Lead Software Engineer, Principle Developer, Terraform, AZURE, C# 100% Remote UK Inside IR35 (Central London / West End)

Job Title: Senior .NET Developer (12-Month Contract)

Location: 100% Remote

Inside IR35

We are looking for an experienced and talented Senior .NET Developer to join our dynamic development team on a 12-month contract with the potential for extension. As a Senior .NET Developer, you will play a crucial role in creating high-quality, scalable, and resilient solutions while mentoring junior team members and supporting existing initiatives.

Responsibilities:

• Create and adapt new C# / .NET Core services to meet evolving business requirements.
• Mentor and coach existing team members through pair programming, peer reviews, and team talks, helping them improve their C# / .NET Core skills.
• Support and enhance current systems and initiatives during office hours, ensuring that service level objectives are met.
• Maintain a strong focus on quality, reusability, clean architectures, security, and resilience across the full application lifecycle.
• Collaborate with the Lead Developer, Delivery Manager, and Product Owner to design service improvements and new feature additions.

Key Essentials:

• 3+ years of experience in a senior software development role at the enterprise level with a proven track record of successful project delivery.
• Experience mentoring junior developers and being an active member of an agile and self-improving team.
• Strong diagnostic skills and experience providing levels of support when issues arise.
• Extensive experience (5+ years) with C# and .NET Core.
• Deep understanding of Object-Oriented (OO) concepts and SOLID design principles.
• Proven experience developing in Microsoft Azure and using Terraform.
• Strong knowledge of SQL and database design.
• Experience in building extensive unit and integration tests, ideally following TDD or BDD approaches.
• Proficiency in scripting languages such as PowerShell is a nice-to-have.

Desirable Skills:

• Experience working with distributed and hybrid teams.
• Ability to effectively communicate complex technical concepts in non-technical terms to stakeholders.
• Familiarity with modern security frameworks like OWASP and SANS25.
• Experience with Continuous Delivery and Automated Deployment using tools like Azure DevOps.