Mid-Senior Full Stack Developer Security Clearance

Position: Mid-Senior Full Stack Developer with Security Clearance
Job Title:

Mid-Senior Full Stack Developer Job Category:
Engineering Time Type:
Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type:
Regular Percentage of

Travel Required:

Up to 10% Type of Travel:
Continental US Anticipated Posting End: 8/31/2026

The Opportunity:

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 Graph

QL 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 Graph

QL 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 (Postgre

SQL) and non-relational (Elasticsearch, Redis) data store interactions.

* Containerize applications with Docker and deploy to Kubernetes on AWS in coordination with the Dev Sec Ops  team.

* Ensure all code meets DISA STIG requirements and addresses the OWASP Top 10 throughout the development lifecycle.

* Integrate with Git Lab 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.

Qualifications:

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/Type Script 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 Git Lab 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 Graph

QL federation and advanced API design patterns.

* Experience with AWS services including ECS/EKS, API Gateway, Cloud Front, 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. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation. An environment of trust. CACI…