Senior Software Engineer (.Net)

About the role

Blue Mountain is looking for a Senior Software Engineer (.Net) to design, build and enhance web‑based solutions that support life‑sciences manufacturers worldwide. You will work on regulated, high‑impact applications that must meet FDA 21 CFR Part 11 compliance and strict data‑integrity standards.

Key responsibilities

• Design, develop and maintain modern web applications using ASP.NET Core and React.
• Build responsive user interfaces with JavaScript, TypeScript, HTML5 and CSS3.
• Create and integrate RESTful APIs with internal and third‑party platforms.
• Design data models and optimise performance using Entity Framework and SQL Server.
• Collaborate with product, engineering and business stakeholders to deliver high‑quality solutions.
• Participate in architecture discussions, code reviews and continuous‑improvement initiatives.
• Support CI/CD pipelines and deployment best practices.
• Improve application performance, scalability, reliability and security.
• Troubleshoot and resolve technical issues across the full stack.

Required profile

• 5+ years of professional experience developing applications in the Microsoft .NET ecosystem.
• Strong communication and collaboration abilities.
• Ability to work independently while contributing effectively within a team.
• Commitment to producing clean, maintainable and well‑documented code.

Required skills

• .NET / ASP.NET Core
• React
• JavaScript and TypeScript
• HTML5, CSS3
• SQL Server, SQLite, Entity Framework
• RESTful API design and integration
• Git and modern software development practices
• CI/CD processes

What we offer

• Stability and resources of a profitable private‑equity backed organisation.
• Exposure to global customers in highly regulated life‑sciences industries.
• Opportunities for career growth within an expanding international business.
• Direct impact on innovative products used by leading life‑sciences organisations.
• A culture that values initiative, ownership and continuous improvement.