Senior Test Automation Engineer - Backend & APIs

3M; Maplewood (MN); On-site; USD 146,000 - 178,000; Full time

Job summary

3M is seeking a mid-senior level software test engineer to design, code, and maintain automated tests for server-side components and APIs. You will develop reusable automation frameworks and validation tools, and ensure security is integrated across design and implementation.

The role involves troubleshooting across hardware and software interfaces and collaborating with cross-functional teams. Required are a bachelor’s degree (or higher) in a technical field and 7+ years of software development

Qualifications

• Bachelor's degree or higher in Computer Science, Software Engineering, Computer Engineering, Information Technology, Electrical Engineering or related field (completed and verified).
• Seven (7) years of software development experience including coding automated tests for server-side or backend systems.
• Master's degree in Computer Science, Software Engineering, Computer Engineering, Information Technology, Electrical Engineering or related field (completed and verified).
• Experience testing APIs, services, databases, and distributed software systems.
• 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 coordinate with external development resources.

Responsibilities

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

Skills

C/C++

Embedded applications

APIs testing

AI software development tools

Security best practices

Low-latency networking

Cross-team collaboration

Education

Bachelor's degree

Master's degree

Tools

OPC-UA

CIP

MQTT

Job description

3M is seeking a mid-senior level software test engineer to design, code, and maintain automated tests for server-side components and APIs. You will develop reusable automation frameworks and validation tools, and ensure security is integrated across design and implementation.

The role involves troubleshooting across hardware and software interfaces and collaborating with cross-functional teams. Required are a bachelor’s degree (or higher) in a technical field and 7+ years of software development