Lead Software Engineer – C#, Cloud & AI Architect

Arch Capital Group; Manchester; On-site; GBP 68,000 - 108,000; Full time

Job summary

Arch Capital Group in Manchester is seeking a Lead Software Engineer to guide design and deliver high‑quality C# applications. You will lead architecture discussions, promote best practices, and mentor engineers across the team in a fast-paced environment.

This role requires deep knowledge of TDD/BDD/DDD, cloud platforms (Azure/AWS), SQL/NoSQL, and modern DevOps. You will collaborate with peers to optimize performance, document systems, and stay current with evolving technologies to enable

Qualifications

• Comprehensive understanding of C#
• Experience with TDD, BDD, and DDD
• Experience with SQL and NoSQL DBMS
• Experience with a cloud platform such as Azure or AWS
• Experience with an AI platform such as OpenAI is desirable

Responsibilities

• Provide technical guidance and leadership in the design and development of software applications using C#.
• Ensure the application of best practices in coding, testing, and maintenance.
• Stay updated with the latest developments in C# and related technologies.
• Design, code, test, debug, and document complex applications and systems.
• Optimize and refactor existing code to improve performance and maintainability.
• Collaborate with other team members to integrate systems and solutions.

Skills

C# proficiency

TDD/BDD/DDD

AI platform OpenAI

Cloud platforms

Tools

GitHub

Job description

Arch Capital Group in Manchester is seeking a Lead Software Engineer to guide design and deliver high‑quality C# applications. You will lead architecture discussions, promote best practices, and mentor engineers across the team in a fast-paced environment.

This role requires deep knowledge of TDD/BDD/DDD, cloud platforms (Azure/AWS), SQL/NoSQL, and modern DevOps. You will collaborate with peers to optimize performance, document systems, and stay current with evolving technologies to enable