Senior NOS Test Enginee

Req ID: 127810 
Region: Americas 
Country: United States 
State/Province: California 
City:  San Jose 

Summary

The Senior SVT QA – SONiC NOS Test Engineer role is geared toward a seasoned QA professional with 12+ years of deep, hands-on experience in testing complex Network Operating Systems (NOS) and driving quality across the software development lifecycle. The ideal candidate will bring advanced expertise in functional, system-level, and performance testing of NOS platforms, with a strong command of Layer 2/3 networking protocols such as VLAN, STP, BGP, OSPF, and EVPN-VXLAN. This role requires strategic ownership of test planning and execution, including architecting scalable automation frameworks using Python and embedding them into CI/CD pipelines. Additional responsibilities include designing real-world test topologies, leading interoperability and failover testing, and collaborating with cross-functional engineering teams. Proficiency with tools such as Ixia and Spirent is essential, and familiarity with GenAI technologies is a plus. A proven track record of technical leadership, effective communication, and relevant certifications (e.g., CCNP, JNCIP) is highly valued, along with an advanced degree in Computer Science, Electronics, or a related field.

Knowledge/Skills/Competencies

• Strong understanding of Network Operating Systems (NOS), particularly SONiC

• Expertise in functional, integration, regression, and performance testing

• Proficient in Layer 2/3 networking protocols (e.g., VLAN, BGP, OSPF, EVPN-VXLAN)

• Skilled in designing and executing complex test strategies and test plans

• Hands-on experience with test automation using Python and integration with CI/CD pipelines

• Familiarity with network traffic generators such as Ixia and Spirent

• Experience with system-level testing for stability, scalability, high availability, and fault tolerance

• Ability to build and manage test topologies for real-world simulation and interoperability testing

• Strong analytical and troubleshooting skills with detailed bug reporting

• Excellent communication and collaboration skills

• Passion for continuous learning and technical skill development

• Relevant certifications (e.g., CCNA, JNCIP) are highly desirable

• Exposure to GenAI tools and technologies is a plus

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science, Electronics, or a related technical discipline

• 12+ years of progressive experience in QA or test engineering, with a focus on complex networking products and NOS platforms

• Extensive experience across the full software development lifecycle, with deep emphasis on system, functional, integration, and performance testing

• Expert-level knowledge of Layer 2/3 networking protocols, including but not limited to VLAN, STP/RSTP/MSTP, BGP, OSPF, IS-IS, EVPN-VXLAN, and multicast technologies

• Demonstrated leadership in defining and executing comprehensive test strategies and guiding QA best practices across teams

• Advanced proficiency in developing robust automation frameworks using Python and integrating them within CI/CD pipelines

• Significant experience with high availability, scalability, fault tolerance, and system stability testing in large-scale environments

• Hands-on expertise with traffic generation tools such as Ixia, Spirent, and other performance benchmarking systems

• Strong communication and stakeholder engagement skills, with the ability to influence cross-functional teams and drive quality outcomes

• Proven experience in mentoring junior engineers and leading quality initiatives in agile development environments

• Industry certifications such as CCNP, JNCIP, or equivalent are strongly preferred

• Familiarity with emerging technologies such as GenAI is a plus

Notes

This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.
Celestica's policy on equal employment opportunity prohibits discrimination based on race, color, creed, religion, national origin, gender, sexual orientation, gender identity, age, marital status, veteran or disability status, or other characteristics protected by law. 
This policy applies to hiring, promotion, discharge, pay, fringe benefits, job training, classification, referral and other aspects of employment and also states that retaliation against a person who files a charge of discrimination, participates in a discrimination proceeding, or otherwise opposes an unlawful employment practice will not be tolerated. All information will be kept confidential according to EEO guidelines.

COMPANY OVERVIEW:
Celestica (NYSE, TSX: CLS) enables the world's best brands. Through our recognized customer-centric approach, we partner with leading companies in Aerospace and Defense, Communications, Enterprise, HealthTech, Industrial, Capital Equipment and Energy to deliver solutions for their most complex challenges. As a leader in design, manufacturing, hardware platform and supply chain solutions, Celestica brings global expertise and insight at every stage of product development – from drawing board to full-scale production and after-market services for products from advanced medical devices, to highly engineered aviation systems, to next-generation hardware platform solutions for the Cloud. Headquartered in Toronto, with talented teams spanning 40+ locations in 13 countries across the Americas, Europe and Asia, we imagine, develop and deliver a better future with our customers.

Celestica would like to thank all applicants, however, only qualified applicants will be contacted.
Celestica does not accept unsolicited resumes from recruitment agencies or fee based recruitment services.

This location is a US ITAR facility and these positions will involve the release of export controlled goods either directly to employees or through the employee's movement within the facility. As such, Celestica will require necessary information from all applicants upon an applicant's acceptance of employment to determine if any export control exemptions or licenses must be filed.