Lead C# Developer .Net Core - Fintech

Lead C# Developer / Backend Software Engineer (C# .Net) Newcastle onsite to £150k

Do you have expertise with backend C# combined with strong technical leadership skills? You could be joining a well-funded Fintech scale‑up that is establishing a technical centre of excellence in the North East.

As a Lead C# Developer / Backend Software Engineer you'll design and implement the logic behind core applications, build APIs and microservices that handle data processing, business rules and third‑party integrations and oversee the configuration and upkeep of secure, reliable server environments.

You’ll work closely with internal teams and customers to gather detailed requirements through meetings and workshops and help shape the product vision and roadmap by offering technical insight and feasibility guidance, remaining hands‑on with architecture and design.

You will be a technical leader, instilling best practices, conducting code reviews, mentoring and collaboratively problem solving to help your team remove any blockers and deliver high quality software.

You'll join colleagues in brand new Central Newcastle offices on a full‑time basis (Monday to Friday), working hours 09:00–18:00 with some flexibility. The offices are well equipped and offer fantastic views across the City and the local countryside, many employees walk or cycle in (onsite showers available!).

• You have achieved a minimum 2.1 BSc in Computer Science or similar technical discipline from a top tier / Russel Group university, backed by A's at A-level
• You have strong technical leadership skills
• You have expertise with modern C# .Net Core, Python skills would also be of benefit (will also consider other OO languages e.g. C++, Java)
• You have a strong knowledge of modern software engineering best practices and have experience across the full software development lifecycle
• You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems
• You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms
• You're excited to join a scaling company in a role that you can shape and influence

• Salary to £150k + Bonus
• 25 days holiday
• Social team atmosphere with a range of events and early finish for drinks on Fridays

Apply now to find out more about this Lead C# Developer / Backend Software Engineer (C# .Net Core) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

• Mid‑Senior level

• Full‑time

• Engineering and Information Technology

• Software Development
• Investment Management, and Technology, Information and Media