PRODUCTION

DATA ENGINEER & GENAI SPECIALIST

I build AI systems
that hold up in production.

RAG chatbots that cut support load by 25%. Airflow pipelines running at 99.9% reliability. I design and ship data + AI infrastructure that doesn't break under real workloads.

10+Years Exp.
2IEEE Papers
5+Certifications
Saran Portrait
Available for hire

Saran Jaya Thilak

Data Engineer & GenAI Specialist

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🔗LangChain
🌊Airflow
🔧DBT
🗄️BigQuery
⚡FastAPI
🔮ChromaDB
☁️AWS
🐳Docker
⚙️Kubernetes
🏗️Terraform
🐘PostgreSQL
🚀Groq
🤗HuggingFace
🔥Prometheus
📊Grafana
▲Vercel
⚛️React
🔷TypeScript
🐍Python
📦Poetry
🧪MLflow

About Me

I engineer data
and AI systems

that scale.

I spent nine years keeping mission-critical infrastructure alive — first at Nokia, then at Huawei — managing telecom and cloud systems at 99.9%+ uptime, 24×7, with no tolerance for failure. That decade of operational discipline shaped how I think about reliability, observability, and what "production-ready" actually means.

Now, with an M.Sc. in Data Science and hands-on work at Tesla building RAG chatbots and Airflow pipelines, I bring that same infrastructure mindset to AI engineering. I build GenAI and data systems the way I once ran networks — with the assumption that they have to hold up under real load, not just in a notebook.

Experience

A decade of building.

2023–2025

Tesla

Data Engineer

Designed RAG-based LLM chatbots improving customer interaction efficiency by 25%, added guardrails (hallucination detection, response validation), and architected Apache Airflow ETL pipelines with 99.9% reliability and real-time alerting.
2021–2023🎓Education

University of Europe for Applied Sciences

M.Sc. Data Science

Completed a Master's in Data Science with a focus on machine learning, deep learning, and applied AI. Published two IEEE papers on ML-based prediction systems. Also completed the Le Wagon Data Science & AI bootcamp during this period, gaining intensive hands-on experience in production ML workflows.
2019–2021

Huawei

Cloud Support Engineer

Accelerated AWS cloud-native infrastructure with Terraform, implemented secure architectures (EC2, S3, Lambda, DynamoDB), and reduced AWS costs by ~20% through monitoring and optimization.
2016–2019

Huawei

Operations Team Leader

Executed 24×7 GOC operations supporting 99.9%+ availability across IP, transmission, mobile core, and RAN domains. Mentored junior engineers and reduced escalations by ~30%.
2014–2016

Nokia

Operations & Maintenance Engineer

Monitored statewide telecom infrastructure with 99.99% availability. Executed preventive and corrective maintenance on BTS, BSC, and transmission systems.
SYSTEM CLUSTER / 06 PRODUCTION DOMAINS

My Expertise.

Battle-tested data engineering pipelines, low-latency GenAI retrieval systems, and high-availability cloud architecture engineered to hold up under real-world production scale.
END-TO-END PRODUCTION TOPOLOGY

ACTIVE SYSTEM INSPECTOR / 02

Enterprise GenAI & RAG Systems

Hybrid retrieval with grounded, citation-backed responses. Building enterprise-grade GenAI & RAG platforms with sub-second latency, semantic + keyword search fusion, and robust hallucination guardrails using LangChain, FAISS, and cross-encoder reranking.

VERIFIED
ARCHITECTURE FLOWSUB-SECOND LATENCY · HYBRID RETRIEVAL
Query
Embed
FAISS Vector
Rerank
Grounded LLM
P99 LATENCY42 MS
GROUNDING99.4%
TOP-K8 DOCS
PRODUCTION GRADE

GROUNDING: VERIFIED

deployment: zero-downtime

guardrails: enabled

SYSTEM READYLATENCY BUDGET / < 50 MS

Featured Dashboard.

A curated selection of my most significant technical achievements, architected for performance and scale.

Multimodal RAG System
01
FeaturedProduction RAG + Conversational AI

Multimodal RAG System

A production-ready Multimodal Retrieval-Augmented Generation system that supports conversational querying over text and image data. Handles chunking, embedding, reranking, and grounded LLM responses with citation traces — designed for real deployment, not demos.

Problem
LLMs hallucinate on private, mixed-media data. Needed a grounded, citation-backed system that works on both text and images without fine-tuning.
Approach
Full pipeline — chunking, multimodal embeddings, FAISS retrieval, cross-encoder reranking, and grounded LLM generation via LangChain, prioritising retrieval over fine-tuning for data efficiency.
Result
Production-ready system with citation traces; architecture mirrors the setup that drove a 25% improvement in customer query efficiency.

Tech Stack

RAGMultimodalLangChainPythonLLMsVector DB
AI Product Matching System
02
FeaturedFAISS + Triton Inference + CLIP

AI Product Matching System

Developed an image-based product search engine using FAISS for vector similarity and a quantized CLIP model served via NVIDIA Triton Inference Server. Integrated MongoDB and Docker for fast, scalable product matching.

Problem
Text-based search fails for visual product catalogues. Needed sub-second image similarity search at scale without a heavyweight vector DB.
Approach
Quantized CLIP embeddings via NVIDIA Triton for low-latency inference; FAISS for ANN search to cut overhead vs. a full vector DB; MongoDB stores product metadata.
Result
25% vector DB efficiency boost and 30% match-accuracy gain over keyword search baselines.

Tech Stack

FAISSCLIPTritonMongoDBDocker
Car Manual RAG Assistant
03
FeaturedClosed-Domain PDF QA

Car Manual RAG Assistant

Domain-specific RAG over a single corpus of automotive PDFs. A focused proof-of-concept for constrained document QA — no multimodal retrieval, no general-purpose chat, just precise grounded answers from a closed source.

Problem
Car manuals are dense PDFs users rarely consult. Needed a natural-language interface that surfaces the right section instantly without hallucinating.
Approach
RAG over chunked PDF content — LangChain orchestration, sentence-transformer embeddings, and vector DB retrieval — so answers stay grounded in the manual, not LLM priors.
Result
Accurate, context-aware Q&A on domain-constrained documents; proves RAG viability as a fine-tuning alternative for closed-domain assistants.

Tech Stack

RAGLangChainEmbeddingsLLMsPython
Divvy Bikes – End-to-End Data Pipeline
04
FeaturedGCP | Terraform | Airflow | DBT

Divvy Bikes – End-to-End Data Pipeline

Built an end-to-end data pipeline on GCP using Terraform for infrastructure, Airflow for orchestration, and DBT for SQL transformations. Loaded data into BigQuery and visualized insights via Google Data Studio.

Problem
Raw bike-share trip data needed to move from cloud storage to a queryable, visualised layer reliably and repeatably — with no manual steps.
Approach
Infrastructure-as-code via Terraform on GCP; Airflow for scheduled orchestration; DBT for SQL transforms and testing; BigQuery as the warehouse; Looker Studio for dashboards.
Result
Fully automated end-to-end pipeline from raw GCS files to live dashboard; demonstrates production-grade data engineering discipline beyond just model code.

Tech Stack

GCPTerraformAirflowDBTBigQueryData Studio

More Projects

TypeScript | AI Tutor | A1–C1

German Learning App

AI-powered German learning platform with interactive lessons, vocabulary practice, pronunciation support, quizzes, and personalized learning from A1 to C1.

TypeScriptAINLPReact
Full-stack | APIs | Docker

Vanilla Steel Assessment

A full-stack assessment project demonstrating modern software engineering practices, including backend development, APIs, testing, containerization, and deployment.

PythonFastAPIDockerTestingCI/CD
Open Source

GitHub Contributions.

Shipping code consistently — building in public, one commit at a time.

Contributions
885
Longest Streak
17d
Current Streak
4d
Active Days
219
@saranjthilak
View Profile

My Certifications.

Amazon Web ServicesAssociate

AWS Certified Solutions Architect

OracleProfessional

OCI 2025 Certified Generative AI Professional

OracleAssociate

OCI 2025 Certified AI Foundations Associate

DeepLearning.AI / LangChainCertificate

LangChain Application Development

HashiCorpCertificate

Terraform Basics

UC Davis

SQL for Data Science

Build.
Ship.
Scale.

I design and deliver production-grade RAG systems, end-to-end MLOps pipelines, and scalable cloud data infrastructure — built to handle real workloads, not just demos. If you have a data or AI problem worth solving, let's get to work.

Calls
Available for calls upon request
Usually replies within a day.
Saran Jaya Thilak

© 2026 · Berlin, Germany