CAS FOSS and Infrastructure Architect

Leidos is seeking a Software Architect who will focus on program

CAS & FOSS

as well as Infrastructure for full stack web applications. The CAS, FOSS, and Infrastructure Architect will join with other architects to provide high level design, process, and technical guidance to a team supporting development environments across a portfolio of Air Traffic Control programs, including the Federal Aviation Administration's (FAA) En-Route Automation Modernization (ERAM) system. ERAM is the heart of the Next Generation (NextGen) Air Transportation System and the pulse of the National Airspace System, helping advance our transition from a ground-based system of air traffic control to a satellite-based system of air traffic management. Responsibilities include ownership and execution of the engineering review process for software licenses; coordination and maintenance of the Software Architecture Document describing the environment and configuration of program

COTS/FOSS

; ownership of database architecture for web applications; hands-on database management; and ability to lead and guide others in database update activities. Primary Responsibilities Maintain software architecture document (SWAD) for ERAM operational, operational support, and factory environments. As

CAS SWAD

owner ensure

CAS/FOSS

data records are up to date Familiarize with the

CAS/FOSS

in the system to accumulate some expertise on how they are used within the system Familiarize with system architecture in an effort to accumulate expertise for suggesting new

CAS/FOSS

for future SIGs Participate in

SIG/PRED

preparation and reviews impacting

CAS/FOSS

Consult as needed with software on design/implementation of solutions including

CAS/FOSS

Participate in End Of Life assessment activities Shepherd FOSS process and be FOSS manager approver Shepherd NDI process and own NDI documentation Monitor licensing of CAS/FOSS and coordinate with legal as needed Interact with other programs to share best practices with regard to

CAS/FOSS

Monitor security and problem reports for system

CAS/FOSS

Determine whether

CAS/FOSS

has any limitations with regard to distribution to the FAA Create keys and CSRs and maintain SSL certificates using OpenSSL. Perform web application and database server maintenance on RHEL servers within the Gaithersburg and remote environments.

Separate bullet:

Architect the maintenance and enhancement of web server configuration (Tomcat, Nginx) and RHEL server configuration using Ansible playbooks. Handle software installation, software configuration, software updates, certificate and service account management, and DBA activities in MySQL, PostgreSQL, and Oracle SE. Basic Qualifications

• Requires a BS degree in Computer Science/Engineering with a minimum of 8+ years of prior relevant experience, or a Master's degree with 6+ years of prior relevant experience will also be considered
• Experience on a large-scale software development program in a software engineering leadership capacity
• Demonstrated understanding of full software development life cycle as well as proven experience with supporting highly critical customer missions.
• Understanding of SW configuration management tools and change tracking.
• Must have excellent verbal and written communication skills and an ability to demonstrate a commitment to personal and corporate excellence, ethical behavior and integrity.
• Planning and cost estimating experience
• Experience with execution under Waterfall and/or Agile development methodologies
• Red Hat Enterprise Linux Administration with SELinux
• Mid-level MySQL, SQL, Oracle SE, and PostgreSQL experience including clustering
• Experienced in: Tomcat, Nginx, systemd, Ansible, OpenSSL, Percona XtraDB Cluster Preferred Qualifications
• Cost accounting / earned value management
• Familiarity with the National Air Space and FAA NextGen Air Traffic Control programs
• Background and development experience in ERAM Software Engineering, particularly Infrastructure and Support software products.
• Prior experience in ERAM SW process, ERAM SW architecture and business rhythms.
• Understanding of

OS, CAS, COTS

products and lifecycles, particularly

LINUX OS. ATMC

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:

May 12, 2026 For 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.

Pay Range:

Pay Range $131,300.00

• $237,350.

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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.

Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to spam.leidos@leidos.com. Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.