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Defense, Government Contracting, Cybersecurity, IT Services, Aerospace, Healthcare Technology

Software Engineer Expert

Chantilly, VAOnsiteFull Time$131,300–$237,350 /yrPosted 1 month agoVisa sponsorship available

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Required skills

  • TS/SCI with Polygraph
  • 12+ years' experience
  • Java
  • Spring Boot
  • Python
  • Amazon Web Services
  • Git
  • Jenkins
  • Rundeck
  • CloudFormation

Nice to have

  • Jrandle
  • SAFe

Role summary

Leidos is seeking an Expert Software Developer to support the Sponsor’s Attribute/Entitlement Services within the IDAM/ICAM space. This role involves modernizing and implementing industry standards for secure, reliable, and uninterrupted IT systems. Responsibilities include developing Java and Python applications, scripting infrastructure with CloudFormation, configuring code in EC2 instances, implementing NodeJS for monitoring, and creating RESTful APIs. The position requires extensive experience with Java, Python, AWS, and related tools like Neo4j, Elasticsearch, and Git/Jenkins/Rundeck. A TS/SCI with Polygraph clearance is mandatory.


Leidos is seeking an Expert Software Developer for a technical development program of 200+ FTE supporting the Sponsor’s Attribute/Entitlement Services within the IDAM/ICAM space. The Software Developer will work with a large team of developers, software engineers and data engineers. The successful 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

  • List daily duties and/or specific job responsibilities.
  • 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
  • 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

 

Required Qualifications

  • Active TS/SCI with Polygraph
  • Requires a Bachelor's degree and 12+ years' 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

Desired Qualifications

  • Experience with Jrandle is preferred
  • Certification - Amazon Web Services (AWS)

#MSBA

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:

October 8, 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.

Sample Leidos interview questions

  • 1

    What are the key considerations when designing a highly available and consistent service registry?

    system designmedium
  • 2

    Buildings with an Ocean View Find all buildings that have an ocean view. Input: heights = [1,2,3,4] Output: [3] Explanation: Since the ocean is to the right, only the rightmost tallest building (index 3) is not blocked by any others.

    codingmedium
  • 3

    Merge K Sorted Linked Lists Merge K sorted linked lists. Input: lists = [[2,2,3],[1,5]] Output: [1,2,2,3,5] Explanation: Extracts the smallest current node iteratively using a priority queue to build a single merged and sorted linked list.

    codingmedium
  • 4

    Optimal Meeting Point Calculate the optimal meeting point for multiple people on a 2D grid. Input: grid = [[1,0],[0,1]] Output: 2 Explanation: The optimal meeting point is either (0,1) or (1,0), requiring exactly 1 step from each person resulting in a total distance of 2.

    codingmedium
  • 5

    Maximize the minimum distance between aggressive cows in stalls. Input: stalls = [0,4,3,7,10,9], cows = 3 Output: 4 Explanation: Placing the cows at positions 0, 4, and 10 yields a maximum possible minimum distance of 4 between any two cows.

    codingmedium

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