java software developer jobs in Windsor, Berkshire

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...

Do you have 1 - 3 years commercial experience developing software with Java? Looking to join a company when you can make a real impact? 🚀 Java Software Developer – SaaS Solutions 🚀 💲 Salary – up to £55k + bonus 📍 Location – hybrid working 2 days a week in modern London office We have a fantastic brand-new opportunity for a Java Software Developer to join a fast-growing London-based...

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,...

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...

Our client, a major Quantitative Hedge fund, is looking to hire a skilled Java Software Engineer to help build out the firm's trading systems and tooling. This role allows you to join one of the world's most successful hedge funds, collaborate with an exceptionally talented team operating in a hybrid approach, and earn market-leading compensation packages. Responsibilities: - Help build out...

Travelfusion is the world's largest travel B2B content aggregator for LCCs (Low Cost Carriers) and FSCs (Full Service Carriers) processing hundreds of millions of daily transactions with tens of thousands of daily flight bookings. Travelfusion’s platform powers the world’s leading online leisure and business travel agencies, as well as the meta search and travel ecommerce sites. The business...

You will work on designing, developing, and maintaining enterprise-level applications that support our digital platforms and customer-facing services. Key Responsibilities: - Design, develop, and maintain high-quality Java applications and microservices. - Collaborate with cross-functional teams including product, UX, and QA to deliver innovative solutions.

Role: Senior Java Software Engineer (Back-end) Salary: £85,000–£100,000 + equity + bens Location: UK Remote Sector: FinTech Start-Up About the Company Wedo are collaborating with a FinTech start-up. The founders have an unrivalled track-record of scaling successful businesses, largely across the FinTech sector. This product, focusing on Wealth Management, is set to disrupt the sector and is...

Principal Java Developer – Fully Remote The Opportunity Ocho is partnering with a fast-growing, product-led fintech that’s building out a brand-new Development Centre from the ground up to deliver an innovative Greenfield payments platform. As a Principal Java Developer, you’ll be hands-on in designing and developing backend, service, and portal systems that power secure, scalable payment...

Java Software Engineer We’re looking for a Junior Java Engineer to join our Fintech clients growing development team. This is a fantastic opportunity to work alongside experienced engineers, quants, and traders — designing and building high-performance systems that directly impact our trading strategies. What You’ll Do - Develop, test, and maintain Java applications that power our trading...

We’re working with a leading, technology-driven trading organisation with a global presence, seeking a Senior Software Engineer to join their innovative platform engineering team. This is an exceptional opportunity to work on cutting-edge systems that process data at scale, powering decision-making in fast-moving global markets. Our client is a diversified principal trading firm operating across...

Fimatix are a leading Agile Software Delivery Consultancy and we specialise in both Financial Services and working for HM Government clients. We are seeking a talented and motivated Java & Go Developer to help scale and evolve a modern, cloud-native platform built on AWS and Kubernetes (EKS) for one of our HM Gov clients. Key Responsibilities · Design, develop, test, and deploy robust and...

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities - Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. - Write clean, efficient Java...

You will also have access to shares! Salaries in the range of £100k - £140k and sign on bonus. If you’re excited by the challenge of building resilient systems for real-world financial use cases and want to work with a team that values clarity, autonomy, and purpose. we’d love to hear from you.

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 Developers – 3 positions available We’re looking for three experienced Java developers to play a key role in delivering long-term projects and supporting the growth of the wider engineering team. A rapidly growing healthtech scale-up is transforming how hospitals deliver care across the UK — and they're now expanding their development team at pace. In just a few short years,...

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...

You will mentor a small team of 3 talented developers while remaining hands-on with coding and solution design. You’ll help define how software is built, scale systems, and influence the technical direction of a globally used SaaS product. You’ll be supported by a collaborative leadership team that values technical excellence, autonomy, and personal growth.

You will be an excellent fit for this Core Java Engineer position if you: - Have built scalable software from scratch - Use Core Java concepts, including Low Latency, Concurrent Programming & Multithreading - Are used to working in a fast-paced environment - Work in the financial industry e.g. Bank, Hedge Fund/Asset Management, FinTech

Job Title: Java Software Engineer Client: Elite Systematic Trading Firm Salary: Up to £175,000 Base (+ Bonus) Location: London/Hybrid The role: My client is looking for an experienced Java Software Engineer to join their rapidly expanding technology team. This team is responsible for building out a bespoke, greenfield data platform that you will be crucial in developing. Our client prides...