Senesh Hansana

Senesh Hansana

AI Engineer
Sri Lanka
Sinhala (Sri Lankan), English

About Me

AI/ML Engineer with hands-on experience building and deploying production-grade NLP, LLM, and computer vision systems. Specialized in multi-task learning, emotion-aware AI, and Retrieval-Augmented Generation (RAG). Prove…

Experience

Software Engineer

Falconet Ltd
Oct 2024 - Dec 2025 · 1 year 2 months

Built a Hybrid RAG pipeline (LangChain/LangGraph), improving retrieval precision by 40%.
Reduced LLM hallucinations by 30% via robust document parsing and chunking.
Deployed local T5 inference for secure, API-free NLP processing.

Freelance AI Developer

E2Nextgen
Feb 2024 - Dec 2025 · 1 year 10 months

Engineered multi-agent GenAI pipelines for bulk content generation, reducing manual entry time by ~70% and processing 10,000 assets weekly.
Developed multiple ML-powered Chrome extensions to automate dynamic web scraping, improving extraction reliability by 90% over legacy scripts.
Architected a real-time multi-vendor platform with secure payments and WebSockets, supporting 1000 concurrent users with sub-second latency.

Software Engineer

Falconet Ltd · Badulla, Sri Lanka
Sep 2024 - Nov 2025 · 1 year 2 months

Engineered multi-agent GenAI pipelines for bulk content generation, reducing manual entry time by ~70% and processing 10,000 assets weekly.Developed multiple ML-powered Chrome extensions to automate dynamic web scraping, improving extraction reliability by 90% over legacy scripts.Architected a real-time multi-vendor platform with secure payments and WebSockets, supporting 1000 concurrent users with sub-second latency

Freelance AI Developer

E2Nextgen · Badulla, Sri Lanka
Jan 2024 - Nov 2025 · 1 year 9 months

Fine-tuned YOLO architectures (v5) for custom object detection, increasing Mean Average Precision (mAP) by 20-30% through rigorous hyperparameter optimization.Conducted Exploratory Data Analysis (EDA) on 1,000+ images to identify class imbalances, implementing augmentation strategies that reduced edge-case prediction failures by 30%.Collaborated on deployments, reducing inference time by 30% through optimization techniques.

Software Engineer Intern

Infact Solutions (pvt) ltd
Apr 2024 - Oct 2024 · 6 months

Developed and optimized REST APIs for a microservices e-commerce platform, reducing average endpoint response time by ~30% through efficient database query indexing.
Diagnosed and resolved critical data flow bottlenecks between services, eliminating cross-service timeouts and improving data synchronization accuracy to 99%.
Enhanced system reliability under high load (5,000+ daily requests) by implementing Redis caching, which reduced core database load by approximately 40%.

Software Engineer Intern

Infact Solutions (pvt) ltd · Badulla, Sri Lanka
Mar 2024 - Sep 2024 · 5 months

Developed and optimized REST APIs for a microservices e-commerce platform, reducing average endpoint response time by ~30% through efficient database query indexing.Diagnosed and resolved critical data flow bottlenecks between services, eliminating cross-service timeouts and improving data synchronization accuracy to 99%.Enhanced system reliability under high load (5,000+ daily requests) by implementing Redis caching, which reduced core database load by approximately 40%.

Skills

C++ Language (C++) Linux Python Agile Communication Flutter GitHub JavaScript Microservices Time Management Rust TensorFlow Transformers Amazon Web Services (AWS) CI/CD Docker Natural Language Processing React TypeScript PyTorch Scikit-learn Unsloth LoRA LangChain LangGraph ChromaDB PgVector Large Language Models prompt engineering vector databases Convolutional Neural Networks Fine-Tuning Retrieval-Augmented Generation(RAG) FastAPI Express (Node.js) NestJS REST APIs WebSockets Next.js MLflow Hugging Face Postman SQL (MySQL and PostgreSQL) NoSQL (MongoDB) Critical Thinking Prompt Engineering Vector Databases Retrieval-Augmented Generation Express MySQL PostgreSQL MongoDB
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