Senior Software Engineer

Protolabs

Senior .NET Software Engineer designing and maintaining applications for Protolabs’ digital manufacturing. Collaborating with teams to deliver high-quality, innovative solutions.

Posted 5/18/2026full-timeNashua • New Hampshire • 🇺🇸 United StatesSenior💰 $107,400 - $161,000 per yearWebsite

Tech Stack

Tools & technologies

JavaScript.NETSQL

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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 **

Benefits

Comp & perks

Health Insurance: Traditional OR High Deductible plan
Flexible Spending Accounts
Health Savings Account (including employer contributions)
Dental and Vision
Basic and Supplemental Life Insurance
Short-Term and Long-Term Disability
Paid caregiver leave
You will receive at least 3 weeks of PTO + Holiday Pay + Wellness Hours + Volunteer Hours
401k with company match and immediate vest
Employee Stock Purchase Program at a 15% discounted rate
Matching grants through Protolabs foundation
And More!

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

.NET CoreC#SQL ServerHTMLJavaScriptunit testsautomated acceptance testsAgileScrumsoftware engineering best practices

Soft Skills

strong communication skillswork ethicproblem-solvinganalytical skillsdebugging skillsability to work independentlycollaborationaccountabilitypositive attitudeability to meet commitments

Certifications

degree in Computer Sciencedegree in Software Engineering