AI Observability Architect at PepsiCo with 14+ years in enterprise engineering. I help teams turn fragile LLM demos into RAG and AI systems that stay reliable, measurable, and cost-efficient in production.

PepsiCo · AI Observability Architect
OpenTelemetry Certified (OTCA)
IEEE-published · LLM fine-tuning
M.Tech, BITS Pilani — LLM alignment

Or email me directly: contact@soumendrak.com

Experience across

PepsiCo
Freshworks
IBM
Wipro
Accenture
TCS

What I help teams with

AI Observability Review

Trace coverage, eval gaps, token cost visibility, latency, and OpenTelemetry instrumentation for LLM, RAG, and agent systems.

See the review offer →

Production RAG

Retrieval that holds up under real queries — from Naive RAG to Advanced, Graph, and LightRAG — tuned for accuracy instead of demo-day luck.

The evolution of RAG systems →

LLM Evaluation

Evaluation that maps to real-world performance without burning your budget — avoiding the hidden costs and biases of LLM-as-a-Judge.

The hidden cost of LLM-as-a-Judge →

What colleagues say

"Drove Wipro's HOLMES Cognitive Search from inception through production rollouts — handling customer deliveries single-handedly and improving its accuracy."

— Arvind Pattar, Director, Technology & Services, WNS

"A quick learner who consistently delivered quality work on schedule, with genuine leadership qualities and always ready to take on more."

— Nirmal Singh, Associate Director, UBS

"A tech powerhouse who transformed our MLOps at Freshworks — he architected and shipped customer-ready AI within a quarter."

— Sayan Nayak, Principal Engineer, Atlassian

"One of the best in his field. He leads by example, and his skills helped us boost productivity and hit every deliverable."

— Aman Jain, AI Architect, ZS

"His ability to scan a new technology, build a prototype and demo it is praise-worthy. He leads by example — a great Technical Leader."

— Manu Kuchhal, Global Engineering Leader, IBM

"A self-motivated, results-oriented engineer with strong full-stack depth who mentored my team in new technology."

— Muniyandi Perumal, Associate Director, Kyndryl

"Extremely hard-working and intelligent — he took on the toughest tasks and automated the most complex parts of our system."

— Rashmi Singh, Staff Software Engineer, Visa

"His NLP prowess and go-to attitude made him a great team member on our Cognitive Search platform — and a continuous learner."

— Udit Chandna, Product Manager, Salesforce

More recommendations →

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Selected work

Latest Posts

13 January 2026

Pinned

How to become an OpenTelemetry Certified Associate (OTCA)

How did I become an OpenTelemetry Certified Associate (OTCA)? My journey to certification.

20 June 2026

The Trends of Engineering in AI: Prompt, Context, Harness, Loop, and Evaluation

AI LLM Prompt Engineering AI Agents Observability

What’s the difference between prompt engineering, context engineering, harness engineering, loop engineering, and evaluation engineering? A side-by-side comparison with diagrams for AI engineers building production systems.

10 June 2026

Who Am I?

Philosophy Buddhism Self Consciousness Indian Philosophy

On rivers, cells, chemistry teachers, and the illusion of a permanent self: a non-technical exploration of identity, impermanence, and the observer within.

All posts ⟶