backend java developer jobs in City of London

Job Description Junior Java Developer – RFQ Trading Systems 📍 London (Hybrid) 3 - Days in Office 💰 Up to £75,000 + bonus We’re hiring a Junior Java Developer (1–4 years) to work on a greenfield RFQ platform supporting a trading desk. This is a backend role, close to the front office, where the services you build are used live by sales and traders. You’ll get strong exposure to event-driven...

Job Description Job Title: Java Developer Location: UK Experience: 2–5 years Education: Bachelors in Science (IT/Computer Science/Engineer) Employment Type: Full-Time UK based candidates only. Job Summary: We are seeking an experienced Java Developer with 2 to 3 years of hands-on experience in building applications using Java, Spring Boot, and Microservices architecture. The ideal...

Job Description Lead Software Engineer (Java) – London / Hybrid Are you a Lead Backend Engineer with a strong background in Java and modern backend architecture? In this senior technical leadership role, you will set the technical vision, influence system design, and guide teams in delivering secure, scalable, and high-performing services. While remaining hands-on for key projects, you will...

I am partnering with an early-stage UK tech startup focused on using data and AI to optimise and accelerate the design of clinical trails. Senior Back-End Engineer – Founding Team (London, Full-Time) Role: Senior Back-End Engineer – Founding Team Location: London, UK (on-site/hybrid) Type: Full-time, Senior Level I am seeking a highly experienced Senior Back-End Engineer to join a fast-growing,...

Java Developer | London/Hybrid | £100,000 - £140,000 | Java 21 | Microservices | TDD | AWS | PostgreSQL | Kubernetes | Fintech | Digital Banking Looking to join a company who are making waves within the fintech space? Want to work with the latest Java technology? I am supporting a rapidly growing fintech scaleup who are PE backed by the same investors who backed the likes of Coinbase and Airbnb....

Job Description Job Title: Java Developer (OMS Specialist) Location: London (Hybrid Working) Working Pattern: 2–3 days onsite per week Employment Type: Permanent Overview A London-based financial technology organisation is seeking an experienced Java Developer to join its engineering team. The successful candidate will play a key role in the design, development, and enhancement of a...

Job Description Senior Backend Developer – Node.js, TypeScript, Kafka - up to £70k Leading E-commerce Brand | Up to £70,000 | Hybrid (2 days/week in London) We’re partnering with a leading e-commerce business that’s scaling a modern, event-driven platform to support high transaction volumes and continued growth. They’re looking for a Senior Backend Developer to join a highly capable...

You will work closely with traders, quants, financial engineers, and technology partners, contributing directly to the performance, resilience, and evolution of a mission-critical e-trading platform. What You’ll Be Doing - Design, build, and enhance a robust, ultra-low latency Fixed Income electronic trading platform

Job Description 3 days Onsite per week from London Office. Required skills and qualifications: Extensive experience in kdb+/q, including the design of large kdb+ systems. Strong understanding of computer science fundamentals and modern software development practices. Experience with development in a Unix and/or Linux environment. Core Java development experience is often...

Java Back-End Developer (Azure / AWS) – Contract | London (Hybrid) Contract: 12+ months Location: London (Hybrid – 3 days onsite) We are supporting a consultancy delivering enterprise-scale technology programmes for a major client. They are seeking an experienced Java Back-End Developer with strong cloud (Azure/AWS) expertise to join a long-term engagement working on modern, microservices-based...

Company Overview: A global financial institution with a strong presence in major markets, recognised for its expertise in investment banking and asset management. The firm is known for its innovative approach to trading and technology, delivering solutions that enable efficient execution and risk management across multiple asset classes. It offers a collaborative environment where professionals...

You will be working with the front office at all levels to ensure that the requirements, design and build are conducted accurately and efficiently. The most important responsibility, however is applying your etrading platform experience to a high quality development environment.

Benefits ~9% pension contribution ~ Stock Options ~ Health Insurance etc This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company ~$120m VC-backed Scale-Up ~ One of the fastest-growing companies in the world ~ 'Fast Company' Most...

Senior Software Engineer Location: London (x3 days a week onsite) Salary: Up to £80k DOE Type: Perm Job Description We are looking for a passionate Senior Java Engineer in London to lead the design and development of core product features and services that power an app used by thousands of travellers on a daily basis. As a Senior Java Engineer for an loyalty program team, you will have the...

Job Description Java Developer | London/Hybrid | £100,000 - £140,000 | Java 21 | Microservices | TDD | AWS | PostgreSQL | Kubernetes | Fintech | Digital Banking Looking to join a company who are making waves within the fintech space? Want to work with the latest Java technology? I am supporting a rapidly growing fintech scaleup who are PE backed by the same investors who backed the likes of...

You will be working with the front office at all levels to ensure that the requirements, design and build are conducted accurately and efficiently. The most important responsibility, however is applying your etrading platform experience to a high quality development environment.

Lead Backend Developer – Node.js, TypeScript, Kafka - up to £80k Leading E-commerce Brand | Up to £80,000 | Hybrid (2 days/week in London) A leading e-commerce client is looking for a Lead Backend Developer to help shape the technical direction of a highly scalable, event-driven platform. This role combines hands-on development with technical leadership, working in a Node.js, TypeScript and...

Lead Software Engineer (Java) – London / Hybrid Are you a Lead Backend Engineer with a strong background in Java and modern backend architecture? While remaining hands-on for key projects, you will focus on mentoring others, driving engineering excellence, and ensuring the backend strategy aligns with business goals. Establish and uphold coding standards and secure development practices. Guide...

3 days Onsite per week from London Office. Required skills and qualifications: Extensive experience in kdb+/q, including the design of large kdb+ systems. Strong understanding of computer science fundamentals and modern software development practices. Experience with development in a Unix and/or Linux environment. Core Java development experience is often required. Experience with low-latency...

Senior Backend Developer – Node.js, TypeScript, Kafka - up to £70k Leading E-commerce Brand | Up to £70,000 | Hybrid (2 days/week in London) They’re looking for a Senior Backend Developer to join a highly capable engineering team working with Node.js, TypeScript and Kafka. This is a hands-on role where you’ll be building and evolving distributed backend services in a fast-paced, product-focused...