Nipuna Karunarathna
SRE @ Mad Mobile | AWS & Azure Certified
Building solutions that just work
About Me
I'm a Site Reliability Engineer based in Toronto with hands-on experience in cloud computing and production support, particularly around incident management and software troubleshooting. I’ve worked directly with POS systems, tracking down and resolving critical bugs that impacted end users. On the infrastructure side, I’ve deployed and maintained virtualized environments using AWS as well as Proxmox and VMware, built internal tools with Docker and Python, and automated routine ops tasks to reduce manual overhead.
I'm certified in AWS (SAA and SysOps) and Azure (AZ-104), and I bring over two years of experience from my time at Mad Mobile, a leading POS provider in the U.S. There, I worked on investigating and patching software bugs, managing incidents, and optimizing performance.
Outside of work, I enjoy building personal projects like Substack Co-Pilot, and contributing to open-source products like Jellyfin, a media server where I’ve developed a containerized, torrent-based backend solution to streamline media delivery.
Professional Experience
- Provided advanced technical support for the CAKE POS ecosystem (end user applications, infrastructure, payments), resolving critical technical incidents within SLA targets.
- Engineered a Docker containerized POS demonstration service, streamlining deployment for sales teams and reducing demo setup time by 40%.
- Automated critical workflows, including failed payment capture and customer notifications using Python and Bash, improving payment recovery rates by 25% and reducing manual effort.
- Led integration testing using Postman and collaborated within Jenkins-based CI/CD workflows, contributing to design validation and issue resolution for consistent software delivery.
- Collaborated with technical teams for third-party integrations (e.g., Uber Eats, DoorDash, Paytronix), resolving technical issues and ensuring seamless service operation.
- Spearheaded disaster recovery protocol design and inventory management system implementation, aligning IT infrastructure with ISO 27001 standards.
- Deployed and maintained virtualized infrastructure using Proxmox and VMware ESXi, achieving high availability for critical systems.
- Implemented and managed Nagios Core monitoring with SMTP alerts for real-time infrastructure visibility, reducing incident response time by 25%.
- Deployed and managed Nextcloud collaboration suite and Zimbra mail server, supporting 100+ daily users and ensuring secure data governance, contributing to a 30% reduction in B2B SaaS costs.
- Repaired and maintained DELL desktops, laptops, and servers.
- Managed logistics operations at the service center, streamlining inventory and repair workflows.
Education
Loyalist College
Sri Lanka Institute of Information Technology
Projects
Built Ad Skipper, a Chrome extension that uses LLMs to automatically detect and skip in-video sponsored segments on YouTube eliminating reliance on crowdsourced data like SponsorBlock and addressing a gap conventional ad blockers can't cover.
Developed a multipurpose agricultural robot designed to enhance cultivation efficiency through autonomous navigation, real-time environmental and soil monitoring, intelligent crop recommendations, and advanced data visualization—enabling smarter, resource-optimized farming from initial planning to established growth.