Open to opportunities

Varun Sarna

@vs01

Message

Senior AI/ML engineer specializing in scalable LLM platforms and AI reliability.

India

Message

What I'm looking for

I seek remote-first roles building scalable, reliable LLM platforms and RAG systems with strong emphasis on safety, observability, and cost-effective production deployment.

I am a Senior AI/ML Engineer with 13+ years building production systems under real constraints, focused on LLM platforms, retrieval-augmented systems, multi-model routing, and AI reliability.

I have designed and deployed production LLM orchestration platforms, implemented cost-aware execution policies, and built RAG systems that reduced hallucinations and inference costs significantly across domains.

At Deloitte I led HIPAA/SOX-compliant platforms, modernized systems serving millions of users, and contributed to a global audit platform used by thousands; earlier roles included product strategy, enterprise automation, and large-scale CRM systems.

I own end-to-end AI lifecycle work—architecture, deployment, monitoring, and iteration—with emphasis on safety, observability, and economically viable production systems rather than frontier-model research.

Experience

Work history, roles, and key accomplishments

Current

Senior AI/ML Engineer

Current

Independent

Aug 2023 - Present (2 years 5 months)

Designed and deployed production LLM orchestration and RAG platforms, cutting inference costs ~30–70% and reducing hallucinated responses ~25–60% while owning end-to-end AI lifecycle and monitoring.

Orchestration RAG LangGraph AWS Sagemaker Vector Databases Cost Optimization Observability

Consultant – Enterprise Digital

Deloitte

Mar 2019 - Jul 2023 (4 years 4 months)

Led enterprise cloud and digital implementations across healthcare, retail, and finance, architecting HIPAA/SOX-compliant microservices processing 100K+ daily transactions and reducing incidents by 55%.

Cloud Architecture Microservices HIPAA CI CD Scalability Stakeholder Management Security

Technology Consultant & Partner

Alhev

Mar 2016 - Mar 2019 (3 years)

Owned product strategy and delivery for three SaaS products, managed P&L and technical hiring, and automated enterprise infrastructure to reduce provisioning from days to minutes.

Product Strategy P&L management Infrastructure Automation Client Delivery

Applications Developer

Oracle India

Apr 2013 - Dec 2015 (2 years 8 months)

Built and operated enterprise CRM mobile and backend systems for 50K+ users, maintaining 99.9% uptime SLAs and improving production stability while mentoring junior engineers.

Java CRM Systems Backend Development Reliability Engineering SLA PostgreSQL

Software Engineer

Cognizant

Jan 2010 - Jan 2013 (3 years)

Developed enterprise SaaS and financial services platform components including SAML SSO and RESTful APIs, contributing to stable production deployments.

REST APIs SAML Enterprise SaaS Java Integration Financial Services