Senior Full Stack React Developer

ASRC Federal is seeking a senior full stack React developer to build and sustain Army web applications for CECOM ASIC at Aberdeen Proving Ground, MD. Position overview The Senior Full-Stack Developer will architect, develop, integrate, and maintain the platform and its backend plugins for CECOM ASIC. The developer will own platform capabilities end to end, including backend services, Software Catalog integrations, entity providers, custom processors, APIs, data persistence, authentication, and deployment pipelines. The developer will work in an Agile team with government analysts, UX developers, DevSecOps engineers, data scientists, and system administrators. The role will translate government requirements into secure, maintainable software and support releases, testing, accreditation activities, and sustainment. Responsibilities Design, develop, integrate, and sustain backend plugins, modules, entity providers, custom processors, and supporting services. Develop and maintain RESTful APIs and service integrations using TypeScript, Node.js, JavaScript, JSON, YAML, and OpenAPI/Swagger specifications. Develop integrations with GitLab APIs, webhooks, repositories, pipelines, and CI/CD workflows. Produce high-level software design, data and database design documents. Implement and sustain authentication and authorization capabilities using OAuth 2.0, OpenID Connect, Keycloak, and role-based access control. Deploy and sustain cloud-native services using Docker, Kubernetes, and AWS Elastic Kubernetes Service. Write unit and integration tests; support software and user acceptance testing. Apply DoD secure coding practices, DISA STIG requirements, and applicable accessibility requirements. Remediate vulnerabilities, scan findings, and software defects. Deliver releases through Git-based CI/CD and DevSecOps pipelines. Support code review, release documentation, technical reports, test reports, and engineering change proposals. Troubleshoot production issues and provide lifecycle sustainment for the platform and associated integrations. Mentor junior and mid-level developers. Lead technical decisions for platform architecture, plugin design, API integration, and data persistence. Required qualifications Bachelor's degree in Computer Science, Electronics Engineering, or another engineering or technical discipline. At least 5 years, within the last 8 years, designing, developing and maintaining software applications. At least 3 years developing production web applications using TypeScript, Node.js, JavaScript, and React. At least 3 years building production front ends in React. Experience working with analysts to gather requirements and build tools and interfaces from them. Experience designing and integrating RESTful APIs using JSON, YAML, and OpenAPI/Swagger. Experience setting operational specifications and analyzing software requirements. Active Secret security clearance (Tier 3 investigation) at start. Desired qualifications DoD 8140 / 8570 IAT Level II certification (Security+ CE or equivalent), or the ability to obtain one within 6 months of hire. TypeScript, Redux or React Query, and modern build tooling (Vite or Webpack, npm). Node.js, Entity Framework, and REST API design and documentation (OpenAPI/Swagger). CI/CD and DevSecOps experience: GitLab or Azure DevOps pipelines, SonarQube, Fortify, Docker. Experience integrating with EAMS-A or comparable enterprise identity and access-management capabilities. Cloud development in Azure or AWS, including Azure Government or AWS GovCloud. CAC/PKI authentication integration and DISA Application Security and Development STIG compliance. Experience with Section 508 or Web Content Accessibility Guidelines testing and remediation. Experience supporting Army or DoD developer platforms, software catalogs, API platforms, or enterprise application ecosystems. Agile/Scrum experience with Jira and Confluence.