I'm Rajkumar Rajalingam, an analytical and detail-oriented AI Training Specialist with a proven ability to evaluate and refine LLM outputs for accuracy, safety, and helpfulness. I'm an expert in RLHF (Reinforcement Learning from Human Feedback) workflows, specializing in identifying factual inconsistencies and linguistic nuances. I'm committed to improving model performance through high-quality data annotation and rigorous response ranking to ensure objective, high-utility AI interactions. In my freelance work, I annotate data and train AI systems in Tamil and Indian English, evaluate AI content for text and images, and design scalable automation and web-scraping solutions. I collaborate with cross-functional teams to deliver practical, ethical data strategies and policy guidelines, while mentoring others in best practices for data safety, SOPs, and HIPAA compliance.

Rajkumar Rajalingam

I'm Rajkumar Rajalingam, an analytical and detail-oriented AI Training Specialist with a proven ability to evaluate and refine LLM outputs for accuracy, safety, and helpfulness. I'm an expert in RLHF (Reinforcement Learning from Human Feedback) workflows, specializing in identifying factual inconsistencies and linguistic nuances. I'm committed to improving model performance through high-quality data annotation and rigorous response ranking to ensure objective, high-utility AI interactions. In my freelance work, I annotate data and train AI systems in Tamil and Indian English, evaluate AI content for text and images, and design scalable automation and web-scraping solutions. I collaborate with cross-functional teams to deliver practical, ethical data strategies and policy guidelines, while mentoring others in best practices for data safety, SOPs, and HIPAA compliance.

Available to hire

I’m Rajkumar Rajalingam, an analytical and detail-oriented AI Training Specialist with a proven ability to evaluate and refine LLM outputs for accuracy, safety, and helpfulness. I’m an expert in RLHF (Reinforcement Learning from Human Feedback) workflows, specializing in identifying factual inconsistencies and linguistic nuances. I’m committed to improving model performance through high-quality data annotation and rigorous response ranking to ensure objective, high-utility AI interactions.

In my freelance work, I annotate data and train AI systems in Tamil and Indian English, evaluate AI content for text and images, and design scalable automation and web-scraping solutions. I collaborate with cross-functional teams to deliver practical, ethical data strategies and policy guidelines, while mentoring others in best practices for data safety, SOPs, and HIPAA compliance.

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Language

Work Experience

Freelancer at Self-Employed / Freelancer
November 1, 2018 - Present
Data Annotation & AI Training; AI Content Evaluator; Advanced AI Tamil data trainer; Web Scraping: extracted over 250K LinkedIn profiles and 200K YP.com profiles; Consultancy; Thesis Writing; Data Entry & Accounting; Company Policy Writing; Lead Generation; Tamil copywriting.
Head - Process Excellence at Mobius365 Knowledge Services Pvt. Ltd.
August 1, 2012 - February 28, 2013
Designed process workflows for new projects, studied automation feasibility, and managed project transitions. Led phone pinging operations, processing over 40M phone numbers and optimizing costs. Coordinated with tech and operations teams for seamless tool development and implementation.
Sr. Process Manager at 365 Media Pvt. Ltd.
August 1, 2012 - February 28, 2013
Defined process flows for new projects and ensured smooth transitions to production teams.
Director at Avatar Petrochemicals Pvt. Ltd.
February 1, 2011 - May 31, 2012
Managed finance and invoicing for petroleum products; billing and logistic clearance.
Head – Software & Automation at 365 Media Pvt. Ltd.
December 1, 2009 - February 28, 2011
Supervised internal software and data harvesting operations; developed custom interfaces and products based on business needs.
Manager – Data Delivery at 365 Media Pvt. Ltd.
December 1, 2007 - January 31, 2009
Led data validation, analysis, and migration projects using SQL, Java, and regex-based tools; managed web harvesting and quality assurance processes.
Sr. Internet Researcher at 365 Media Pvt. Ltd.
March 1, 2007 - December 31, 2007
Oversaw complex database maintenance, content creation, and quality control.
Internet Researcher at 365 Media Pvt. Ltd.
February 1, 2006 - March 31, 2006
Conducted web research, data analysis, and SGML tagging.
Representative at Qualigens Fine Chemicals
January 1, 2005 - January 31, 2006
Company overview; oversaw sales and marketing of microbiology-related products in Tamil Nadu.
Assistant Editor – Technical Development at Macmillan India Pvt. Ltd.
January 1, 2004 - June 30, 2004
Managed technical editing of international research journals, proofing articles for HTML, SGML, and XML compliance including Nature Biotechnology and Immunology journals.
AI Training Specialist / Freelancer at Freelancer
November 1, 2018 - Present
Data annotation & AI training for Tamil and Indian English; AI content evaluation for text and images; Advanced AI Tamil data trainer; Web scraping; Consultancy on bot development, process flow design, automation strategies (RPA); Thesis writing support; Data entry & accounting; Policy writing; Lead generation; Copywriting and proofreading.
Data and Analytics Architect at Aggregate Intelligence Pvt. Ltd.
October 1, 2017 - November 1, 2018
Analyzed hotel industry data to develop innovative products based on dynamic pricing trends.
Head – Process Excellence at Mobius365 Knowledge Services Pvt. Ltd.
August 1, 2012 - February 1, 2013
Designed process workflows for new projects, studied automation feasibility, and managed project transitions. Led phone pinging operations, processing over 40M phone numbers and optimizing costs. Coordinated with tech and operations teams for seamless tool development and implementation.
Sr. Process Manager at 365 Media Pvt. Ltd.
February 1, 2011 - May 1, 2012
Defined process flows for new projects and ensured smooth transitions to production teams.
Representative at Qualigens Fine Chemicals (Thermo Fisher)
January 1, 2005 - January 1, 2006
Oversee sales and marketing of microbiology-related products in Tamil Nadu.

Education

M.Sc., Biotechnology at Ponnaiyah Ramajayam College, Bharathidasan
January 1, 2003 - January 4, 2026
B.Sc., Microbiology at N.S. College of Arts and Science, Madurai
January 1, 2001 - January 4, 2026
M.Sc. Biotechnology at Ponnaiyah Ramajayam College, Bharathidasan
January 1, 2003 - January 4, 2026
B.Sc. Microbiology at N.S. College of Arts and Science, Madurai
January 1, 2001 - January 4, 2026

Qualifications

Elements of AI (MinnaLearn)
May 1, 2025 - January 4, 2026
Introduction to Artificial Intelligence (Great Learning)
May 1, 2025 - January 4, 2026
Generative AI Mastermind (Outskill)
May 1, 2025 - January 4, 2026
End-User Certificate Awareness - Healthcare Module (SCIPP International)
November 1, 2016 - November 1, 2017
End-User Certificate Awareness - SCIPP International
November 1, 2016 - November 1, 2017
Elements of AI
May 1, 2025 - January 4, 2026
Introduction to Artificial Intelligence
May 1, 2025 - January 4, 2026
Generative AI Mastermind
May 1, 2025 - January 4, 2026
End-User Certificate Awareness - Healthcare Module
November 1, 2016 - November 1, 2017

Industry Experience

Education, Healthcare, Professional Services, Media & Entertainment, Software & Internet