John Harrold

Senior Cloud Operations Engineer at MongoDB

Toronto, Ontario, Canada

About

Skilled in AWS Cloud and system automation, with a focus on Python. Expert in troubleshooting, with robust knowledge of computer systems and networking, both cloud-based and traditional.

Experience

  • MongoDB (Toronto, Ontario, Canada)
    • Senior Cloud Operations Engineer
      Feb 2024 - Present · 2 yrs 5 mos

    • Cloud Operations Engineer
      Feb 2022 - Feb 2024 · 2 yrs 1 mo

  • Informatica (3 yrs 5 mos)
    • Lead DevOps Engineer / Site Reliability
      Feb 2020 - Feb 2022 · 2 yrs 1 mo

      - Maintained production workloads on Kubernetes. - Engaged in R&D with tools like Kubernetes, Helm, Terraform, Ansible, MongoDB, Python, Bash, Jenkins. - Assisted development teams and developed disaster recovery procedures. - Enhanced deployment, monitoring, and reliability processes for customer-facing systems.

    • Senior DevOps Engineer / Site Reliability
      Oct 2018 - Feb 2020 · 1 yr 5 mos

  • DevOps Engineer at Resolver Inc.
    Aug 2017 - Oct 2018 · 1 yr 3 mos

    Maintained mission-critical systems in a high-reliability environment, overseeing cloud servers in AWS and Azure. Key highlights: - Migrated production to a containerized platform using AWS CloudFormation, ECS, Docker, Lambda, CloudFront CDN. - Enhanced Enterprise SQL Server Cluster reliability through PowerShell and SQL automation. - Created a serverless reporting system for frequently accessed data. - Migrated a large Windows environment to AWS with minimal downtime. - Built tools using PowerShell and Python. - Acted as a Subject Matter Expert (SME) for system infrastructure with development teams.

  • Klick (175 Bloor St. East, Toronto Ontario)
    • Cloud Solutions Administrator
      Aug 2016 - Aug 2017 · 1 yr 1 mo

      Managed computer systems in a high-reliability environment, overseeing both on-prem and cloud-based production servers. Key Responsibilities: - Automated processes through PowerShell, bash, Python. - Administered Windows (IIS, MS SQL Server, Active Directory, WSUS) and Linux. - Managed and expanded infrastructure on AWS & Azure. - Participated in planning and implementing new system projects. - Provided the highest tier of support, including pager response to alerts.

    • System Administrator
      Nov 2015 - Aug 2016 · 10 mos

      - Served as the lead planner and executor for a company-wide Active Directory migration on mixed OS X/Windows infrastructure environment. - Maintained infrastructure for 600+ employees in a fast-paced, high-growth setting. - Streamlined user and computer deployment using PowerShell.

  • System Administrator at St. Helen's Meat Packers LTD
    Nov 2013 - Nov 2015 · 2 yrs 1 mo

    Managed and maintained all on-premises systems, overseeing user, server, and networking environments across all facilities and branches. Ensured robust security and backup processes, including disaster recovery.