Senior Backend Developer

Our client, an award-winning EAP and OH provider, is looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job, it's a chance to shape systems that support employee wellbeing in businesses across the UK & Ireland.

The Role

As a Senior Backend Developer, you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices, and success. Your technical expertise will shape our architecture and support business-critical applications.

This is a highly collaborative role for someone with a passion for software craftsmanship and continuous improvement. Using your 5+ years of backend development experience, you'll enhance core product features, design scalable systems, and work closely with relevant stakeholders to deliver technical solutions that drive real value.

Beyond your individual contributions, you'll mentor junior developers, champion best practices, and drive meaningful improvements in our development processes and tools. This is an opportunity to make a real impact; both through the systems you build and the team culture you help shape.

As a Senior Backend Developer, your key responsibilities include;

  • Enhance features and functionality of core products
  • Design and implement scalable backend systems using C# (.NET 5+ preferred)
  • Write clean, maintainable, and testable code using TDD/BDD principles
  • Create and maintain RESTful and GraphQL APIs
  • Collaborate with POs, BAs, and stakeholders to define solutions
  • Mentor junior developers and promote best practices
  • Drive improvements in development processes and tools

What you'll bring

You're an experienced backend developer with a solid foundation in modern software engineering practices. You understand what it takes to build systems that scale and you're comfortable working across the full development lifecycle; from design and implementation through testing and deployment. Strong communication skills come naturally to you, and you thrive in collaborative environments where problem-solving and continuous learning are part of the culture.

Technical expertise:

  • Proficiency in C#, .NET (preferably .NET 6+), and SQL Server
  • Strong grasp of SOLID principles and object-oriented programming
  • Experience with Git, unit testing frameworks (NUnit), and API development
  • Familiarity with CI/CD pipelines and agile methodologies
  • A genuine desire to grow and evolve within a dynamic team

Why Join?

This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters.

Ready to build something that helps others - and builds your career in the process? Apply today.

About the company:

This is a truly service-led business and the industry-leading EAP and OH provider - recognised as a Sunday Times 'Best Places to Work' organisation. With an unrivalled track record of strong year-on-year growth, they support over 80,000 organisations and 13 million lives across the UK and Ireland.

As part of a global group with 14 operating companies and circa £500m turnover, there's substantial financial backing for continued expansion, including acquisition and international development. This isn't just a job - it's a platform for exceptional career advancement with a business that's going places.

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INDMANS

Company
The Portfolio Group
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £80,000 per annum
Posted
Company
The Portfolio Group
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £80,000 per annum
Posted