Leidos

Senior Software Developer

United States · Work style not stated · Full time

Apply on the employer’s site ↗See how well you match this job

You apply directly with the employer. ROLIVA does not submit applications from this page and is not the employer.

About the role

Description from the employer’s posting. Check the employer’s page for the current version.

EmployerLeidos
LocationUnited States
Work styleWork style not stated
Employment typeFull time
Employer posted8 Oct 2026

Leidos is seeking a Senior Software Developer to support the rapid development of operations, data analysis, and data visualization applications in a dynamic mission environment. This is a fast-paced development environment where emerging operational needs often require quick, practical software solutions that can be deployed rapidly and refined over time.

The successful candidate will work closely with the customer and end users to understand evolving requirements, solve complex data-driven problems, and deliver effective solutions across both front-end and back-end environments. The role supports the full software development lifecycle, including requirements analysis, design and development, troubleshooting, deployment, system backup and recovery, and enhancement of both existing and new applications.

This position is located in Chantilly, VA.

CLEARANCE REQUIREMENT: Candidates must currently possess an active TS/SCI clearance and be willing and able to undergo a polygraph. Candidates who do not currently possess an active TS/SCI will not be reviewed or considered.

Show full description

Primary Responsibilities

Design, develop, maintain, and enhance mission-critical software applications.
Rapidly develop and deliver software solutions in response to emerging operational needs and evolving requirements.
Develop both front-end and back-end components in support of operational and data-analysis requirements.
Work directly with customers and end users to gather requirements and translate operational needs into technical solutions.
Develop applications supporting the analysis and visualization of large and complex datasets, including geospatial data.
Troubleshoot and resolve complex software, system, and data-related issues.
Participate throughout the software development lifecycle, including requirements, design, development, testing, deployment, and sustainment.
Research and integrate new technologies as mission and technical requirements evolve.

Basic Qualifications

Bachelor's degree in Computer Science, Information Technology, or related technical field.
15+ years of relevant software development experience.
Current/active TS/SCI security clearance and willingness to undergo a polygraph.
Demonstrated experience rapidly developing and delivering software solutions in response to time-sensitive or evolving operational requirements.
Experience developing applications using an object-oriented programming language such as Java or C#/.NET.
Experience developing in Python.
Experience with modern JavaScript frameworks such as React.js, Node.js, or Next.js.
Experience with both relational and non-relational databases, such as MySQL and MongoDB.
Experience developing software that processes, analyzes, or visualizes large or complex datasets.
Experience with UI/UX design principles and translating user requirements into functional interfaces.
Experience developing in both Windows and Linux environments.
Experience with source-code repositories/version control, including Git and/or Subversion.

Preferred Qualifications

Experience working with geospatial datasets and developing applications supporting geospatial analysis or visualization.
Experience developing software in support of an operational mission environment.
Experience with cloud infrastructure and services, including IaaS.
Experience with ETL processes and large-scale datasets.
Experience working with data formats including CSV, JSON, and XML.
Experience with containerization and orchestration technologies, including Docker and Kubernetes.
Experience with ActiveMQ.

#MSBA

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:

October 6, 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 $154,050.00 - $278,475.00

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.

See how well you match this job Apply on the employer’s site ↗

Check your resume against this job Free, no sign-up. Nothing you paste is stored.

Staying safe while you apply

Never pay to apply, interview or accept an offer. ROLIVA never asks you for payment to apply to a job.
Apply only through the official “Apply on the employer’s site” button, on the employer’s own site, and check that a recruiter’s email uses that employer’s own domain rather than a free email address.
Be cautious of an offer made with no real interview, or pressure to decide quickly or share financial details early.

Does something look wrong with this listing? Use “Report broken link” in the role details, or read ROLIVA’s full job-safety guidance ↗.

Preparing for this role with ROLIVA

Check the fit.
Compare the requirements with the experience you have confirmed, including gaps.
Prepare honestly.
Build interview stories and application drafts from your own evidence.
Keep track.
Save the role and record your own application status and follow-ups.

Create a free workspace or log in.