Sr Software Test Engineer, Robotics

Tennant Company•Golden Valley, MN

About The Position

The Senior Software Test Engineer advances verification, validation, and quality for embedded software and autonomous robotic systems used on Tennant cleaning equipment. This hands-on technical role develops scalable automated test solutions, test infrastructure, and verification strategies that build confidence in software maturity throughout the product development lifecycle. The engineer collaborates with Software, Systems, Controls, Electrical, Machine Integration, and Test Engineering teams to verify embedded software, integrated electro-mechanical systems, machine behaviors, communications, safety functions, and machine-level performance.

Requirements

Bachelor’s degree in Software Engineering, Computer Engineering, Electrical Engineering, Computer Science, Robotics Engineering, or a related discipline.
At least 6 years of experience in software testing, test automation, verification, integration, or embedded systems development.
Experience developing and maintaining automated system-level HIL test platforms, simulation environments, fault-injection frameworks, and CI/CD-integrated automated test solutions for complex embedded or electromechanical systems.
Strong C# programming, test scripting, debugging, and software design skills.
Experience testing embedded software and integrated hardware/software systems.
Experience with CAN and CANopen communication networks, including configuration, monitoring, diagnostics, fault analysis, and validation of communications between embedded controllers, motor drives, sensors, actuators, and test systems.
Hands-on electrical aptitude and practical experience building, wiring, instrumenting, and debugging test fixtures for software-controlled electromechanical systems using schematics, diagnostic tools, sensors, actuators, controllers, and communication interfaces.
Experience with source control, defect management, and workflow tools such as Bitbucket, Azure DevOps, and Jira.

Nice To Haves

Experience with autonomous mobile robots, industrial robotics, mobile equipment, or vehicle control systems.
Experience developing, debugging, and maintaining C#/.NET PC-based backend applications that control test equipment, automate test execution, interface with embedded systems and instrumentation, manage test data, and generate test results.
Experience with CI/CD tools and practices, including automated builds, regression testing, test orchestration, artifact management, and quality gate enforcement.
Experience developing and executing SIL test solutions for autonomous, robotic, or embedded systems, including simulation of controllers, sensors, actuators, communication networks, and machine behaviors to validate software functionality, fault handling, and system performance before hardware integration.
Experience applying systems engineering principles to software verification of embedded or robotic products, including requirements traceability to test cases, risk-based testing, functional safety considerations, and support of product release readiness activities.
Experience implementing and scaling AI-assisted test case generation from product requirements, user stories, and production data.
Experience building workflows for automated test creation, prioritization, and gap detection using AI.

Responsibilities

Define comprehensive software test strategies covering requirements for functional, performance, reliability, fault-handling, and failure-mode scenarios in normal and abnormal operating conditions.
Translate system requirements, user stories, defect reports, and lessons learned into executable test cases, including scenarios, procedures, and acceptance criteria.
Identify test coverage gaps and develop plans to address them.
Maintain traceability among requirements, test cases, results, and defects.
Influence product and software architecture to improve testability, diagnosability, safety, and robustness.
Design, develop, and maintain automated test frameworks, test harnesses, reusable libraries, fixtures, and utilities.
Validate end-to-end integration and interoperability of software, firmware, hardware, communications networks, simulated subsystems, and machine-level functions on automated system-level HIL test platforms.
Develop and debug C# test scripts for embedded controllers, robotic behaviors, communications, fault handling, and machine functions.
Develop automated fault-injection tests and negative-test methods to evaluate software resilience, fault detection, recovery, and fail-safe behavior.
Integrate automated testing, reporting, and quality gates into CI/CD and software release workflows.
Establish metrics for test coverage, pass rates, defect trends, reliability, and release readiness.
Evaluate AI-assisted tools for test generation, coverage-gap detection, debugging, and data analysis.
Execute automated and manual tests across software configurations and product releases.
Verify fault detection, fault handling, recovery behavior, and system safety functions.
Validate communications, controller states, and machine response during abnormal operating conditions.
Analyze test data and logs to identify trends, isolate failures, and determine root causes with software developers and system engineers.
Document defects with clear evidence, reproduction steps, risk assessments, and recommended actions.
Troubleshoot issues across embedded software, networking, hardware integration, and automation systems.
Expand and execute automated regression coverage across multiple software releases.
Present testing results and quality assessments to engineering leadership and project teams.