Java Programmer jobs in Hertfordshire

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,...

You will work closely with Programme Managers, Solution Architects, and senior customer stakeholders to shape solution direction, make key technical decisions, and establish technical standards across multiple disciplines. Responsibilities Own the overall technical vision and end-to-end solution architecture for one or more major programmes.

Job Description Job Title: Senior Full Stack Systems Developer (Environment) Ref. No.: CJD301025H Location: Based near Watford Salary: £80,000 - £85,000 This is a wonderful opportunity to join my client, a trusted, environmentally-minded Technology Company, renowned for lending their expertise to providing monitoring systems to the environmental sector. They are proactively seeking an...

Job Description Stevenage Software Engineering Level 6 Degree Apprenticeship 2026 Salary: £18,750 plus a £3000 joining bonus Work Location: MBDA Stevenage or Bristol or Bolton Learning Provider Location: CranfieldMK:U in Milton Keynes (for Stevenage), University College Weston -Winter Gardens (for Bristol) & Manchester Metropolitan University (for Bolton) Security clearance: British Citizen...

You must be eligible to obtain SC (Security Check) clearance - this requires 5 years' continuous UK residency prior to application.

Principal Software Engineer Cloud Engineering Scale-up c£100k North Scout are partnered with a fast-growing cloud engineering business that’s doubled revenues, expanded its technical team, and earned a strong reputation for delivering complex cloud programmes with pace and precision. They’re looking for a Principal Software Engineer to take a leading role across architecture, design and...

Areti Group is working exclusively with a flagship UK programme and we’re building out a full spectrum team of Palantir specialists to deliver on one of the country’s most ambitious, mission-driven tech initiatives. We are urgently hiring across multiple roles, including: - 🔧 Palantir Software Engineers - 📊 Data Engineers & Analysts (Foundry/Gotham) - 🧠 AI & Machine Learning Specialists - 🏗️...

Role: Senior Fullstack Developer Start Date: ASAP Contract Length: 12 Months (extensions possible) Work Location: Remote, Occasional Paid Travel to UK Office IR35 Status: Inside IR35 Security Clearance: DV Cleared Joining a critical public sector programme, you’ll play a key role in ensuring service resilience, stability, and compliance, while contributing to new feature development. This...

You will be supporting both ESA and UK National missions such as the earth observation spacecraft, Forum or the Lisa series of three spacecraft that will measure gravitational waves in deep space!

You will work in a collaborative team environment, both locally and with transnational colleagues, focused on developing innovative test solutions and driving future innovation.

You will work closely with infrastructure, development, and third-party providers to ensure robust, secure, and scalable systems are delivered and maintained. Key Responsibilities Environment Creation & Management - Create and configure new test/live environments using Xen Orchestra VM templates.

Role: Senior Fullstack Developer Start Date: ASAP Contract Length: 12 Months (extensions possible) Work Location: Remote, Occasional Paid Travel to UK Office IR35 Status: Inside IR35 Security Clearance: DV Cleared Joining a critical public sector programme, you’ll play a key role in ensuring service resilience, stability, and compliance, while contributing to new feature development. This...

Job Description Senior Full Stack Systems Developer Reference: BY128941 Hemel Hempstead £75,000 - £85,000 Join a pioneering organisation at the forefront of environmental technology. For over ten years, this company has been transforming how the UK monitors and understands environmental change, building integrated, data-driven ecosystems that deliver real-time insights. As they continue to...

Job Description Scope Akkodis is establishing a pioneering IT & Digital Centre of Excellence (CoE), designed to drive transformative technology programmes across the UK. This dynamic new team will play a key role in delivering large-scale digital, cloud, software, and infrastructure projects, supporting both public and private sector clients. By leveraging cutting-edge technology, strategic...

You must be eligible to obtain SC (Security Check) clearance - this requires 5 years' continuous UK residency prior to application.

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,...

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,...

Job Description Job Title: Senior Full Stack Systems Developer (Environment) Ref. No.: CJD131125A Location: St. Albans Salary: £80,000 - £85,000 This is a fantastic opportunity to join my client, an industry-leading, eco-conscious Technology Company renowned for lending their expertise to providing monitoring systems to the environmental sector. They are on the lookout for a talented,...

Job Description Job Title: Senior Full Stack Systems Developer (Environment) Ref. No.: CJD301025C Location: St. Albans Salary: £80,000 - £85,000 This is an incredible opportunity to join my client, a highly-respected, eco-savvy Technology Company, renowned for lending their expertise to providing monitoring systems to the environmental sector. They are currently searching for a talented,...

Job Description Job Title: Senior Full Stack Systems Developer (Environment) Ref. No.: CJD301025B Location: Based near Hemel Hempstead Salary: £80,000 - £85,000 This is a rare opportunity to join my client, a highly-regarded, green-minded Technology Company renowned for lending their expertise to providing monitoring systems to the environmental sector. They are on the lookout for a driven,...

Job Title: Senior Full Stack Systems Developer (Environment) Ref. No.: CJD(phone number removed)H Location: Based near Watford Salary: 80,000 - 85,000 This is a wonderful opportunity to join my client, a trusted, environmentally-minded Technology Company, renowned for lending their expertise to providing monitoring systems to the environmental sector. They are proactively seeking an...