Software Devoloper

Leidos Inc; Reston (VA); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Mid-Level Software Developer to support a highly technical program in partnership with the DTRA and DIA. You will build and optimize software solutions that drive physics-based models and simulations, enabling scientific assessments and increasing operational efficiency.

Responsibilities include building backend services and data pipelines, ETL workflow automation, and secure cross-domain data transfers, while collaborating with scientists and defense analysts to translate

Qualifications

• BS degree in a technical field with 6–12 years of relevant experience or MS with 6–10 years of experience.
• Proficiency in Python, C++, or Java.
• Experience with data pipelines, ETL processes, and cloud environments (AWS GovCloud, C2S, SC2S).
• Experience with CI/CD pipelines and Git version control.

Responsibilities

• Develop, maintain, and modernize software algorithms for physics-based models.
• Build backend services and cloud-native data pipelines for large-scale simulations.
• Architect and maintain ETL data flows ingesting massive scientific datasets.
• Implement secure cross-domain data transfer between unclassified and classified networks.
• Collaborate with scientists, physicists, hardware engineers, and defense analysts to translate complex requirements into software prototypes.

Skills

Python

C++

Java

Education

Bachelor's degree or higher in a technical field

Tools

AWS GovCloud

Git

CI/CD

ETL tooling

Job description

Description

Leidos is seeking a Mid-Level Software Developer to support a highly technical, interdisciplinary program in partnership with the Defense Threat Reduction Agency (DTRA) and the Defense Intelligence Agency (DIA). You will build and optimize software solutions that physically and functionally characterize hardened facilities and Weapons of Mass Destruction (WMD) processes. Your code will directly drive physics-based models and effects-based simulations, empowering scientific assessments and increasing overall operational efficiency.

Key Responsibilities

• Scientific & Engineering Software Integration: Develop, maintain, and modernize software algorithms that convert complex scientific data into physics-based models.
• Effects-Based Simulation Support: Build backend services and cloud-native data pipelines to support large-scale effects-based simulations for WMD and hardened facility characterization.
• Workflow Automation & ETL: Architect and maintain reliable ETL data flows to ingest massive datasets from varied scientific, engineering, and intelligence formats.
• Cross-Domain Data Transfer: Implement, secure, and maintain cross-domain transfer solutions to safely move critical data across unclassified and classified networks.
• Cross-Discipline Collaboration: Work hand-in-hand with scientists, physicists, hardware engineers, and defense analysts to translate vague, highly complex requirements into functional, user-friendly software prototypes.

Required Qualifications

• U.S. Citizenship is required
• Candidate must have a TS/SCI and be eligible to obtain a TS/SCI w/ poly level clearance
• Requires deep understanding of and ability to apply principles, theories, and concepts of technical domain and has broad understanding of other related specialty areas. BS degree and 8 - 12 years of prior relevant experience or Masters with 6 - 10 years of prior relevant experience. May possess a Doctorate in technical domain.
• Proficiency in high-level programming languages (e.g., Python, C++, or Java).
• Experience designing and managing data pipelines using modern ETL tools and processes.
• Hands-on experience developing software within AWS cloud environments (e.g., AWS GovCloud, C2S, SC2S).
• Direct experience handling cross-domain transfer mechanisms (e.g., CDS, guard implementations) to securely move software data between unclassified and classified networks.
• Experience with CI/CD, DevSecOps pipelines, and modern version control (Git).

Preferred Qualifications

• Specific experience with AWS data services (e.g., AWS Glue, EMR, S3, RDS).
• Familiarity with Agile methodologies and rapid prototyping to support mission-critical decisions
• Background in physics-based modeling, WMD analysis, or structural/facility engineering.

#ASBA

Original Posting: July 21, 2026

Pay Range: Pay Range $107,900.00 - $195,050.00

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.