Test Engineer, Network & Security - AI Data Center

Celestica; Richardson (TX); On-site; USD 90,000 - 120,000; Full time

Job summary

Celestica in Richardson, Texas is seeking a Network and Security Compliance Test Engineer responsible for validating network functionality, performance, and security of AI data center infrastructure.

This role requires robust knowledge in networking fundamentals and hands-on experience with traffic generation. Key responsibilities include leading test development for complex network topologies and ensuring compliance with security standards. Strong proficiency in Python and experience with routing protocols are essential.

Qualifications

• 3+ years of experience in network testing, focusing on data center environments.
• Deep knowledge of advanced networking concepts and architecture.
• Hands-on experience with traffic generators and Python for automation.

Responsibilities

• Lead testing strategies for AI data center network functionality.
• Conduct testing of routing protocols to validate network stability.
• Perform vulnerability assessments and mitigate security risks.

Skills

Network architecture

Routing protocols

Python programming

Test automation

Traffic generation tools

Education

Bachelor's degree in Computer Science or related field

Tools

IXIA

Spirent

Docker

Kubernetes

Job description

General Overview

Req ID: 129196

Region: Americas

Country: USA

State/Province: Texas

City: Richardson

Functional Area: Engineering

Career Stream: Design - Software Engineering

SAP Short Name: ENG-ENG-DSE

Job Level: Level 07

IC/MGR: Individual Contributor

Direct/Indirect Indicator: Indirect

Summary

The Network and Security Compliance Test Engineer will be responsible for validating the network functionality, performance, and security posture of our AI data center infrastructure. This role requires a strong understanding of networking fundamentals, routing protocols, hands‑on experience with traffic generation, and a keen eye for security vulnerabilities. You will be instrumental in ensuring our network adheres to compliance standards and provides a reliable, secure foundation for our demanding AI workloads.

Knowledge/Skills/Competencies

As a Network and Security Compliance Test Engineer, you will be a key contributor to the design, implementation, and validation of our AI data center's network and security posture. You'll leverage your deep expertise in networking, routing protocols, and test automation to identify vulnerabilities, optimize performance, and ensure our systems meet the highest standards of security and compliance. This role requires a hands‑on approach, strong analytical skills, and the ability to drive complex testing initiatives.

Responsibilities

• Lead the development and execution of comprehensive test plans and strategies for complex network topologies and devices within our AI data center.
• Drive the design of advanced test cases for L2/L3 functionalities, focusing on performance, scalability, and resilience under high-demand AI workloads.
• Oversee and conduct in‑depth testing of routing protocols (e.g., BGP, OSPF, ISIS) to validate network convergence, stability, and optimal traffic flow.
• Analyze and interpret complex test data to identify network bottlenecks, performance degradation, and areas for optimization.
• Architect and implement robust security test methodologies to rigorously validate network security controls and configurations.
• Perform advanced vulnerability assessments, penetration testing, and security audits on network infrastructure to proactively identify and mitigate risks.
• Develop and integrate automated security compliance checks into continuous integration and deployment pipelines.
• Design, develop, and maintain sophisticated test automation frameworks and scripts primarily using Python, significantly enhancing test efficiency, coverage, & repeatability.
• Champion the adoption of automation best practices across the team.
• Develop custom tools and utilities to simulate complex network conditions and analyze performance.
• Provide expert‑level troubleshooting and root cause analysis for complex network and security incidents, collaborating effectively with cross‑functional engineering and operations teams.
• Actively participate in network architecture reviews, offering critical insights to ensure testability, reliability, and security are built into designs from inception.
• Mentor and guide junior test engineers, fostering their technical growth and promoting a culture of quality and innovation.

Required Qualifications

• Bachelor's degree in Computer Science, Electrical Engineering, or a related technical field.
• 3+ years of progressive experience in network testing, with a significant focus on enterprise or hyperscale data center environments.
• Deep knowledge of network architecture and advanced networking concepts (e.g., VXLAN, EVPN, MPLS).
• Experience with various routing protocols, including advanced configurations and troubleshooting of BGP, OSPF, EIGRP, or ISIS.
• Hands‑on experience with commercial traffic generators (e.g., IXIA, Spirent) and/or advanced open‑source tools (e.g., TRex, Ostinato, DPDK‑based solutions).
• Strong proficiency in Python for automation, including developing complex test scripts, frameworks, and API integrations.

Preferred Qualifications

• CCNA certification is required; CCIE is highly preferred.
• Direct, hands‑on experience with SONiC OS in a production or large‑scale test environment.
• Working experience or strong familiarity with OCP (Open Compute Project) networking principles and hardware designs.
• Experience with software‑defined networking (SDN) and network function virtualization (NFV) concepts and testing.
• Proven experience with network security tools and methodologies (e.g., firewalls, IDS/IPS, access control, encryption).
• Familiarity with cloud networking concepts (AWS, Azure, GCP).
• Experience with Linux system administration and container orchestration (Docker, Kubernetes).

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.

Equal Employment Opportunity

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.

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.