Sr. Software Engineer

Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers’ mission to defend against evolving threats around the world. Our team’s focus is to ensure our customers have the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets.

The Intelligence Production Solutions Division (IPSD), part of the Decision Advantage Solutions Business Area, is currently seeking a highly motivated Sr. Software Engineer for the Chinook Program. The Chinook Program delivers mission-driven software capabilities across the GEOINT enterprise through secure, agile, and cloud-native development. As a senior engineer, you will lead technical development efforts, drive DevSecOps maturity, and support our customers’ evolving mission needs with scalable, resilient solutions.

As a leader you will design and implement modern, containerized applications in classified cloud environments, guiding junior engineers, and working directly with mission stakeholders to ensure successful delivery.

Position may be performed in the following locations below. Please note Gaithersburg, MD is the program’s primary work location.

Gaithersburg, MD

Alexandria, VA

Chantilly, VA

Aurora, CO

St. Louis, MO

Tucson, AZ

Clearance Level Required :

Must have a Top Secret with SCI eligibility and able to obtain a Polygraph.

Primary Responsibilities :

Lead full-stack software development of enterprise applications and services supporting our customer’s GEOINT mission.

Design and implement secure, scalable microservices in cloud environments such as AWS GovCloud or C2S.

Guide and mentor junior and mid-level engineers, enforce code quality, and lead peer reviews.

Build and deploy applications using DevSecOps pipelines, container orchestration, and Infrastructure-as-Code tools.

Collaborate with cross-functional teams including analysts, UI / UX designers, DevOps engineers, and product owners.

Translate mission requirements into technical implementations that meet security, performance, and scalability needs.

Ensure compliance with our customer and IC cybersecurity and accreditation standards (e.g., RMF, STIGs).

Basic Qualifications :

US citizenship is required per contract.

Bachelor's degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience or Master’s with 6-10 years of prior relevant experience.

Strong proficiency with the following technologies :

Web :  HTML, CSS, JSON, Ajax, and REST APIs

Object-oriented Programming :  Python, Java, or JavaScript.

Advanced Programming : Go

Front-end and Back-end Frameworks : React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte.

Cloud Development : AWS, Azure, or similar cloud platforms

Relational Database :  MySQL, PostgreSQL, or SQL Server

Operating System : Windows, Linux

Version Control System :  Git

Deep understanding of modern software design patterns and coding standards.

Experience architecting, developing, and delivering complex software systems into production.

Hands-on experience developing containerized applications with Docker and Kubernetes.

Experience deploying to and developing in classified cloud environments (e.g., C2S, AWS GovCloud).

Familiarity with DevSecOps tools and practices (e.g., GitLab CI / CD, Jenkins, SonarQube, Nexus, Terraform).

Solid understanding of Agile methodologies and secure software lifecycle principles.

Strong, self-motivated desire to learn new programming languages, tools, frameworks, and techniques.

Preferred Qualifications :

Frontend Web Development : UI / UX

NoSQL Database : OpenSearch / Elasticsearch.

Cloud Exposure :

Multi-cloud architectures : AWS, IBM, Google, Azure, and Oracle.

Specific AWS Services :  S3, SQS, SNS, EC2, CloudFormation and RDS.

Knowledge of geospatial data formats, tools, and standards (e.g., OGC, GeoServer, PostGIS, ESRI).

Experience with IC enterprise environments and tools (e.g., Keycloak, Vault, CloudFormation)

Certifications such as AWS Certified Developer, CISSP, Security+, SAFe Agile or similar.

#Chinook

Come break things (in a good way). Then build them smarter.

We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”

Original Posting : October 3, 2025

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 $104,650.00 - $189,175.00

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.