Senior Software Engineer

Be yourself at Protolabs Studies have shown that women and people of color are less likely to apply to jobs unless they meet every single qualification.  We are an equal opportunity employer, and we are committed to building a diverse team that feels they are valued in the workplace.  So do you feel you do not meet every single requirement but still intrigued? We encourage you to still apply!  You can help make our company even better.  We do not discriminate based on race, color, national origin, sexual orientation, gender, age, mental or physical ability, or any way you represent yourself.  We strongly believe diversity makes for more successful teams. Why Protolabs? We are the leaders in digital manufacturing. We hire doers, makers, and creative thinkers who tackle our roles with an entrepreneurial spirit. Our culture is centered around meaningful work that brings new and innovative products to market at unprecedented speeds. We are a diverse team that comes from all walks of life and take pride in our team who is smart, genuine, humble, and passionate about what we do. It’s our people who fuel our creativity and make our culture feel like home. Join our team as a Senior Software Engineer Engineer! This is a fixed hybrid role on-site Tuesday, Wednesday, Thursday in Nashua NH We are seeking a highly skilled Senior .NET Software Engineer to join our Global Technology Services (GTS) Software Development team. In this role, you will be responsible for designing, developing, and maintaining scalable applications that support a diverse range of users across the organization. You will collaborate closely with cross-functional teams to deliver high-quality, innovative solutions that align with business needs. What You'll Do Design, develop, and maintain software applications used across Protolabs’ digital manufacturing and commerce platforms Build and enhance features using .NET Core, C#, web services, and SQL Server Utilize AI tools for software development such as Cursor, Claude or Co-pilot Design, implement, debug, and deliver high quality software Participate in requirements gathering, system design discussions, design reviews, and code reviews Create and maintain unit tests and automated acceptance tests to ensure software quality and reliability Debug and resolve production issues across functional and technical areas Work from established system designs and specifications using standard development tools, procedures, and best practices Collaborate effectively with architects, other engineers, product partners, and cross functional teams Provide technical input and assistance to less experienced engineers when appropriate Communicate development progress, risks, and support needs to team members and management Follow software engineering best practices and contribute to system resilience, performance, and maintainability Stay current on relevant technologies, frameworks, and industry best practices Participate in 24x7 on-call rotation in support of global software systems Perform other duties as assigned What It Takes Education and Experience: A degree in Computer Science, Software Engineering, or related field 5+ years of professional software development experience (or equivalent demonstrated capability) Proficient in C#, Visual Studio, MS-SQL, HTML, JavaScript .NET development work experience Experience developing, maintaining, and supporting production software systems Experience with multiple .NET patterns and platform technologies like client/server, ASP .NET sites, web services, WCF endpoints, SOA, or MVC Experience using version control systems in a team environment Knowledge , Skills, And Abilities Strong communication skills and work ethic Solid understanding of core software engineering concepts, design principles, and development practices Familiarity with Agile/Scrum development methodologies Demonstrated accountability, positive attitude, and ability to meet commitments Strong problem-solving, analytical, and debugging skills Ability to work independently on as