Siona Ann Sam

AI Engineer specializing in agentic AI, RAG pipelines, and secure backend systems. Built and deployed 8+ production AI agents at Aimyze using LangChain, LangGraph, and AWS — cutting LLM latency 35% and token costs 28%. Combines LLM engineering with cybersecurity expertise (OWASP, prompt-injection defense, secure API design) to ship reliable, production-grade AI solutions.

AI Engineer Intern - Aimyze - Remote, India

(2026-01)

• Designed and shipped 8+ production agentic AI / multi-agent systems (Python, LangChain, GPT-4, Claude API) automating cross-functional workflows and decision support.
• Built RAG pipelines on AWS RDS + pgvector processing 500+ records/day at sub-300ms retrieval latency, applying data engineering best practices.
• Cut LLM inference latency 35% and token costs 28% through semantic caching, chain optimization, and batched embeddings.
• Engineered secure REST APIs (Node.js/Express) with JWT auth, refresh-token rotation, and RBAC; hardened against prompt injection via instruction-hierarchy enforcement, output validation, and canary-token detection.
• Managed AWS infrastructure (EC2, RDS, S3, Lambda, CloudWatch) sustaining 99.2% uptime.
• Partnered with cross-functional teams to define requirements and design scalable data pipelines, ensuring clear stakeholder communication.

B.Tech - Computer Science Engineering, Cybersecurity Specialization - Lovely Professional University (2022 - 2026)