RIVA Solutions supports the Department of Health and Human Services (HHS) Program Support Center (PSC) modernization efforts under the Financial Management Platform (FMP) initiative. This program focuses on migrating legacy financial and administrative systems to secure, scalable cloud-based environments to enhance efficiency, transparency, and audit readiness across HHS. RIVA Solutions is seeking a Senior Back-End Engineer to support the migration and modernization of federal financial systems. The developer will play a key role in transitioning from an existing legacy mainframe system to a new cloud-based architecture.
Requirements
- Strong hands-on experience with RESTful API design and Nest.js/Express.js frameworks.
- Expertise in PostgreSQL and TypeORM, including schema design and query optimization.
- Proficiency in containerization (Docker) and CI/CD pipeline support.
- Experience implementing authentication and authorization frameworks (Keycloak, JWT).
- Strong JavaScript/TypeScript proficiency and knowledge of design patterns.
- Familiarity with Node-RED for workflow automation.
- Experience with Apache Superset or Apache Tika integrations.
Responsibilities
- Architect, design, and develop backend services and RESTful APIs using Node.js with Express.js or Nest.js, ensuring scalability and performance.
- Own end-to-end backend feature development — from design to testing, deployment, and optimization.
- Implement secure authentication and authorization using Keycloak and JWT.
- Design and optimize database schemas and queries using PostgreSQL and TypeORM.
- Utilize Docker to package, deploy, and run backend services; support CI/CD improvements.
- Implement caching, versioning, and encryption mechanisms within Nest.js to ensure secure and performant services.
- Develop and maintain workflow automation and rule-based processing using Node-RED.
Other
- Must be a U.S. Citizen and able to obtain and maintain a Public Trust clearance
- Collaborate across infrastructure, security, DevOps, and product teams to deliver robust solutions.
- Mentor junior developers and promote adherence to clean architecture standards.
- Apply DevSecOps principles throughout the development lifecycle.
- Excellent problem-solving and communication skills.
