Senior .NET Developer

MRJ Recruitment; Manchester; On-site; GBP 50,000 - 70,000; Full time

Job summary

MRJ Recruitment is looking for a Senior .NET Developer in Manchester to join their dynamic tech team. This role involves building integrations, applying best development practices, and collaborating with engineering teams to maintain a robust CI/CD pipeline. The ideal candidate should have strong .NET and C# skills, experience with Akka.NET, N-Tier architecture, and Web Services, along with an agile mindset. You'll significantly contribute to the development of a rapidly scaling platform, enhancing the user experience for millions worldwide.

Qualifications

• Solid commercial experience with .NET and C#.
• Hands-on experience with Akka.NET for building distributed, scalable systems.
• Familiar with N-Tier architecture and service-oriented design.
• Strong understanding of OOP principles and design patterns.
• Experienced with Web Services, WebAPI, and WCF.
• Comfortable with SQL and NoSQL databases.
• Skilled in performance tuning and optimisation.
• Confident with Git and source control best practices.
• Experienced in Agile or Kanban environments.

Responsibilities

• Build and maintain integrations between web front-ends, back-end services, and third-party systems.
• Apply software development best practices and design patterns.
• Deliver new features while writing clean, maintainable code.
• Take ownership of developments from implementation to production support.
• Collaborate with platform engineering teams for CI/CD maintenance.
• Ensure all code is testable with various types of tests.

Skills

Commercial experience with .NET

C#

Akka.NET

N-Tier architecture

Service-oriented design (SOA)

OOP principles

Web Services/WebAPI

WCF

SQL databases

NoSQL databases

Performance tuning

Git

Agile methodologies

Job description

Global Tech Company | Agile Delivery Teams | Hands-On | UK-Based

Millions of customers. One proprietary platform. Infinite possibilities.

This global technology business has just completed a massive migration to their own platform, and now, the stage is set for scale, innovation, and speed. Products are being built at pace, technology is unlocking new capabilities, and the experiences delivered to customers worldwide are next-level.

At the heart of it all? The tech team. And they’re looking for a Senior .NET Developer to join one of their agile delivery squads and help shape the future of their platform.

What You’ll Do

• Build and maintain integrations between web front-ends, back-end services, and third-party systems.
• Apply software development best practices and design patterns alongside fellow developers and QA engineers.
• Deliver new features while writing clean, maintainable, high-quality code.
• Take ownership of developments from initial implementation through to production support.
• Collaborate with platform engineering teams to maintain a robust CI/CD pipeline.
• Ensure all code is testable, covering unit, integration, UI, and performance tests.

Who You Are

• Solid commercial experience with .NET and C#.
• Hands-on experience with Akka.NET for building distributed, scalable, fault-tolerant systems.
• Familiar with N-Tier architecture and service-oriented design (SOA).
• Strong understanding of OOP principles and design patterns.
• Experienced with Web Services, WebAPI, and WCF.
• Comfortable with SQL and NoSQL databases.
• Skilled in performance tuning and optimisation.
• Confident with Git and source control best practices.
• Experienced in Agile or Kanban environments.
• Excellent collaborator and communicator, with a problem-solving mindset.
• Flexible for occasional releases or out-of-hours support when needed.

Why This Role Stands Out

You’ll be joining a team where your work actually matters, helping millions of users around the world interact with cutting-edge technology every day. You won’t just be maintaining code, you’ll be shaping the platform itself, contributing to a product that’s scaling rapidly and innovating constantly.