Linux Networking Software Engineer
Carlsbad, CA
Category: Development
Industry: Technology
Reference ID: JN -032026-106013
Date Posted: 03/17/2026
Shortcut: http://careers.eliassen.com/5KBYRZ
Description:
Hybrid 3 Days in Carlsbad, CA
Our client is seeking a software engineer to build core components of a software-defined networking platform across Linux kernel and user space. The role will focus on developing and optimizing networking features including L2/L3 routing, firewalls, VPNs, and tunnels for embedded devices. You will implement high-performance services in C/C++ and Python, analyze complex system behavior, and validate updates in real or simulated environments. Your work will advance reliable, secure, and maintainable networking at scale.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $70.00 to $110.00/hr. w2
Responsibilities:
- Maintain Linux kernel modules, drivers, and user-space services for embedded networking devices.
- Implement and modify networking features including VPN tunnels, NAT, firewalls, VRFs, and L2/L3 routing.
- Develop backend services in C/C++ and Python with emphasis on performance, safety, and maintainability.
- Analyze system and networking behavior using tools such as tcpdump and Wireshark.
- Deploy and validate software updates against real or simulated network environments.
Experience Requirements:
- 4+ years modifying and developing Linux kernel modules or low-level Linux drivers, ideally networking-related.
- 4+ years building and maintaining Linux services with systemd.
- Strong understanding of the TCP/IP stack, NAT, firewalls, and VRFs.
- Experience with L2 networking concepts and technologies such as bridging and VLANs.
- Familiarity with IPsec tunnels and configuration via strongSwan.
- Proficiency with C/C++ and Python.
- Ability to design and implement RESTful and gRPC APIs for inter-process and remote communication.
- Proficient at diagnosing complex networking and system-level issues across user space and kernel space.
- Hands-on experience with open-source networking tools such as tcpdump and Wireshark.
- Familiarity with Git.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above