Tony Prestifilippo
Principal SRE
Denver,CO
Summary
Experienced and enthusiastic Software and DevOps Engineer with over 10 years of experience developing, testing, implementing and optimizing cloud services and applications. Passionate about developing automation and consumable services that scale to business needs and create value.
Overview
11
11
years of professional experience
5
5
years of post-secondary education
6
6
Certifications
Work History
Principal SRE
Palo Alto Networks
11.2022 - Current
- Developed a Backstage.io plugin in React and Go to render k8s manifest diffs and orchestrate complex deployment operations
- Developed a Go based OpenTelemetry collector processor which splits joined metrics datapoints and allows an application to join metrics points to reduce cardinality overhead on the app side
- Developed a metrics aggregation service for high cardinality opentelemetry metrics data
- Developed a Go service to automate event based processing for our DelayQueue application
- Developed and implemented a centralized logging architecture for application logs on GCP, with the ability to modify log level on the fly
- Developed and implemented SDK's for Python and Go microservices oriented around utilities like standardized logging, health checking, and telemetry
- With a small team, developed and implemented architecture for Mica API Server
- Developed and implemented a K8s operator for workload identity authentication between k8s and GCP
- Developed and implemented progressive delivery for web servers using argo rollouts and automated smoke tests
- Designed and implemented a CI/CD process that meets complex requirements around Gitlab CI, ArgoCD and Backstage.io
DevOps Architect
Maven Wave Partners
03.2021 - 11.2022
- Lead technical DevOps engagements with various clients across technology, financial services, and healthcare sectors
- Experience developing containerized applications and individual micro-services in the Go and Python tech stack
- Advise and collaborate with dev teams on workload and application architecture strategies for k8s and other micro service oriented products
- Develop CI/CD and GitOps based release workflows for application workloads across a variety of containerized tech stacks, usually destined to run in K8s
- Develop and instantiate sustainable practices for developing, testing, implementing and iterating upon IaC within the realms of K8s, AWS, and GCP
- Develop custom pipeline and automation components to enhance overarching toolchains and workflows in Go
- Continuously challenge poor cloud, devops and software solutions when they are presented by clients
Lead DevOps Engineer - Cloud Business Solutions
Progressive Insurance
04.2020 - 03.2021
- Consulted with an internal product team to establish a pattern for an AWS hosted serverless API framework. This was later a pattern implemented across multiple products.
- Developed solution using a Node.js Lambda@Edge and AWS Cloudfront to perform web based routing for public facing static sites that required them
- Developed Terraform modules that product teams of public facing applications used to leverage CloudFront, Route 53 and AWS WAF and Shield Advanced policies for protection from DDOS and web layer attacks
- Collaborated to create a CI/CD pattern to deploy AWS Lambda and IAC together, leveraging Azure DevOps pipelines
- Contributed code to our innersource Internal Deveopment Portal. This was a Flask application.
- Developed a POC for a front end of an Internal Development Portal using Bootstrap, Lambda and S3.
- Established Terraform module testing patterns, leveraging tools like Terratest
- Created Starter Kits for new application teams to get acquainted with Cloud patterns and practices
Senior DevOps Engineer - Cloud Core Services
Progressive Insurance
09.2019 - 04.2020
- Designed and implemented architecture and IAC for private connectivity between Progressive's on-prem data centers and AWS, leveraging AWS Direct Connect and Transit Gateway
- Developed a secure and automated pattern for connecting an application side VPC to the centralized transit gateway environment by developing a Terraform module consumed by application teams within their IAC
- Wrote a customer facing API for automating subnet reservations and firewall requests for privately connected VPC's
- Implemented custom AWS Config rules, by writing custom Python lambdas, to enforce security policies across Progressive's AWS environment
- Established standards for Progressive's AWS base configuration terraform - this is the configuration that is applied when each new AWS account is created
Senior Systems Engineer
Progressive Insurance
10.2017 - 09.2019
- Automated F5 deployment processes by developing a custom middleware solution that our development teams could interface with in Python
- Automated the deployment of Cisco network device configurations using Python
- Lead the engineering team out of the bad habits of manually provisioning and configuring mutable resources
- Served as a subject matter expert of the F5 platform
- Responsible for designing internal and external application delivery via F5 products
Systems Engineer
Progressive Insurance
06.2014 - 10.2017
- Automated repeatable operational tasks, such as network device upgrades
- Lead the operations team as a team lead and subject matter expert in multiple domains
- Provided operational support for Progressive's datacenter network systems
Education
Bachelor of Science - Information And Telecommunication Systems
Ohio University
Athens, OH 09.2009 - 05.2014
Skills
Go
Python
Kubernetes
Infra as Code (Terraform and GCP ConfigConnector)
CI/CD & GitOps
Git
Bash
AWS
GCP
AWS Lambda and API Gateway
Certification
AWS Certified Solutions Architect Associate
GitHub
https://github.com/apresti12
https://github.com/tony-mw
Timeline
Principal SRE
Palo Alto Networks
11.2022 - Current
AWS Certified Developer Associate
12-2021
Certified Kubernetes Application Developer
07-2021
Certified Terraform Associate
04-2021
Google Cloud ACE
03-2021
DevOps Architect
Maven Wave Partners
03.2021 - 11.2022
Lead DevOps Engineer - Cloud Business Solutions
Progressive Insurance
04.2020 - 03.2021
AWS Certified Solutions Architect Associate
11-2019
Senior DevOps Engineer - Cloud Core Services
Progressive Insurance
09.2019 - 04.2020
Senior Systems Engineer
Progressive Insurance
10.2017 - 09.2019
Systems Engineer
Progressive Insurance
06.2014 - 10.2017
Bachelor of Science - Information And Telecommunication Systems
Ohio University
09.2009 - 05.2014
Go Intermediate Developer
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