Lead Java Developer jobs in Cardiff

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,...

Our client is a mission-led consultancy delivering secure, modern software solutions that support the UK Government and Defence sector. They’re growing fast and looking for talented Java Developers who want to make an impact on projects that matter. You’ll work in a high-trust, agile environment, building scalable systems and progressive applications that directly contribute to national security...

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 the increasingly...

Job SummaryAviation. It connects our world, brings people together, provides opportunities, accelerates economic growth, and is just so very cool! Come work for NAVBLUE, a leading services company owned by Airbus, dedicated to Flight Operations, Air Traffic Management solutions and services for airlines, airports, and Air Navigation Service Providers. We combine aircraft manufacturer expertise,...

You will collaborate closely with cross-functional teams, including product management and UX/UI, to ensure that our software solutions meet business and customer needs.

You will be responsible for driving culture through your craft and be keen to take on line management responsibilities.

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...

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.

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...

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...

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.

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:

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 microservices...

Role Overview: The Head of Business Development / Commercial / B2B is a senior leadership role responsible for identifying, driving, and executing strategic business development initiatives across multiple sectors, including Prisons, Care Homes, Outpatient Dispensing, and new private services. The role will focus on leveraging the scale and central capabilities of the organization to maximize...

Position Sales Development Executive (SDR) Cybersecurity UK Remote, with regular travel to Surrey About us Talanos Cybersecurity is a values led Managed Security Service Provider trusted by organisations to help defend against modern cyber threats. Our core offering is Managed Detection and Response, delivered through our in‑house Security Operations Centre operating 24/7 across the UK, South...

We are seeking a highly motivated and results-driven B2B SaaS Sales Executive to join our fast-growing team at Keepme in the UK. As one of the fastest-growing companies in the sector, we offer a unique opportunity to be part of a dynamic and innovative team. Our AI-powered solution is revolutionizing the way Health and Fitness Operators manage their businesses, and we have a growing, highly...

Business Development Director – EU Military Partnerships Osiris Inc. - Location: Remote (EU-based, with travel to various EU countries) - Reports to: CEO - Compensation: commensurate with experience/qualifications About Osiris Inc. Osiris Inc., founded in 2025 in the United States, is revolutionizing uncrewed systems with our unified OS platform ("One OS. Any Robot") for aerial, ground,...

Are you a motivated, sales-driven professional who thrives on turning leads into results? We’re recruiting for an ambitious Business Development Representative to join a rapidly expanding UK organisation. This is an exciting opportunity to help transform sales operations, boost revenue, and play a key role in future growth. If you love fast-paced environments, enjoy communicating with...

Power Apps Developer – 3 Month Contract – Fully Remote – Inside IR35 Please read the following job description thoroughly to ensure you are the right fit for this role before applying.VIQU have partnered with a leading NHS organisation to recruit for a Power Apps Developer for a short-term contract.The RoleThe successful candidate will focus on troubleshooting and resolving issues with Power...

You will collaborate closely with cross-f...