Senior C# / .NET Core Backend Engineer – FinTech (Newcastle)

Client Server Limited; Newcastle upon Tyne; On-site; GBP 99,000 - 121,000; Full time

Benefits offered by this job

Salary up to £110k+

25 days holiday

Bupa healthcare

Generous pension

Career development opportunities

Social team atmosphere

Job summary

Client Server Limited in Newcastle is seeking a Senior C# Developer to join a backend team on-site, delivering high-quality code for complex FinTech-grade systems using the latest C# .Net Core. You will own technical projects and contribute across the full development lifecycle.

The role offers up to £110k+ with bonus, 25 days holiday, Bupa healthcare, pension, and ongoing career development opportunities in a collaborative, social environment.

Qualifications

• 2.1 BSc in Computer Science or equivalent from a top tier university.
• Strong collaboration and problem-solving skills for distributed systems.
• Expertise with modern C# .Net Core; Python skills beneficial.
• Solid understanding of software engineering best practices and full software development lifecycle.
• Strong CS fundamentals: OOP, data structures, design patterns, algorithms.
• Motivated to shape and influence a startup role.

Responsibilities

• Collaborate with a small team to deliver core platform using C# .Net Core and produce high-quality code.
• Take ownership of technical projects across the full development lifecycle to meet business needs.
• Contribute to architecture and best-practice discussions to drive scalable backend systems.

Skills

C#

.Net Core

Python

Education

BSc in Computer Science (2:1)

Job description

Client Server Limited in Newcastle is seeking a Senior C# Developer to join a backend team on-site, delivering high-quality code for complex FinTech-grade systems using the latest C# .Net Core. You will own technical projects and contribute across the full development lifecycle.

The role offers up to £110k+ with bonus, 25 days holiday, Bupa healthcare, pension, and ongoing career development opportunities in a collaborative, social environment.