Justin Kreisher

Devops Engineer | Observability Enthusiast | Reliability Obsessed | AWS, Multi-Cloud, Infrastructure Automation | B.S. in Computer Science (In Progress)

Greater Orlando

About

Observability focused Site Reliability Engineer with a proven record of driving infrastructure scalability, observability, and uptime across complex multi-cloud environments. SME and primary owner of system reliability, performance, and cost optimization across multiple SaaS platforms. Known for leading production operations, incident response, IaC automation, and performance tuning efforts. Skilled in AWS, Azure, Terraform, CI/CD, and observability platforms like New Relic. Currently pursuing a B.S. in Computer Science at Western Governors University, complemented by certifications from AWS, ITIL, Comptia, and Google. Passionate about leveraging technical expertise to improve system reliability, scalability, and cost-efficiency. Established as a leader in collaborative teamwork, dedication, and a commitment to continuous learning.

Experience

  • DevOps Engineer at Stellar Health
    Feb 2026 - Present · 5 mos

  • BOLT ON TECHNOLOGY (Automotive) (Full-time · 4 yrs 7 mos)
    • Senior Site Reliability Engineer
      Jul 2025 - Feb 2026 · 8 mos

    • Devops Engineer
      May 2022 - Jul 2025 · 3 yrs 3 mos

      Sole Devops Engineer responsible for monitoring, maintaining, designing, and scaling multi cloud infrastructure for a growing Saas company. Designed and maintained a multi-cloud infrastructure with 50+ EC2 servers and 50+ RDS databases, utilizing AWS (primary) and Azure to ensure 99.9% uptime and optimized performance. Implemented advanced monitoring tools such as New Relic, Bugsnag, CloudWatch, and Slack integrations to proactively identify and resolve system issues, ensuring high availability and minimizing downtime. Collaborated with cross-functional teams spanning IT, development, marketing, sales, HR, and support across the US and 7+ countries, driving efficient workflows and deployment strategies. Conducted technical audits and optimized infrastructure to support private equity diligence, facilitating seamless in/out equity transfers and ensuring resource scalability. Reduced cloud resource costs through proactive cost management and resource right-sizing, resulting in a 50% reduction in company wide cloud spending. Leveraged a diverse stack including EC2, Lambda, API Gateway, RDS, Snowflake, New Relic, and Workspaces to support SaaS platform growth and operations.

    • Quality Assurance Analyst
      Nov 2021 - May 2022 · 7 mos

      Customized and enhanced SaaS applications by executing QA processes and collaborating closely with development teams, improving software reliability. Developed and executed manual test method using leading to significant reduction in application bugs. Revised company-wide SOPs, enhancing operational efficiency and significantly reduced the presence of bugs at product release. Delivered desktop support for beta users in a Microsoft Windows environment, capturing and addressing feedback to refine QA processes.