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Vidura Wijekoon

Vidura Wijekoon

Senior AI/ML Engineer/Line Manager | MSc Researcher (AI & DS) | Applied GenAI & Enterprise Architecture (AWS/GCP) | Chapter Lead - AI SGE Chapter| Certified AI Security & Governance Practitioner | Certified AI Engineer (AI Projects focused on Annotation & LLM Training)

SRI_LANKA flag
Colombo, Sri Lanka
$50.00/hrExpertOpencv AI Kit OakData Annotation TechAws Sagemaker

Key Skills

Software

OpenCV AI Kit (OAK)OpenCV AI Kit (OAK)
Data Annotation TechData Annotation Tech
AWS SageMakerAWS SageMaker
Google Cloud Vertex AIGoogle Cloud Vertex AI

Top Subject Matter

Llms Domain Expertise
Generative AI
Renewable Energy

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

Fine Tuning
Classification
Bounding Box
Entity Ner Classification
Object Detection
RLHF
Computer Programming Coding
Prompt Response Writing SFT
Red Teaming
Question Answering
Text Summarization
Text Generation

Freelancer Overview

I am a Senior AI/ML Engineer and researcher with 7+ years of industry and academic experience, currently based in Sri Lanka. I hold an MSc in AI & Data Science and a BSc (Hons) in Electrical and Software Engineering, and I work as a Senior AI/ML Engineer and Line Manager at Virtusa. My hands-on expertise spans supervised and unsupervised learning, LLM fine-tuning, RLHF, AI safety benchmarking, explainability, and model evaluation giving me a strong foundation for producing high-quality, nuanced AI training data across complex tasks. Beyond corporate delivery, I serve as Chapter Leader of AI SGE Sri Lanka, have led 61 technical workshops, and mentored 450+ professionals across the AI/ML space. I have contributed to 50+ AI projects covering NLP, computer vision, energy optimization, and agentic systems. This breadth of project exposure means I can accurately label, evaluate, and critique AI-generated outputs across diverse domains including code, technical writing, reasoning tasks, and safety-sensitive content with both speed and precision.

ExpertSinhaleseEnglish

Labeling Experience

Machine Learning Engineer/ Product Owner/Mentor/SL Chapter Co Lead (AI Projects focused on Annotation & LLM Training)

TextFine Tuning
Led teams on annotation and supervised fine-tuning of models for over 18 diverse AI projects at Omdena. Oversaw training data preparation and prompt engineering for LLM and generative AI product development projects. Directed national and core AI project workflows focused on renewable energy optimization and tea quality text analysis. • Coordinated annotation processes for ML/NLP pipelines in an international team • Established data validation and QA procedures for annotation accuracy • Integrated feedback loops for iterative model improvement • Managed prompt generation and response validation for LLM RLHF tasks

Led teams on annotation and supervised fine-tuning of models for over 18 diverse AI projects at Omdena. Oversaw training data preparation and prompt engineering for LLM and generative AI product development projects. Directed national and core AI project workflows focused on renewable energy optimization and tea quality text analysis. • Coordinated annotation processes for ML/NLP pipelines in an international team • Established data validation and QA procedures for annotation accuracy • Integrated feedback loops for iterative model improvement • Managed prompt generation and response validation for LLM RLHF tasks

2021 - 2025

Head of AI/Cofounder - Trinet Innovations Pvt Ltd

ImageSegmentation
Worked with medical domain closed project which focused on Biological DNA dataset handling which focused on disease root cause research

Worked with medical domain closed project which focused on Biological DNA dataset handling which focused on disease root cause research

2023 - 2024

Trainee Machine Learning Engineer (Sentiment Data Labeling Project)

OtherTextClassification
Labeled and classified sentiment data in a text analysis project during an internship at Forsk Coding School. Prepared and preprocessed datasets for natural language AI model training. Utilized Python for data cleaning and annotation modules in collaboration with supervisory guidance. • Designed and executed labeling guidelines for sentiment datasets • Used Python and Pandas for data annotation and manipulation • Performed supervised classification for quality assurance • Documented annotation outcomes and error rates for review

Labeled and classified sentiment data in a text analysis project during an internship at Forsk Coding School. Prepared and preprocessed datasets for natural language AI model training. Utilized Python for data cleaning and annotation modules in collaboration with supervisory guidance. • Designed and executed labeling guidelines for sentiment datasets • Used Python and Pandas for data annotation and manipulation • Performed supervised classification for quality assurance • Documented annotation outcomes and error rates for review

2020 - 2021

Education

A

Amazon Web Services

Certificate in AWS Machine Learning Speciality, Machine Learning

Certificate in AWS Machine Learning Speciality
2025 - 2028
S

Securiti

Certificate in Certified AI Security and Governance Practitioner, Artificial Intelligence Security and Governance

Certificate in Certified AI Security and Governance Practitioner
2025 - 2027

Work History

A

AI SGE

Chapter Lead / Co-founder

Colombo
2026 - Present
V

Virtusa

Senior Software Engineer / Line Manager

Colombo
2024 - Present