Senior Software Engineer (.Net)

Who We Are

Blue Mountain builds the asset management and calibration software that life sciences manufacturers rely on to keep equipment validated, compliant, and inspection-ready. That puts real engineering constraints on the work: electronic records and signatures that hold up under 21 CFR Part 11, audit trails that survive an FDA inspection, and data integrity you can't get wrong. Operating in a regulated environment isn’t a “nice to have”—it’s essential to the complexity, impact, and value of what you’ll build.

We're now in our most ambitious chapter yet. Backed by a strategic investment from Five Arrows — the private equity arm of Rothschild & Co — and the recent acquisition of CompuCal, a key step in our Europe expansion, we're accelerating investment in the platform and the team building it. You'd join at a moment with meaningful opportunity to shape what comes next.

What You'll Do

As a Senior Software Engineer (.Net), you'll play a key role in designing, building, and enhancing the software solutions that power critical operations for global customers.

• Design, develop, and maintain modern web applications using ASP.NET Core and React
• Build responsive, user-focused interfaces using JavaScript, TypeScript, HTML5, and CSS3
• Develop and integrate RESTful APIs with internal and third-party platforms
• Design data models and optimize database 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 processes and deployment best practices
• Improve application performance, scalability, reliability, and security
• Troubleshoot and resolve technical issues across the application stack

What You Bring

• 5+ years of professional experience developing applications within the Microsoft .NET ecosystem
• Strong experience with ASP.NET Core and React
• Proficiency in JavaScript and TypeScript
• Solid understanding of HTML5, CSS3, and responsive web development
• Experience working with SQL Server, SQLite, Entity Framework, and database optimization
• Strong knowledge of RESTful API design and integration
• Experience deploying and supporting web applications in production environments
• Familiarity with Git and modern software development practices
• Strong communication and collaboration abilities
• Ability to work independently while contributing effectively within a team environment
• Commitment to producing clean, maintainable, and well-documented code

What You'll Get

• The stability and resources of a profitable private equity-backed organization
• Exposure to global customers across highly regulated industries
• The opportunity to help shape products used by leading life sciences organizations
• Career growth opportunities within an expanding international business
• Direct impact on innovation and company success
• A culture that values initiative, ownership, and continuous improvement

Why Join Now?

This is a role with real ownership. You'll take on hard problems in a domain where correctness actually matters, make technical decisions that shape the platform, and work alongside engineers and regulatory experts who know this space deeply.

You do your best work when the problem is genuinely hard and the stakes are real. Our customers make the medicines, therapies, and devices patients depend on every day — which is exactly why the software has to be right.

If that's the kind of work you're looking for, let's talk. Join Blue Mountain and help build the system life sciences manufacturers trust to stay compliant.

Data Privacy

By applying for this role, you acknowledge that Blue Mountain Quality Resources will collect and process your personal data for the purposes of evaluating your application. Your data will be handled in accordance with our Candidate Privacy Notice, which is available upon request. If you have any questions about how your data is used, please contact [email protected]