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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mid-Senior Full Stack Developer - **Company:** CACI International Inc. - **Location:** Denver, CO, United States - **Experience:** Experienced - **Salary:** $98,500.0 - $206,800.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Amazon Cloudfront, Code Review, CompTIA Security+, Continuous Integration, D3.Js, Data Security, Data Stores, Data Visualization, Elasticsearch, Design of User Interfaces, Human-Computer Interaction, Python (Programming Language), PostgreSQL, Node.Js, OAuth, OpenID, Open Web Application Security, Systems Development Life Cycle, Query Optimization, Role-Based Access Control, Red Hat Enterprise Linux, Redis, Webui, Systems Integration, TypeScript, Web Applications, Openapi, ReactJS, Flask (Web Framework), Spring-boot, Software Security, Kubernetes Helm Charts, Fastapi, Amazon Relational Database Service, Containerization, Gitlab-ci, Kubernetes, Information Technology, Integration Frameworks, Real Time Data, Graphql, React Redux, Api Design, Api Gateway, Restful APIs, Devsecops, Docker - **Published:** October 27, 2026 - **Apply:** https://www.careerbuilder.com/job-details/mid-senior-full-stack-developer-aurora-co--dba41a4d-51c3-4844-bfe6-84708a207886 ## About the Role Sensitive Compartmented Information (SCI), Top Secret Clearance, Willing to Travel, Application Programming Interface (API), Alliance/Partner Marketing, User Interface/Experience (UI/UX), Amazon Web Services (AWS), Government Requirements, Government Standards, Internet Application, Required: * Current TS/SCI clearance with Polygraph. * Bachelor's degree in Computer Science or related field, or equivalent experience. * 5+ years (mid-level) or 10+ years (senior-level) of full-stack software engineering experience. * Advanced proficiency in JavaScript/TypeScript and React, including Redux and Context API. * Strong experience building APIs with Node.js, Python (FastAPI/Flask), or Java (Spring Boot). * Proficiency with Docker - writing Dockerfiles, building hardened images, and integrating with CI/CD pipelines. * Familiarity with GitLab CI/CD, Helm, and Kubernetes deployment. * Comfortable working in an agile, distributed team environment. * Ability to travel up to 5%. Desired: * Experience with data visualization libraries such as D3.js or Recharts. * Familiarity with GraphQL federation and advanced API design patterns. * Experience with AWS services including ECS/EKS, API Gateway, CloudFront, and RDS. * Working knowledge of OAuth2, OIDC, mTLS, and modern API security patterns. * Knowledge of the OWASP Top 10 and STIG-compliant development practices. * Exposure to Elasticsearch query optimization and index management at scale. * Working knowledge of OAuth2, OIDC, mTLS, and modern API security patterns. * Knowledge of the OWASP Top 10 and STIG-compliant development practices. * Familiarity with RHEL 9 hardening and STIG compliance at the OS and container level. * Relevant certifications: AWS Developer Associate, CKAD, or CompTIA Security+. * What You Can Expect: A culture of integrity. ## Description As part of the Clairvoyant program, you will design and build the primary touchpoint between our platform and its customers - a sophisticated API layer and modern web UI delivering critical, real-time data to third-party partners. As a Mid-Senior Full Stack Developer, you will operate within a hardened, AWS-based, Kubernetes-native environment where modern interface standards meet strict government security requirements. This is a high-visibility role where you will: * Engineer the Interface: Build responsive web applications using React that visualize complex, real-time data sets for external customers. * Architect the API Layer: Design and maintain RESTful or GraphQL APIs supporting seamless third-party integrations at scale. * Secure the Stack: Implement OAuth2, OIDC, and mTLS protocols and ensure all code meets DISA STIG and OWASP standards. * Own the Lifecycle: Drive the full SDLC from agile requirements through automated CI/CD deployment on Kubernetes. Responsibilities: * Design and maintain responsive front-end applications using React, handling complex data visualization and high-concurrency use cases for external partners. * Build and maintain scalable RESTful and GraphQL APIs using Node.js, Python (FastAPI/Flask), or Java (Spring Boot) for third-party data access. * Implement authentication and authorization patterns including OAuth2, OIDC, mTLS, and RBAC to ensure secure external data access. * Design and optimize relational (PostgreSQL) and non-relational (Elasticsearch, Redis) data store interactions. * Containerize applications with Docker and deploy to Kubernetes on AWS in coordination with the DevSecOps team. * Ensure all code meets DISA STIG requirements and addresses the OWASP Top 10 throughout the development lifecycle. * Integrate with GitLab CI/CD pipelines and Helm charts for deployment across environments. * Conduct code reviews, provide technical guidance for junior developers, and serve as the SME for third-party API integration. * Maintain technical documentation, API specifications, and integration guides.