Senior Linux & Networking Engineer - Automation Lead (TS)

L2T, LLC; Herndon (VA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

401(k) match

Health, dental, vision insurance

Legal resources plan

Vacation, personal/sick leave

Federal holidays

Job summary

L2T, LLC in Herndon, VA is seeking a hands-on Senior Systems/Network Engineer to design, implement, and operate enterprise Linux and network infrastructure. You will lead automation efforts, optimize security and reliability, and mentor junior engineers in a fast-growing, mission-focused team.

Candidates must have 10+ years in infrastructure engineering, strong Linux and networking expertise, SaltStack, and experience with FreeIPA, Cisco/Juniper, and virtualization.

Qualifications

• 10+ years of experience in Systems, Network, or Infrastructure Engineering.
• Expert-level knowledge of Linux administration in enterprise or mission-critical environments.
• Strong understanding of Linux internals, including system calls, processes, memory management, filesystems, and performance tuning.
• Experience designing, implementing, and supporting complex enterprise infrastructure environments.
• Hands-on experience with SaltStack (Salt) and infrastructure automation.
• Experience administering identity and access management solutions, including FreeIPA/IPA.
• Strong networking expertise, including: TCP/IP, DNS, DHCP, VLANs, VPNs.
• Routing and switching technologies (Cisco/Juniper).
• Experience with virtualization technologies, hypervisors, and VDI.
• Strong scripting and automation skills using Bash, Python, or similar languages.
• Experience developing and maintaining secure, hardened system and network configurations.
• Demonstrated ability to troubleshoot complex issues across operating systems, network infrastructure, applications, and distributed systems.
• Excellent written and verbal communication skills.

Responsibilities

• Design, implement, maintain, and optimize enterprise Linux systems and network infrastructure.
• Architect and support scalable, secure, and highly available infrastructure solutions.
• Lead automation initiatives using SaltStack and other infrastructure automation tools.
• Serve as a senior technical resource and escalation point for complex production issues.
• Perform advanced troubleshooting and root cause analysis across systems, networks, applications, and services.
• Engineer and maintain Cisco and Juniper network environments to meet performance, security, and reliability requirements.
• Administer and support identity management services, including FreeIPA/IPA.
• Develop and maintain infrastructure standards, documentation, and operational procedures.
• Evaluate emerging technologies and make recommendations for infrastructure improvements and modernization.
• Ensure systems and networks meet or exceed security, compliance, and operational standards.
• Mentor junior engineers and foster technical growth across the team.
• Collaborate with customers, stakeholders, and engineering teams to develop solutions that meet current and future business requirements.
• Participate in architecture reviews, capacity planning, disaster recovery planning, and continuous improvement initiatives.

Skills

Linux administration

SaltStack (Salt)

FreeIPA/IPA

Networking: TCP/IP, DNS, DHCP

Cisco & Juniper

Scripting: Bash / Python

Security/hardening

Troubleshooting complex systems

Infrastructure automation

Education

College degree

Tools

SaltStack

FreeIPA/IPA

Virtualization/VDI

Cisco IOS / Junos

Bash / Python scripting

Job description

L2T, LLC in Herndon, VA is seeking a hands-on Senior Systems/Network Engineer to design, implement, and operate enterprise Linux and network infrastructure. You will lead automation efforts, optimize security and reliability, and mentor junior engineers in a fast-growing, mission-focused team.

Candidates must have 10+ years in infrastructure engineering, strong Linux and networking expertise, SaltStack, and experience with FreeIPA, Cisco/Juniper, and virtualization.