dispatcher

Summary As part of the M&S Software Engineering team, you'll be joining a well-loved historic brand, working on solutions that serve millions of loyal customers and thousands of colleagues! With ethical values that run right through the company's core and technology leaders that truly understand ...

Mid Senior QA Engineer (B2B SaaS | UK)

Accessible rail travel depends on systems that work reliably in live environments. Our Passenger Assistance platform turns passenger assistance requests into coordinated action inside live rail operations. We’re hiring a QA Engineer to lead manual quality and release confidence across our U ...

Full Stack Staff Engineer

Legal & General (L&G) is a leading UK financial services group and major global investor. We’ve been safeguarding people’s financial futures since 1836, and strive to build a better society, while improving the lives of our customers and creating value for shareholders. We ar ...

PLM Consultant

This position will be supported from a home office; location can be anywhere in the UK. Maya HTT is an industry-leading software developer and engineering solutions provider focused on CAE, CAD, CAM and PLM. A long-time partner of Siemens Digital Industries Software, Maya HTT collaborates in provid ...

Senior Software Engineer (Contract)

We are GlobalLogic, a Hitachi Group Company and a leader in digital engineering. We help brands across the globe design and build innovative products, platforms, and digital experiences for the modern world. By integrating experience design, complex engineering, and data expertise - we help our clients ima ...

Senior Product Engineer, Global Payments Platform

Company Description Wise is a global technology company, building the best way to move and manage the world’s money.Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, spending abroad, or making and receiving intern ...

Lead Engineer, Trading Product Engineering

About Bullish Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high‑ ...

Lead Engineer, Trading Platform Engineering

## Lead Engineer, Trading Platform EngineeringApplylocations: Londontime type: Full timeposted on: Posted Yesterdayjob requisition id: JR ## **About Bullish**## Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: ...

Staff / Senior Lead Software Engineer Backend Platform

Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to . Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of . Morgan heritage brings. . Mor ...

Software Engineer III Front End Web JPM Personal Investing Mid Level

Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to : our straightforward and transparent approach to investing, and the trust that 150 years of , products and digital wealth management services to over 275,000 investors in ...

Staff Software Engineer

All the details We’re looking for a Staff Software Engineer to play a pivotal role in evolving M&S’s Content Domain platform. This team provides the foundational content and media capabilities that power every digital experience across the business. Your customers are product teams, engineers, an ...

C# / .NET Developer – Front Office, FX & Orchestrade Systems

Overview Join MARGO in the UK (London) MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineering environments where performance, robustness, and scalability are critical: ...

Customer Solutions Engineer

Function: Customer Solutions and Success - Financial Services Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our prestigious customer base includes 90% of the world's top investment banks. We are backed by leading private equity invest ...

Fullstack Developer with Python

We are looking for a skilled Full Stack Python Developer with strong backend expertise in Python and FastAPI , along with hands‑on experience in React and SQL . The ideal candidate will develop scalable web applications, build high-performance APIs, and collaborate across the ...

Senior Software Architect

Job Description As a Software Architect at Netcompany, you will provide technical and architecture expertise to support designing solutions users really need and want. You’ll test the art of the possible by designing proofs of concept to test solutions for future services, working with internal gr ...

Forward Deployed Engineer AI Consultancy

Responsibilities As a Forward Deployed Engineer, you will work directly with client engineering teams and ship changes that make AI‑native engineering real, leveraging the latest tools within AI‑native development. Qualifications 5+ years of commercial experience building ...

React Developer

Our client are a global consulting firm, working on a project in the Payments domain, they are on the lookout for a Frontend (React) leaning full stack engineer to come in on a contract basis. Key Skills/Requirements: Strong ReactJS experience (Hooks, State Management) Experie ...

Software Engineer II

Overview at The Trade Desk • London, United Kingdom Responsibilities As a Software Engineer II, you will be an end-to-end owner of high-scale backend infrastructure. You'll work on distributed systems handling over 1 trillion queries per day, solving complex algorithmic and op ...

Software Engineer Design Systems (AI Trainer) in London DataAnnotation

Salary £56,219 - 64,251 per year Requirements Fluency in English Proficiency in either Python and/or JavaScript Detail-oriented Excellent writing and grammar skills A bachelor’s degree (completed or in progress) Resp ...

Software Engineer II Salesforce

Software Engineer II Role Purpose The Salesforce Application Developer supports business process through technology solutions. The purpose of the role is to develop Salesforce software solutions for complex and large-scale projects through object and data modelling, database design, progr ...

Senior Software Engineer

Our client is a offering an exciting opportunity to join their fast-growing product-led SaaS business building AI-powered software that solves highly complex global finance and tax challenges for large enterprise customers. Their platform handles complex rule-driven workflows, large data sets, and e ...

Senior eFX Algo Developer

This is a hands-on, high-impact role where you’ll be a key contributor to the development of pricing, hedging, and market connectivity systems for our eFX desk. You’ll work closely with Front Office, Business Analysts, Project Managers, and QA teams to deliver robust, high-performance trading technology so ...

Junior Front End Engineer (React) Remote & Mentorship

Role : Junior JavaScript Engineer Client: Fintech Start-Up (Trading) Compensation: Up to £100,000 + Bonus Location: LondonOverview My client is a rapidly scaling fintech s ...

Junior Front End (React) Engineer

Role : Junior JavaScript Engineer Client: Fintech Start-Up (Trading) Compensation: Up to £100,000 + Bonus Location: LondonOverview My client is a rapidly scaling fintech s ...

Senior UI Developer in London Axiom Software Solutions Limited

Job Opportunity in London Location: London Contract Duration: 6 months Work Arrangement: Hybrid work (2 to 3 days per week onsite work) Client: Banking Technical Skills Required: React JS Developer Thorough un ...

Engineering Lead Insurance (Data & AI)

Engineering Lead - Insurance (Data & AI) London Alpha Financial Markets Consulting (Alpha) is a leading global consultancy to the financial services industry. We are a boutique management consulting firm that offers the world’s top industry players a competitive edge through our expertise ...

Integration Manager SC Cleared

Introduction At IBM Consulting UK FutureNow, you'll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You'll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and ...

Forward Deployed Software Engineer UK Government

A World-Changing Company Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and mor ...

Integration Manager SC Cleared

**Introduction**At IBM Consulting UK FutureNow, you'll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors.You'll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver so ...

Senior Software Engineer

We’re not just building better tech. We’re rewriting how data moves and what the world can do with it. With Confluent, data doesn’t sit still. Our platform puts information in motion, streaming in near real-time so companies can react faster, build smarter, and deliver experiences as dynamic as the world a ...

.NET Developer

Overview (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, .NET MAUI, ML.NET, Azure AI, GitHub Copilot, Docker, Kubernetes, .NET Aspire, CI/CD, HTML Living Standard, CSS Living Standard, Programmer, Full Stack Engineer, Architect, .NET Developer) Established in 1962 our client is ...

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