Senior Python Developer jobs in County of Cardiff

Senior Software Developer - Java / Python with Delphi We’re looking for an experienced Software Engineer (Java/Python) to join a high-profile government project focused on modernising and integrating complex systems within a secure environment. You’ll work across backend development, integration and automation – with occasional support for legacy Delphi components as part of wider platform...

Senior Python Developer – iGaming (RGS Integration) Location: Buenos Aires, Argentina Salary: negotiable, depending on experience Clear Edge has partnered with a leading iGaming provider to recruit a Senior Python Developer. This is a chance to join a fast-growing company where you’ll play a vital role integrating their Remote Gaming Server (RGS) with global casino platforms, ensuring secure,...

Senior Python Developer - Python, Flask, SQL, AWS OB have partnered with a FinTech company, who are looking to bring on a Senior Python Developer to their highly skilled engineering team, where you'll have the opportunity to work closely with the CTO & Head of Engineering to have an impact from day one, and develop their systems. In this role, you'll design highly complex systems and...

Foxley Talent are working with a growing SaaS company that's building a powerful platform to help businesses manage employee shares and incentive plans. They are looking for a driven Senior Python/Django Developer in the UK to join their fully remote team and play a key role in the next phase of product growth. This is a hands-on role in a small but ambitious company solving real-world problems...

2x Python Developers – NHS OR Central Gov. experience is ESSENTIAL *Full Stack; Python, Vue and AWS* Location: Leeds 1-2x per Month Contract Type: Contract Rate: £500/day Inside IR35 Duration: Until December 2026 (13 Months) Overview We’re working with a digital consultancy delivering modern, user-centred technology solutions within the NHS. They’re looking for an experienced Python...

RJC are partnering with a leading European energy trading company currently seeking a Python Developer to join their growing engineering team. This is an exciting opportunity to work on high-impact systems that support real-time trading, risk management, and data-driven decision making. Key Responsibilities Develop, maintain, and optimize Python applications for trading and analytics Integrate...

Freelance Python Developer | Part-time contract | Outside-IR35 Location: Remote UK Contract: Part-time (ideally long-term collaboration) Outside IR35 / Freelance Outside IR35 Time requirements: minimum 1 day per week We’re partnering with an independent, not-for-profit organization that provides trusted testing and certification services to the jewellery and precious metals sector. They’re...

We are delivering a large-scale, multi-year AI-enabled digital services programme aimed at transforming citizen-facing experiences across the UK. The programme focuses on building secure, scalable, and AI-powered services, with an emphasis on trust, resilience, and common digital standards. Candidates will join a cross-functional team shaping next-generation public services through cutting-edge...

Great opportunity for Senior Python Engineers to work remotely for a UK based AI scale-up. You'd join a large engineering department and would work within a cross functional product-based team responsible for building cloud-native, event-driven systems in a collaborative DevOps environment. The teams are responsible for all aspects of the product they work on, from design through to...

Python/Golang/Rust Developer - Digital Assets arm of Global Fund - Up to £200k base + Bonus One of the leading absolute return/hedge fund managers within finance, currently managing over $40bn, is diversifying further by creating a separate division to focus on managing crypto and digital asset strategies. Meaning these guys offer the dynamism and entrepreneurial spirit of a small firm, with...

A data-led digital business is hiring a Web Data Engineer to solve complex challenges around large-scale data collection, website access, and automation. This is a hands-on technical role for someone who can architect stable, scalable systems that extract, process, and enrich web data — and now, help integrate AI-assisted workflows to make those systems even smarter. Role: Web Data...

Senior+ Software Engineer - Python | FastAPI | AWS 💵 £90,000-120,000 + Bonus and Stock 📦 Flexible benefits | 90 day work-from-anywhere perk 💻 Python, FastAPI, gRPC, PostgreSQL, DynamoDB, AWS 📍 Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We’ve partnered with one of the UK’s most exciting scale-ups in the Insuretech space over...

Senior Data Analyst | SQL | Python | Amplitude | Remote Europe | Up to £100K Maze is partnering exclusively with a rapidly scaling, AI-powered technology company in the digital economy to hire a Senior Data Analyst. This is a high-impact role for a data professional who thrives on uncovering insights, driving experimentation, and shaping strategy through data. Key Requirements - 5+ years of...

Senior Python Engineer | Fully Remote | High-Growth Startup (AI / Data / Cloud) Join one of the most exciting early-stage startups of the year — backed by previous huge success, led by an exceptional founding team, and already showing incredible product-market fit. This is a rare opportunity to get in early, take real ownership, and build the foundations of a next-generation platform at scale....

Senior Software Engineer - Backend & Data | Fully Remote (UK) Founding Engineer | Python | GCP | Terraform | Event-Based Systems | Data Pipelines An innovative, mission-driven LegalTech SaaS start-up is looking for a Senior Product Engineer (Backend & Data) with deep experience in Python, Product development, and Data engineering. Role Information: - Salary: Up to £100,000 (DOE) + Equity -...

Join our client at the forefront of AI innovation. They’re shaping the digital foundations that will define how humans and AI learn from each other — pioneering technology that is set to transform the way intelligent systems evolve. The Role We’re seeking Senior Software Engineers with a product builder mindset to help shape and scale a cutting-edge platform. You’ll work across a modern tech...

We're hiring for a global tech client building next-gen AR/VR and smart-glasses camera systems. This role sits in their camera architecture team and focuses on prototyping imaging and camera simulation pipelines The Offer - Annual Salary up to £125,000 doe and location - 12 months contract - Inside IR35, PAYE - paid weekly - Fully remote in the UK - Must already hold the right to work in the UK...

You will collaborate closely with other engineers, data scientists, and analysts as part of a broader engineering community. These are some of the key components to the position:

Senior Python Developer - Python, Flask, SQL, AWS OB have partnered with a FinTech company, who are looking to bring on a Senior Python Developer to their highly skilled engineering team, where you'll have the opportunity to work closely with the CTO & Head of Engineering to have an impact from day one, and develop their systems. In this role, you'll design highly complex systems and...

Senior Python Engineer – Join a profitable FinTech Scale-Up 🚀 💰Up to £100,000 🏡Remote working – once a month onsite in London 💻Python, PostgreSQL FastAPI, Django We’re partnered with a leading FinTech scale-up who are transforming how small businesses access finance to grow and scale. The business is backed by a strong track record and with an ambitious mission, they’ve successfully provided...