Senior Network Engineer

SEARGIN IS HIRING!

As a dynamic multinational tech company operating in 50 countries, we drive innovation and create projects that shape the future and greatly enhance the quality of life. You will find our solutions in the space industry, supporting scientists in the development of cancer drugs, and implementing innovative technological solutions for industrial clients worldwide. These are just some of the areas in which we operate!

Currently, for the new Seargin project we are looking for Senior Network Engineer.

Location: Hybrid from Katowice

Employment Type: B2B

FTE: Full-time

Requirements:

• Bachelor’s degree in Computer Engineering, Computer Science, Electrical Engineering, Telecommunications, or a related technical field.
• At least 5 years’ experience with industrial networking hardware, especially Cisco IE / Stratix switches and routers.
• Expert-level technical background in High-complexity Networking solutions and implementation strategies and understanding of IT and OT convergence
• Strong understanding of industrial Ethernet technologies, including STP/RSTP/MSTP, DLR, VLANs, routing fundamentals, and redundancy mechanisms (e.g., PRP, HSR, REP).
• Deep understanding of Ethernet networking protocols and their operation.
• Ability to build, configure, and maintain industrial Ethernet test environments, including network topologies, traffic generation, and diagnostic setups.
• Proficiency with network management and diagnostic tools such as Wireshark, packet analyzers, traffic generators, and industrial network monitoring software.
• Experience implementing and troubleshooting IT/OT converged network solutions, including segmentation, security, and interoperability considerations.
• Strong analytical and troubleshooting skills for diagnosing network behavior, firmware issues, and communication faults.
• Ability to create clear test plans, test cases, and defect reports, and maintain accurate test documentation.
• Solid understanding of verification and validation practices, quality processes, and defect tracking systems.
• Excellent written and spoken English communication skills, with the ability to collaborate effectively across engineering teams.
• Commitment to continuous learning, staying current with networking technologies, industrial automation trends, and testing methodologies

Responsibilities:

• Design, develop, and execute comprehensive tests for industrial communication products, including Ethernet switches, network modules, and embedded communication interfaces.
• Create, maintain, and evolve test environments, including network topologies, hardware setups, and automated test frameworks tailored to communication centric devices.
• Troubleshoot complex network setups, including switch configurations, routing behavior, VLANs, redundancy protocols, and industrial network technologies (e.g., DLR, PRP, CIP, EtherNet/IP).
• Be a primary technical owner for escalated customer issues involving industrial networking technologies, industrial Ethernet, fieldbus systems, and OT/IT integration.
• Reproduce customer reported issues in industrial automation lab environments to validate findings and accelerate engineering analysis.
• Develop and execute functional, performance, stress, and interoperability tests using white box, grey box, and black box methodologies.
• Analyze test outcomes, identify anomalies, and document defects with clear reproduction steps and technical insights.
• Collaborate closely with firmware, hardware, and network engineers to investigate issues, validate fixes, and ensure robust product behavior under real world industrial conditions.
• Ensure thorough verification and validation coverage, contributing to product reliability, compliance, and adherence to quality standards.
• Develop new test cases and test assets as product features evolve, ensuring coverage of new communication protocols, firmware capabilities, and system interactions.
• Use specialized tools and analyzers (e.g., packet sniffers, protocol analyzers, traffic generators) to validate network behavior and diagnose communication issues.
• Participate in planning, estimation, and status discussions, helping define priorities, timelines, and deliverables for test activities.
• Continuously expand knowledge of networking technologies, industrial automation standards, and modern testing methodologies.
• Provide expert guidance to support teams, field service engineers, and customers during high severity incidents affecting production or safety critical systems.
• Monitor emerging IT/OT trends and new communication technologies, evaluating their relevance to Rockwell’s product ecosystem.
• Maintain accurate test documentation, including test plans, procedures, results summaries, and defect reports.
• Engage with subject matter experts to validate assumptions, explore solutions, and ensure evidence based decision making throughout development.
• Support long term test strategy improvements, including better automation coverage, improved test infrastructure, and enhanced diagnostic capabilities.

Discover the Power of IT Excellence. Apply!

To learn more about Seargin, please visit our web page: www.seargin.com