Software Engineer Expert

Leidos Inc; Chantilly (VA); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos Inc. in Chantilly, VA, is seeking a Full Stack Developer to build software for Entitlement Programs, IdAM/ICAM, and Digital Policy Management.

You will work on modern web front-ends (Vue/React), back-end services, and cloud deployments, collaborating with across-functional teams to deliver secure, scalable applications for high-visibility missions. The role requires a BS degree with 12+ years of experience, proficiency in Java, JavaScript, Python or XML, and cloud experience.

Qualifications

• BS degree and 12+ years of relevant experience.
• Proficient with Java, JavaScript, Python, or XML.
• Experience managing and developing web software.
• Experience with cloud services.
• Experience in Windows and/or Unix.

Responsibilities

• Design, develop, and modify software systems in cloud environments.
• Coordinate software system installation and monitor performance to ensure specifications are met.
• Develop unit and functional test plans.
• Provide operations and maintenance of operational systems.
• Modify existing software to improve performance or adapt to new requirements.
• Consult with customers about software system design and maintenance.

Skills

Java

JavaScript

Python

XML

Web development

Cloud services

Windows/Unix

Education

Bachelor's degree

≥12 years experience

Job description

Description

Leidos has immediate opportunities for a Full Stack Developer to join a team building innovative software supporting the Sponsor's Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. We're supporting a well-established customer that is responsible for critical and high-visibility missions applications used by a wide audience. Our team is tremendously talented, and we need to add a talented and creative Full-Stack Developer to the team.

• Experience with VUE or React
• Provide database architectural and design capabilities
• Develop unit and functional test plan
• Provide the operations and maintenance of operational systems
• Modify existing software to correct errors, allow it to adapt to new hardware, or to improve its performance
• Analyze user needs and software requirements to determine feasibility of design within time and cost restraints
• Consult with customers about software system design and maintenance
• Coordinate software system installation and monitor equipment functioning to ensure specifications are met Design, develop, and modify software systems, using scientific analysis and mathematical models to predict and measure outcome and consequence of design
• Develop and direct software system testing and validation procedures, programming, and documentation
• Confer with systems analysts, engineers, programmers and others to obtain information on project limitations and capabilities, performance requirements and interfaces
• Correct errors by making appropriate changes and then recheck the program to ensure that the desired results are produced
• Conduct trial runs of program and software applications to be sure they will produce the desired information and that the instructions are correct
• Compile and write documentation of program development and subsequent revisions, inserting comments in the coded instruction so others can understand the program
• Write, update, and maintain computer programs or software packages to handle specific jobs, such as tracking inventory, storing or receiving data, or controlling other equipment
• Consult with managerial, engineering, and technical personnel to clarify program intent, identify problems, and suggest changes
• Perform or direct revision, repair, or expansion of existing programs to increase operating efficiency or adapt to new requirements
• Written, analyze, review, and rewrite programs, using workflow chart and diagram, and applying knowledge of computer capabilities, subject matter, and symbolic logic
• Write or contribute to instructions or manuals to guide end users
• Investigate whether networks, workstations, the central processing unit of the system, or peripheral equipment are responding to a program's instructions
• Prepare detailed workflow charts and diagrams that describe input, output, and logical operational, and convert them into a series of instructions coded in a computer language
• Consult with and assist computer operators or system analysts to define and resolve problems in running computer programs
• Assign, coordinate, and review work and activities of programming personnel
• Designs, Develops, and Maintains applications within the cloud environment. This can be for new applications development or the transition of legacy applications to the cloud environment.

Required Quals

• Active TS/SCI with Polygraph
• Requires BS degree and 12+ years of prior relevant experience. Additional experience in lieu of degree.
• Demonstrated experience in multiple programming languages (Java, JavaScript, Python, and/or XML)
• Experience managing and developing web software
• Demonstrated experience with cloud services
• Experience in Windows and/or Unix

FIP

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: August 11, 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

About 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 $16.7 billion for the fiscal year ended January 3, 2025. 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.

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

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.