Open to opportunities

Karan Guleri

@karanguleri

Message

Senior Data Scientist driving fraud detection, predictive modeling, and analytics-driven cost savings.

Thailand

Message

What I'm looking for

I seek senior data science roles focused on fraud detection or predictive analytics where I can lead ML-driven solutions, cross-functional teams, and deliver measurable operational and financial impact.

I am a Senior Data Scientist with 6+ years of experience across banking, fintech, and startup ecosystems, specializing in fraud detection, real-time monitoring, and analytics validation. I design ML-driven solutions and risk scoring systems that translate into measurable business impact.

At HSBC and Puraido I led the development and deployment of IntelliFraud systems and realtime transaction logic, delivering a 40% improvement in fraud detection, 30% operational efficiency gains, and over $100K in annual savings through predictive modeling and decision intelligence.

I combine hands-on technical skills (Python, SQL, R) with strong cross-functional leadership to build validation workflows, optimize reporting accuracy, and drive data-informed decisions across analytics, QA, and product teams.

Experience

Work history, roles, and key accomplishments

Current

Lead Data Scientist

Current

Puraido

Apr 2025 - Present (5 months)

Designed real-time fraud detection logic for ATM and card transactions, reducing review time by 25% and improved reporting accuracy by building validation workflows reconciling Tableau with Redshift and source DBs.

Fraud Detection Python SQL Redshift Tableau Cross Functional Collaboration

Data Scientist

HSBC

Jul 2022 - Apr 2025 (2 years 9 months)

Developed the IntelliFraud system using machine learning and statistical models to improve fraud detection rates by 40% and created predictive models that raised operational efficiency by 30%, saving 200 man-hours monthly via SQL and Python optimizations.

Machine Learning Python SQL Server Fraud Detection Statistical Modeling SQL Optimization Automation)

Data Analyst Engineer

Samsung

Jun 2019 - Jul 2022 (3 years 1 month)

Performed data analysis and algorithm development to improve prediction accuracy for large loss claims by 40%, automated data workflows in Python, and applied time series analysis to inform forecasting and resource allocation, generating $100K in annual savings.

R Python SQL Data Cleaning Time Series Analysis Algorithm Development Data Validation Automation)

Education

Degrees, certifications, and relevant coursework

National Institute of Technology Hamirpur

Bachelor of Technology, Computer Science and Engineering

2015 - 2019

Completed a Bachelor's degree in Computer Science and Engineering with coursework and projects focused on algorithms, machine learning, and data engineering.