lead python developer jobs in Wales

We are currently recruiting full stack developers to join a trading technology team at a leading investment firm. This team is responsible for building a new front-office trading platform used directly by traders and quants. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading platforms from the...

You will have an open approach to software development, as the software you develop can be used across multiple products and projects - Exposure to real-time software development and simulation standards (DIS and HLA) would be advantageous, however it is not crucial Our company: Peace is not a given, Freedom is not a given, Sovereignty is not a given

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

You will be joining a fast growing technology company building a production grade platform that enables advanced AI driven products.

You will have real ownership, influence over technical decisions and the space to build things the right way.

You will be trusted to take responsibility across the stack, including

We’re expanding our engineering team and hiring a Senior Python Software Engineer to help own and develop an established trading-related application. The system runs in production, processes high-frequency real-time data, and needs careful performance engineering and disciplined testing to keep latency and reliability where they should be. You’ll take meaningful ownership day-to-day, partnering...

📍 Hybrid (UK-wide with client site visits) | 💷 Competitive Salary + Benefits Our client is a mission-led consultancy delivering modern, secure software solutions to the UK Government and Defence sector. They’re expanding their development teams and are looking for talented Python Developers who want to make an impact on meaningful projects. You’ll be joining a high-trust, agile environment,...

About TriloDocs TriloDocs is a growing company at the intersection of technology and life sciences. We help pharma and healthcare organizations transform scientific data into clear, structured documents. Our team is passionate about creating intuitive, reliable tools that make a real difference. The Role We're looking for a Mid-Level to Senior Python Developer with a strong STEM background —...

Software Engineer (Contract) – Python / FastAPI 6 Month Contract - Fully Remote Daily Rate: £500 Outside IR35 Contact: Matthew.Makranczy@forsythbarnes.com We're looking for experienced AWS Software Engineer (contractors) to join an established platform engineering team and help take a proof-of-concept Identity & Access Management (IAM) system into production. This is a hands-on engineering...

Job Description Test Development Engineer Are you passionate about electronics and ready to take the next step in your career? This is an opportunity to join a team that genuinely invests in your growth, values your ideas, and gives you the space to make a real impact. You’ll be part of a supportive, collaborative environment where initiative is encouraged, and your contributions are...

About The Role Job level: 10 Were looking for a Lead Data Engineer to join our Data Engineering and Analytics practice. In this role, you will: - Lead the design, development, management and optimisation of data pipelines to ensure efficient data flows, recognising and sharing opportunities to reuse data flows where possible. - Coordinate teams and set best practices and standards when it...

You will be both the hands-on technical lead and the architect of our future technology direction, guiding our software team while setting the foundations for a scalable product and engineering organisation. Working closely with our valuation specialists and product team, you will design solutions that fundamentally transform how valuation advisory services are delivered.

Lead Platform Engineer London / WFH to £150k Are you a platform engineering technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently in stealth mode. As a...

About Us We are a fast-growing fintech company building modern, scalable platforms that power real-world financial products. Our engineering culture values clean architecture, strong ownership, and pragmatic innovation. We operate in a cloud-native, microservices environment and invest heavily in frontend quality, design systems, and developer experience. The Role As a Lead Fullstack Engineer,...

Job Description Join the Land Ceptor team and work to support the British Army in realising the full potential of its latest Ground Based Air Defence capability and tailoring this capability for the needs of existing and emerging export customers. You'll be building on world-class design: incorporating new ideas, functionality and technology to deliver to our customers. Salary: Circa £ 50,000...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

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.

We are currently recruiting full stack developers to join a trading technology team at a leading investment firm. This team is responsible for building a new front-office trading platform used directly by traders and quants. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading platforms from the...

We’re expanding our engineering team and hiring a Senior Python Software Engineer to help own and develop an established trading-related application. The system runs in production, processes high-frequency real-time data, and needs careful performance engineering and disciplined testing to keep latency and reliability where they should be. You’ll take meaningful ownership day-to-day, partnering...

📍 Hybrid (UK-wide with client site visits) | 💷 Competitive Salary + Benefits Our client is a mission-led consultancy delivering modern, secure software solutions to the UK Government and Defence sector. They’re expanding their development teams and are looking for talented Python Developers who want to make an impact on meaningful projects. You’ll be joining a high-trust, agile environment,...

You will be joining a fast growing technology company building a production grade platform that enables advanced AI driven products.

You will have real ownership, influence over technical decisions and the space to build things the right way.

You will be trusted to take responsibility across the stack, including