Lead Java Developer jobs in High Wycombe

You must be eligible for UK Security Clearance (SC)(UK residency required - background checks will apply)Salary£55,000 - £75,000, depending on experiencePlus a competitive benefits packageRSG Plc is acting as an Employment Agency in relation to this vacancy.

You will work across cutting‑edge platforms including Payment Networks, Digital Banking, Emerging Payments, and highly scalable data and analytics environments built on Google Cloud Platform, Data Lakes and Power BI. This role involves modern engineering, integration, testing, and hands‑on development within a high‑impact digital landscape.

Lead Developer London - Hybrid 1/2 days in office £85,000 - £100,000 About Simmer We’re Simmer Eats, one of Europe’s fastest-growing food brands. We’ve grown 10x in the last year, and we’re building the next phase of scale on a modern commerce and technology stack. Our mission is simple: make healthy eating effortless. High-protein, great-tasting meals delivered straight to customers’ doors,...

Tech Lead London Hybrid £100,000-£130,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for a hands-on Tech Lead with strong...

You will oversee 2–3 backend squads, shaping long-term microservices architecture using Java 21 and AWS. This role balances strategic technical leadership with hands-on mentorship to drive engineering excellence, security, and scalable system design. Why this role is remarkable:

Job Description About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through...

Job Description Role: Lead Test Engineer Contract Length: 12 Months Location: Hybrid – 3 days per week in office (except London). So Birmingham, Blackpool, Leeds, Manchester or Newcastle Must haves: - Significant experience leading and testing micro services - Functional and non functional testing - Hands on experience in automation testing Leadership skills - Experience leading...

You will be working with a modern microservices tech stack, using Go / Golang. There are challenges around scalability and robustness, you'll be continually learning and progressing your career within a supportive Agile team environment.

You must speak, write and be able to understand fluent English. - Deep knowledge and regular usage of Firebase suite, especially Firestore. - Strong proficiency in TypeScript and modern JavaScript (ES6+).

You must enjoy constantly learning and researching to improve your level of expertise.

Role: Senior Mobile Applications Developer Clearance: SC required Location: Hybrid - up to 2 days onsite in High Wycombe (as required) Working Pattern: Full-time IR35: Inside IR35 Start Date: ASAP Contract End Date: 27 February 2026 Role Overview: We are looking for an experienced Senior Mobile Applications Developer to support the ongoing development of existing mobile applications. The role...

React Native Developer (Tech for Good) (Social Education Learning) Remote Work 3-month Voluntary Work Experience Opportunity London Are you a React Native developer with mobile app experience, and a desire to put your skills toward positive social impact? Want hands-on experience designing and building intuitive mobile interfaces for learners around the world? If yes, this could be the...

Our client is a fast-growing SaaS company building web and mobile products used worldwide for organising, engagement, and field operations. They’re small, sharp, and engineering-led — shipping fast, solving real problems, and working in a genuinely collaborative environment. They’re now adding a fourth A-player Full-Stack Developer to their tight 3-person engineering team. If you want real...

Role: Android DeveloperType: Contract (3 Months) Location: Stokenchurch, UK Working Model: Hybrid (1/2 days per week in office) Payrate: £260 - £281 per day on PAYE £350 - £372.60 per day INSIDE IR35 Umbrella The Role: We are looking for a Subject Matter Expert in Android Development to lead a custom software engineering project. This is a high-impact role combining deep technical execution with...

Job Description Overview We are seeking an experienced Software Technical Lead to provide hands-on technical leadership within an automation and intralogistics environment. This role is ideal for a senior engineer who actively writes and reviews code, has managed and supported other developers, and can lead the technical delivery of complex software solutions, including Warehouse Management...

Job Description A fantastic opportunity has arisen for a Systems Engineering Lead to join a specialist Systems Engineering function supporting complex, multi-national defence programmes. This role performs the duties of a senior technical lead position and works closely with programme leadership and engineering stakeholders across the wider organisation. Key Responsibilities: - Promote,...

Job Description Role: Principal Electrical Engineer Location: Devonport(Hybrid role requiring onsite presence 2 days/month) Duration: 2 years Inside IR35: Umbrella About our Client: Our client in Devonport is a leading engineering and maritime organisation specialising in the maintenance, repair, and overhaul of naval vessels. The site operates with a skilled workforce across mechanical,...

Job Description Market Design Lead – Switching & Registration Who Are RECCo? We are an independent, non-profit organisation responsible for the Retail Energy Code — a key part of how the GB retail energy market is regulated. But we don’t just manage rules. We look ahead, not just react, helping the market change in the right way. We deliver secure digital services, clear governance, and...

Premier Recruitment Group has the privilege to recruit on behalf of our very prestigious client based in London (Coverage Southern England - London, Kent, East Sussex, Surrey, Berkshire ) . We are recruiting for experienced and forward thinking Quality Improvement Lead. This is full time and permanent position and working for very well established care company working in the field mental...

Job Description Head/Lead Mechanical Engineer - London - Tech Innovation We're partnered with one of the most innovative tech communications organisations in London, who rarely hire at this senior level. They are expanding globally and are looking to bring in an elite Head/Lead Mechanical Engineer to take full ownership and authority of their designs from concept through to delivery. This is a...

We are looking for aCustomer Service Team Leader to lead and develop a fast growing customer service team. This is an excellent opportunity for a strong people manager with a background inretail management andexcellent Excel and IT skills to progress their career within a growing company. The Role As Customer Service Team Leader you will be responsible for heading up a customer service team...