senior software engineer- java jobs in London

Arrows is hiring experienced Java Engineers for a major technology programme with one of the UK's leading broadcast and media organisations. You’ll join a high-performing engineering team building and scaling event-driven, cloud-native services, working with modern technologies including Java, Kafka, Kubernetes and Docker.You’ll be hands-on across the...

Pontoon is hiring a Senior Full Stack Developer (Front End - Java / Angular / Solidity) for a London-based engineering team. This 12-month contract role is onsite five days a week, offering a salary of £50,000–£80,000 per year plus competitive terms.You will design and build scalable enterprise applications, deliver secure backend services in Java/Spring...

JPMorganChase is seeking a Software Engineer III in London to own end-to-end delivery of secure, full stack features. You will design, implement, and operate services built on microservices, Kafka, and CI/CD pipelines, while driving performance, resiliency, and secure coding practices across production systems.Expect collaboration across teams, design...

Job ID: Posted: Location: London, England, United Kingdom Category: Technology Company: Citi About the Team The Enterprise AI Products team is a small, high-impact global team within the Citi COO/CTO organisation, dedicated to building innovative AI solutions for the wider bank.We are at the forefront of Generative AI, delivering capabilities that...

Contract: Contract Location: London, Waterloo Pay: Competitive Consultant: Joe Moore Exciting opportunity for a Senior C++ Software Engineer to join this Global Commodities Trading Company. This is an exciting time to be joining this world-leading company with this role working in one of the company’s premier software development projects contributing...

Company Description We’re Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day. We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers. Whether you want to book a...

Full-timeCompensation: GBP 111,000 - GBP 145,000 - yearlyCompany DescriptionWise 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 international payments, Wise is on a mission...

Senior Staff Software Engineer, Time EngineeringGusto 08 August 2025Join Gusto as a Senior Staff Software Engineer (Backend) on the Time engineering team and help shape the future of time management for businesses. You'll design, build, and scale high-performance APIs that power time tracking and payroll integrations, impacting millions of...

Adaptive is a financial consulting firm delivering front-office technology solutions for capital markets. We work with leading banks, asset managers, fintechs and service providers globally, including offices in London and New York, delivering trading platform capabilities.You will join a highly skilled team tackling technically challenging projects,...

At Signal AI, we use cutting-edge AI technology to offer clarity on decisions that shape businesses and society. We value restless curiosity, creative thinking, and diverse perspectives as we strive to become AI-native. We believe that AI is a collaborator, not just a tool, and we invite passionate individuals to join us on our journey as we continue to...

London | Hybrid | Tier 1 Investment BankThe OpportunityWe are partnering with a Tier 1 investment bank on a major, multi-year Equity Accelerator programme focused on modernising its Prime Finance Equities platform. The programme is re-engineering core trading and post-trade systems, introducing new data and market-expansion platforms, and enabling advanced...

Smart Communications is a leading customer engagement technology provider for regulated industries. We are seeking an experienced full stack developer to extend our long‑lived enterprise product, from the Java back end to the browser, with a focus on clean, well-tested code.You will join an Agile team, own features end-to-end, and contribute to automated...

Citi London is seeking a Senior Blockchain Engineer to join the Digital Assets Platform. You will contribute to the Citi Integrated Digital Assets Platform (CIDAP), building enterprise-grade web applications with a strong Java backend and Web3 integration.The role requires hands-on development, collaboration across teams, and a proactive, startup-minded...

JPMorganChase's Accelerator team is seeking a Senior Lead Software Engineer to drive high-impact fintech products and empower teams to ship quickly.You will design scalable JVM-based systems, emphasize testability, resilience, and secure code, and collaborate across squads to turn ideas into customer-facing solutions.The role values curiosity, collaboration,...

TEKsystems is seeking a Senior Data Engineer with substantial Java development experience to join a fully remote team in the UK. The role involves developing data pipelines and services, working in an Azure cloud environment, and ensuring data reliability and scalability. Candidates should possess expertise in data engineering, SQL, and modern engineering...

Remotestar, a leading fintech company in London, is seeking an experienced backend developer with expertise in Java and Spring/Spring Boot. The ideal candidate will have over 8 years of backend development experience, strong knowledge of MongoDB, RESTful services, and effective team leadership capabilities.This hybrid position requires candidates to work 2-3...

Job Description:Job Title Senior Java Engineer – Fixed Income Pricing and AnalyticsLocation LondonCorporate Title Vice President You will play a key role in transforming the Rates and Credit Fixed Income technology landscape. As part of a multi-year modernisation programme, you'll help build a next-generation pricing and analytics platform. Traders will...

About Our Client Our client builds the commercial intelligence layer for bio-pharma go-to-market teams: a single source of truth for healthcare markets, spanning millions of clinician profiles, billions of prescription and procedure claims, institutional data on tens of thousands of hospitals and health systems, and fair market value benchmarking for...

About ExTrac ExTrac is a decision intelligence company used by governments, defence organisations, financial institutions, and corporates operating in complex, fast-moving environments. Our capabilities fuse curated data sources, domain-specific AI, and deep human expertise to transform information overload into clear, actionable foresight. Our ambition is...

About Us Fanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet....