Full Stack Developer (Backend-focused)
Haspaces Technology Solutions - Octagnt.ai · Feb 2026 – Present
- Architected tenant-scoped, data-isolated REST APIs in Node.js, Express, and TypeScript serving multiple enterprise organizations, with isolation enforced across every MongoDB query and endpoint.
- Designed cookie-based JWT authentication with automatic token renewal and RBAC spanning 4 roles and 8 permission modules; implemented a Dropbox OAuth handshake for third-party document ingestion.
- Built public, token-authenticated endpoints for direct-to-S3 video uploads with anti-cheat tracking and automated AI evaluation, exposing capability to unauthenticated external clients without weakening tenant isolation.
- Designed an orchestrator that runs configurable multi-step pipelines across 35+ specialized AI agents behind a unified gateway with path-based routing, keeping service contracts stable as agents were added.
- Engineered an AWS SQS-based async processing pipeline for bulk uploads of 50+ files with S3 storage, callback-driven entity extraction, status polling, and background monitoring.
- Implemented ATS synchronization of applications and candidates with deduplication and job-description linking, handling customization needs for enterprise clients.
- Built a weighted decision engine (D1-D9 dimensions) with automated qualification gates and multi-phase flows across assessment, voice screening, and one-sided interviews.
- Led low-level design of database schemas and API contracts, and optimized queries and request paths for latency and maintainability across services.
- Stood up a LocalStack S3/SQS environment with Docker Compose for parity with cloud infrastructure; authored endpoint and unit tests with Jest and Supertest using mocked repositories.
- Wired API contracts into the React frontend for candidate and recruiter dashboards, resolving state-handling and data-rendering issues so features shipped end to end.