Software Engineer Expert

leidos· 00100 LEIDOS, INC.
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📍 Chantilly, VAFull time💰 USD 131K–237K

About this role

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

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.

Frequently Asked Questions

What is the salary for the Software Engineer Expert role at leidos?
The listed salary for this Software Engineer Expert position at leidos is USD 131K–237K. This is an Full time role.
Where is the Software Engineer Expert position at leidos located?
This Software Engineer Expert role at leidos is based in Chantilly, VA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Software Engineer Expert role at leidos full-time or part-time?
This is listed as a Full time position. It is posted as a Software Engineer Expert role in the 00100 LEIDOS, INC. department at leidos.
Which team or department does the Software Engineer Expert at leidos belong to?
This Software Engineer Expert position is part of the 00100 LEIDOS, INC. department at leidos. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Software Engineer Expert position at leidos?
Click the "Apply Now" button on this page. You will be redirected to leidos's official application portal hosted on workday where you can submit your application directly.
When was the Software Engineer Expert job at leidos posted?
This Software Engineer Expert position at leidos was posted on Aug 11, 2026. Apply as soon as possible — early applications are often reviewed first.
Software Engineer Expert
leidos · 💰 USD 131K–237K
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