Harris Computer · 1 month ago
Senior .NET Developer
Office - Plymouth
Full-time
Hybrid
Senior Level
5+ years expHarris Health Alliance is a part of the Harris Computer Group, focusing on providing mission-critical software for healthcare organizations globally. The Senior .NET Developer will be responsible for designing and developing secure, scalable Web API backends and integration solutions, while also mentoring team members and contributing to architectural decisions.
Responsibilities
Design, develop, and maintain high-performance Web API backend systems using the latest .NET (8+) and C#, with occasional frontend development
Participate in the full software development lifecycle, from requirements gathering and design through to deployment and maintenance
Develop and consume RESTful APIs that adhere to OpenAPI specifications and integrate with third-party services as required
Collaborate with cross-functional teams (QA, Platforms, Product) to ensure seamless delivery
Conduct code reviews, provide mentorship, and enforce best practices in software development
Optimise performance and scalability of existing systems
Ensure adherence to security, compliance, and coding standards
Troubleshoot, debug, and resolve complex technical issues in production and development environments
Contribute to architectural decisions and help shape technical direction
Qualification
Required
5+ years of commercial experience in software development, with at least 4 years of hands-on C# /.NET experience in production environments
Proven experience with Web API development
Solid experience with PostgreSQL and/or SQL Server, including a strong understanding of database design principles
Demonstrated ability to produce and maintain high-quality technical documentation
Experience designing and implementing high-availability architectures
Hands-on experience with cloud platforms (preferably Microsoft Azure or equivalent)
Familiarity with CI/CD pipelines (TeamCity, Azure DevOps, or GitHub Actions), automated testing, and infrastructure-as-code concepts
Proficiency with containerisation and orchestration, including Docker and Kubernetes deployments (Helm, Terraform)
Exposure to security best practices within regulated environments, including OWASP fundamentals, authentication and authorisation standards (OAuth2, OpenID Connect), secrets management, TLS/mTLS, and certificates
Proven ability to lead solution designs and guide engineering efforts across multiple integrations concurrently
Demonstrated experience working within Agile / Scrum development environments
Preferred
Experience with desktop application development would be an advantage (ASP.NET, Entity Framework, Web API, WinForms, WPF)
Experience mentoring junior developers or leading small teams is considered an asset
Benefits
5 Personal Days leave entitlement are granted over and above the standard 25 days holiday and bank holidays.
Harris also offers all UK employees an annual Lifestyle Reward amounting £325 per annum/pro rata.
Company
Harris Computer
Harris provides mission-critical software solutions for the Public Sector, Healthcare, Utilities, and Private Sector verticals throughout North America, Europe, Asia, and Australia.
10001+ employees
H1B Sponsorship
Harris Computer has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2022 (2)
2020 (2)
Funding
Current Stage
Late StageLeadership Team
Scott Thomas
Group Leader/CEO - Novum Group, Harris Healthcare (Constellation Software TSX:CSU)
Diane Gibson, SHRM-CP
Human Resources Business Partner
Company data provided by crunchbase