Networks & Security Engineer
Location: Milwaukee, Wisconsin
Country: United States
Category: Other
Workplace Location: Onsite
Employment Type: Contract
Posted Date: October 13, 2026
Job ID: 652912
Job Description
Job Title: Network Security Engineer
Location: Milwaukee, WI 53204
Contract length: 12 -Month Contract
Pay: $40-44.80hr
The Network Security and Functional Test Engineer is responsible for validating the functionality, performance, reliability, and security of industrial networking solutions within Rockwell Automation's product portfolio. This role focuses on designing and executing comprehensive test strategies for Ethernet networks, identifying security vulnerabilities, developing automated testing frameworks, and troubleshooting complex networking issues across IT and OT environments. The engineer collaborates closely with software developers, product teams, and subject matter experts to improve product quality, strengthen cybersecurity, and ensure compliance with evolving technical requirements and industry best practices.
* Participate in team planning and status meetings to establish priorities, clarify task assignments, and define expected deliverables.
* Perform functional testing using commercial off-the-shelf and proprietary security tools to identify vulnerabilities through white-box, grey-box, and black-box testing methodologies.
* Analyze complex technical issues, document defects and test findings, and maintain detailed records to support troubleshooting and future resolution.
* Collaborate with software developers and cross-functional teams to investigate, analyze, and resolve identified defects and security vulnerabilities.
* Develop and maintain test cases, test scripts, and reusable test assets to address evolving product requirements and system specifications.
* Contribute to the design and implementation of automated testing strategies, frameworks, and processes.
* Apply appropriate testing methodologies, tools, and techniques to achieve comprehensive functional and security test coverage.
* Continuously improve knowledge of functional testing processes, test development practices, and emerging testing technologies.
* Consult subject matter experts to evaluate technical challenges, investigate potential solutions, and support evidence-based decision-making throughout product development.
* Establish project timelines, track assigned tasks, monitor progress, and ensure deliverables are completed within established deadlines.
* Prepare and deliver informal technical presentations to small groups on specialized networking, testing, and security topics.
* Stay current with emerging networking technologies, cybersecurity trends, and IT/OT convergence best practices.
* Evaluate new technologies and products that could enhance Rockwell Automation's portfolio while continuously developing technical expertise.
* Record, analyze, and summarize test results, ensuring findings are clearly documented and communicated to relevant stakeholders.
Minimum Qualifications* Bachelor's degree in Computer Engineering, Computer Science, or Electrical Engineering with a concentration in Computer Science.
* At least three years of professional experience in software testing, software development, or a related technical field.
* Strong understanding of computer networking fundamentals, network architectures, and communication protocols.
* Hands-on experience designing, implementing, configuring, and troubleshooting network infrastructures.
* Advanced technical expertise in complex networking solutions, implementation strategies, and IT/OT convergence.
* Practical experience testing Ethernet networks and designing network test environments.
* Knowledge of networking protocols and technologies, including STP, VLANs, DTP, VTP, IGMP, RIP, OSPF, EIGRP, HSRP, VRRP, Flex Links, ACLs, DLR, PRP, HSR, and MRP.
* Familiarity with cybersecurity concepts, security testing protocols, fuzzing tools, vulnerability assessment, and Product Security Incident Response Team (PSIRT) processes.
* Experience working with Cisco Industrial Ethernet (IE) switches, Rockwell Automation Stratix switches, and network routers.
* Hands-on experience with automated testing frameworks and test execution processes.
* Knowledge of industrial control systems and industrial networking environments.
* Strong written and verbal communication skills in English.
Preferred Qualifications* Experience with network management platforms, diagnostic tools, and network troubleshooting utilities.
* Proficiency in programming and scripting languages, particularly Python, for test automation and analysis.
* Experience in software engineering, product development, or product validation.
* ISTQB Foundation Level certification or equivalent software testing qualification.
* Experience with Rockwell Automation industrial control products and networking solutions.
EEO Statement
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The Planet Group and our companies are equal opportunity employers. It is our practice not to discriminate against any employee or applicant based on any criteria, condition or basis protected by laws or regulations in the locations where we do business. All qualified applicants are encouraged to apply. We celebrate diversity and are committed to providing an environment of mutual respect. We believe that diversity, equity, and inclusion enable us to better meet our mission and values while serving our clients across the globe. If you have a disability or handicap and would like us to accommodate you in any reasonable way, please inform your recruiter, or contact us, so that we can discuss the appropriate alternatives available.
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About The Planet Group
The Planet Group is a global professional services firm delivering strategic staffing and advisory solutions. We operate at the intersection of talent and transformation – connecting the right people with the right opportunities in the areas of technology, engineering, accounting & finance, digital marketing, and manufacturing.
As one of the largest staffing companies in the US, we operate with a global reach and a performance-first mindset. We partner with clients to move fast, stay agile, and drive measurable results – building high-impact teams that fuel transformation and growth.
