Software Test Automation Engineer

3M; Minnesota; On-site; USD 146,000 - 178,000; Full time

Job summary

3M is seeking a Senior Software Test Automation Engineer to design, code, and maintain automated tests for server-side components and APIs. You will develop reusable automation frameworks, ensure secure communications, and collaborate with cross-functional teams to improve performance and reliability.

Responsibilities include leading test strategies, identifying defects, and contributing to engineering best practices in a fast-paced environment at the Maplewood, MN location.

Qualifications

• Bachelor’s degree in a technical field and 7+ years of software development experience.
• Experience coding automated tests for server-side or backend software.
• Experience with APIs, services, databases, and distributed systems is a plus.
• Ability to work across a broad technology stack.

Responsibilities

• Designing, coding, and maintaining automated tests for server-side software components, APIs, services, and integrations.
• Developing and enhancing reusable automation frameworks, test utilities, mock services, and validation tools.
• Applying security best practices, including encryption and secure communications, across system design and implementation.
• Troubleshooting and optimizing software performance, reliability, and interoperability across hardware and software interfaces.
• Identifying, documenting, troubleshooting, and tracking software defects in collaboration with development teams.
• Providing technical leadership on a cross-functional team and contribute to engineering best practices appropriate for a mid-senior level role.

Skills

Automation testing

Software development

Security best practices

Technical leadership

Education

Bachelor's degree in Computer Science or related field

Master's degree in Computer Science or related field

Tools

C/C++

Embedded systems

OPC-UA

MQTT

Wi‑Fi low-latency networks

AI software development tools

Job description

Job Description

Collaborate with Innovative 3Mers Around the World

Choosing where to start and grow your career has a major impact on your professional and personal life, so it’s equally important you know that the company that you choose to work at, and its leaders, will support and guide you. With a wide variety of people, global locations, technologies and products, 3M is a place where you can collaborate with other curious, creative 3Mers.

This position provides an opportunity to transition from other private, public, government or military experience to a 3M career.

As a Senior Software Test Automation Engineer, You Will Have The Opportunity To Tap Into Your Curiosity And Collaborate With Some Of The Most Innovative People Around The World. Here, You Will Make An Impact By

The Impact You’ll Make in this Role

• Designing, coding, and maintaining automated tests for server-side software components, APIs, services, and integrations.
• Developing and enhancing reusable automation frameworks, test utilities, mock services, and validation tools.
• Appling security best practices, including encryption and secure communications, across system design and implementation.
• Troubleshooting and optimizing software performance, reliability, and interoperability across hardware and software interfaces.
• Identifying, documenting, troubleshooting, and tracking software defects in collaboration with development teams.
• Providing technical leadership on a cross-functional team and contribute to engineering best practices appropriate for a mid-senior level role.

Your Skills And Expertise

To set you up for success in this role from day one, 3M requires (at a minimum) the following qualifications:

• Bachelor’s degree or higher in Computer Science, Software Engineering, Computer Engineering, Information Technology, Electrical Engineering or a related technical field (completed and verified prior to start) from an accredited institution.
• Seven (7) years of software development experience including coding automated tests for server-side or backend software systems in a private, public, government or military environment

Additional qualifications that could help you succeed even further in this role include

• Master’s degree in Computer Science, Software Engineering, Computer Engineering, Information Technology, Electrical Engineering or a related technical field (completed and verified prior to start) from an accredited institution.
• Experience testing APIs, services, databases, and distributed software systems.
• Have a working knowledge of industrial automation protocols such as CIP, OPC-UA, and MQTT.
• Experience with C/C++ and embedded applications.
• Understanding of low-latency, time-critical network communications over Wi-Fi
• Ability to work effectively across a broad technology stack and to coordinate with external development resources.
• Proficiency with AI software development tools

Work location

• Work location: This role follows an on-site working model, requiring the employee to work at least four days a week at the 3M Center in Maplewood, MN.
• Travel: May include up to 10% domestic or international
• Relocation: May be authorized

Must be legally authorized to work in country of employment without sponsorship for employment visa status (e.g., H1B status).

Supporting Your Well-being

3M offers many programs to help you live your best life – both physically and financially. To ensure competitive pay and benefits, 3M regularly benchmarks with other companies that are comparable in size and scope.

Applicable to US Applicants Only: The expected compensation range for this position is $145,676 - $178,049, which includes base pay plus variable incentive pay, if eligible. This range represents a good faith estimate for this position. The specific compensation offered to a candidate may vary based on factors including, but not limited to, the candidate’s relevant knowledge, training, skills, work location, and/or experience. In addition, this position may be eligible for a range of benefits (e.g., Medical, Dental & Vision, Health Savings Accounts, Health Care & Dependent Care Flexible Spending Accounts, Disability Benefits, Life Insurance, Voluntary Benefits, Paid Absences and Retirement Benefits, etc.). Additional information is available at: https://www.3m.com/3M/en_US/careers-us/working-at-3m/benefits/.

Good Faith Posting Date Range 08/13/2026 To 09/12/2026 Or until filled

All US-based 3M full time employees will need to sign an employee agreement as a condition of employment with 3M. This agreement lays out key terms on using 3M Confidential Information and Trade Secrets. It also has provisions discussing conflicts of interest and how inventions are assigned. Employees that are Job Grade 7 or equivalent and above may also have obligations to not compete against 3M or solicit its employees or customers, both during their employment, and for a period after they leave 3M.

Learn more about 3M’s creative solutions to the world’s problems at www.3M.com or on Instagram, Facebook, and LinkedIn @3M.

Responsibilities of this position include that corporate policies, procedures and security standards are complied with while performing assigned duties.

Safety is a core value at 3M. All employees are expected to contribute to a strong Environmental Health and Safety (EHS) culture by following safety policies, identifying hazards, and engaging in continuous improvement.

Pay & Benefits Overview: https://www.3m.com/3M/en_US/careers-us/working-at-3m/benefits/

3M does not discriminate in hiring or employment on the basis of race, color, sex, national origin, religion, age, disability, veteran status, or any other characteristic protected by applicable law.

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