Subash Saajan J

• Built an agentic teaching assistant on LangGraph + Anthropic Claude that generates and batch-edits course content (assignments, quizzes, discussions, rubrics) with human-in-the-loop preview and approval before anything is saved.
• Designed an AI Evaluator that auto-grades student work against its rubrics, backed by a failure-retry queue for resilience and an instructor review UI to verify and adjust scores.
• Built a RAG layer over course materials on PostgreSQL + pgvector (embedding search, reranking, and long-term memory) grounding responses in each course's own content.
• Owned Canvas LMS integration end-to-end: course versioning, IMSCC import/export, gradebook sync, and bulk submission import; shipped via GitHub PR and CI/CD on AWS (ECS).

• Engineered full-stack applications for 5+ clients with React, Node.js, and Firebase: scalable architecture, secure authentication, and optimized data flows.
• Designed backend services with REST APIs, role-based access control, and structured validation pipelines for reliability and maintainability.
• Built admin dashboards with modular components and clean state management, letting non-technical teams manage content independently.

• An autonomous assistant that manages email and calendar through agentic workflows on LangGraph and Gemini 2.0 Flash.
• Hybrid long-term memory on PostgreSQL + pgvector for semantic search and RAG over persistent user context.
• Google Workspace APIs (Gmail, Calendar) via OAuth 2.0 + JWT, with human-in-the-loop approval for sensitive actions.
• Production cloud deploy on AWS (ECS Fargate, RDS, ALB) using Docker, Terraform, and CI/CD via GitHub Actions.

• Multi-tenant SaaS print platform serving self-service IoT vending machines and managed print shops from one shared backend, on Next.js 14 and Go (Fiber).
• Dual-agent system (a Raspberry Pi kiosk agent and a Windows shop agent with an embedded React dashboard) with job polling, smart color/B&W printer routing, and auto-update via GitHub Releases.
• Cashfree UPI payments with automated platform/vendor revenue sharing; deployed on a Linux VPS with Docker Compose and Nginx (TLS), CI/CD cross-compiling ARMv7 and Windows binaries per release.

Springer CCIS, presented at ASCIS 2024 (Marwadi University, Rajkot). A blockchain-enhanced geographic routing framework to strengthen location authentication and mitigate spoofing in VANETs. Awarded Best Paper. DOI: 10.1007/978-3-031-86302-8_25