Sarthak Pujari

Founder

Bengaluru, Karnataka, India4 yrs 1 mo experience

AI EnabledAI ML Practitioner

Key Highlights

Founder of interdisciplinary applied research lab.
Developed AI-based solutions for fintech.
Expert in generative AI and machine learning.

Stackforce AI infers this person is a Fintech and AI specialist with a strong focus on machine learning and generative AI.

Contact

Skills

Core Skills

Gtm EngineeringLeadershipGenerative AiAi EngineeringMachine Learning

Other Skills

Apache SparkC++Data AnalysisDeep LearningFraud ModelsGenerative AI for SalesJavaKerasManagementMatlabNumPyPandas (Software)Public SpeakingPySparkPython (Programming Language)

Experience

S45

All things AI

Aug 2025 – Present · 7 mos · Hybrid

Helping S45 become a new age AI-native Investment Bank.
Implementing AI workers for the best of the Investment Bankers.
Hiring Forward Deployed Engineers and AI Engineers (RL-based Agent Fine-tuning, Evaluation, Testing)! Please reach out.

Generative AIAI EngineeringLeadership

Z42 labs

Founder

Jul 2025 – Present · 8 mos · Bengaluru, Karnataka, India · Hybrid

Building an Interdisciplinary Applied Research Lab. Deploying AI workforce across all major sectors with a focus on creating real economic output.
Hiring Infra Engineers and AI Scientists! Please reach out at founders@z42labs.com
More information coming soon!

GTM EngineeringGenerative AI for SalesLeadershipManagement

Oobau

Co-Founder

Jun 2024 – Apr 2025 · 10 mos · San Francisco Bay Area · Hybrid

Oobau is an AI-native B2B lead generation company for growth-stage companies. ("outcome-as-a-service" company)
Productised sales and marketing workflows, built an internal GTM Engineering platform, developed custom MCP servers for Company and People Research (currently used daily of the best growth stage companies)
A few of our clients - Proshort.ai, Acante.ai, Synapse International, Videoselz, Fidemboard, QAPilot, Finrep, Origa, among others.

GTM EngineeringGenerative AIData Analysis

Mastercard ai garage

AI Engineer

Jul 2022 – Mar 2024 · 1 yr 8 mos · Gurugram, Haryana, India · On-site

Worked at Mastercard's AI and Product Innovation Lab, few major things I worked upon -
1. AI-Based Rule Cartridge
Designed and implemented a tree-based rule extraction system for transaction decisioning
Improved 3DS2 payment conversion by 5% and authorisation efficiency by 15%
Benchmarked models across Latin American banks: achieved 45% coverage at 2 bps, 43% at 1 bps
2. Foundational Models Team
Developed a custom tokeniser for transaction data pre-training (US PATENT)
Built supervised fine-tuning pipelines for Llama models on fraud and payments use cases
Created LLM agents for document extraction and reasoning tasks
3. Fraud Models
Wrote production-ready fraud detection code and led extensive testing
Ran pilots with global fintech companies, including Stripe, etc.
4. Represented Mastercard in the RBI Harbinger Challenge'23 Finals

Machine LearningDeep LearningFraud ModelsAI Engineering

Rendezvous

Core Team Member, Marketing

Dec 2021 – May 2022 · 5 mos · IIT Delhi

Sayf

Product and Tech

Jul 2021 – Jun 2022 · 11 mos

Mastercard ai garage

AI Research Intern

May 2021 – Jul 2021 · 2 mos · Gurugram, Haryana, India

Developed an Intermittent Demand Forecasting Model, beating the current State-Of-The-Art Model by 5% in RMSSE score
Implemented a Probabilistic, AR-based algorithm using weighted loss function; Performed benchmarking on M5 & UCI dataset
The above work got accepted in ICDM 2023 (AI4TS Workshop) - https://www.computer.org/csdl/proceedings-article/icdmw/2023/816400b591/1UjHZsbmxC8
Awarded PPO

Nus business school

Research Assistant

Jul 2020 – Aug 2020 · 1 mo

Worked with Prof. Karthik Narayan
Performed sentiment analysis using BERT by scraping 1M+ professors' reviews of 100+ colleges from ratemyprofessor.com
Operated extensive secondary research to analyse the Impact of Online Teaching on US-based Universities over 5 parameters