Senior Full Stack Java Developer jobs in Hertford Heath

At Tab we've built a payments platform for independent tourism businesses off the beaten track, capable of handling thousands of payments an hour across 100 currencies, in real-time, with near-zero downtime — backed by Python + Flask + Postgres . We're also building a direct-booking platform and tra

Harvey Nash

£8,400 - £9,600 /year

Senior Java Developer - Multithreading/caching - sought by leading investment bank based in London - Contract *inside IR35 - umbrella* Key Responsibilities Develop and maintain high-performance backend services for complex data processing workloads. Design scalable architectures for large-volume cal

Senior Full Stack Engineer Permanent | £70,000-£90,000 | Fully Remote (UK) I'm working with a mission-driven healthcare technology company building a regulated B2B platform used globally to improve access to care. They're hiring a Senior Full Stack Engineer with a backend leaning focus to join a sma

🌍 Senior Full Stack Developer — Civic Tech Spinout — London I'm working with a small, ambitious civic tech organisation that's spinning out to become independent. They've built a platform used by government departments, local councils and public institutions to engage citizens on the issues that ma

Citi

Role Overview: The Senior Java Full-Stack Engineer is an experienced, individual contributor position responsible for designing, developing, and implementing high-quality, end-to-end application systems and programs in coordination with the Technology team. The overall objective of this role is to d

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

B2B SaaS | Pioneering Web Accessibility App | Angular, .Net, C#, ASP, SQL, OOO Programming, Python, API About EnableAll We’re on a mission to make the web more accessible to people with disabilities and neurodiversities. Our AI-powered platform helps eCommerce businesses comply with global accessibi

Job Description: Job Title Agile Full Stack Developer (Kotlin, TypeScript) Location London Corporate Title Assistant Vice President You will be working as a full stack developer as part of the Good to Sign (GTS) team in Client 360 technology. You will work as part of an agile/XP team, using test dri

About Citi As the world’s most global bank, Citi gives you the tools to be a trailblazer. We’re not just building technology; we’re building the future of banking. With thousands of employees located around the globe, we are an international team encompassing a broad range of teams, roles, and cultu

Position Description At CGI, you will turn emerging ideas into impactful, real-world solutions that shape how organisations innovate and operate. As a Full Stack Developer within our IP & Innovation team, you will design and deliver end-to-end products that move from concept to client deployment

Music is Universal It’s the passionate and dedicated team at Universal Music who help make us the world’s leading music company. From A&R to finance, legal to digital, sales to marketing, Universal Music is the place to grow and develop your career within a truly commercial and innovative busine

Music is Universal It’s the passionate and dedicated team at Universal Music who help make us the world’s leading music company. From A&R to finance, legal to digital, sales to marketing, Universal Music is the place to grow and develop your career within a truly commercial and innovative busine

eFinancialCareers

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Role

Senior Java Developer Location: London Role Type: Permanent Work Setup: Onsite - 5 days a week Who We Are We are a consultancy operating within Robert Walters, the world's most trusted talent solutions business. Across the globe, we deliver recruitment, outsourcing, and talent advisory services for

Location: London, UK (Hybrid - 3 days onsite) Contract: Initial 12-month contract Rate: Up to £800/day (Inside IR35) We are seeking a Senior Quantitative Developer to join a high-performing electronic FX (eFX) technology team within a leading global investment bank. This role focuses on the design,

Senior Developer | £600 - £770 We're working with a leading digital transformation partner delivering high-impact cloud solutions for the public sector on this exciting opportunity. We are looking for a heavy-hitting Senior FullStack Developer to drive innovation in a cloud-native environment. You w

Lead Full Stack Software Developer | £80,000 - £100,000 We're working with a fast-growing UK SaaS technology company building data-driven digital products on this exciting opportunity. This is a high-impact, hands-on leadership role where you will shape the next generation of customer-facing platfor

Senior Java Developer | £85,000 - £95,000 We're working with a leading financial services technology vendor on this exciting opportunity. Are you ready to spearhead a flagship platform rebuild at the heart of London’s fintech scene? This is your chance to architect and deliver high-performance, auto

We are recruiting for a Senior Java / Kotlin Engineer. On-site: 2 dpw in Leeds Or London Key skills: strong experience in Java or Kotlin (back-end), and comfortable with TDD (test-driven development). Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated t

We are recruiting for a Senior Java / Kotlin Engineer. On-site: 2 dpw in Leeds Or London Key skills: strong experience in Java or Kotlin (back-end), and comfortable with TDD (test-driven development). Who We Are AND Digital are a tech company focused on accelerating digital delivery and dedicated to