backend developer jobs in Clerkenwell

Job Title: UI Developer Location: Bromley Working Pattern: Full Time, Hybrid – 3 days in the office Contract Length: 12 months with potential for extending Daily rate: Circa 700 per day via an Umbrella Are you a passionate UI Developer looking to make an impact in the finance industry? Do you thrive on building modern, scalable, and user-friendly web interfaces? If so, we have an exciting...

Senior .NET / React Developer - Global Markets Inside IR35 Contract Role - London - Up to £850 per day About the Role: We are currently seeking an experienced Senior .NET Developer to join a leading global financial institution in London. This is a 6-month contract with strong likelihood of extension, working on critical desktop applications within their Global Markets technology team. Key...

FRESH has partnered with a fast-growing, SaaS company who are looking for a Senior PHP Engineer to join its engineering team at an exciting stage of growth. The business builds modern, cloud-based software used by enterprise clients across the global hospitality, spa, and wellness industry. Following significant recent funding, this role offers the opportunity to have a real impact on product...

Scala Developer - UK/Remote My client are seeking a talented Scala Developer to join their engineering team and contribute to the design and development of scalable, high‑performance applications. This role involves working on modern distributed systems, building APIs, and collaborating with cross‑functional teams to deliver enterprise‑grade solutions. Key responsibilities: - Design, develop...

You will work in a small, elite team, reporting into the CRO and partnering closely with senior investment professionals and the risk leadership, with real ownership and visibility over what you build.

You will be solving open-ended problems, making architectural decisions, and shaping how analytics and risk are embedded into the investment process.

HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and...

You will push the frontier of AI for an under-explored, massively valuable domain. - Team: We are a small, collaborative, world-class research team based in central London. - Founding level equity + competitive salary: We want you to share in the upside of what we are building.

You will play a critical role in assuring the quality, reliability and robustness of digital solutions across a wide range of client engagements.

You will be responsible for designing, implementing and maintaining high-quality automated testing solutions, providing confidence that systems meet functional and non-functional requirements across accessibility, performance, security and integration.

Technical Product Manager £60,000–£65,000 We’re looking for a Technical Product Manager to act as the link between engineering and product within a fast-growing, sports-focused organisation. This role suits someone from a software engineering background who understands how systems are built and is either looking to move into product management or has already made that transition. You’ll help...

Intelligently Moving Your World XPENG is a leading technology company focused on designing, developing, manufacturing, and marketing intelligent mobility solutions, including electric vehicles (EVs), electric vertical take-off and landing (eVTOL) aircraft, and robotics. We aim to create a thoughtful and empathetic future for mobility that enhances driving experience. Headquartered in Guangzhou,...

The Role We are hiring Full-Stack Data Engineers across multiple levels (Junior through Senior Manager) to design, build, and deliver secure, scalable data solutions for complex client environments. This is a hands-on engineering role where you will work across data ingestion, transformation, operational workflows, and decision-support systems. You’ll partner closely with client stakeholders to...

You will take full ownership of the end-to-end ecommerce journey—from platform management and conversion rate optimisation to performance marketing and customer retention.

You will be the architect of our email marketing, using Klaviyo to build sophisticated lifecycle flows (welcome, abandoned cart, post-purchase, and win-back) that turn one-time buyers into lifelong fans.

Product Manager - Payments London – 5 days in office £70,000 + bonus We are looking for a Payments Product Manager to support UK domestic payment platforms (FPS & Bacs). This isn’t a generic PM role. You’ll be embedded within engineering squads, working across the full SDLC while also taking ownership of run-the-bank operations. You’ll ensure operational excellence, resolve incidents, triage...

You will work across mobile app and IoT product UI/UX, payment and billing systems, and the end-to-end operational infrastructure required to scale a hardware-enabled consumer product in Europe.

You will serve as the critical link between local business operations, local user needs, and our distributed engineering teams in Japan, China, and Taiwan.

You will be the bridge between support, engineering, and cloud operations - Investigating and fixing complex application and infrastructure issues. - Monitoring capacity, performance, and error budgets across all deployments. - Designing automation and tooling to improve reliability and reduce manual work.

You will work end-to-end across the stack — building intuitive, performant front-end experiences and robust server-side systems that power our core platform. This is a key role where you’ll help shape architecture, influence product direction, and deliver high-impact features from concept to production.

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 partnerships, and...

Generative AI Full Stack Engineer - Managing Consultant Salary: £80,000 - £88,500 pa + £8,000 Bonus plus benefits, perks and healthcare options Job Type: Permanent - Hybrid / 2 x days per week - Travel to client site Base Locations: London, Manchester, Newcastle, Glasgow Overview: We’re looking for a GenAI Full Stack Engineer who is passionate about solving real-world challenges through...