John Shrefler
DevOps Engineer at Mellon Foundation- Claim this Profile
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Bio
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Credentials
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Triplebyte Certified
TriplebyteMar, 2023- Sep, 2024 -
Passed FE Chemical, EIT Certification
NCEESJan, 2016- Sep, 2024
Experience
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Mellon Foundation
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United States
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Philanthropic Fundraising Services
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200 - 300 Employee
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DevOps Engineer
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Apr 2023 - Present
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RIOS Intelligent Machines
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United States
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Industrial Automation
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1 - 100 Employee
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DevOps Software Engineer
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Aug 2022 - Feb 2023
- Worked as a key member of the DevOps team to provide smooth development, continuous deployment, and reliable operation of software for robotic workcells - Took on Site Reliability Engineer responsibilities maximizing uptime and availability of deployed systems by implementing and tuning open source monitoring and alerting stack - Developed and maintained scripts and tooling to automate routine tasks and improve productivity, including provisioning compute and networking equipment for production deployments - Maintained core cloud environment running in AWS, working with services including VPC, EC2 S3, IAM, CloudWatch - Collaborated with development teams to design and build software running natively in Docker and Kubernetes, resulting in highly scalable and resilient systems; Personally designed and built first high availability cluster for production deployment - Collaborated with development teams to design and build software running natively in Docker and Kubernetes, packaged as Helm charts, resulting in highly scalable and resilient systems; Personally designed and built first high availability cluster for production deployment Show less
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Giant.AI
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United States
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Software Development
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1 - 100 Employee
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DevOps Engineer / Linux Systems Engineer
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Sep 2020 - Jul 2022
Various Systems work. Getting in good and early with our upcoming robot overlords. - Developed infrastructure to capture full state of the software system and continuously re-deploy to new and existing machines to maintain a uniform runtime environment - Manage software build environments and DevOps workflows for automated regression testing - Troubleshoot IT issues pertaining to networking, OS, compute hardware, storage - Daily scripting and tools development to automate any and all systems administration tasks - Containerized multiple applications in Docker, Kubernetes for portability and availability across hosts - Deployed proof-of-concept pilot projects to AWS using EC2, Lambda, ECS, EKS for backend services - Built automated data pipeline connecting external sources to internal reporting infrastructure Show less
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Epic
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Brazil
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Graphic Design
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1 - 100 Employee
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Web Applications Support Engineer
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2018 - Jul 2020
- Integrated IIS web servers and applications into customers' existing environments, supporting large-scale system upgrades and promoting continuous optimization- Guided customers in projecting capacity and assessing hardware needs for upcoming years- Led third party web service integrations within customer environments- Developed internal tools for automating daily tasks in C#, Powershell- Advised customers on networking and server architecture, with the heaviest focus on security Show less
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Technical Support Engineer, Pharmacy Application (Willow)
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Mar 2017 - 2018
- Led 10-person workgroup owning design, documentation, and small development projects for medication ordering functionality- Analyzed large data sets from customer environments to inform operational decisions- Bridged the gap between end users and backend developers for continuous improvement
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University of Florida
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United States
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Higher Education
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700 & Above Employee
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Research Associate
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2014 - 2016
− Researched alternative methods of heat removal for high power generation electronics, applying mathematical solutions to fluid flow problems driven by large temperature differences − Implemented computational solutions using Python, Matlab, and Mathematica, writing unique code using numerical methods to solve differential equations − Utilized techniques of statistics and data science to manipulate and visualize complex data sets − Collaborated with the Japanese Aerospace Exploration Agency (JAXA) on-site in Tsukuba, Japan Show less
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Penn State University
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United States
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Higher Education
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700 & Above Employee
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Research Assistant
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2013 - 2014
− Examined shape-controlled synthesis of silver nanoparticles, surface characterizations using electron microscopy − Optimized experimental parameters based on statistical analysis of size and shape distributions of particles − Performed batch reactions and utilized various techniques of wet chemistry − Examined shape-controlled synthesis of silver nanoparticles, surface characterizations using electron microscopy − Optimized experimental parameters based on statistical analysis of size and shape distributions of particles − Performed batch reactions and utilized various techniques of wet chemistry
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Field Engineering Intern
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2011 - 2011
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Education
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Penn State University
Bachelor of Science (BS), Chemical Engineering -
University of Florida
Master of Science (MS), Chemical Engineering -
Georgia Institute of Technology
Master of Science - MS, Computer Science