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Tharaka AriyarathnaTA
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Tharaka Ariyarathna

@tharakaariyarathna

Senior Software Engineer at Velaris building collaborative editing and AI tools on AWS.

Sri Lanka
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At Velaris, I led architecture and implementation of a Confluence-like collaborative editing platform using React, Node.js microservices, AWS, WebSockets, and Yjs. I also built LLM-powered chatbot tools that retrieve content from linked canvas documents, along with Python tools for the AI copilot and scheduled AI agents.

As a Senior Software Engineer, I mentor junior engineers, conduct code reviews, and contribute to hiring and technical evaluations. I also monitor production systems, resolve issues across distributed services, and optimize platform performance.

Earlier at Velaris, I improved system performance and availability with RDS read replicas, Redis, and graceful shutdowns, and designed PostgreSQL schemas and tuned SQL queries. I also coordinated production releases and handled incidents, while collaborating with Sales, Customer Success, and Product on features and UX improvements that reduced customer churn.

I built scalable SaaS integrations at Velaris using AWS services, and improved their resilience with rate limiting, retries, and deduplication. In my projects, I developed a Java patient-management microservice and a Python model that predicted support ticket resolution time, achieving over 90% accuracy.

Experience

Work history, roles, and key accomplishments

Education

Degrees, certifications, and relevant coursework

UM

University of Moratuwa

Master of Science, Artificial Intelligence

2026 -

Pursuing a Master of Science in Artificial Intelligence, expected to complete in 2028.

UK

University of Kelaniya

Bachelor of Science (Hons), Software Engineering

2020 - 2024

Grade: First Class (GPA 3.77)

Earned a Bachelor of Science (Hons) in Software Engineering with First Class honours and a GPA of 3.77.

RC

Royal College Colombo

G.C.E. Advanced Level, Physical Science

2015 - 2018

Grade: 1A2B, Z-Score 1.63

Completed G.C.E. Advanced Level in Physical Science with results of 1A2B and a Z-Score of 1.63.

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