Sr. Software EngineerCatalog Domain

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 Sr. Software Engineer—Catalog Domain!

This is a fixed hybrid role on-site Tuesday, Wednesday, Thursday at HQ in Maple Plain MN

The Senior Software Engineer, Catalog Domain is responsible for building and maintaining critical services within a service-oriented architecture that powers Protolabs’ digital manufacturing offerings. In this role, you will design and deliver scalable backend systems that connect commerce, pricing, sourcing, and engineering platforms to create a seamless and dynamic customer experience.

You’ll help bring manufacturing solutions to life by enabling comprehensive, real-time offers for 3D printing, injection molding, CNC machining, and sheet metal fabrication. This role is ideal for an experienced engineer who enjoys solving complex integration challenges, building reliable services at scale, and working on software that directly impacts how customers design, quote, and manufacture parts. 

What You'll Do

•   Design, deliver and maintain features end to end, working closely with stakeholders to solve complex problems


• Build front and backend systems that integrate disparate services into a unified customer facing offer


• Mentor junior engineers, coordinate cross-team initiatives and clearly communicate complex ideas


• Improve quality by writing clear, efficient, testable code and participating in constructive code reviews


• Participate in an off-hours support rotation once every 6 weeks


• Improve the technical foundations of our platform and raise the bar within our team.  


• Be a proactive, collaborative and conscientious self-starter who doesn’t shy away from a challenge.

What It Takes

Education and Experience:

• 5+ years of experience building web applications and backend services


• Strong proficiency in C#, Javascript and MSSQL for designing, developing, testing and monitoring production systems


• Experience with relational databases, especially Microsoft SQL Server


• Experience with Docker, Kubernetes, and CI/CD environments


• Track record of robust feature implementation and successful feature delivery


• Experience working in an agile team with product managers and quality engineers


• Excellent communication and collaboration skills


• Architecture: Service-oriented/Microservices


• Backend: Microsoft .NET 10, C#, Entity Framework, MVC, Azure Service Bus


• Frontend: HTML, Vue.js, TypeScript, CSS, SASS


• DevOps: Docker, Rancher, Kubernetes, ADO, Azure Repos


• Data: Microsoft SQL Server, Redis  

  Knowledge, Skills, and Abilities:

• Strong problem-solving and debugging skills


• Expertise in developing high-quality software


• Understand software architecture/SOLID principles


• Experience in Microsoft ‑ based technology environments


• Experience in API design and integration


• Experience in system design and scalability


• Understand and have experience using version control systems


• Ability to collaborate effectively across engineering, analytics, and business teams


• Excellent work ethic, positive attitude, and strong sense of urgency


• Familiarity with Vue.js  

$107,400 - $161,000 a year

Proto Labs maintains ITAR-compliant operations in all of our United States based facilities. Due to ITAR regulations, this role is only open to 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.

Proto Labs, Inc. is an Equal Opportunity Employer

Physical Demands:

While performing the essential duties of this job, the employee is regularly required to sit; use a computer keyboard, monitor and mouse, telephone and printer; reach with hands, and arms, talk, see and hear. The employee is occasionally required to stand, walk, stoop or kneel and must occasionally lift and/or move up to 25 pounds.

Work Environment:

Indoors (A/C); nonsmoking; the majority of this job function is performed in an office setting requiring normal safety precautions. However, there may be job duties that require the employee to spend time in the manufacturing areas exposed to machinery and noise; eye protection occasionally required. Occasionally works in outside weather conditions. Occasionally works near moving mechanical parts and in high, precarious places and is occasionally exposed to wet and/or humid conditions, fumes or airborne particles, toxic or caustic chemicals, risk of electrical shock and vibration. The noise level in the work environment is usually quiet to moderate.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.