Software Engineering Intern

Who We Are

Stored Energy Systems (SENS) is an award-winning manufacturer of premium quality power conversion products located in Longmont, CO. In business for over 50 years, SENS is the market leader with a proven track record of providing highly reliable battery chargers, DC power systems, and related products to industrial markets. For more information on our company please see our web site at www.sens-usa.com.

View the SENS Product Catalog

Summary

SENS is seeking a Software Engineering Intern to develop automated tests in C# for SENS hardware. You will work alongside experienced engineers to verify product functionality, expand repeatable test coverage, and help identify hardware and firmware issues in our battery chargers, DC power systems, and related products.

Responsibilities

• Write, debug, and maintain C# automated tests within the SENS test framework for hardware and firmware verification.
• Work with engineers to turn product requirements and test procedures into repeatable tests with clear pass/fail criteria.
• Develop test code that communicates with SENS hardware and laboratory instruments to configure equipment, control test sequences, and collect measurements.
• Record test results, measurements, and diagnostic information to support troubleshooting and test reports.
• Run automated tests, investigate failures, and work with electrical, firmware, and software engineers to reproduce and document issues.
• Use version control and code reviews to maintain readable, reusable test code and document test setup and operation.
• Assist with test fixtures and lab setup, following established electrical safety procedures and working under engineering supervision.

Required Qualifications

• Currently pursuing a degree in Electrical Engineering, Software Engineering, Computer Engineering, Computer Science, or a related field.
• Programming experience through coursework or projects; familiarity with an object-oriented programming language is preferred.
• Interest in testing physical hardware and learning basic electrical measurements, device communication, and troubleshooting.
• Careful attention to detail, a methodical approach to problem solving, and the ability to communicate clearly and work with other engineers.
• Available to work 10–20 hours per week during the school year.

Preferred Qualifications

• Experience with .NET, C#, Visual Studio, Git, automated testing, or lab instruments.
• Familiarity with CAN, serial, USB, or Ethernet communication.
• Object-oriented analysis and design.

Closing Date

November 2nd. While we anticipate keeping this position open through this date, the posting may be extended or closed earlier depending on applicant volume and hiring needs.

Compensation

$25 per hour.

Location

Longmont, CO

Onsite Perks

• Free gym with 24/7 access
• Free Electric Vehicle charging
• Breakfast and Lunch Café
• After hours Grab & Go snacks
• Basketball court
• Walking paths

At SENS, our culture is rooted in a set of core values that reflect who we are and how we work. In a recent 2025 poll, our employees identified the values that best define us: “Innovative”, “Respectful”, “Inviting”, “Flexible”, “Collaborative”, and “Growth Driven”. Our team describes us as a dynamic, forward-thinking company where everyone has the opportunity to thrive.

We pride ourselves on being an equal opportunity employer, fully dedicated to fostering inclusion and diversity. We welcome all applicants, regardless of race, color, religion, sex, sexual orientation, gender identity, genetic information, national origin, age, disability, veteran status, or any other legally protected characteristic.

We hope you're interested in making a difference with us. Even if you don't feel that you meet every qualification listed in this job description, we still encourage you to apply.