Protolabs Jobs

Senior Software Engineer

Protolabs

Senior Software Engineer

Reposted 3 Days Ago

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Nashua, NH, USA

Hybrid

107K-161K Annually

Senior level

3D Printing • Other

The Role

The Senior Software Engineer will design, develop, and maintain scalable applications using .NET technologies, collaborate across teams, and contribute to software quality through testing and best practices.

Summary Generated by Built In

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 assigned tasks while collaborating within a team

Demonstrated history of staying current on best practices in technology

What's In It For You?

We offer a competitive salary and annual bonus opportunity

In addition, we offer amazing benefits including but not limited to:

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!

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.

Skills Required

A degree in Computer Science, Software Engineering, or related field
5+ years of professional software development experience
Proficient in C#, Visual Studio, MS-SQL, HTML, JavaScript
Experience with .NET development
Experience with multiple .NET patterns and platform technologies
Experience using version control systems in a team environment

Protolabs Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Protolabs and has not been reviewed or approved by Protolabs.

Healthcare Strength — Medical, dental, and vision options are broadly available and described as good to excellent. Additional protections like short- and long-term disability and life insurance bolster the overall package.
Leave & Time Off Breadth — A starting PTO allotment plus paid holidays, along with added wellness and volunteer time, is emphasized, with some roles noting PTO growth over tenure. Paid caregiver leave appears in postings and supports flexibility for life events.
Retirement Support — A 401(k) with company match and immediate vesting is offered, supporting long-term savings. This foundation is frequently cited alongside core financial benefits as a strong element of total rewards.

Learn more about Protolabs's Compensation & Benefits →

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The Company

HQ: Maple Plain, MN

1,085 Employees

What We Do

Protolabs is the world's fastest digital manufacturing source for rapid prototyping and on-demand production. The technology-enabled company produces custom parts and assemblies in as fast as 1 day with automated 3D printing, CNC machining, sheet metal fabrication, and injection molding processes. Our digital approach to manufacturing enables accelerated time to market, reduces development and production costs, and minimizes risk throughout the product life cycle. 3D Printing Our 3D printing service offers a wide selection of materials and technologies to create prototypes and end-use parts with complex geometries and detailed features. With tight process controls, careful design reviews, and extensive quality monitoring, we ensure precise and repeatable 3D-printed parts, every time. CNC Machining We use 3- and 5-axis milling along with turning to machine parts from commercial-grade plastics and metals. Our online quoting system and automated manufacturing process enable us to ship parts within 24 hours, helping customers accelerate development and reduce time to market. Sheet Metal Fabrication Protolabs is an industry leader in quick-turn sheet metal parts for both prototyping and low-volume production. Our digital approach to manufacturing enables us to fabricate sheet metal parts in as fast as 5 days. Additionally, we can support our customers’ development efforts with component assemblies, several finish options, and screen printing. Injection Molding Our injection molding service offers two options—prototyping and on-demand manufacturing—which provide customers a tooling solution that aligns with their project’s requirements. It’s used for quick-turn prototyping, bridge tooling, and low-volume production of up to 10,000+ parts in 15 days or less.