Principal Backend Developer

OverviewPrincipal Backend Developer (C# / .NET / Playwright)

The Opportunity: This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You''ll be joining a company that''s scaling rapidly, building innovative products that make a real difference to its customers. This role offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers.

Responsibilities

Architect and build scalable backend services in C# / .NET

Drive adoption of clean coding practices, design patterns, and SOLID principles

Mentor engineers, fostering a culture of growth, learning, and high performance

Collaborate with product owners to refine requirements and translate them into technical solutions

Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality

Lead technical discussions, setting direction on tools, frameworks, and approaches

Troubleshoot and resolve complex technical challenges across backend services

Optimise system performance and ensure resilience across platforms

Review code and guide engineering standards across the team

Contribute to product strategy by aligning technical roadmaps with business goals

Qualifications

Strong experience developing backend systems with C# and .NET

Deep knowledge of cloud environments (Azure preferred)

Experience in designing APIs and microservices at scale

Solid understanding of automation testing tools (Playwright desirable)

Leadership experience - mentoring, coaching, and guiding engineering teams

Strong problem-solving skills with an eye for performance optimisation

Enthusiasm for delivering quality solutions in a SaaS environment

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