Senior 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 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.

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...

Job Description Pleasenote:Applicants should review all aspects of this advert to ensure a thorough understanding. If reviewing via a screen reader, please note that the Job summary, Job description, Person specification, Benefits and Things you need to know sections have been emphasised Senior Dynamics Developer The IPO is a modern organisation which depends on its IT services to operate and...

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

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

Location: Bristol In House/Hybrid (must be within commutable distance of Bristol) Employment Type: Full-time Experience Level: Senior Salary: £60k - £80k About the Role We are seeking a highly skilled Senior Backend Web Developer with expertise across multiple backend technologies such as Python, .NET, and PHP to join our growing development team working on our AI communications platform. In...

Job Description Dynamics Developer - up to £59,000 - Hybrid (Flexible working - Newport Based) This role requires SC Clearance, so only candidates who have been in the UK for longer than 5 years and have full right to work in the UK will be considered. The Opportunity Yolk Recruitment Public Sector & Not-for-Profit team has partnered with an interesting civil service organisation who...

📍 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 working on true innovation in an ethical industry - if that sounds of interest to you then please apply, or reach out to for more information. Senior Full Stack Developer | Oracle PL/SQL | ColdFusion | Digital Transformation | 1 day every 2 week into Cardiff | £50,000-£55,000 + benefits

Senior Economic Development Officer – Sectors & Clusters Location: Hybrid – 1–2 days in the office, with regular community engagement Pay Rate: Circa £30 per hour PAYE / £38 per hour Umbrella Contract: Interim Assignment We’re looking for an experienced and enthusiastic Senior Economic Development Officer to help drive growth and innovation across key sectors in a forward-thinking local...

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

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 working on true innovation in an ethical industry - if that sounds of interest to you then please apply, or reach out to for more information. Senior Full Stack Developer | Oracle PL/SQL | ColdFusion | Digital Transformation | 1 day every 2 week into Cardiff | £50,000-£55,000 + benefitsRSG Plc is acting as an Employment Agency in relation to this vacancy.

Job Description Pleasenote:Applicants should review all aspects of this advert to ensure a thorough understanding. If reviewing via a screen reader, please note that the Job summary, Job description, Person specification, Benefits and Things you need to know sections have been emphasised Senior Dynamics Developer The IPO is a modern organisation which depends on its IT services to operate and...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

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...

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

Job Description Dynamics Developer - up to £59,000 - Hybrid (Flexible working - Newport Based) This role requires SC Clearance, so only candidates who have been in the UK for longer than 5 years and have full right to work in the UK will be considered. The Opportunity Yolk Recruitment Public Sector & Not-for-Profit team has partnered with an interesting civil service organisation who...