senior java developer jobs in London

We are seeking an expert Senior Low-Latency Java Engineer to join our team. Responsibilities Latency Optimization: Profile, analyze, and systematically eliminate long-tail latency spikes across the FX eTrading application pipeline. Zero-GC Engineering: Design, write, and refactor high-throughput core Java code utilizing zero-allocation and low-GC...

Senior Low Latency Java EngineerThis is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology Team. The overall objective of this role is to lead applications systems analysis and programming activities.The role is to provide senior, low-latency systems and...

ResponsibilitiesWe are seeking a Senior Software Developer to join the Elasticsearch Security teamIn this role, you will contribute to the architecture and design of Elasticsearch’s main featuresThese features include authentication, authorization, and tenant isolationYou will work with engineering and product leaders at ElasticYour goal is to participate...

Bullish, Inc. is seeking a Senior Engineer for Trading Product Engineering in London. You will design and deliver low-latency Java code powering the Bullish Exchange, working across a hybrid architecture that blends a Central Limit Order Book with proprietary market making.You will optimize performance, expand automated testing, and collaborate with...

The opportunityOur client is a well-established UK bank serving personal, business and commercial customers. Following a period of major transformation, it has a clear strategy and a significant engineering agenda: modernising core platforms, decoupling services and building first-class digital journeys. They're hiring a Senior Software Engineer to take...

A leading digital archiving organization in London seeks a Lead Developer proficient in Java and Scala to oversee software development in their Digital Preservation team. You will manage systems critical to preserving national digital records and lead innovation within the department. The ideal candidate has experience in Linux and AWS, mentoring abilities,...

Looking for a role with plenty of growth opportunities?Join one of the world's leading IT services, consulting, and business solutions organization. Backed by decades of experience, the company consistently ranks among the top global IT service providers. With an international presence across multiple countries, the company has built a reputation for...

Join the team behind Price Service—a mission-critical HTTP API powering pricing and promotions across all of Tesco’s channels. From tills to websites and everything in between, our work touches the lives of over 28 million UK shoppers every week, with global reach on the horizon. We’re building a robust, internet-facing API that runs both in stores and...

Description An established global financial institution renowned for providing innovative banking, investment, and financial services to millions of customers worldwide. The company undertakes large-scale technology initiatives while prioritizing digital transformation, security, and continuous innovation. Description An established global financial...

Compensation: GBP 87,500 - GBP 111,000 - yearly 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 international payments, Wise is on a mission to make...

Senior Java Engineer – Financial ServicesAre you a strong, hands-on Java Engineer with experience building complex, high-performance systems within Banking or Financial Services?We're hiring on behalf of a leading FinTech consultancy that designs and delivers business-critical technology for some of the world's largest banks and financial...

Senior Low Latency Java EngineerThis is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology Team. The overall objective of this role is to lead applications systems analysis and programming activities.The role is to provide senior, low-latency systems and...

Job DescriptionRole Summary :We are seeking an experienced Java API Developer to join our Digital Asset development team.Interested in this role You can find all the relevant information in the description below.This is a hands‑on engineering role responsible for building and operating secure, resilient API services that power institutional digital asset...

Duration 6 months contract inside IR35, daily rate up to £6002-3 days in office in LondonOur client is one of leading consulting companies. They are looking for Java Full stack developer to work for their end client.Developer will design, develop, and maintain scalable enterprise applications that support critical business functions across the firm. The...

Senior Low Latency Java EngineerThis is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology Team. The overall objective of this role is to lead applications systems analysis and programming activities.The role is to provide senior, low-latency systems and...

Project description As a Senior Full Stack Java Engineer within the US Corporate Loans POD, you will design, develop, and deliver enterprise integration solutions connecting Loan IQ with upstream and downstream platforms. You will leverage modern cloud-native technologies, AI-assisted development tools, and Agentic AI practices to improve software quality,...

Title: Senior Development Manager Contract Type: 12months FTC, 37.5 - Full Time Salary: Starting from £79,500 per annum (London weighted salary) Dependent on Experience Grade 11 Reporting Office: Stratford, London Agile Worker: 20% - 40% of contractual hours to be worked from reporting office/working location (hybrid working) Closing Date:...

Solirius Reply is seeking a Principal Engineer specializing in Java to lead technical teams and drive innovation. This role involves working across the full software lifecycle, engaging with clients, and shaping cutting-edge solutions.Ideal candidates should possess strong leadership skills and substantial experience in Java engineering, advocating for best...

Contract Opportunity | Tier 1 Investment Bank | Canary Wharf Overview Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy...

Senior Java Full Stack EngineerPlease ensure you read the below overview and requirements for this employment opportunity completely.Salary: £60,000 - £70,000 plus benefits, perks, and healthcare options!Job type: Permanent | Hybrid (1-2 days per week) | Occasional travel to client sitesSecurity Clearance: Must be SC eligibleBase locations: London,...