Lead C# Developer .Net Core – Fintech

Company: Client Server
Apply for the Lead C# Developer .Net Core – Fintech
Location: Newcastle upon Tyne
Job Description:

Overview

In this role you lead the design and implementation of core applications, building APIs and microservices while ensuring secure, reliable server environments. You work hands-on with architecture and system design, mentor colleagues, and drive best practices across the team. You’ll collaborate with stakeholders to shape the product roadmap and provide technical feasibility guidance. This is a scale-up fintech environment where your technical leadership accelerates delivery and quality.

Pay / Benefits

  • Salary up to 130k
  • Bonus
  • 25 days holiday
  • Bupa healthcare
  • Generous pension contribution
  • Continuous career development opportunities

Responsibilities

  • Design and implement core application logic, APIs, and microservices
  • Oversee infrastructure and server environments for reliability and security
  • Gather requirements with internal teams and customers to inform the product roadmap
  • Contribute to architecture and design decisions while remaining hands-on
  • Lead code reviews, mentor engineers, and remove blockers to deliver high-quality software

Key requirements

  • Minimum 2.1 BSc in Computer Science or equivalent
  • Strong technical leadership and collaboration skills
  • Expertise with modern C# .Net Core; Python helpful; other OO languages (C++, Java) considered
  • Experience across full software development lifecycle and in distributed systems
  • Solid understanding of OOP, data structures, design patterns, and algorithms
  • Motivation to shape and influence a scaling fintech product
  • collaboration
  • problem solving
  • leadership
  • C#
  • .Net Core
  • APIs and microservices

…

Posted: October 10th, 2026