Matthew Olenik

[email protected] | [email protected]
https://github.com/mattolenik
https://olenik.io

B.S. Software Engineering
Rochester Institute of Technology

Summary

  • 14+ years of experience as a generalist programmer and engineer with a code-heavy focus on devops, backend services, infrastructure, build and CI/CD pipelines, and developer tools
  • Deep programming experience across many languages with expertise in Go, TypeScript, JavaScript, C#, C++, C, Python, Ruby, Groovy, Scala, bash/shell, and others
  • 8+ years building infrastructure within AWS, especially with building secure complex network and VPC topologies
  • Expertise with Docker, especially containerizing existing applications and building dev environments using Docker
  • Deep expertise with Terraform, including writing new Terraform providers and custom tooling
  • Consistently identifies engineering problems and solutions, owning projects from spec/design phase, build, test, documentation, deployment and support
  • Comfortable with high pressure on-call support e.g. live debugging, incident response, root cause analysis
  • Works well with a team or autonomously, whatever is best suitable for the organization

Okta DevOps Engineer (Contract)

July 2024 — May 2025 (Contract)

  • Building and supporting Okta’s incident management Slack bot used by all of Auth0
    • Built with Tines, a low-code tool that was chosen to allow our customers to edit business logic on their own
    • Custom feature development built on APIs of Jira, Confluence, PagerDuty, StatusPage, Slack, and incident.io
    • Most programming done with Tines’ own functional language, with complex features requiring considerable code
  • Led development of the TypeScript rewrite of Okta’s incident Slack bot, a BoltJS Node app running on Kubernetes in AWS
    • Reimplemented existing incident logic in TypeScript, integrating with Slack, Jira, DynamoDB, Statuspage, PagerDuty
    • Tutored teammates not familiar with TypeScript or JavaScript to onboard them to the project
  • Prototyped a tool in Go for exporting applications from Tines (a low-code tool) and compiling them into standalone applications (targetting Go or any other language)
    • Utilized PEG (parsing expression grammar) for parsing Tines’ functional formula language into an in-memory Go representation, generated working Go code from exported Tines stories

Harpoon Principal Software Engineer

May 2023 — November 2023

No-code Kubernetes Platform

  • Built out complete infrastructure-as-code solution for deploying the product into Amazon EKS
    • Responsible for technical direction of all staging and production infrastructure
    • Base of Terraform for all essential AWS infra, such as VPC configuration, security groups
    • Terraform for creating and managing the EKS cluster, including all the extra work for deploying EKS plugin Helm charts, integrating with ALBs, Secrets Manager integration
    • Helm chart for Harpoon itself, allowing us to deploy product infra changes in an atomic manner
    • Full CI/CD with instant deployments using GitHub Actions and Keel
    • All IaC following Terraform and HCL2 best practices, clean modularization, easy management of AWS/k8s secret sync, just add a few lines of config in TF to get secrets synced/imported
  • Product Development
    • Built autodeploy functionality allowing customers to push deployments directly to Harpoon, using a from-scratch Docker Registry proxy in Go
    • Rewrote container build service to use Buildkit with Kubernetes jobs, vastly improving scale and reliability from old method of shelling out to Docker
    • Converted JavaScript codebase to TypeScript, refactoring and repairing problematic JavaScript
    • Nodejs service modernization, rewritten to use async/await, removing promises and complex callback chains
    • Miscellaneous frontend work with AngularJS
  • Developer Productivity
    • Built new developer experience using Devbox, creating a local dev environment that is isolated and reproducible
    • Improved build workflow so that all services could be built with a single `make` instead of many by-hand individual builds in each project

Pulumi Senior Software Engineer

May 2022 — October 2022 (Contract)

Developer Tools

  • Modernized crd2pulumi, a Go CLI tool for generating Pulumi code from Kubernetes Custom Resource Definitions
  • Refactor3ng from hackathon project to a standardized CLI application with full E2E tests and code coverage

HashiCorp Senior Software Engineer

November 2021 — April 2022 (Contract)

Terraform Enterprise

  • E2E test framework development, rewriting Ruby RSpec tests into a custom Go test framework
  • Implemented code coverage for E2E tests, providing developers with coverage of their Rails app even when run from within Go tests

eSentire Inc Software Engineer

April 2018 — October 2021

DevOps/Infrastructure Team

Developer Tools

  • Designed, implemented, and tested escli, a swiss army knife for engineering tasks
  • Git repo composition that works as a replacement for submodules, simpler for devs to understand and use, with a focus on CLI usability
  • Enforces deprecation of repos to encourage keeping dependencies up to date
  • Templating system for creating new projects using Go’s text/template engine
  • Custom, simple package manager for internal tools, cross platform, powered by Artifactory
  • Used by all of engineering for composing repos of any complexity

Terraform and Automation

  • Created solution for multi-account VPC networking CIDR block management with NetBox
    • Wrote Terraform provider for NetBox, focus on e2e tests against real NetBox
    • Made upstream contributions to NetBox for race conditions
    • Automated deployment and update of NetBox into AWS with Terraform and Jenkins
  • Owned design and implementation of infrastructure for esINSIDER
  • Automation for generating Terraform code from existing prod resources then importing the state
  • Created Terraform state management CLI tool to work around state bugs in Terraform 0.11
  • Jenkins scripted pipeline work, such as refactoring old multi-stage Jenkins jobs into scripted pipelines
  • Provided support for the engineering org in their day-to-day use of our development pipeline
  • Made upstream contributions to NetBox

Curalate, Core ServicesDevOps Engineer

April 2017 — Febuary 2018

  • Overhauled ECS cluster management with blue/green cluster deployments and autoscaling
  • Automated ops tasks (e.g. backups, syncs, migrations) with Terraform and AWS Lambda
  • Internal dev tools for working with Terraform, internal CLI development

VMware, Photon Controller Software Engineer, MTS III

January 2014 — May 2016

Open source multi-tenant IaaS for on-premise management of VMs and containers

  • Wrote new CI process for building VM images using Jenkins, Packer, and Vagrant
  • Designed the API for and implemented the Photon Controller Go client SDK, used in the project’s CLI
  • Wrote the plugin for Bosh, Cloud Foundary’s platform-as-a-service

Microsoft, Xbox Live Commercial Services Software Development Engineer

June 2011 — January 2014

  • Refactored legacy Xbox 360 services to run on modern CI/CD with Autopilot (internal Microsoft IaaS)
  • Implemented, tested, and deployed features in services for: user accounts, billing and offering, in-game DLC, TV-on-demand, and others
  • Owned user email preference services, consisting of a REST API, and background jobs for exporting and migrating bulk data