Senior Software Engineer

Protolabs•Nashua, NH

21d•Hybrid

About The Position

ProtoLabs is a leader in digital manufacturing seeking a highly skilled Senior .NET Software Engineer to join their Global Technology Services (GTS) Software Development team. This role is responsible for designing, developing, and maintaining scalable applications that support a diverse range of users across the organization. The engineer will collaborate closely with cross-functional teams to deliver high-quality, innovative solutions that align with business needs. The company emphasizes diversity and encourages applications from individuals who may not meet every single qualification but are still interested in contributing to a better company. They are an equal opportunity employer and do not discriminate based on race, color, national origin, sexual orientation, gender, age, mental or physical ability, or any way an individual represents themselves, believing that diversity leads to more successful teams. The culture is centered around meaningful work, entrepreneurial spirit, and bringing new products to market quickly. The team is described as smart, genuine, humble, and passionate.

Requirements

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
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 assigned tasks while collaborating within a team
Demonstrated history of staying current on best practices in technology
U.S. Citizens, lawful permanent residents (green card holders) or foreign nationals granted refugee or asylee status. Individuals with temporary visas (e.g. E, F-1, H-1, H-2, L, B, J, TN or OPT) are not eligible for hire in this role.

Responsibilities

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