Open to opportunities

Bimsara Gunarathna

@bimsaragunarathna

Message

I build self-service developer platforms, Kubernetes infrastructure, and cost-efficient cloud-to-on-prem deployments.

Sri Lanka

Message

What I'm looking for

I'm looking to build and evolve self-service platforms, Kubernetes infrastructure, and secure delivery automation while enabling developers to deploy independently.

I've built self-service Internal Developer Platforms for Enactor’s SaaS offering, supporting retail organizations including Harrods, JYSK, Frasers Group, Leroy Merlin, and Macy’s. My Deployment Portal reduced production-environment provisioning from five man-days to under two hours.

I operate Kubernetes workloads across AWS EKS, Proxmox-hosted clusters, and Docker Swarm estates, and led the migration of 50+ environments from AWS to on-premises infrastructure, delivering more than $120K in annual cloud savings. I’ve also improved CI/CD performance, strengthened ISO 27001 and PCI DSS compliance, and introduced container-native observability with Prometheus, Grafana, and the ELK stack.

I enjoy enabling engineering teams through GitOps, automation, secure platform foundations, mentoring, and practical AI-assisted development workflows.

Experience

Work history, roles, and key accomplishments

Current

Senior Platform Engineer

Current

Enactor Ltd

Nov 2023 - Present (2 years 9 months)

Built a self-service Internal Developer Platform (IDP) in Java and Spring Boot, cutting environment provisioning from 5 man-days to under 2 hours. Architected Proxmox integration and migrated 50+ environments from AWS to on-premises, saving $120K+ annually.