Leidos has an opening for a Sr. Network Design Engineer (Access) to support the customer’s various WAN and LAN networks, in providing network design, upgrades and config support to the architecture team; act as subject matter expert in WAN and LAN technologies and vendors; support customer’s intra- and inter- net and other data communications systems or segments of networked system; and by Providing tiered support as required.
The job duties are as follows:
- Design and improve overall MPLS network architecture and network services. Maintain relevant technical documentation.
- Develop secure network designs including configurations that align with Defense Information Security Agency (DISA) Security Technical Implementation Guides (STIGs) and enterprise policies. Obtain Authority to Operate (ATO) for new devices, software, and capabilities.
- Perform lab equipment, software, application, and network services solution evaluation, testing, integration with NMS, and security certification.
- Evaluate new network technologies, solution, and services.
- Interpret customer requirements and apply industry standard design approaches for service delivery. Fully document designs with diagrams, bill of materials, cabling sheets, configurations, ability to brief designs
- Provide technical expertise to Operations engineers and technicians, supporting fault isolation and resolution. Solve tough problems with innovative and scalable solutions.
- Configuring and troubleshooting Quality of Service (QoS) and traffic optimization to maximize bandwidth usage.
- Support Tier-4 production troubleshooting and develop pro-active network analysis solution of Operation team.
- Leverage complex network analysis tools to identify and predict problems in the network and aid in the post-mortem analysis of network anomalies.
Requirements
- Required Clearance: TS/SCI with Poly
- Candidate must have 16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years, master’s and 10 years, bachelor’s and 12 years, associates and 14 years or HS diploma and 16 years.
- Must be compliant with DoD 8140 Information Assurance Technical (IAT) Level 2.
- Juniper certification or training: JNCIA, JNCIP, and JNCIE.
- Experience in developing and implementing methodologies for analysis, testing, and support of CAN/LAN and WAN networks.
- Familiar with firewalls and network timing.
- Experience with network equipment and solution rolls out, as well as engineering documentation
- Experience with operations and maintenance activities of MPLS networks, MPLS VPN services.
- Experience using complex network analysis tools to identify and correct problems in the network while maintaining logs and records associated with reported problems or situations.
- Knowledge of routing and switching protocols and the ability to demonstrate knowledge through briefings and documentation. Extensive BGP experience a plus.
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:September 17, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
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.
Skills Required
- TS/SCI with polygraph security clearance
- 16 years of combined work history and education, or an equivalent combination of degree and experience
- DoD 8140 Information Assurance Technical (IAT) Level 2 compliance
- Juniper certification or training, including JNCIA, JNCIP, and JNCIE
- Experience developing and implementing methodologies for analysis, testing, and support of CAN/LAN and WAN networks
- Familiarity with firewalls and network timing
- Experience rolling out network equipment and solutions and producing engineering documentation
- Experience operating and maintaining MPLS networks and MPLS VPN services
- Experience using complex network analysis tools to identify and correct network problems while maintaining logs and records
- Knowledge of routing and switching protocols, demonstrated through briefings and documentation
- Extensive BGP experience
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
