python backend developer jobs in Clerkenwell

Python Developer – London - £700 per day (Python, Django, AWS, REST API’s, Microservices, Kubernetes, GraphQL, Flask) We’re working with a large media company that are looking for a contract Python engineer to join them for an initial 3-month contract. This person will be tasked with working alongside their existing engineering team as part on an ongoing digital transformation. This role will...

You must be entitled to work in the UK.

You should be a curious individual with a passion for coding for applications in the physical world.

You should be excited to work in a multi-discipline team and open to learn from other disciplines.

You will have the freedom to see your project through its entire development cycle from the planning stage, testing all the way to commercial deployment.

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.

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...

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...

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...

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...

JOB DESCRIPTION POSITION: Database Developer LOCATION: London/ hybrid DURATION: 6-months initially Job Description: The DB Developer will be responsible for the administration, documentation, performance, tuning, design, integrity and security of the enterprise’ production databases (mainly SQL, Snowflake), data transfers, and systems. In addition to traditional DBA maintenance, this role...

You will work directly with portfolio managers, traders, and risk managers to deliver innovative quantitative solutions in a fast-paced, high-impact environment.

You will be required to work full time on a secure Government sites in London. Excellent opportunity for a professional contractor to work on a long-term assignment at the start of the project.

🚀 C# / .NET Developer – Permanent 📍 London (Hybrid) 💷 £58,000 – £62,000 per annum 🗓 Full-time (5 days per week) 🏢 Office-based Tuesday, Wednesday & Thursday 💰 Bonus: 10% company bonus plus an EOT (tax-free) bonus in the same bonus pot The Opportunity We’re hiring a C# / .NET Developer to work for a insurance brokerage client. You’ll join a small, collaborative technology team supporting...

You will take ownership of implementing complex pricing models, designing calibration routines, integrating market data, and ensuring robust model performance in live trading environments. This position is well suited for someone who blends strong quantitative expertise with production-grade engineering skills and enjoys solving sophisticated modelling challenges.

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...

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.

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...

🚀 Software Engineer – Agentic AI 🚀 ✨ Fintech start-up backed by serial entrepreneurs ✨ 💎 The kind of equity you actually realise 💎 📍 London - 4 days in office 💸 £100k - £200k base (level-dependent) 💲 $160k equity vested over four years 💗 Onsite chef, barber, catered breakfasts, gym membership Join this rapidly scaling AI-native Fintech start-up that’s already raised a significant Series A...

We are looking for a Data Engineer who will design and implement customer data solutions that enable personalised experiences while ensuring privacy, quality, and accessibility of customer information across all touchpoints. Length: 12 months Location: London, UK Environment: Hybrid - 2-3 days in the office Key responsibilities: - Leading engineering decisions for customer data, including...

You will help push the frontier of AI-native data systems in an under-explored, massively valuable domain - Team: A small, collaborative, world-class research and engineering team based in central London - Founding-level equity + competitive salary: Meaningful ownership alongside a salary that lets you focus on building something great

HCLTech is a global technology company, home to more than 220,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, 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,...