Hi, I'm Randil Tharusha

Software Engineer, WSO2 · Colombo, Sri Lanka

I build production backend systems and cloud-native infrastructure in Go, with a security-conscious focus on platform engineering (Keycloak/OIDC, RBAC, encryption) and applied cryptography. Also into AI/LLM tooling built with MCP and agent orchestration.

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Currently

Software Engineer at WSO2, working on the Agentic Engineer platform. Contributor to the Ballerina standard library.

A few things I've built

• Hyena-K8s – decentralised secret management for Kubernetes using threshold cryptography (Shamir's Secret Sharing + gRPC)
• E2E Encrypted Backup Agent – zero-trust backup tool in Go, 170+ MB/s restore throughput, hierarchical key management
• ZynFlow – multi-tenant POS/inventory platform, live in production with paying clients
• Analytics API – Go + DuckDB, processes 5M+ CSV rows in under 3 seconds

Open Source

Contributor to the Ballerina (WSO2) standard library, most notably the password hashing/verification API for ballerina/crypto (PBKDF2, Argon2id, BCrypt) plus RSASSA-PSS signature support.

Tech Stack

Languages

Backend / Frontend

Databases

Infra / Cloud

AI / LLM MCP tool integration · agent orchestration · LangGraph

Writing

medium.com/@randiltharusha

Find Me