n
nivakaran

Nivakaran S

@nivakaran

AI Engineer: LangGraph Agents, LLM Apps and Full Stack

Sri Lanka
English, Tamil, Sinhala
About me
I am a Full Stack AI Engineer engineering end-to-end, production-ready platforms. I specialize in secure backend infrastructure, custom machine learning integrations, and mobile deployments. My expertise includes architecting healthcare applications, managing vector databases (pgvector), integrating local LLMs (LangChain), ensuring HIPAA compliance with tamper-proof logging, and deploying final Android builds to the Play Store. Tech Stack: Python, PyTorch, PostgreSQL, Docker, and Mobile UI integration. If you need a secure, data-sensitive AI product launched, let's talk.... Read more

Skills

n
nivakaran
Nivakaran S
Offline • 

See my services

Full Stack Web Applications
I will develop a full stack applications
From$30 / projectMore details
AI Integrations
I will build custom ai agents and multi agent workflows with langgraph
From$200 / projectMore details

Portfolio

Work experience

Confidential

Associate AI Engineer

Confidential • Full-time

Mar 2026 - Present • 8 mos

- AI agent safety: designed deterministic agent harnesses with fail-closed security and workflow-level permissions for a clinical platform. - Compliance engineering: built tamper-evident, long-retention access logging to meet HIPAA requirements. - Full stack and mobile: shipped the Android app to Google Play and redesigned the over-the-air update architecture to close operational and security gaps. - Clinical workflow: worked with clinical reviewers on patient-facing alert design and regulatory constraints. - Built ML prediction pipelines.

HealthRecon_Connect

Collections Associate

HealthRecon Connect • Full-time

Jan 2026 - Jul 2026 • 6 mos

- Followed up on outstanding healthcare accounts to support efficient collections and reimbursement processes. - Researched unpaid claims and account discrepancies to identify issues affecting payment resolution. - Collaborated with insurance payers and internal teams to resolve billing and account-related concerns. - Documented account actions clearly and maintained accurate records across collection workflows. - Assisted in managing denials, delays, and reimbursement follow-ups within operational timelines. - Contributed to daily collections performance in a structured, target-oriented environment

Healthcare

Medical Documentation Specialist (Medical scribe)

Healthcare • Full-time

Jun 2022 - Dec 2024 • 2 yrs 6 mos

- Worked as the primary scribe for a US cardiologist, and have worked with multiple US providers across multiple specialties, documenting real-time patient encounters, diagnoses, transcriptions and treatment plans at Medsource Healthcare LLC. - Trained and supervised junior scribes in EHR systems, cardiology-specific terminology and efficient content capturing protocols. - Structured and managed high-volume clinical datasets (e.g., echocardiograms, medications, lab results) - Collaborated with doctors to summarize complex medical histories into actionable clinical notes, improving data usability. - Optimized clinical workflow by reducing documentation time.