Principal Software Engineer

Haystack
Remotefull_timePosted Apr 28, 2026
A leading FinTech disruptor is seeking a Principal Software Engineer to join their growing and profitable scale-up. This is an exciting opportunity to take on a senior role with significant influence and progression within a company at the forefront of financial technology innovation. The Role - Architect and develop highly performant and scalable software solutions. - Utilise the Microsoft tech stack, including C# and .NET. - Apply SOLID design principles to ensure robust and maintainable code. - Collaborate with cross-functional teams to deliver innovative FinTech products. - Contribute to technical strategy and mentor junior team members. - Lead complex projects from conception through to deployment. What You'll Need - Extensive experience as a C# Developer with strong .NET expertise. - Proven ability to architect scalable and reliable software systems. - Strong understanding of cloud platforms, particularly AWS. - Experience with Python development is a plus. - Deep knowledge of SOLID design principles and best practices. - Excellent problem-solving and communication skills. What's On Offer - Join a leading FinTech disruptor with significant growth potential. - Opportunity to make a substantial impact in a senior leadership role. - Access to cutting-edge technologies and challenging projects. - A collaborative and innovation-driven work environment. Apply via Haystack today!

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