Mid-Senior Full Stack Developer

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: 9/17/2027

*
* 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 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 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 GraphQL 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 values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

** A focus on continuous growth.*
*…