SAP is the global market leader for business software and related services. SAP National Security Services Inc.® (SAP NS2®) is an independent U.S. subsidiary of SAP. At SAP NS2, we leverage best-in-breed technologies engineered by SAP to protect the lives, assets, and information of Americans. We offer SAP solutions with specialized levels of security and support to meet the requirements of U.S. national security and critical infrastructure customers.

This position requires access to customer data.

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

All internals must have manager’s approval to transfer. 

Location - Onsite in Springfield, VA

Top Secret, CI Polygraph required.

Program Overview
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 OpenShift 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.

Role Summary
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.

Key Responsibilities
Node.js / Express Middleware Development
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 OpenShift
Implement server-side error handling, structured logging, and health-check endpoints
Write and maintain automated tests for API endpoints and data processing functions
Front-End UI Development
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
Enterprise PKI / Certificate Integration
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/OpenShift environments
DevOps & Deployment Support
Maintain Docker build configurations and container image pipelines on OpenShift Container Registry
Support deployment automation scripts (PowerShell/Bash) for OpenShift and static hosting
Administer and maintain Red Hat Enterprise Linux (RHEL) application servers
Monitor application health and implement alerting within the OpenShift platform
Manage environment configuration, secrets, and deployment workflows across dev/staging/production.
SAP HANA Database Integration
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
Required Qualifications
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, TLS/mTLS, trust stores
Experience with Red Hat Enterprise Linux (RHEL) system administration and OpenShift container platform
Familiarity with RESTful API design and implementation
Strong troubleshooting and debugging skills across the full stack
Version control proficiency with Git and GitHub-based workflows

Preferred Qualifications
Direct experience with SAP HANA on-premise and SQLScript stored procedure development
Experience with SAP HANA or other database development environments.
Image processing experience (OpenCV, pixel analysis, raster manipulation)
Experience with ETL pipeline tools (Apache NiFi, KNIME, Airflow, or Talend)
Familiarity with vector similarity operations (cosine similarity, euclidean distance) for data comparison
Experience implementing CAC/PIV smart card authentication in web applications
OpenShift deployment automation (Operators, Helm charts, or scripted CI/CD pipelines)
Prior work supporting government or defense programs
RHEL system hardening, SELinux policy management, and FIPS 140-2 compliance experience
Experience with D3.js, Three.js or WebGL for data visualization

Technology Stack Reference
The following technologies comprise the current production environment:

Database

SAP HANA (on-premise), SQLScript, Stored Procedures, Scalar Functions

Middleware

Node.js, Express.js, SAP HANA client driver, OpenCV (WASM), pngjs

Front End

HTML5 Web Stack, SPA frameworks such as Vue, React or Angular, D3 / Three.js / WebGL for visualization

Infrastructure

Docker, Red Hat OpenShift, RHEL 8/9, OpenShift Container Registry

Security

Enterprise PKI/X.509 certificates, mTLS, environment-based secrets

ETL / Data

Apache NiFi, KNIME, Airflow, Talend (integration points)

DevOps

Git/GitHub, PowerShell/Bash deploy scripts, Docker Compose

SAP Platform

SAP HANA on-premise, XSA, HANA service layer

SAP National Security Services, Inc. (SAP NS2)

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