The Role
Designs, builds, and maintains a secure internal Gatekeeper application supporting authentication, access control, configuration, validation, and operational workflows. Integrates React-based interfaces with MCP tools, OAuth authentication, access-control systems, and REST APIs. Responsibilities include secure secrets management, input validation, error handling, logging, troubleshooting, documentation, stakeholder collaboration, and production support while ensuring reliability, usability, and maintainability.
Summary Generated by Built In
Description
JOB DESCRIPTION
Developer, Gatekeeper App
The Developer, Gatekeeper App will design, build, and maintain a secure internal application that supports authentication, access control, and operational workflows for Gatekeeper use cases. This role is responsible for delivering a reliable, maintainable, and user-friendly experience that integrates with MCP, access-control systems, OAuth-based authentication, and related APIs.
Key Responsibilities- Design and build the Gatekeeper app using modern frontend development practices
- Implement interactive user flows for setup, configuration, validation, and status reporting
- Integrate with MCP tools, access-control systems, and OAuth-based authentication flows
- Develop secure API integrations with internal and external systems
- Manage environment variables, secrets, and configuration in a secure and maintainable way
- Add input validation, error handling, logging, and troubleshooting support
- Partner with stakeholders to refine requirements and improve workflow usability
- Ensure the application follows established security, reliability, and internal application standards
- Document behavior, setup steps, and operational considerations for maintainability
- React
- JavaScript or TypeScript
- MCP integration basics
- OAuth and access-control concepts
- REST API integration
- Secrets and configuration management
- Debugging and observability
- Security fundamentals
- UX for setup and operational workflows
- The app is secure, stable, and maintainable
- Authentication and access control work end to end
- Setup and configuration flows are clear and supportable
- API integrations are reliable and well documented
- Issues can be diagnosed and resolved efficiently
- Collaborates effectively with technical and non-technical stakeholders
- Communicates clearly and documents decisions and implementation details
- Takes ownership of quality, security, and operational readiness
- Balances speed of delivery with maintainability and supportability
Requirements
Required Qualifications- 3+ years of software development experience, or equivalent practical experience
- Strong experience with React
- Strong experience with JavaScript or TypeScript
- Experience building and maintaining web applications or internal tools
- Experience integrating with REST APIs and JSON-based services
- Familiarity with OAuth, authentication, and authorization concepts
- Familiarity with secure configuration and secrets handling
- Understanding of debugging, logging, and production support practices
- Working knowledge of security best practices, including least privilege and input validation
- Experience building internal enterprise applications or workflow tools
- Familiarity with access-control platforms or Zero Trust concepts
- Experience with MCP or similar tool-orchestration patterns
- Experience designing admin, setup, or configuration interfaces
- Experience supporting secure applications in an operational environment
Skills Required
- 3+ years of software development experience or equivalent practical experience
- Strong experience with React
- Strong experience with JavaScript or TypeScript
- Experience building and maintaining web applications or internal tools
- Experience integrating with REST APIs and JSON-based services
- Familiarity with OAuth, authentication, and authorization concepts
- Familiarity with secure configuration and secrets handling
- Understanding of debugging, logging, and production support practices
- Working knowledge of security best practices, including least privilege and input validation
- Experience building internal enterprise applications or workflow tools
- Familiarity with access-control platforms or Zero Trust concepts
- Experience with MCP or similar tool-orchestration patterns
- Experience designing admin, setup, or configuration interfaces
- Experience supporting secure applications in an operational environment
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The Company
What We Do
Advanced Sentry LLC is a veteran-owned workforce solutions provider anchored in security and staffing across various industries, delivering IT and operations staffing solutions.
