Python Software Developer jobs in United Kingdom

Join a fast-growing fintech company building powerful cloud-based trading, analytics, and compliance solutions used by financial professionals around the world. You'll work on real, production-grade systems alongside experienced engineers in an environment that values quality, learning, and collaboration.

This role is ideal for a solid mid-level engineer who enjoys problem-solving, wants to deepen their financial systems knowledge, and likes seeing their work make an impact.

• Highly competitive salary

• Employer-paid private health insurance, life assurance & income protection

• Pension with employer-matched contributions

• Progressive holiday and time-off policies

• Weekly catered lunches and office snacks

• Regular company events and team activities

• Modern Belfast office with a strong engineering culture

• Hybrid working model after 6 months (3 days onsite / 2 days remote)

The company is a leading provider of cloud-based financial trading, analytics, and compliance software. Its platforms are trusted by a wide range of clients—from early-stage firms to global financial institutions—to streamline operations, meet regulatory requirements, and gain market insights.

You'll bring strong technical fundamentals, a practical mindset, and the confidence to work independently when needed.

Essential:

• 3+ years' experience in software development, ideally in financial systems

• Strong debugging, troubleshooting, and problem-solving skills

• Experience with one or more of: .NET / C# / Java / C++ / Python / PowerShell

• Comfortable working in a Windows-based environment

• Degree (or equivalent experience) in Computer Science, Engineering, Maths, or related discipline

• Clear communicator with a professional, collaborative approach

Nice to Have:

• Exposure to financial integrations (FIX, iLink, proprietary messaging protocols)

• Experience working directly with clients or customer-facing systems

• Designing, developing, and configuring API components to meet client requirements

• Debugging and analysing user APIs, interfaces, and platform integrations

• Gaining hands-on exposure to financial markets and trading systems

• Collaborating with support teams to diagnose and resolve technical issues

• Supporting client onboarding and improving overall system usability

• Taking part in deep-dive learning sessions focused on engineering best practices and software design

Interested? Apply via the link or contact VANRATH for a confidential conversation. Follow VANRATH on LinkedIn for career advice, industry insights, and new opportunities.