Open to opportunities

Bimsara Gunarathna

@bimsaragunarathna

I build self-service developer platforms to deploy production grade products to the cloud with Kubernetes, Terraform, Python and Java

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 11 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.

Java Spring Boot Kubernetes Helm Jenkins Proxmox VE Docker Swarm Prometheus Grafana ELK Stack Claude Code Kestra MCP

Software Engineer

Enactor Ltd

Feb 2022 - Nov 2023 (1 year 9 months)

Reduced pipeline build times from 3 hours to 1 hour by optimizing Jenkins agents, reworking a Maven plugin, and parallelizing stages. Developed backend features in Java and Spring Boot with TDD, including migrating file storage and message queues to S3.

Spring Boot Java Terraform Docker Docker Swarm Kubernetes Python

Trainee Software Engineer

Compello

Jul 2021 - Jan 2022 (6 months)

Delivered 2 microservices for Compello, a cloud invoicing platform, in ASP.NET Core (C#) with EF Core and Spring Boot, using TDD. Built YAML CI/CD pipelines on Azure DevOps with Terraform on Microsoft Azure.