Open to opportunities

Lehan De Silva

@lehandesilva

Message

I build voice agents, LLM pipelines, and full-stack AI products for robotics and real estate.

Sri Lanka

Message

What I'm looking for

I'm looking to build practical AI systems involving voice agents, LLMs, robotics, computer vision, and scalable full-stack products.

At Vega Innovations, I built and deployed an end-to-end voice agent pipeline for the Unitree Go2 quadruped and Vega car infotainment system, supporting local STT, TTS, and LLM inference alongside OpenAI's Realtime API.

I architected a multi-agent orchestrator, hardware voice activity detection integration, and a ROS2-based sequential task executor for cross-system robotic commands. I was promoted from intern to full-time Machine Learning Engineer after delivering this pipeline.

I've also led an AI-powered real estate SaaS pilot, building OCR, RAG, streaming chat, event-driven document processing, and Stripe billing systems. Earlier, at Nawaloka Care Labs, I developed a Java and JSP internal data retrieval system for staff.

Experience

Work history, roles, and key accomplishments

Current

Machine Learning Engineer

Current

Vega Innovations

Sep 2025 - Present (11 months)

Promoted from intern to full-time Machine Learning Engineer following the successful design and deployment of a voice agent pipeline. Designed and built an end-to-end voice agent pipeline from scratch supporting local STT/TTS/LLM inference and OpenAI's Realtime API, deployed on the Unitree Go2 quadruped and later adapted to the Vega car infotainment system.

PyAudio NumPy OpenAI API ReSpeaker Multi agent orchestration Task Delegation Linked List Based Message Tracking Sequential Task Execution Multi Waypoint Navigation Framework Agnostic Design

Software Engineer Intern

Nawaloka Care Labs

Dec 2022 - Aug 2023 (8 months)

Designed and developed an internal data retrieval system using Java and JSP to streamline data access for staff. Added persistent sorting and increased data access efficiency through optimized retrieval processes.

Java JSP Optimization

Education

Degrees, certifications, and relevant coursework

University of Central Lancashire

Bachelor of Science, Software Engineering

2020 - 2024

Pursued a Bachelor of Science with Honors in Software Engineering, gaining comprehensive knowledge in software development and engineering principles.