8 senior java developer jobs found

WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach with offices in London, New York, Barcelona, Montreal and Manila, we have a proven track record delivering powerful, elegant and intuitive trading technology solutions. We are expanding our product capability and looking for talented individuals to help build transformational capital markets products including: Aeron - our flagship high-performance messaging infrastructure. Hydra - our developer framework for accelerating the development and delivery of trading systems. Artio - our market-leading...

Senior Java Developer - Outside IR35 - Up to £700 per day A leading organisation in the financial services sector is looking for experienced Senior Java Developers to join its engineering teams, working on bespoke software solutions across complex financial markets environments. This is a hands-on development role, with a strong focus on server-side Java/JVM , working across greenfield and brownfield projects. You'll need to be comfortable working with ambiguity, taking ownership and delivering solutions in a fast-moving environment. The Role Develop server-side Java/JVM applications across financial services and trading environments. Work across the full software development lifecycle, from technical design through to implementation and production. Work with Linux, Kubernetes, event-driven architecture and cloud infrastructure . Collaborate with engineering teams and stakeholders to solve complex technical problems. Take ownership of issues and drive them...

Title: Senior Java Developer Client: Leading Trading Firm Rate: Up to £725 p/d Duration: 6 Month - Rolling Location: London - Hybrid   We are looking for a Java Developer, with strong experience working in the finance sector, to join a leading trading firm based in London.   This role will give you the opportunity to work on Greenfields development projects, focussing on buy side trading platforms, working alongside some of the best developers the sector has to offer!   This is a 6 month rolling contract with very high chance of extension!   Skills/Experience   Strong hands-on/commercial coding experience in Java Strong experience working in the finance sector - experience in crypto or equities trading a big plus Strong Communication skills A personality and genuine passion for technology!   If this sounds like something that may be of interest, then please do not...

A system that has run for over twenty years still underpins core production across dozens of sites worldwide. It's now at end of life, and replacing it is a funded, multi-year programme. You'd own the back-end architecture for the new one. This is business-critical in the literal sense: when the current system goes down, production stops. So the standards you set are load-bearing from week one, and the work shows up where the business actually feels it. It's greenfield in the languages that matter (Kotlin/Java, Spring Boot, PostgreSQL, an event-driven core). The harder problem is the knowledge itself. Two decades of hard-won operational logic sits in the heads of a few domain experts and inside a legacy database nobody wants to touch. A large part of the job is building the migration that lifts that knowledge into a clean, event-driven codebase, one area at a time, without dropping a single transaction in a business that never pauses. A few things that matter:...

📍 Locations: London, Manchester, Leeds, Bristol & Birmingham 💼 Contract | Outside IR35 💰 Up to £450–£525 per day   About the Role   We're looking for an experienced Full Stack Kotlin Developer to join a team delivering secure, scalable, and user-centred digital solutions across major UK public sector programmes. You'll work with modern technologies on large-scale digital transformation projects, contributing to technical delivery and helping shape best practices across the development team. Key Skills   Kotlin, Java & Spring Boot Full Stack development Microservices & REST APIs AWS, Azure or GCP Docker, Kubernetes & Terraform CI/CD pipelines and DevOps Agile delivery Technical leadership and mentoring   Essential Experience Proven commercial experience as a Full Stack Kotlin Developer Strong Kotlin, Java and Spring Boot experience Experience...

Android Developer (Contract) Six months, outside IR35, immediate start. Four days remote, one day per week in Manchester. This is a chance to work on a mobile app used at national scale, inside a public sector organisation that takes engineering seriously. You'll be joining a modern setup with automated testing, ephemeral branch deployments and performance testing in AWS CodeBuild. If you like clean architecture and proper test coverage, this is the kind of environment where that work is valued rather than skipped. Mostly remote, one day a week in Manchester, and a clear six-month runway to get your teeth into. We have two of these roles to fill. What you'll be doing: You'll help integrate internal government services into a high-traffic mobile app, building features end to end and holding a high bar on testing and quality as you go. What you'll need: Essential Strong Kotlin Jetpack Compose MVVM and Clean Architecture Automated...

Android Developer (Contract) Six months, outside IR35, immediate start. Four days remote, one day per week in Manchester. This is a chance to work on a mobile app used at national scale, inside a public sector organisation that takes engineering seriously. You'll be joining a modern setup with automated testing, ephemeral branch deployments and performance testing in AWS CodeBuild. If you like clean architecture and proper test coverage, this is the kind of environment where that work is valued rather than skipped. Mostly remote, one day a week in Manchester, and a clear six-month runway to get your teeth into. We have two of these roles to fill. What you'll be doing: You'll help integrate internal government services into a high-traffic mobile app, building features end to end and holding a high bar on testing and quality as you go. What you'll need: Essential Strong Kotlin Jetpack Compose MVVM and Clean Architecture Automated testing...

Full Stack Kotlin Developer - Contract ?? Locations: London, Manchester, Leeds, Bristol & Birmingham ?? Contract | Outside IR35 ?? Up to £450-£525 per day About the Role We're looking for an experienced Full Stack Kotlin Developer to join a team delivering secure, scalable, and user-centred digital solutions across major UK public sector programmes. You'll work with modern technologies on large-scale digital transformation projects, contributing to technical delivery and helping shape best practices across the development team. Key Skills Kotlin, Java & Spring Boot Full Stack development Microservices & REST APIs AWS, Azure or GCP Docker, Kubernetes & Terraform CI/CD pipelines and DevOps Agile delivery Technical leadership and mentoring Essential Experience Proven commercial experience as a Full Stack Kotlin Developer Strong Kotlin, Java and Spring Boot experience Experience working with cloud-native technologies Previous Public...