Co-Founder, DreamSpace Technologies · Batticaloa, Sri Lanka

Govarthenan
Rajadurai

I design and deliver end-to-end AI systems: from dataset construction and model training to production deployment.

Govarthenan Rajadurai
About

I'm a data scientist and co-founder of DreamSpace Technologies — a software development agency in Batticaloa, Sri Lanka building AI and data systems for organisations that need them to work, not just exist. My work spans dataset construction, NLP models for native and English languages, computer vision, analytical dashboards, and end-to-end project delivery. I work directly with clients to take a problem from idea to deployed system.

By the Numbers
4+
Years of professional experience
55k+
Rows of data collected & managed
5+
Data dashboards built & deployed
20+
People led across data collection teams
What I Do
  • NLP model development — classification, RAG pipelines, LLM fine-tuning (English, Tamil, Sinhala)
  • Computer vision model development and deployment
  • Dataset construction, annotation pipeline design, and team management
  • Dashboards and data visualisations that communicate clearly to decision-makers
  • End-to-end software project management and delivery
  • AI consulting for social impact organisations, NGOs, and research institutions
Projects
HateLens

Sri Lanka's most comprehensive digital hate speech dataset and detection system. Led the construction of a 55,000+ row multilingual corpus in Tamil, Sinhala, and Latin script across 12 fields. Fine-tuned open-weight LLMs for detection and counter-narrative generation in both languages. Managed two data collection teams of 20+ people.

NLP LLM Fine-tuning Dataset Construction Tamil & Sinhala USAID-funded UN-acknowledged
Rupeeka

An LLM-powered economic fact-checking assistant for journalists and the public. Verifies economic claims against official Sri Lankan government sources — Central Bank, Ministry of Finance — and translates complex policy into plain language across English, Sinhala, and Tamil. Built with an intelligent RAG pipeline featuring query expansion, relevance tuning, and reranking.

RAG LLM Multilingual Journalism Tools Fact-checking
LLM Bias in Socio-Historical Topics

An ongoing white paper investigation into how popular LLMs exhibit bias when confronted with Sri Lanka's socially and historically contested topics. Uses structured prompting techniques, varied user roles, and multiple conversation languages to benchmark responses across models.

Research LLM Evaluation Bias Analysis Prompting
Coffee Bean Classifier — Agrivero.ai

Developed a computer vision model to classify coffee bean sizes based on sub-centimetre differences. Also diagnosed a systemic hardware accuracy issue through diagnostic analysis — leading the company to overhaul their hardware setup and significantly improve overall system accuracy.

Computer Vision Classification Hardware Diagnostics
Experience
Co-Founder & Director / Data Scientist
Jan 2025 — Present
DreamSpace Technologies · Batticaloa, Sri Lanka
Leading AI and data projects for national and international clients. Overseeing engineering practices, intern development, and research-to-product pipelines. Partners with USAID and UN-affiliated organisations.
Data Scientist
Apr 2022 — Dec 2024
DreamSpace Academy · Batticaloa, Sri Lanka
Built NLP, computer vision, time series, and recommender models. Architected the next iteration of the hate speech detection system and secured USAID funding. Planned the software lab infrastructure and trained multiple intern cohorts.
Automation Engineer
Mar 2023 — Aug 2023
Elimo IT · Colombo, Sri Lanka
Automated Excel workflows for HSBC Bank using Python and the win32 API. Used NumPy vectorisation to handle large files efficiently and designed a two-way lookup table to simplify complex KPI calculations.
Web Scraping Engineer
Nov 2022 — Apr 2023
UCSC Sustainable Computing Research Group · Colombo, Sri Lanka
Built advanced scraping pipelines for digital forensics research, extracting and preprocessing human-readable text from structured and unstructured sources for ElasticSearch analysis.
Data Science Intern
Sep 2021 — Jan 2022
Agrivero.ai · Berlin, Germany (Remote)
Computer vision model development for agricultural quality assurance. Identified a hardware-level accuracy flaw that led to a full hardware overhaul at the company.
Freelance Data Scientist
Jun 2022 — Present
Various · Remote
Customer retention analysis for an Australian supermarket chain. Financial ticker prediction using LSTM models for a German client. NLP and web scraping pipelines for an Australian IT support agency.
Recognition
  • Stimson Center Responsible AI Fellow
  • Attendee — High-Level AI Policy Consultation, Canadian High Commission
  • HateLens acknowledged by USAID, UNDP, UN Global Communities
  • BSc in Information Systems — University of Colombo School of Computing
Contact
govarthenan@gmail.com LinkedIn ↗ GitHub ↗
Batticaloa, Sri Lanka · Open to remote engagements