Summary
Overview
Work History
Education
Skills
Accomplishments
Certification
Languages
Websites
Timeline
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Karthik Tak

Bengaluru

Summary

Results-driven professional with extensive experience in fraud detection and risk management at LinkedIn. Eliminated 10,000 fraudulent accounts and improved process efficiency by 30% through data analysis and SQL proficiency. Skilled in mentoring teams and enhancing security protocols to safeguard platform integrity.

Overview

9
9
years of professional experience
1
1
Certification

Work History

Jobs Frauds - Trust and Safety

LinkedIn
Bengaluru
06.2022 - Current
  • Identified and eliminated 10,000 fraudulent member accounts efficiently and effectively.
  • Analyzed extensive data sets to detect and remove fraudulent ads, posts, and job listings, and improved process efficiency by 30%
  • Created complex queries to identify payment-related abuse occurring on the LinkedIn platform and reversed $ 330k worth of bad debts.
  • Worked closely with the Payment Abuse team to fill policy gaps and eliminate credit losses worth $200 million.
  • Used advanced data analysis techniques and complex queries to scrutinize large data volumes for fraud by creating rules for the machine learning team, and created 10+ machine learning rules.
  • Utilized SQL and other tools to detect hidden patterns of fraud, and proactively eliminate threats.
  • Monitored real-time data feeds to quickly identify and respond to emerging fraud threats.
  • Worked closely with externally outsourced security, legal, and customer service teams to implement fraud mitigation strategies and rules.
  • Resolved 4-5 JIRA tickets daily, and responded to real-time queries, ensuring smooth business operations.
  • Conducted detailed risk assessments on over 400 new and existing company pages on LinkedIn to rule out fraudulent content and maintain LinkedIn's integrity.
  • Created comprehensive Power BI reports to highlight vulnerabilities and recommend security improvements.

Trust & Safety Associate - Contract for Linkedin

Varite India Pvt Ltd
Bengaluru
04.2021 - 06.2022
  • Identified and removed 20,000 fraudulent job listings through comprehensive platform analysis.
  • Verified integrity of job postings using advanced algorithms and detailed manual reviews.
  • Investigated suspicious activities among LinkedIn members, closing over 10,000 noncompliant accounts.
  • Prevented more than 5,000 unauthorized account takeovers to safeguard legitimate member accounts.
  • Analyzed large datasets to detect fraud patterns, submitting over 100 reports to policy team.
  • Reported findings and contributed to enhancement of fraud detection processes.
  • Assessed risks of new features, identifying vulnerabilities and recommending over 20 process changes.
  • Recommended strategic actions to bolster platform security based on thorough risk evaluations.

Risk Mining Investigator

Amazon.com
Bengaluru
04.2019 - 04.2021
  • Applied advanced filters and logical operations to large datasets to detect patterns and anomalies, to action 3,000+ orders at a time, with a track record of an average of 98% accuracy.
  • Developed and optimized SQL queries to process large data volumes, ensuring efficient and accurate analysis.
  • Identified patterns indicative of fraud, such as unusual transaction behaviors and mismatched billing and shipping addresses, to create 100+ machine learning rules and logics.
  • Used statistical methods and machine learning algorithms to detect anomalies, suggesting potential fraud or scams.
  • Collaborated with customer service, legal, and IT security teams to strengthen fraud detection, and created 40+ full-time queuing filters that require no secondary manual review.
  • Created detailed reports on investigation findings and trends, with recommendations for enhancing the fraud detection process.

Transaction Risk Investigator - German

Amazon.com
Bengaluru
05.2017 - 03.2019
  • Processed over 100 items daily, achieving 95% quality in decision-making.
  • Designed audit methodologies to evaluate the effectiveness of internal controls.
  • Utilized advanced tools and algorithms to investigate fraudulent activities.
  • Monitored transactions for suspicious behavior, preventing 50 to 60 fraud cases daily.
  • Developed and enforced comprehensive fraud prevention policies with legal, customer service, and IT teams.

Assistant-Customer Support-Inbound

Myntra Jabong India Pvt. Ltd
Bengaluru
05.2016 - 04.2017
  • Addressed customer inquiries across multiple channels, including phone, email, and social media.
  • Provided accurate information on products, services, and company policies.
  • Reported issues and trends to management for process improvement.
  • Assisted in designing and implementing audit methodologies for customer support processes.
  • Contributed to risk assessments to identify potential issues in customer support.

Education

Bachelor of Commerce - Finance

S.R.N Adarsh College, Bangalore University
Bangalore
05.2016

High School Diploma -

Adarsh PU College
Banglore
03.2013

Skills

  • SQL
  • Data analysis skills
  • Business management
  • Mentoring
  • Microsoft Excel
  • Quality assurance
  • Build automation
  • Power BI
  • Tableau
  • Project leadership
  • SQL querying
  • Data visualization
  • Machine learning
  • Decision-making

Accomplishments

  • 5 Above and Beyond Awards for building complex queries
  • 3 Act as one LinkedIn for highlighting process gaps

Certification

  • SQL Intermediate certification from DataCamp

Languages

Hindi
First Language
English
Advanced (C1)
C1
Tamil
Beginner (A1)
A1

Timeline

Jobs Frauds - Trust and Safety

LinkedIn
06.2022 - Current

Trust & Safety Associate - Contract for Linkedin

Varite India Pvt Ltd
04.2021 - 06.2022

Risk Mining Investigator

Amazon.com
04.2019 - 04.2021

Transaction Risk Investigator - German

Amazon.com
05.2017 - 03.2019

Assistant-Customer Support-Inbound

Myntra Jabong India Pvt. Ltd
05.2016 - 04.2017

Bachelor of Commerce - Finance

S.R.N Adarsh College, Bangalore University

High School Diploma -

Adarsh PU College

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