Senior Software Developer and Team Lead (.NET)

• →Play a key role in the design and delivery of new features and platform improvements using .NET 10 and other modern technologies, contributing as a senior individual contributor within one of our collaborative engineering teams.

• →Share ideas, solve complex technical problems, and help shape the future technical direction, architecture and engineering standards of our products.

• →As a Team Lead, take ownership of team sprint delivery, facilitating sprint activities, coordinating priorities, resolving blockers and helping ensure releases and wider project deliverables remain on track and delivered successfully.

• →Support and mentor other developers through technical guidance, collaboration, code reviews and sharing best practice, while also supporting their career development and contributing to a collaborative, high-performing engineering culture.

• Proven experience operating successfully at senior developer/engineer level within commercial software teams, making strong hands-on technical contributions as a senior individual contributor.

• 7+ years’ commercial experience delivering modern C# .NET solutions, including at least a year at Senior level.

• Strong commitment to engineering best practices, including writing clean, maintainable and testable code, with experience applying unit and integration testing standards within modern development teams.

• Experience of Clean Architecture or similar modern approaches, such as hexagonal or onion architecture, beyond traditional N-tier designs.

• Clear communication skills, with the ability to collaborate effectively across diverse engineering teams and the wider business.

• Experience mentoring, guiding and supporting other developers, helping them grow through collaboration, technical guidance and knowledge sharing.

• Eligible to work in the United Kingdom.

• Able to work on-site and comfortable working core hours of 8.30am to 5pm Monday to Friday, with flexibility for additional time against business needs.

• Working with enterprise-scale software, microservices, event-driven architecture or SaaS product development.

• Experience with TDD, DDD, secure coding/OWASP practices, Azure DevOps, CI/CD pipelines and cloud platforms like Azure.

• Experience with some of the tech we use: SQL, RabbitMQ, Docker, Kubernetes or Blockchain.

Our interview process:

1. Introductory call: A chance for us to get to know you, and for you to get to know us. We’ll cover your experience, a few competency-based questions, and some light technical discussion. 
2. Technical interview: Technical questions and discussion around your approach and problem-solving, includes a practical coding exercise focused on real-world problem solving. 
3. Final conversation: Meet our Managing Director for an informal chat about the role, the team, your potential impact, and the growth opportunity available to you. 

Location and hours: Onsite, Eastern Business Park, St Mellons, Cardiff, Wales.

Min Hours 37.5hrs per week, 8.30am to 5pm Monday to Friday, with up to one hour for lunch.

Diversity & Inclusion: Advanced Secure Technologies is an equal opportunity employer, proud of our ongoing efforts to foster diversity and inclusion. We welcome applicants from all backgrounds and process your personal data in accordance with our Privacy Notice.