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Senior Software Engineer

Leidos Open · verified Oct 24, 2026
Chantilly Full-time Senior Software Engineering

At a glance

Senior Software Engineering role at Leidos. Chantilly · full-time · $107,900–$195,050 base.

SalaryStated by Leidos
$107,900 – $195,050
Base salary for this role, in USD per year, as published in the posting.
This role, from LeidosOur estimate for the market: $155,640–$188,388Median $170,013
The range includes the market median of $170,013 for senior software engineering roles in Chantilly.
Worked out from 14 postings that stated pay, median $170,013. Last updated Oct 19, 2026.
RoleSoftware Engineering
SenioritySenior
LocationChantilly
EmploymentFull-time
Base pay$107,900–$195,050
PostedAug 26, 2026 · 8w ago
Role brief

techroles summary, based on the employer's posting.

What you'll do

  • Modernize older applications while continuing to maintain existing software
  • Build Java and Python applications that use Neo4j and Elasticsearch, plus REST APIs
  • Create repeatable AWS infrastructure with CloudFormation and scripts that configure code on EC2
  • Test and review code using unit tests, peer review and Selenium automation
  • Work through Agile and Scrum delivery with the team, and coach junior developers on shared practices

What you bring

  • An active TS/SCI clearance with Polygraph is required
  • A bachelor's degree and at least eight years of experience, or additional experience in place of the degree
  • Hands-on experience with Java, Spring Boot, Python and AWS
  • Experience interpreting customer requirements and turning them into software solutions
  • Working knowledge of Git, Jenkins or Rundeck, and command-line work in Red Hat Linux

Who this fits

This is a senior development role for someone comfortable building and maintaining software across Java, Python and AWS in a collaborative Agile team. You’ll work in Chantilly and need an active TS/SCI clearance with Polygraph.

From the employer

Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Engineer will work with a large team of developers, software engineers and data engineers. The successfully candidate will support continuity of our customer’s mission by helping to modernize and implement industry standards while ensuring secure, reliable, and uninterrupted availability of IT systems.

Primary Responsibilities

  • Experience in modernization of legacy applications (new software development)
  • Strong communication, design, and documentation skills
  • Comfort and familiarity in maintaining legacy applications
  • Strong time and workflow management skills
  • Comfort and familiarity designing and utilizing custom ETL methodology
  • Knowledge/experience with the development of Cloudformation scripts to generate network and application
  • infrastructure in a repeatable fashion
  • Ability to write custom scripts to install and configure code in EC2 instances
  • Comfort and familiarity in unit testing, peer code review, and automated testing techniques like Selenium (create, edit, maintain, execute)
  • Experience with Python.
  • Develop Java and Python applications that leverage Neo4j and Elasticsearch
  • Ability to Implement NodeJS PM2 for application monitoring and resiliency
  • Utilized SAFe agile techniques to manage workload
  • Leverage Amazon Web Services
  • Experience creating RESTful API
  • Willingness to mentor and teach junior developers’ community best practices in a constructive fashion
  • Work within the parameters of Agile & Scrum methodologies
  • Ability to methodically think through new and exciting challenges in a collaborative team environment in order to provide technically sound solutions

Required Skills

  • Active TS/SCI with Polygraph
  • Bachelor's degree and 8+ years of experience. Additional experience in lieu of degree.
  • Must have experience with Java, Springboot, Python and the Cloud / Amazon Web Services
  • Prior experience reading and developing solutions to customer requirements
  • Knowledge of Git, Jenkins, or Rundeck
  • Experiencing working in Command Line (RH Linux)

Desired Skills

  • Experience with Angular is preferred
  • Certification - Amazon Web Services (AWS)
  • Understanding and knowledge with Identity and Accessibility development practices
  • Experience with automation methodologies like Selenium
  • Experience with containerization and modular development
  • Familiarity with UI/UX Design
  • Full Stack Development

FIP

#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:

August 26, 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 $107,900.00 - $195,050.00

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.

Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Software Engineering$100k+

Find me work

By the team behind techroles.

Find me work
Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind techroles.