core java developer jobs in Watford, Hertfordshire

Java Developer – Product Engineering £60,000 – £90,000 | Remote-first (monthly meet-up in Midlands office) We're working with a fast-growing software company that's transforming how businesses manage complex financial workflows. Their AI-first platform helps customers simplify operations, increase transparency, and make smarter decisions — and they're scaling quickly as demand grows. They're...

Senior Java EFX Platform Developer Location: Fully Remote (UK-based) Contract: 12 Months (likely extension) Industry: Investment Banking / FX E-Trading The Opportunity We're partnering with a leading investment bank on a major greenfield build - a brand-new, in-house FX E-Trading platform. This multi-year programme is at an early stage, offering the chance to help shape architecture,...

About Apexon: Apexon brings together distinct core competencies – in AI, analytics, app development, cloud, commerce, CX, data, DevOps, IoT, mobile, quality engineering and UX, and our deep expertise in BFSI, healthcare, and life sciences – to help businesses capitalize on the unlimited opportunities digital offers. Our reputation is built on a comprehensive suite of engineering services, a...

Senior Java Software Engineer Watford/Hybrid Salary - £70,000 - £80,000 + Excellent benefits We're looking for a talented Senior Java Engineer with a passion for clean code, elegant architecture, and efficient delivery. This is a hands-on role focused on developing a cloud-native platform and its foundational services—mission-critical components that support a modern workforce management...

Senior Software Developer - Java / Python with Delphi We're looking for an experienced Software Engineer (Java/Python) to join a high-profile government project focused on modernising and integrating complex systems within a secure environment. You'll work across backend development, integration and automation – with occasional support for legacy Delphi components as part of wider platform...

My client is a global leading Digital Consultancy specialising in Cloud Adoption, Digital Architecture/Transformation & NextGen AI Solutions, with offices in London, Manchester, Newcastle and Glasgow, providing flexi working model (option of remote or hybrid with ad hoc client site travel). They are looking for two Java Full Stack Engineer's (Jnr-Mid level) to join a rapidly growing team,...

You will work closely with developers and QA engineers to ensure seamless automation, rapid feedback cycles, and high-quality software delivery. Key Responsibilities - Maintain and administer TeamCity servers and clients. - Design, configure, and maintain TeamCity build projects.

You will need to be a proactive individual who will relish the opportunity to work in a growing and evolving environment – a real opportunity to make an impact and grow your career. This is an excellent and rare opportunity to be exposed to the latest technologies and diverse industry and environment applications, please apply as soon as possible to arrange an initial and informal conversation,

Full Stack Engineer / Developer (C# .Net Core JavaScript AWS) St Albans / WFH to £100k Opportunity to progress your career in a hands-on role at a technology driven trading company that invest in Sports betting markets, with a flat structure where you will get your voice heard and can make a real impact on the bottom line, earning significant bonuses. What's in it for you: As a Full Stack...

Join Our ScriptRunner Platform Team as a Senior Software Engineer! Are you passionate about developing innovative solutions that enhance user experiences for millions? Do you have a knack for leading and mentoring teams to success? If so, ScriptRunner is looking for a dynamic Senior Software Engineer to join our talented ScriptRunner Cloud team. About us: ScriptRunner is committed to...

Senior Java Software Engineer Remote UK | Global Fintech | Merchant-First Payments Ecosystem A high-growth global fintech, renowned for delivering world-class payments-related software and technology, is looking to expand its engineering team. As the company continues to scale its platform to meet growing demand, they're seeking experienced engineers to join their collaborative, outcome-driven...

About the role We have an exciting opportunity for a Java Engineer to join the elementsuite team, with a passion for clean code, elegant architecture, and efficient delivery. This is a hands-on role where you'll be developing the elementsuite platform and its foundational services - all mission-critical components that underpin our software stack. You'll be working with Java (and Rust where...

Java Developer – High-Performance Trading Systems - Fully Remote - up to £100k base About the Company We're a fast-growing proprietary trading firm operating across multiple global cryptocurrency exchanges. Founded by a team with deep experience in financial markets and algorithmic trading, we've already achieved top-tier market-maker status, handling trading volumes exceeding $100M per month —...

Senior Java Developer required for a well-funded and ambitious tech business entering its next scale-up phase. This is a fully remote position paying up to £65K + benefits, with meaningful technical ownership, visibility, and genuine opportunity to grow into Tech Lead as the team expands. This is a CTO whose serverless architecture has previously been recognised by AWS; driving proven,...

Java Developer – Contract – Remote – £500/pd Outside IR35 – 6 months (likely 12 months) I'm working with a consultancy who are looking to hire a Java Developer (SC Cleared) on a contract basis for an initial 6-month assignment, expected to extend to 12 months. The role is fully remote, supporting a major central government project. Skills required: - Strong Java and Spring Boot development...

Do you enjoy building real-world software that gets shipped — then sticking around to make sure it actually works? Do you get satisfaction from solving production issues just as much as writing shiny new features? Looking for a role that's Java through and through, with a supportive team and proper engineering standards? We're working with one of our favourite clients, a software specialist...

Technical Architect (AWS Java) Remote UK to £100k Are you a hands-on Technical Architect with strong Java coding skills and experience architecting and operating large scale systems on AWS? You could be progressing your career as a Technical Architect at a growing tech company that provide a range of IoT and Data solutions for the Emergency Services. As the Technical Architect you'll take...

My client is a global leading Digital Consultancy specialising in Cloud Adoption, Digital Architecture/Transformation & NextGen AI Solutions, with offices in London, Manchester, Newcastle and Glasgow, providing flexi working model (option of remote or hybrid with ad hoc client site travel). They are looking for a Senior Java Full Stack Engineer's (Jnr-Mid level) to join a rapidly growing team,...

A leading FinTech innovator is shaping the future of financial markets - across traditional finance and crypto - with cutting-edge trade surveillance technology. Their mission is to protect investors, enhance transparency, and ensure compliance in some of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single...

Full Stack Engineer – Java | Digital Transformation Projects | Location: Hybrid Remote (occasional ad-hoc travel to client offices dependant on where you are based. London/Glasgow/Newcastle/Manchester.) Type: Permanent | Full-Time Sector: Digital Consultancy / Public Sector / Private Sector Budget: £55,000 + benefits Are you a passionate Full Stack Engineer looking to apply your skills in...