Lead Network Software Engineer

Leidos Holding$107K — $195K *
Telecommunications & Hardware
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in computer science, computer engineering, electrical engineering, networking, or related field; 8+ years of relevant experience may substitute for degree.
  • Strong background in routing design, network emulation, telemetry, and response capabilities.
  • Expertise in routing protocols such as BGP, OSPF, IS-IS or equivalent, with detailed knowledge of protocol internals.
  • Hands-on experience with Linux networking tools and concepts like namespaces and iptables/nftables.
  • Proficient in Docker/container networking, including various networking modes and troubleshooting.
  • Programming experience in Python and C++, with skills in code review and debugging.
  • Experience with network simulation at scale and CI/CD implementations.

Responsibilities

  • Lead the design and execution of advanced routing and emulation capabilities for DARPA QuANET.
  • Translate complex R&D objectives into actionable technical plans and software tasks.
  • Oversee routing protocol integration within the network emulation environment.
  • Guide the technical execution in Python and C++, focusing on code review and debugging.
  • Configure large-scale network simulation and emulation environments.
  • Facilitate integration of telemetry data into routing decisions.
  • Establish continuous integration and regression testing workflows for network code.

Benefits

  • Opportunity to work on cutting-edge government-funded R&D projects.
  • Collaboration with experts across hardware, cyber, and networking fields.
  • Focus on innovative technologies and high-ambiguity technical environments.
  • Possibility for impactful contributions directly affecting national security.
  • Exposure to advanced systems and distributed networking challenges.
Full Job Description
The Lead will support DARPA QuANET and the position builds on building and testing software that integrates network emulation, routing, telemetry, and cyber-response logic. The developer will work hands-on with Python and C++, create reproducible test environments, debug Linux and container networking issues, and collaborate with senior engineers across hardware, cyber, and networking teams. Strong systems and distributed-networking skills are essential; quantum-domain experience is not required. Candidates with deep implementation ability and broad networking expertise are preferred.

Primary Responsibilities:
  • Lead the design and execution of routing, network emulation, telemetry, and network-response capabilities for the program.
  • Translate open-ended R&D objectives into concrete technical plans, experiments, software tasks, and integration milestones.
  • Own container-to-routing-protocol integration in the team's network emulation environment.
  • Guide implementation in Python and C++, including design review, pull request review, and technical debugging.
  • Build and maintain scalable network simulation or emulation environments for large virtual topologies.
  • Integrate distributed telemetry and cross-component state data into routing and network response decisions.
  • Establish reproducible CI/CD, regression testing, and experiment validation workflows for network code.
  • Coordinate standing technical co-design with adjacent teams so interfaces, assumptions, and dependencies remain explicit.
  • Represent technical decisions in customer, PI, advisor, and program-management discussions with evidence-based reasoning.
  • Communicate technical risks, tradeoffs, and status clearly to both technical and non-technical audiences.


Basic Qualifications:
  • Bachelor's degree in computer science, computer engineering, electrical engineering, networking, or a related technical field, and 8+ years of relevant experience; additional relevant experience may be considered in lieu of degree.
  • Experience leading the design and execution of routing, network emulation, telemetry, and network-response capabilities.
  • Deep routing protocol knowledge, including protocol-internals understanding of BGP, OSPF, IS-IS, or comparable protocols.
  • Experience with SPF behavior, LSA flooding, path attributes, convergence behavior, and routing tradeoffs.
  • Hands-on Linux networking experience, including namespaces, veth pairs, iproute2, iptables/nftables, and tc.
  • Docker or container networking experience, including bridge, macvlan, host modes, CNI plugins, and nested networking failure modes.
  • Experience with open-source routing stacks such as FRR, Bird, Quagga, or similar.
  • Hands-on programming experience in Python and C++, with ability to read, write, and review production-quality code.
  • Experience with network simulation or emulation at scale.
  • Experience implementing CI/CD, regression testing, or reproducible validation pipelines for networking or systems projects.
  • Experience with distributed systems, network telemetry, or state-distribution mechanisms.
  • Ability to lead technical work under ambiguity while remaining hands-on with implementation and lab execution.
  • Must be a US citizen with ability to obtain and maintain a US government security clearance.


Preferred Qualifications:
  • Experience with gNMI, OpenConfig, streaming telemetry, or comparable observability/control-plane data sources.
  • Open-source routing or network-stack contribution history.
  • Prior experience on government-funded R&D programs such as DARPA, IARPA, ONR, AFRL, ARL, DOE, or NSF.
  • Experience leading small technical teams in high-ambiguity research, prototype, or advanced development environments.
  • Experience presenting and defending technical approaches to government customers, technical reviewers, or external advisors.


Original Posting:
June 24, 2026

Pay Range:
Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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