Principal Engineer, System Verification

Coherent Corp.; Horsham (PA); On-site; USD 140,000 - 190,000; Full time

Job summary

Coherent Corp. is seeking a senior verification engineer to join the Horsham, PA team onsite.

You will design and execute comprehensive verification plans for embedded systems in optical networking, develop Python automation, and drive CI/CD for regression testing. You will mentor junior engineers, collaborate with HW/SW and system architecture teams, and ensure robust verification across SDN and network/optical features.

Qualifications

• 8+ years in embedded systems software verification.
• 5+ years in Optical Networking industry (L0/L1).
• Automation of northbound interface testing: Netconf/YANG, Restconf, CLI, SNMP.
• Testing Linux based embedded systems.
• Python or other scripting language for automation testing.
• Proficient in TCP/IP, Ethernet, OSPF, BGP, LLDP, RSTP.
• Experience with DWDM optics: EDFA, WSS, OSC, OCM, OTDR.
• Familiar with Agile, CI/CD, and DevOps practices.

Responsibilities

• Discuss and review system requirement documents with cross-functional teams.
• Design and develop test plans and traceability matrices to system requirements.
• Establish verification practices for a new team and align with existing processes.
• Validate management interface tests over Netconf, CLI and gRPC interfaces.
• Conduct black box testing across SDN and optical features (OSPF, BGP, LLDP, EDFA, WSS, OTDR).
• Develop Python automation scripts and implement CI/CD pipelines for regression testing.
• Create test summary reports and maintain test case repository.
• Maintain daily sanity tests and run regression tests for software/hardware upgrades.
• Design new test cases from customer feedback and retest fixes.

Skills

Networking data modeling

English communication

Independent work

Teamwork

Agile/DevOps mindset

Self-motivation

Education

Electrical Engineering or Computer Science

Tools

Python scripting

VS Code

Netconf/YANG

CLI

SNMP

Job description

Primary Duties & Responsibilities

• Discuss and review system requirement documents. Collaborate with cross-functional teams to analyze system specifications and technical requirements.
• Design and develop comprehensive test plans covering functional, performance, and boundary scenarios. Create traceability matrices aligning test cases with system requirements.
• Establish best verification practices for a new team, consistent with existing practices and tools used by team.
• Validate management interface by testing optical provisioning, alarm, telemetry and software upgrade features over Netconf, CLI and gRPC interfaces. Familiar with SNMP and Rest interfaces.
• Conduct black box testing vertically from SDN based network controller or network element to validate system features, networking functionalities including OSPF, BGP and LLDP, optical system features including EDFA/RAMAN amplifiers, OSC, WSS, OCM and OTDR and OTN features.
• Develop/maintain Python-based automation scripts. Implement CI/CD pipelines for regression testing using Jenkins/Gitlab. Improve test automation coverage using industry’s best standard methods.
• Create test summary report for each release and maintain test case repository.
• Maintain daily sanity tests and run regression tests in each software load. Perform regression testing for software/hardware upgrades.
• Design new test cases based on customer findings or new feature requests. Retest bug fixes and other sustaining issues from legacy products.

Teamwork and Support

• Mentoring/Coaching junior verification engineers. Drive automation script reviews and practices across team.
• Collaborate with HW/SW development and system architecture teams to continuously improve product performance, execution efficiency, and development processes.

Education & Experience

• University degree in Electrical Engineering or Computer Science.
• 8+ years of experience in embedded systems software verification.
• 5+ years of experience in Optical Networking industry (L0 and/or L1 equipment).
• Experience in automation of northbound interface testing: Netconf/YANG, Restconf, CLI, SNMP.
• Experience in testing Linux based embedded systems.
• Experience in Python or other script language for automation test.
• Experience in network protocols such as TCP/IP, Ethernet, OSPF, BGP, LLDP, RSTP.
• Experience with DWDM optical systems, familiar with EDFA, WSS, OSC, OCM and OTDR.
• Familiarity with Transponder product, familiar with OTN, 100G, 400G, 800G.
• Practical experience across the entire Agile development lifecycle, including continuous integration, continuous deployment (CI/CD), and collaboration through DevOps practices.
• Familiarity with 3rd party test devices and automation to support complete system testing.

Skills

• Familiar with networking data modeling (Open Config, Yang models etc.) and security protocols.
• Experience in optical networking (ROADM, ILA, OTN) system level features.
• Good written and oral communication skills in English. Experience in cross-site development with global teams.
• Programming languages: Python. Familiar with VS Code environment.
• The ability to work independently with guidance from supervisor on specific tasks.
• Able to work and execute on an aggressive schedule.
• Self-starter, highly motivated, dedicated and teamwork oriented.

Working Conditions

• This position is onsite at Horsham, PA location.
• May require occasional off‑site meetings or travel.
• Regular use of a computer and other office equipment is necessary.
• Interaction with team members and external contacts is a regular part of the job.
• May require occasional overtime and flexibility in work hours to accommodate the executive’s needs.

Physical Requirements

• Sitting for extended periods while working on a computer or conducting meetings.
• Use of hands and fingers for typing, writing, and handling documents.
• Occasional lifting of objects or materials up to 20 pounds for administrative tasks.
• Ability to communicate verbally and in writing.
• Mobility within the office environment to attend meetings or interact with colleagues.

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Integrity – Create an Environment of Trust
Collaboration – Innovate Through the Sharing of Ideas
Accountability – Own the Process and the Outcome
Respect – Recognize the Value in Everyone
Enthusiasm – Find a Sense of Purpose in Work

Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

If you need assistance or an accommodation due to a disability, you may contact us at [e-mail].