William Zelesny

Experience

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  Stevens Institute of Technology

  Jan 2004 - Jun 2007

  - Installed and resolved issues with networking equipment.- Diagnosed and solved end user problems with intranet and connections.- Configured and tested wireless networking access points.- Created network cable runs. - Tested wireless networking accessibility ensuring its reliability across campus. - Provided users with software support for a variety of platforms. - Maintained user accounts through the Pipeline System.- Maintained user tickets created under the Remedy Ticket System.- Provided onsite hardware and software support.

  • Networking Technician

    May 2006 - Jun 2007

  • Information Technology Consultant

    Jan 2004 - May 2006
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  Schering-Plough Research Institute

  Jun 2007 - Aug 2007

  IT Intern

  - Work towards combining and refining multiple SQL databases. - Establish target lists of hardware and software in need of updating.- Provide metrics data on upgrade targets.- Contribute towards the development of asset management techniques.

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  Schering-Plough Research Institute

  Jan 2008 - Apr 2010

  - Zoning using Cisco Fabric Manager and Provisioning storage on Clariion.- Performing data migrations using TSM to simplify the data backup and archive process and refresh the backup infrastructure.- Cleaning and Maintaining the EMC Control Center environment.- Developing a support matrix based on several factors to determine the proper version of Powerpath to be installed on specific servers.- Creating a standard for which hardware and software is used for the storage infrastructure and also developing an upgrade/refresh plan for outdated hardware/software. Show less

  • IT Associate Analyst - Data Storage and Backup

    Jan 2009 - Apr 2010

  • IT Associate Analyst - Client Computing Services

    Jun 2008 - Dec 2008

  • IT Associate Analyst - Messaging, Collaboration and Workstation Engineering

    Jan 2008 - Jun 2008
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  Merck

  Mar 2010 - Jul 2011

  IT Associate Analyst - Enterprise Monitoring Services

  -Designed and implemented architectural changes to the Gomez Data Center Monitoring (formerly Vantage Agentless) solution allowing for increased monitoring capabilities. -Designed and implemented Top Application dashboards utilizing Novell Operations Center and Gomez Real User Monitoring (formerly Vantage Agentless).-Provide application teams with fault domain analyses during times of impacted availability and performance.-Modernization of enterprise monitoring tool-sets

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  Verizon Wireless

  Jul 2011 - Feb 2014

  Senior Information Analyst

  -SME for the Real User Monitoring (Compuware Gomez Data Center Monitoring / Agentless and CA CEM) and dashboarding toolsets providing insight into approx. 20 business critical applications.-Technical Lead implementing CA CEM (combined with Introscope/NetQOS integration) across 20+ business critical applications.-Works alongside application teams and the business to develop business transactions and dashboards/reports that provide on focus on improving performance-Provide analysis of data utilizing multiple tool-sets during high severity events.-Led information/training sessions to further tool-set adoption across the enterprise to increase realized return on investment.-Works alongside application teams in analyzing long term performance trends and before/after release metrics Show less

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  PNC

  Feb 2014 - Apr 2022

  - Developed vm based monitoring stack using ansible allowing other teams within the bank to deploy their own monitoring infrastructure - Providing SRE functions around drift management as well as monitoring solutions using prometheus (with Thanos for scalability and resiliency) on Kubernetes- Developed two exporters in Go to extract data from a business critical application and provide visibility in Dynatrace as well as Prometheus/Grafana- Wrote api to allow for transformation of messages from Prometheus Alertmanager to BMC Truesight BPPM for proper alert/ticket creation in Service Now Show less -Architect leading design/implementation of Compuware DCRUM (Data Center Real User Monitoring) with plans to integrate performance data with Dynatrace for a more holistic view into user experience.-Configured, deployed and maintained Endace Netpod probes for use as Dynatrace DCRUM AMD appliances.-Managing ITCAM infrastructure running internal synthetic health checks against application and Gomez for the external real user experience.-Event and alert integrations for various APM toolsets to BMC BPPM / Service Now using Python and Shell scripting.-Fault domain isolation, triage and root cause analysis of critical business impacting issues. Show less

  • Senior Technology Engineer

    Oct 2018 - Apr 2022

  • Lead Application Performance Engineer

    Feb 2014 - Oct 2018
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  JPMorgan Chase & Co.

  Apr 2022 - Mar 2024

  Vice President - Lead Software Engineer

  • Utilized Infrastructure as code in the form of Terraform to provide a multitude of testing environments in AWS for a cloud-native, microservice-driven application.• Drove the successful implementation of separating configurations from code in line with industry standards, resulting in astreamlined development process and enabling the application of the efficient 'build once, apply many• philosophy. This reduced buildtimes for configuration-based changes by ~20 minutes per microservice.• Created and developed a Jenkins pipeline used by about 50 Spring Boot microservices, leveraging separated CI and CD, toorchestrate, build, promote, and deploy a bundled subset of services to a target environment in 10 minutes.• Deployed, managed, demoed, and documented a proof of concept showcasing the advantages of the Loki, Grafana, Tempo, andMimir stack used along with OpenTelemetry to visualize correlated visibility into an application.• Developed and deployed a highly efficient CLI tool using Go, enabling seamless modifications across multiple projects, repositories,and files; streamlined workflow and achieved a 40% reduction in manual editing time.• Influenced the centralization of infrastructure values such as database hosts or Kafka topic names to be utilized by all services,reducing duplication and potential drift among the microservices.• Created an Init container binary written in Go which interfaces with AWS Parameter Store and initializes shared infrastructure valuesfor application use via environment variables.• Designed and developed custom Spinnaker pipeline stages to orchestrate releases of code and platform including prerequisite changes such as those with databases utilizing Liquibase. Show less

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  Volvo Cars

  Mar 2024 - now

  Senior DevOps Engineer