Expert Software Engineer
Company: Leidos
Location: Chantilly
Posted on: April 1, 2026
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Job Description:
Leidos is seeking Software Developer-SME for a 200 FTE program.
The candidate will provide development engineering and programming
support to projects and infrastructure support activities to
include: 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 Qualifications
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 Experience using code repositories such as
Git Demonstrated experience documenting such artifacts as code and
methodologies Familiarity with writing unit and integration tests
Desired Qualifications Experience with Spring and Java Experience
with databases such as PostgreSQL Experience working in an AGILE
development environment Ability to work collaboratively in a team
environment Experience with Docker, Kubernetes, and
scalable/parallelized architecture Possess a passion for learning
new technologies and staying up to date with industry trends
Understanding of Intelligence Community customers and their
priorities 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: January 30, 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.
Keywords: Leidos, Catonsville , Expert Software Engineer, IT / Software / Systems , Chantilly, Maryland
