Leidos

Builds technology for defense and civil agencies

Full Stack Developer

Full-Stack EngineeringUpdated on Nov 9

Full-timeArlington County, Arlington, VA, USA$107.9k - $195.1k

About the Job

Requirements

U.S. citizenship and an active Department of Defense Top Secret/Sensitive Compartmented Information clearance are required.
A bachelor's degree and at least 12 years of directly relevant technical experience are required; additional experience may be considered in lieu of a degree.
At least 6 years of experience designing, building, and modifying standalone application software are required.
At least 3 years of experience designing and developing infrastructure as code using Ansible, Terraform, and AWS CloudFormation are required.
At least 5 years of experience developing in an Agile environment are required.
At least 5 years of experience working in an AWS cloud environment are required.
At least 5 years of experience working in a virtual infrastructure are required.
Proficiency in JavaScript, jQuery, Bootstrap, REST APIs, Java, Visual Studio, Node.js, React, JSON, HTML, CSS, and XML is required.
Extensive experience in development, APIs, and scripting language support is required.
Experience implementing and maintaining services in a CI/CD pipeline is required.
Experience with code repositories such as GitLab is required.

Responsibilities

Develop Java-based applications using the Spring Framework, Spring Boot, Java, and Hibernate.
Develop front-end applications using Ansible, React, jQuery, JSON, TypeScript, JavaScript, HTML, and CSS.
Develop service-oriented architecture applications using RESTful services, enterprise service buses, and message queues.
Develop, document, and implement a continuous integration and continuous delivery strategy for managing the infrastructure-as-code baseline using Ansible, AWS CloudFormation, and Terraform.
Use DevOps tools such as GitLab, GitLab CI, Jenkins, and JFrog Artifactory or similar artifact repositories, as well as automated testing tools such as Selenium and Leapwork.
Provision and manage AWS infrastructure, including virtual private clouds, subnets, availability zones, firewalls, network access control lists, security groups, and hybrid connectivity.
Develop applications using AWS services such as EC2, RDS, Lambda, SNS, SQS, S3, and Directory Services.
Identify requirements and develop, document, and implement a branching strategy to support change-management requirements.
Review, debug, and resolve technical issues throughout all stages of the software development life cycle.
Assist with process development and improvement for Security Operations, including creating or modifying standard operating procedures, playbooks, and work instructions.
Measure the effectiveness of process improvement and automation efforts using metrics and key performance indicators.
Analyze user needs and software requirements to assess design feasibility within time and cost constraints.
Apply coding and testing standards, security-testing tools including fuzzing and static-analysis code-scanning tools, and threat modeling; conduct code reviews.

Desired Qualifications

Experience working in virtual environments.
Experience working with AWS and Azure.
Experience authoring standard operating procedures, playbooks, work instructions, or other process documents.

Leidos is seeking an experienced Full Stack Developer to support the Compartmented Enterprise Services Office (CESO) program delivering mission-focused software capabilities for DISA. This role develops, tests, and maintains secure, reliable applications across the full technology stack (front-end, APIs/services, and data). Full stack developers can switch between front-end and back-end development based on requirements and help the team prototype rapidly when needed. This person should be a seasoned, self-motivated, and professional with at least 8 years of hands-on engineering and administration experience in virtualized Information Technology environments.

This position is 100% on-site in Arlington, VA. Occasional, situational travel within the DC-Metro area may be required.

Primary Responsibilities

Develop Java based applications using Spring Framework, Spring Boot, Java, and Hibernate technologies.
Develop front end applications using Ansible, React, jQuery, JSON, TypeScript, JavaScript, HTML, and CSS technologies
Develop Service Oriented Architecture (SOA) applications using RESTFul, ESB, and Message Queues.
Develop, document, and implement CI/CD strategy for management of Infrastructure as Code (IaC) baseline using Ansible, AWS CloudFormation, and Terraform.
Experience in using DevOps tools such as GitLab, GitLab CI, Jenkins, JFrog Artifactory or similar Artifactory, Automated testing tools such as Selenium, and Leapwork.
Experience in provisioning and managing AWS Infrastructure such as VPCs, subnets, availability zones, Firewalls, NACL, Security Groups, and hybrid connectivity.
Experience in developing applications using AWS Services such as EC2, RDS, Lambda, SNS, SQS, S3, and Directory Services.
Identify requirements, develop, document, and implement branching strategy to support change management requirements.
Review, debug, and resolve technical issues throughout all stages of SDLC
Assist with process development and process improvement for Security Operations to include creation/modification of SOPs, Playbooks, and Work instructions
Measure effectiveness of process improvement and automation efforts via metrics and KPIs
Analyze user needs and software requirements to determine feasibility of design within time and cost constraints.
Apply coding and testing standards, security testing tools (including ‘fuzzing’ static-analysis code scanning tools), threat modeling, and conducts code reviews.

Basic Qualifications

U.S. Citizenship and active DoD TS/SCI US Clearance.
Bachelor's Degree and a minimum of 12 years of directly relevant technical experience. Additional experience may be considered in lieu of degree.
6+ years' experience with designing, building and modifying standard-alone application software
3+ years of experience in designing and developing IaC using Ansible, Terraform, and AWS CloudFormation
5+ years' experience developing in an Agile environment.
5+ years' experience working in AWS Cloud environment.
5+ years' experience working in a Virtual infrastructure
Proficient in JavaScript, jQuery, Bootstrap, REST API, Java, Visual Studio, Node.js React, JSON, HTML/CSS, XML
Extensive experience in development, APIs, and scripting language support
Experience implementing and maintaining services in a CI/CD pipeline
Experience with Code repositories - i.e. GITLAB

Preferred Qualifications

Experience working Virtual environments
Experience working in AWS and Azure
Authoring SOPs, playbooks, work instructions and/or other process document

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:

September 15, 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.

About the Company

Leidos

Builds technology for defense and civil agencies

Leidos develops technology and runs services for defense, intelligence and civilian agencies, as well as healthcare and commercial customers. It combines software and engineering work with systems integration, building secure networks and equipment used in demanding operations. Its portfolio includes medical services, energy infrastructure design and technology that supports military missions, linking specialist businesses under one parent. Customers pay through contracts for delivered systems and services, with payment tied to labor, costs or agreed project milestones. Leidos traces its roots to a company founded in 1969 and is headquartered in Reston, Virginia.

Company size: 10,001+
Company stage: IPO
Headquarters: Reston, VA
Founded: 1969

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