Full Stack Developer

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 ResponsibilitiesDevelop 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 technologiesDevelop 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 SDLCAssist with process development and process improvement for Security Operations to include creation/modification of SOPs, Playbooks, and Work instructionsMeasure effectiveness of process improvement and automation efforts via metrics and KPIsAnalyze 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 QualificationsU.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 software3+ years of experience in designing and developing IaC using Ansible, Terraform, and AWS CloudFormation5+ years' experience developing in an Agile environment.5+ years' experience working in AWS Cloud environment.5+ years' experience working in a Virtual infrastructureProficient in JavaScript, jQuery, Bootstrap, REST API, Java, Visual Studio, Node.js React, JSON, HTML/CSS, XMLExtensive experience in development, APIs, and scripting language supportExperience implementing and maintaining services in a CI/CD pipelineExperience with Code repositories - i.e. GITLABPreferred QualificationsExperience working Virtual environmentsExperience working in AWS and AzureAuthoring SOPs, playbooks, work instructions and/or other process documentIf 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, 2026For 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 - $195,050.00The 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.SummaryLocation: Arlington, VAType: Full time