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Infosoft, Inc. • Chicago, Illinois, United States
Role & seniority: Industrial Automation Test Engineer (mid-level)
Stack/tools: Siemens PLC (S7-1200/1500), LAD/SCL, PLC programming; industrial safety (Failsafe PLCs, Profisafe); OPC UA, PROFINET, HMI; test automation basics, scripting, CI/CD; C# (plus), NUnit/MSTest, Git/TFS
Perform system-wide and product-level testing of PLCs, safety systems, and automation software; validate end-to-end behavior
Investigate, reproduce, and document customer-reported issues; support root-cause analysis
Develop, execute, and maintain test procedures, collaborate across engineering/quality teams; support test process improvements
BS/MS in engineering, software or related field
Experience with system/integration/validation testing in industrial automation
Proficiency with Siemens S7-1200/1500 or similar PLCs; LAD/SCL knowledge preferred
Knowledge of industrial networks/protocols (OPC UA, PROFINET), HMI, industrial safety concepts
Familiarity with test automation basics, scripting, and CI/CD; strong problem-solving and communication
Experience with Profisafe, failsafe safety systems; ISTQB/ASTQB certification
C# or similar programming language; NUnit/MSTest, source control (Git, TFS)
Forward deployment experience, OT/IT integration, cybersecurity/testing standards
Location & work type: Chicago, IL; 12-month contract; limited domestic/international travel (~5%); likely on-site with
Job Title: Industrial Automation Test Engineer
Pay Rate: $40 to $45/Hr
Duration: 12 months
Location: Chicago, IL
We are seeking an Industrial Automation Test Engineer to support the system-level and product-level testing of industrial automation solutions, including Programmable Logic Controllers (PLCs), expansion modules, safety controllers, and automation software. In this role, you will validate that automation products perform reliably in real-world customer environments. You will execute system-wide test scenarios, investigate customer-reported issues, and collaborate closely with development, hardware, and safety teams to ensure high-quality, robust automation products. Perform system-wide and product-oriented testing of industrial automation products such as PLCs, expansion modules, and automation software Execute test cases based on real customer use scenarios, including end-to-end system behavior Validate PLC functionality, performance, and reliability across hardware, firmware, and software components Test and verify industrial safety systems, including failsafe PLCs and safety communication Investigate and reproduce customer-reported issues, support root cause analysis, and document findings Validate industrial communication protocols and interfaces (PLC-PLC, PLC-HMI, PLC-network) Develop, execute, and maintain test procedures, test cases, and test documentation Collaborate with engineering, product development, and quality teams throughout the product lifecycle Support continuous improvement of test processes and test coverage
Experience with forward deployment engineering: embedding with customer teams, validating systems in live environments, and iterating test strategies based on field feedback. Knowledge of industrial automation systems, OT/IT integration, and compliance frameworks. Familiarity with cybersecurity standards and safety-critical testing. Willingness to travel or co-locate with customer teams during critical deployment phases. Demonstrated ability to bridge the gap between lab validation and real-world deployment for scalable, reliable adoption. ISTQB/ASTQB certificate