C#/.NET Backend Engineer - FinTech Scale-Up, Flexible Hours

Client Server; Newcastle upon Tyne; On-site; GBP 40,000 - 70,000; Full time

Benefits offered by this job

25 days holiday

Bupa healthcare

Pension contributions

Career development opportunities

Friday drinks and team events

Job summary

Client Server is hiring a Backend Software Engineer to join a FinTech scale-up backed by a hedge fund client. You will work with a small team to deliver the core platform in a Microsoft environment, using the latest C#/.NET.

You’ll own technical projects across the full software development lifecycle, shaping how we scale and perform in production. The role emphasizes collaboration, problem-solving, and a strong foundation in CS fundamentals such as OOP, data structures, and design patterns,

Qualifications

• BSc in Computer Science or equivalent with 2:1 final grade from a top-tier university.
• A-levels: strong grades.
• Experience with modern C#/.NET Core and Python is beneficial.
• Strong knowledge of software engineering best practices and full SDLC.
• Solid understanding of OOP, data structures, design patterns and algorithms.

Responsibilities

• Lead backend development in a Microsoft environment using the latest C#/.NET to deliver the core platform.

Skills

C#/.NET Core

Python

OOP

Data Structures

Design Patterns

Algorithms

Education

2:1 BSc in Computer Science or related

A-levels grades

Tools

ASP.NET

Job description

Client Server is hiring a Backend Software Engineer to join a FinTech scale-up backed by a hedge fund client. You will work with a small team to deliver the core platform in a Microsoft environment, using the latest C#/.NET.

You’ll own technical projects across the full software development lifecycle, shaping how we scale and perform in production. The role emphasizes collaboration, problem-solving, and a strong foundation in CS fundamentals such as OOP, data structures, and design patterns,