NS2 Full Stack Developer - Top Secret, CI Polygraph

Location and Clearance

Location - Onsite in Springfield, VA.

Top Secret, CI Polygraph Required.

Must be a U.S. citizen; SAP NS2 does not offer Visa sponsor ships for this role.

The system runs on an SAP HANA database persistence cluster layer, a SAP CAP Node.js / Express middleware layer containerized via Docker and deployed to Red Hat Open Shift on RHEL infrastructure, and a browser-based UI for interactive analysis with API maintenance support. Enterprise PKI certificate integration is required for secure communications across all tiers. Data ingestion and management across the tiers will also be required.

We are seeking a mid-level full stack developer who can independently build, deploy, and support a production‑grade monitoring application across the full technology stack. The ideal candidate is comfortable working across the database, server, and front‑end tiers with minimal supervision, and has hands‑on experience with SAP HANA or equivalent enterprise database platforms. This role requires strong problem‑solving ability, a security‑first mindset, and the capacity to translate scientific data requirements into working software.

• Build and maintain RESTful API endpoints on Express.js for CRUD operations, ETL image ingest, and analytics retrieval
• Implement service layer patterns within the Node.js middleware for SAP HANA connectivity
• Develop image processing pipelines using OpenCV (opencv‑wasm) and PNG/JPEG decoding libraries
• Containerize the application using Docker for deployment to Red Hat Open Shift
• Implement server‑side error handling, structured logging, and health‑check endpoints
• Write and maintain automated tests for API endpoints and data processing functions
• Build an interactive browser‑based UI for image comparison, side‑by‑side viewing, and change‑event overlay display
• Implement location browsing, image series selection, and raster visualization interfaces
• Develop auto‑alignment and landmark detection visualization tools integrated with backend APIs
• Ensure responsive design across desktop and tablet form factors
• Implement client‑side authentication flows and session management
• Integrate X.509 PKI certificates for mutual TLS (mTLS) authentication between application tiers
• Configure certificate‑based authentication for SAP HANA on‑premise connections and service bindings
• Implement certificate rotation procedures and expiration monitoring
• Support CAC/PIV smart card authentication workflows where required by the operating environment
• Troubleshoot TLS handshake failures, certificate chain issues, and trust store configuration across Node.js, Docker, and RHEL/Open Shift environments
• Maintain Docker build configurations and container image pipelines on Open Shift Container Registry
• Support deployment automation scripts (Power Shell/Bash) for Open Shift and static hosting
• Administer and maintain Red Hat Enterprise Linux (RHEL) application servers
• Monitor application health and implement alerting within the Open Shift platform
• Manage environment configuration, secrets, and deployment workflows across dev/staging/production
• Develop and maintain SAP HANA stored procedures for data ingest, feature extraction, analytics pipelines, and change scoring functions
• Design and optimize table schemas for vector storage, image metadata, location records, and computed analytics
• Implement connection pooling via the SAP HANA client driver with secure credential management
• Write and tune SQL queries and SQLScript procedures for high‑volume image data processing
• Support data migration, schema versioning, and production database maintenance

• 3–5 years of professional software development experience
• Proficiency in JavaScript/Node.js with Express.js framework
• Working experience with SAP HANA (on‑premise) or comparable enterprise database platforms
• Experience writing SQL and stored procedures for data transformation and analytics
• Front‑end development skills (HTML5, CSS3, vanilla JS or a modern framework such as React/Vue)
• Hands‑on experience with Docker containerization and container registries
• Understanding of PKI concepts: X.509 certificates, certificate chains,…