96,755+ Java Developer Java Developer Lead Jobs in London, UK — Local Employers Hiring July 2026

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Senior Software Engineer, Fintech Platform: Scale & Impact

Hamilton Barnes Associates Limited is seeking a product-minded engineer to join their global trading and investment firm based in Greater London. This role involves building with JavaScript/TypeScript and Node.js, owning technical problems end-to-end, and improving large-scale systems.The ideal candida ...

Strategic Data & AI Pre Sales Architect (MEA)

Cacheflow is hiring a Senior Solutions Engineer in Greater London, UK. In this role, you will leverage your technical expertise to demonstrate how our Data Intelligence Platform can help customers solve complex challenges.Responsibilities include building relationships with clients, leading strategic e ...

VP AI Solutions Architect – Cloud Native & LLM Delivery

A global financial services firm is seeking an AI Application Engineer to design, build, and deploy cloud-native AI applications. This role involves leading development efforts, collaborating with various teams, and ensuring rapid delivery of solutions leveraging AI/ML technologies. Ideal candidates will have ex ...

Automation / Performance Tester – WebDriver, Gatling, Cucumber, API

Automation / Performance Tester – WebDriver, Gatling, Cucumber, API At Difrent Group, we operate at the forefront of digital transformation in government and healthcare and are excited to announce that an opportunity has arisen for an experienced Automation / Performance Tester to join our specia ...

SRE Fixed Income

Consultant | Selby Jennings London | Connecting Top Talent with Leading Financial Firms Our client, a world-leading systematic and quantitative trading tier one hedge fund, is looking for an SRE for their London office. The role requires the individual to be skilled in programming using a high-le ...

Data Analyst

Data Analyst Onsite Requirements: Remote Start Date: ASAP Role Duration: 1 year Clerance Requirements: Active SC clearance Inside IR35 - umbrella only Role Description We're looking for a Data Engineer whose ...

Senior Software Engineer

G MASS are currently looking for an experienced Software Engineer to join a leading Investment Manager client. This role sits within a core engineering team at the centre of a highly quantitative investment environment, supporting the technology and data platforms that underpin systematic trading strategies a ...

Senior Software Engineer

G MASS are currently looking for an experienced Software Engineer to join a leading Investment Manager client. This role sits within a core engineering team at the centre of a highly quantitative investment environment, supporting the technology and data platforms that underpin systematic trading strategies a ...

Senior Backend Engineer Subscriptions

The Subscriptions mission helps people discover the right Spotify experience for them and supports the entire journey from free to paid. Our teams build products and services that make it easier for listeners around the world to understand the value of Spotify Premium while enabling sustainable growth for ...

Lead Software Development Engineer

Salary: £62,000 - 102,000 per year Requirements Proven experience in technical leadership, including leading a team or cross-functional squad Proven experience working in both backend services and mobile technologies Exceptional programming skills and kno ...

UX Designer (Design Systems) Fire TV/Tablet , Devices and Services Design Team

DescriptionWe're seeking a UX Designer with design systems expertise to support Fire TV and Tablet while also designing B2B workflows, enterprise tools for marketing experiences, and developer tools. This hybrid role combines deep design system knowledge (component building, use case documentation, Human Int ...

Software Engineer Graduates Considered

Software Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Working as part of a world-class ...

Software Engineer Graduates Considered

Job DescriptionSoftware Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Workin ...

Software Engineer Graduates Considered

Job DescriptionSoftware Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Workin ...

Software Engineer Graduates Considered

Job DescriptionSoftware Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Workin ...

Software Engineer Graduates Considered

Software Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Working as part of a world-class ...

Software Engineer Graduates Considered

Job DescriptionSoftware Engineer - Graduates ConsideredA fantastic opportunity for a graduate or experienced Software Engineer to join a highly innovative technology company at the forefront of advanced AI research and development. Workin ...

Senior DevOps Engineer

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Job Reference: CAR/SDE/APR26Salary: Dependent on experienceWorking hours: Full-time (37.5 hours/week)Contract type: PermanentLocation: Hybrid ...

Senior AI Platform Engineer

We’re reinventing payments.In less than four years, Dojo disrupted the market to become the largest and most loved acquirer in the UK. Our payments infrastructure, purpose-built for in-person commerce, is game changing.Now, over 150,000 customers across four countries choose to transact bil ...

Senior AI Platform Engineer

We’re reinventing payments.In less than four years, Dojo disrupted the market to become the largest and most loved acquirer in the UK. Our payments infrastructure, purpose-built for in-person commerce, is game changing.Now, over 150,000 customers across four countries choose to transact bil ...

Solutions Architect Western Europe

About the Role We’re hiring Solution Architects to help the world’s best engineering organizations figure out what AI-native software development actually looks like in production. This is a deeply technical, post-sale role embedded inside Cursor’s most strategic enterprise accounts. You’ll ...

Senior Blockchain Engineer

Overview For blockchain technology to revolutionize the digital economy, we require mass adoption, which can only happen with a drastic improvement in UX. Account abstraction is the path to achieving this, and a modular smart account infrastructure will provide the foundations to go beyond just UX ...

Principal AI Engineering Lead

Responsibilities Own End-to-End AI Engineering Delivery: Design, build, and deploy production‑grade AI/ML systems (LLMs, agents, predictive models) across the full lifecycle, including data ingestion, model integration, evaluation, and ensuring production readiness within a regulated enviro ...

Junior C# Quant Developer Hybrid London (Mentorship & Impact)

Role: Junior C# Quantitative DeveloperClient: Leading Hedge FundCompensation: Competitive Base + Performance BonusLocation: London (Hybrid) Overview <b ...

Principal C# Developer.Net AWS FinTech

Principal C# Developer / Engineer (C# .Net AWS Python) London / WFH to £120kWould you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression?As a Principal C# Developer you ...

Principal C# Developer.Net AWS FinTech

Principal C# Developer / Engineer (C# .Net AWS Python) London / WFH to £120kWould you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression?As a Principal C# Developer you ...

Associate Director Application Security

**About the Role:** **Grade Level (for internal use):** 12The DevSecOps Engineer – CI/CD & Application Security focuses on embedding application security and cloud security controls directly into CI/CD pipelines and developer workflows. This role drives shift‑left security by designing, imp ...

Junior C# Quant Developer Hybrid London (Mentorship & Impact)

Role: Junior C# Quantitative DeveloperClient: Leading Hedge FundCompensation: Competitive Base + Performance BonusLocation: London (Hybrid)OverviewJoin a l ...

Applied Scientist, Agentic AI & Formal Verification

Amazon is looking for an Applied Scientist for the Agentic Automated Reasoning Group in London. This role involves pioneering software verification tools utilizing AI and cloud capabilities. You will collaborate with teams and leverage innovative techniques for code analysis and verification. A Master’ ...

Software Engineer III — Fintech, Cloud Native

JPMorgan Chase & Co. is looking for a Software Engineer III to join their Accelerator team in Greater London. This role involves utilizing domain modeling to develop innovative products and ensuring high standards of software quality and security. The ideal candidate should have a strong foundation in ...

Kotlin Backend Engineer — Payments & Distributed Systems

Katanox is seeking a Software Engineer to enhance backend systems that manage transactions in the hospitality sector. Your role will center on developing secure, high-availability services handling real payments and bookings. Ideal candidates will have strong Kotlin or Java backgrounds, delivery ownership, and a ...

Senior SDET Elevate Quality with Automation (Remote)

BigHand is seeking a Senior SDET to ensure high-quality software solutions by writing robust automated tests and mentoring QA members. You will work closely with the development team to design and implement comprehensive automated testing strategies. The ideal candidate has strong coding skills in C# a ...

Principal Platform Engineer Cloud Native & Reliability

A leading fintech scaleup based in City Of London is looking for a Principal Software Engineer to provide technical leadership while remaining hands-on in a platform team. This role involves architecting multi-region infrastructure services and establishing best practices. The ideal candidate will have strong ba ...

Lead Full Stack Engineer: AI Driven, Secure & Scalable

BNY is seeking Engineers who enhance team impact through leadership and advanced technical skills. You will develop secure and scalable software solutions, utilizing AI to innovate workflows. This role emphasizes delivering robust architectures and fostering team excellence through mentorship. The idea ...

AI Agentic Engineer Deploying Proactive Workflows

Workato is seeking an experienced Forward Deployed Engineer to join their team in Greater London. The role involves designing, developing, and deploying advanced AI solutions, particularly using the Workato platform. Candidates should have a BTech/BE in a relevant field and at least 4 years of experience in AI e ...

Backend Engineer AI‑Driven Recommendations

JD.COM is looking for a Software Engineer - Recommendation to join its technical team at Joybuy in London, UK. The ideal candidate will possess extensive experience with Java and Spring Boot, focusing on developing backend services that enhance customer recommendations through machine learning integration. </ ...

Staff Software Engineer — FinTech Payments Platform

慨正橡扯 is inviting applications for a Staff Software Engineer role located in London. This position plays a crucial role in enhancing our software development and operational practices in a fintech environment. The ideal candidate will demonstrate deep expertise in backend engineering, with proficiency i ...

Senior Linux Engineer Kernel, Clusters & Automation

Oliver Bernard is seeking a Senior Linux Engineer in London to join their Infrastructure team. You will develop software, filesystems, and tools while collaborating with talented professionals. The position includes projects such as creating a bespoke filesystem and automating monitoring systems. Candi ...

Remote Backend Engineer – Gaming Microservices

Climax Studios is seeking a talented fully remote Software Engineer based in the UK or EU. You will collaborate with backend engineers on game development projects, delivering backend services and implementing features to high standards. The successful candidate will have experience in game development ...

Senior Backend Engineer II Europe Expansion Lead

Wise is looking for a Senior Backend Engineer II in Greater London to drive growth and innovation within our Regional Europe & UK team. The role involves developing high-performance tools using Java and Spring Boot, collaborating with cross-functional teams, and mentoring junior engineers. The ideal ca ...

Senior Android Engineer Digital Identity & Fintech Impact

A leading global financial services firm is seeking a Software Engineer III - Android to join their dynamic team in London. This role involves developing customer-centric products, collaborating with cross-functional teams, and ensuring high code quality. Ideal candidates will have a Bachelor's degree in Compute ...

Senior Software Engineer Core Platform (Rust/C++, Python)

Durlston Partners LLP is hiring a Senior Software Engineer in London to design and develop core platforms that enable autonomous systems. You will work alongside exceptional engineers and tackle complex technical challenges in a collaborative culture. The ideal candidate has strong skills in C++, Java, ...

Staff Software Engineer – Global KYC & Onboarding Platform

A global technology company is seeking a Staff Software Engineer to join the Global KYC and Onboarding squad. The role involves creating innovative solutions for a new onboarding platform and mentoring junior engineers. Candidates should possess over 10 years of experience in software engineering, with significa ...

Senior Quant Engineer: Exotic Derivatives & Pricing Engine

Randstad Technologies Recruitment is seeking a Quantitative Engineer to join a premier financial institution in London (Canary Wharf). The role requires 15+ years of experience in designing and implementing pricing and risk models for complex exotic derivatives, with a strong emphasis on Java, C++, and Python ...

Platform Data Engineer – Integration & AI Workflows

Drweng is seeking a Senior Software Engineer for its Platform Data-Integration team in Greater London. You will design and deliver systems that facilitate data discovery within the organization, working closely with Traders and Quantitative Researchers. The ideal candidate has over 8 years of experienc ...

Staff Software Engineer Scale Platform (Fintech)

Airwallex in Greater London is looking for a Senior Software Engineer with over 8 years of experience in Java/Spring Boot. The role involves making critical architectural decisions for a multi-tenant infrastructure, designing technical solutions for enterprise clients, and collaborating cross-functionally. Candi ...

Senior Endpoint DLP Engineer (Kernel/Go/C)

A leading cybersecurity firm based in London is seeking a Senior Software Engineer to develop and enhance the FortiDLP endpoint agent. The role involves implementing new features, maintaining current functionality, and ensuring high coding standards. Candidates should have strong programming skills in languages ...

Senior Quantitative Software Engineer Trading Algorithms

Morgan Stanley is seeking a Senior Quantitative Software Engineer at the Vice President level to join their FIDCOM department in Greater London. This role focuses on developing trading critical technologies, such as market making engines, and enhancing algorithmic trading capabilities. The ideal candid ...

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