172,134+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Backend Engineer, Crypto Trading (Hybrid London)

A leading technology company in London is seeking a Software Engineer to design and maintain backend services for crypto trading. This role requires expertise in Go, Java, C++, C#, or Python, and offers a hybrid work environment. Ideal candidates will have problem-solving skills and a proactive mindset, along wi ...

Cloud DevOps Engineer | AWS/Azure/GCP, TDD, Agile, NPPV3

Requirements Familiarity with cloud platforms including AWS, Azure and GCP. Understanding of TDD (Test Driven Development). Familiarity with scripting languages such as Bash, Perl, Python or Go. Familiarity with Agile ways of working. Strong communica ...

Senior QA Automation Tester UI, API & Microservices

Scrumconnect Consulting is seeking a skilled QA Automation Tester to build and execute automation frameworks for government digital services. The ideal candidate has over 6 years of experience and is proficient in Java, JavaScript, and various automation tools like Playwright and Selenium. This role re ...

Lead Backend Engineer — Cloud & API Focus

User Experiences and Business Goals Making progress towards our business and team goals also includes focusing on enhancing user experiences. Who Are We Looking For? We are seeking individuals with expertise in languages like Java , C#, or Go (or similar backend languages). ...

Lead Product Engineer in London Gravity Sketch

User Experiences and Business Goals Making progress towards our business and team goals also includes focusing on enhancing user experiences. Who Are We Looking For? We are seeking individuals with expertise in languages like Java , C#, or Go (or similar backend languages). ...

Graduate Quality Engineer: Shape Quality in Scalable Systems

Trayport is looking for a passionate Quality Engineer to join their team in Greater London. You will be essential in defining and executing quality strategies, performing exploratory and technical testing, and enhancing the software development process. Ideal candidates will have a strong background in software ...

London Engineering Manager Frontend & Scale Leader

Java Script Works is seeking an Engineering Manager based in London, United Kingdom. This full-time role requires a leader with strong expertise in Node.js, React, JavaScript, Next.js, and TypeScript. The candidate should have experience managing engineering teams and ensuring best coding practices. While the co ...

QA Automation Engineer for Trading Platforms

A leading workforce solutions company in the UK is looking for a QA Automation Engineer to ensure high reliability in trading systems. Responsibilities include building test frameworks, executing tests, and collaborating with developers. The ideal candidate should have experience with Java or Python testing fram ...

Principal Software Engineer — Lead Modern Systems (Bonus + Shares)

A leading cloud and software engineering consultancy in Greater London seeks a Principal Software Engineer to provide senior technical leadership. You'll design and evolve scalable software systems, mentor engineers, and influence architectural standards. Ideal candidates have strong experience in Java/Spring, m ...

Staff Software Engineer: Tech Lead & Architect (Hybrid UK)

A leading consulting firm is seeking a Staff Engineer to provide technical leadership and mentor team members while working on complex software projects. This hybrid role based in Paddington, UK, requires strong Java skills and experience in the retail domain. You'll shape technology strategies, tackle challengi ...

Software Engineer Analytics & Data Pipelines

Apple is looking for a Software Engineer in London to join the Analytics and Data Engineering team. You will develop large-scale systems to power Apple’s services like the App Store and Apple Music. The ideal candidate should have experience with distributed systems and proficiency in Java or Scala, or equivalen ...

Mission Software Engineer Connected Warfare Systems

A defense technology company is seeking a Mission Software Engineer to integrate third-party systems with their products. The role requires a strong software engineering background and at least 3 years of experience in languages such as Java, Python, and C++. Responsibilities include developing architecture, cre ...

Software Engineer — AI‑Driven Cross‑Border Payments

Crown Agents Bank is seeking a Software Engineer to join its FX and Cross-Border Payments team. The role involves designing and delivering solutions for clients globally, utilizing modern technologies like Kotlin, Java, and AWS. Candidates should have a solid background in software development, experience with s ...

Senior Distributed Systems Engineer Pricing at Scale

Expedia.com Ltd. is seeking a Distributed Systems Engineer to own mission-critical services end-to-end for high-throughput pricing systems. Responsibilities include analyzing complex problems, mentoring team members, and advocating for operational excellence. The ideal candidate will hold a Bachelor’s ...

Backend Engineer HFT & Crypto Systems (London On Site)

A high-growth blockchain infrastructure company based in Greater London seeks a talented Backend Engineer to develop backend systems for trading and digital asset platforms. The role requires over 5 years of expertise in backend engineering, particularly in high-frequency trading, alongside proficiency in C++, R ...

Full Stack Engineer (Magnolia/ContentStack) – Hybrid

Phoenix Court Group seeks a Software Engineer (Magnolia/ContentStack FullStack) to join the 'Browse' team in London. This hybrid role focuses on enhancing the customer browsing experience for our e-commerce platform. Ideal candidates will have experience with CMS, Java, TypeScript, and NextJS, along wi ...

Field Deployments Software Engineer for Autonomous Systems

Understanding Recruitment is hiring a Deployed Software Engineer in Greater London, UK. This role involves deploying cutting-edge AI software into real operational environments while collaborating with customers and users. Candidates must have strong software engineering skills in languages such as Python, C++, ...

ML Software Engineer (Python/React) – Contract, London

Java Script Works is seeking a Machine Learning Software Engineer for a contract role based in London, United Kingdom. The candidate should have a Bachelor's degree in Computer Science or a related field and possess backend experience in Python, as well as frontend skills in JavaScript and React. This position i ...

Senior Algo Trading Engineer Low Latency & SOR (AVP)

Citibank (Switzerland) AG is seeking a Senior Software Engineer for Algo Trading in London. The role involves designing and delivering algorithmic trading and Smart Order Routing (SOR) platforms, requiring strong technical expertise in Low Latency Java, C++, or Rust. Collaboration with traders and quantitative r ...

Remote Cloud Engineer — AWS, Terraform & Security

Java Script Works is seeking a talented Cloud Engineer for a full-time remote position. The successful candidate will have experience with cloud technologies including AWS, scripting languages such as Python and Node.js, and infrastructure as code tools like Terraform. Although the pay is competitive, no specifi ...

Lead Audio Software Product Manager

Java Script Works is seeking an Engineering Product Manager based in Greater London, United Kingdom. The ideal candidate will have a strong background in audio software development and experience with C++, JUCE, JavaScript, and Python. This role demands successful technical leadership and product management expe ...

Lead Integration Architect: Cloud Native API First

W3Global is seeking an Integration Architect based in Greater London, UK, to define and own the integration architecture. The role requires deep expertise in event-driven architecture and various technologies such as Java, AWS, and microservices. The ideal candidate must have over 15 years of experienc ...

Senior Software Engineer, Controllers & Financial Systems

WeAreTechWomen is seeking a Controller Engineer to design systems supporting financial measurement and reporting in an Agile environment. The role involves managing the entire systems development process and collaborating with Finance stakeholders. Ideal candidates have a Bachelor’s degree and over six ...

Market Data Software Engineer – Hybrid & Big Data

hackajob is partnering with TradingHub to find a talented Software Engineer in London. In this role, you will design and maintain market data environments and work closely with Pricing Quants and Risk Strats. The ideal candidate has strong experience in C#, Python, or Java, with a background in financi ...

Senior Backend Engineer Fraud & Risk Systems (RSU)

hackajob is seeking a Backend Engineer in Greater London to develop a fraud engine that supports fast-paced product releases while managing risk effectively. You will collaborate with cross-functional teams, ensuring a balance between scalability and security. The ideal candidate has strong experience ...

Applied Scientist, Advertising ML for Growth (London)

Amazon Development Centre (London) Limited is seeking an Applied Scientist for a full-time role focused on advertising. The ideal candidate will hold a PhD or a Master's degree with experience in computer science, machine learning, or related fields. This position requires proficiency in programming la ...

Senior Applied Scientist – Brand Safety & ML Systems

Amazon is seeking a Sr. Applied Scientist in Brand Safety in London, United Kingdom. The ideal candidate should have expertise in programming languages, including Java and Python, along with experience in machine learning and optimization. This full-time position offers competitive compensation and requires a so ...

Senior Applied Scientist – Optimization & ML for ATS

WorksHub is seeking a Senior Applied Scientist to join their team in London, United Kingdom. The ideal candidate will hold a Master's degree and have experience in programming languages such as Java, C++, and Python. The role involves working on advanced neural deep learning and machine learning method ...

Senior Data Platform Engineer Spark Threat Analytics Equity

CrowdStrike is seeking a Senior Software Engineer to join their data engineering team in Greater London. This role focuses on creating and maintaining a hyper-scale data lake for threat detection, requiring extensive experience in backend development and data platforms. The ideal candidate will have ov ...

Senior Gen AI Architect Cloud Native ML Solutions

TestYantra Software Solutions is seeking a Sr. Gen AI Architect with over 7 years of experience in AI/ML architecture. The role involves designing and deploying generative AI models and requires hands-on experience with tools like TensorFlow and PyTorch. This hybrid position located in London also nece ...

Hybrid HCL Commerce Engineer Scale Driven Backend

DCV Technologies is looking for a Specialised Engineer - HCS Commerce to enhance their digital commerce platform in London. The role includes designing and maintaining HCL Commerce components while ensuring scalability and performance standards. Candidates will need hands-on experience with Java and a ...

VP of Site Reliability Engineering Scale & Automation

hackajob is looking for a Vice President – Site Reliability Engineer in London to enhance automated engineering solutions for Production Services. The role demands expertise in full-stack development, with proficiency in Python, Java, React, and Angular. You will collaborate with diverse teams, focusin ...

Senior Backend Engineer AI & Security Integrations

Harmonic Security is seeking a Backend Engineer in Greater London, United Kingdom. This role involves designing and maintaining scalable integrations between various security systems, focusing on high-performance applications within the Java ecosystem. The ideal candidate will have 3–5+ years of softwa ...

Senior Software Engineer, Guest & Host: EU Backend Lead

Traveltechessentialist in Greater London is looking for a skilled software engineer with at least 5 years of backend/full-stack experience. The role involves architecting complex features and collaborating with various teams to enhance the company's offerings. The ideal candidate will have strong Java and/or Kot ...

Backend Engineer Scale Payments Microservices (Hybrid)

Dangote Industries Limited in Greater London is seeking a skilled Backend Engineer to join their Hold team. You will contribute to developing new account types and scaling platforms that directly impact millions of customers' money management. The ideal candidate will be proficient in Java, Python, or ...

Senior Full Stack Engineer – AI‑Driven Backend (London)

BNY is seeking a Senior Associate, Full-Stack Engineer in London. In this role, you will design and maintain backend services while collaborating on frontend development. Key responsibilities include delivering secure, scalable systems and contributing to performance enhancements. Required qualificatio ...

Applied Scientist, Global Personalization & Recommendations

A renowned multinational company is seeking an Applied Scientist to develop machine learning models for personalization and recommendations. The ideal candidate will hold a PhD or Master's degree in a relevant field and possess experience in programming languages like Java, C++, and Python. Responsibilities incl ...

Computing Teacher for GCSE & A Level Prep

Perham Education Partnership is seeking a Computing Teacher for an Independent Boys’ School in Brent, London. The role involves developing students’ programming and problem-solving skills, supporting them in learning coding languages like Python, Java, and C++, and preparing them for GCSE and A-Level assessments ...

React Developer Hybrid Working Up to £175,000 Base (+ Bonus)

React Developer – Data team - Junior, mid-level and senior positions. Client: Elite Systematic Trading Firm Location: London (Hybrid Working) Compensation: Up to £175,000 Base + Bonus Overview An elite systematic trading firm is seeking a ...

Principal Platform Engineer: AI, Reliability & Leadership (Hybrid/Remote)

LexisNexis Risk Solutions is looking for a Principal Engineer to guide technical direction across teams, focusing on system modernization and AI applications. This full-time role involves collaborating with various teams to enhance reliability and scalability of platforms. Candidates should have extensive backen ...

Lead Audio Software Product Manager

Java Script Works is seeking an Engineering Product Manager based in Greater London, United Kingdom. The ideal candidate will have a strong background in audio software development and experience with C++, JUCE, JavaScript, and Python. This role demands successful technical leadership and product management expe ...

Lead ETRM Solutions Architect

Castleton Commodities International (CCI) is hiring a Lead ETRM Solutions Architect to expand our Commodities Trading Technology team. This role sits at the center of our end-to-end trading lifecycle and is responsible for defining, architecting, and evolving the applications and integrations that support ...

Lead ETRM Solutions Architect

Responsibilities: Define and own the architecture for applications and services across the end-to-end commodities trade lifecycle.Lead the design of integrations between ETRM platforms and surrounding systems, establishing scalable patterns and standards utilizing te ...

Lead ETRM Solutions Architect

Responsibilities: Define and own the architecture for applications and services across the end-to-end commodities trade lifecycle.Lead the design of integrations between ETRM platforms and surrounding systems, establishing scalable patterns and standards utilizing te ...

Senior Backend Engineer

About Us Ready for a challenge and adventure? At XYZ Reality, we are a well-established, award-winning Series-A startup accelerating toward our next funding round. Our mission is to expand our platform, enhancing features, performance, and scalability while revolutionizing the constructio ...

Front End Developer

Role: Frontend Developer (Angular) Location: Hybrid Position Type: Contract We are looking for an Angular/JavaScript Developer with experience in developing complex web‑based front-end applications. Responsibilities and Qualifications Experience in developing compl ...

NetSuite Developer and Integration Lead

Title: NetSuite Developer Location: London Hybrid: 3-4 days a week onsite Salary: £75,000 + Our client a large scale software company is seeking a permanent NetSuite Technical Administrator to join there company on a permanent basis. The NetSuite Techn ...

NetSuite Developer and Integration Lead

Title: NetSuite Developer Location: London Hybrid: 3-4 days a week onsite Salary: £75,000 + Our client a large scale software company is seeking a permanent NetSuite Technical Administrator to join there company on a permanent basis. The NetSuite Techn ...

NetSuite Developer and Integration Lead

Title: NetSuite Developer Location: London Hybrid: 3-4 days a week onsite Salary: £75,000 + Our client a large scale software company is seeking a permanent NetSuite Technical Administrator to join there company on a permanent basis. The NetSuite Techn ...

Senior Director of Software Engineering

If you are a software engineering leader ready to take the reins and drive impact, we’ve got an opportunity just for you. As a Senior Director of Software Engineering at JPMorgan Chase within the Commercial and Investment Bank Global Equity Derivatives Sales Technology team, you will lead a technic ...

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