SONiC Networking SW Developer

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Date: May 29, 2026

Location: Guindy, Chennai, TN, IN

Company: Celestica International LP

Req ID: 135881 
Remote Position: No
Region: Asia 
Country: India 
State/Province: Chennai 
City:  Guindy, Chennai 

Summary

We are seeking a Senior Staff /Staff Engineer, Networking to join our Sonic NOS/SDK team. This is a senior-level, Individual contributor position focused on the development and sustenance of Network Operating Systems(NOS) for white-box switching platforms.

The ideal candidate has a strong background in NOS architecture, L2/L3 protocol development, ASIC integration, and programming in C/C++.

This is a pure individual contributor (IC) role. You’ll collaborate with global engineering teams and work at the forefront of NOS software design, enabling advanced networking solutions for data center and enterprise environments.

Detailed Description

• Should have a strong command over "C" programming language/C++ and must have executed projects in it.
• Should have a solid exposure of programming ASICs (Broadcom, Marvell, Innovium, P4) and must have done projects around it.
• Should have a very good knowledge of Linux kernel from a networking perspective.
• Exposure to ebtables/iptables preferred.
• Must have a good understanding of configuration management technologies and streaming telemetry technologies.
• Must have good communication skills and be willing to work in a multi-cultural and multi-regional high performance team.

Knowledge/Skills/Competencies

Technical Core
• NOS Development or Sustenance


NOS Experience: 

o SONiC (preferred), Cisco IOS, Juniper JUNOS, Arista EOS or like
o Layer-2 Protocols: STP, LLDP, LACP, etc...
o Layer-3: BGP, OSPF, IS-IS, EVPN/VXLAN, MPLS, etc...

 

• Programming Languages
o Strong proficiency in C/C++
o Python/bash/go Lang (Good to have skills)

 

• ASIC/Hardware Experience
o Familiarity with Broadcom (DNX/XGS), Marvell, or similar ASICs
o Experience working on hardware-software integration for networking products

Engineering Execution
• Ability to independently design, code, debug, and validate complex NOS features
• Hands-on experience with Linux networking subsystems

Team Collaboration
• Ability to work with geographically distributed teams 
• Strong written and verbal communication skills in a technical engineering context

Physical Demands

  • Duties of this position are performed in a normal office environment.
  • Duties may require extended periods of sitting and sustained visual concentration on a computer monitor or on numbers and other detailed data. 
  • Repetitive manual movements (e.g., data entry, using a computer mouse, using a calculator, etc.) are frequently required.
  • Occasional travel may be required.

Typical Experience

  • 10+ years

Typical Education

Bachelor degree or consideration of an equivalent combination of education and experience.

Educational Requirements may vary by Geography

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.

Celestica is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against on any protected status (including race, religion, national origin, gender, sexual orientation, age, marital status, veteran or disability status or other characteristics protected by law).
At Celestica we are committed to fostering an inclusive, accessible environment, where all employees and customers feel valued, respected and supported. Special arrangements can be made for candidates who need it throughout the hiring process. Please indicate your needs and we will work with you to meet them.

 

COMPANY OVERVIEW:

Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high-growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.

Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments:  Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):

ATS: This segment serves customers in complex, regulated and high-reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.

CCS: This segment focuses on high-performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI-driven growth.

Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast-changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.

 

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.
 


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