Sahan Wimalasiri

• Lower cloud spend Lasting savings from autoscaling, rightsizing, removing idle resources and cost policies teams follow.
• Multi-cloud consolidation Moving workloads between clouds to cut cost and the overhead of running several platforms.
• Platform migrations Moving source control and CI/CD to a new platform at scale without slowing delivery.
• Faster releases Deployments cut from hours to minutes with automated testing and parallel builds.
• Post-merger integration Bringing acquired teams onto shared IT, security and engineering systems while staying standards compliant.
• AI-assisted engineering Rolling out AI tooling to improve development velocity and efficiency.

1. Jul 2024 – Present Surry Hills, NSW

   DevOps Lead @ Yamaha Agriculture

   Yamaha Motor Corporation acquired The Yield Technology Solutions as part of its move into AgTech.

   • Led technical integration of IT and engineering systems after the acquisition, maintaining compliance through security and productivity platform migrations into the parent company.
   • Helped bring a further acquisition into the agriculture business, consolidating engineering tools and practices.
   • Reduced cloud spend through autoscaling, rightsizing and removing idle resources, backed by cost reporting and rightsizing policies.
   • Migrated services from GCP to Azure, lowering infrastructure costs and cutting cross-cloud management overhead through consolidated billing and monitoring.
   • Moved source control and CI/CD from Azure DevOps, GitHub Teams and Jenkins to GitHub Enterprise without slowing delivery, managing the change across teams in several timezones.
   • Lead a distributed team of engineers: regular 1:1s, performance reviews, hiring decisions, and mentoring through certifications.
   • Rolled out Claude AI across engineering and set up AI-assisted development practices, including secure, sandboxed cloud access so AI agents and engineers can work quickly and safely.
   • Implemented edge security, secure tunnelling and mesh networking on Cloudflare.
   • Built security scanning and vulnerability reporting into CI/CD to protect against supply-chain attacks, with dashboards for leadership.
   • Run the in-house cyber security function, reporting to the CTO/CDIO.
   • Lead penetration testing against the OWASP Top 10, and align security controls with NIST CSF 2.0, NIST SP 800-53 and ISO/SAE 21434.
   • Work with external auditors on assessments, and with engineering teams to prioritise and remediate findings based on business risk and risk acceptance.
2. Jul 2018 – Jun 2024 Surry Hills, NSW

   DevOps Lead @ The Yield Technology Solutions

   AgTech startup helping feed the world without wrecking the planet.

   • Introduced structured DevOps release practices that raised release speed and stability.
   • Built CI/CD on Jenkins, cutting deployment time from hours to minutes.
   • Automated infrastructure provisioning with Terraform and Bicep across dev, test and prod.
   • Designed a hub-and-spoke network in Azure, strengthening security posture and limiting lateral movement.
   • Designed and built real-time data processing microservices on AKS, deployed with Jenkins, Azure DevOps and Helm.
   • Set up platform monitoring with Grafana, InfluxDB, Fluentd, Pingdom, Prometheus and OpsGenie.
   • Provided after-hours and weekend on-call support.
3. Jul 2016 – Jul 2018 Chatswood, NSW

   Senior DevOps Engineer @ PetSure

   White-label pet insurance underwriter.

   • Substantially increased release frequency with fortnightly sprint releases and DevOps tooling.
   • Moved all infrastructure from a managed hosting provider, and all dev, SIT and UAT environments from on-premises, to Azure and AWS.
   • Deployed Office 365 and migrated off on-premises Exchange 2013.
   • Implemented PRTG, New Relic and AppDynamics for application and network monitoring.
4. Jan 2012 – Jun 2016 Pyrmont, NSW

   DevOps Engineer & Cloud Platform Manager @ ClickView

   Educational video platform, "the Netflix of education".

   • Migrated a large media library from an on-premises data centre to Amazon S3.
   • Configured CloudFront and Akamai CDNs, including picking POPs and changing code so streaming media went through the CDN.
   • Set up Route 53 DNS with health checks.
   • Ran Puppet for build deployment to staging and production, then rolled out Git and Chef when infrastructure moved to Azure.
   • Deployed serverless microservices on AWS Lambda and Azure Functions.

Freelance & consulting

1. Apr 2025 – Dec 2025 Freelance

   DevOps Consultant @ WeatherIt

   Australian platform helping outdoor experience businesses protect revenue with simple weather protection built on official weather data.

   • Built the Google Cloud infrastructure, including ETL pipelines ingesting weather data from the Bureau of Meteorology (BOM) and Open-Meteo.
   • Built GitHub Actions CI pipelines deploying services to Cloud Run.
   • Strengthened security posture with Cloudflare and Vanta.
2. Mar 2022 – Aug 2022 Surry Hills, NSW · Freelance

   Senior DevOps Engineer @ Particular Audience

   Global retail decisioning platform powering search, recommendations, merchandising, pricing and sponsored placements.

   • Established CI practices for repeatable build and release automation across the organisation.
   • Built consistent, repeatable infrastructure with AWS CloudFormation and CDK.
   • Took part in solution design sessions with the technical leads and helped build ETL pipelines.