Steven Hazel, Developer in San Francisco, CA, United States
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Steven Hazel

Verified Expert  in Engineering

Software Developer

Location
San Francisco, CA, United States
Toptal Member Since
September 27, 2019

Steven began his career as a software developer with a keen interest in startups and new technologies, and a focus on shipping products. After many startup experiences, he decided to co-found his own company and has spent the past decade building Sauce Labs into a successful enterprise software company.

PythonCSeleniumJSONContinuous Delivery (CD)AsyncioMySQLUnit TestingNoSQLDockerCouchDBKubernetesRubyCSSRedis

Availability

Part-time

Preferred Environment

Emacs, Kubernetes

The most amazing...

...project I've built was Sauce Labs, a Saas product for automated software testing used by many tech companies and large enterprises.

Work Experience

Co-founder, CTO

2008 - 2019
Sauce Labs
  • Co-founded the company and was the primary engineer building the initial product.
  • Guided architecture throughout.
  • Led the transition to deploy our service with Kubernetes.
  • Hired and ran the engineering and product teams. Scaled the development team.
  • Architected, coded, maintained, and handed off a complex collection of about a dozen back-end microservices in Python.
  • Built a web app in JavaScript and Python.
  • Authored components in a variety of languages, including Go, Scala, Ruby, and JavaScript.
  • Worked with sophisticated tests and tests infrastructure for a large number of significant companies, including Selenium and Appium tests and most unit testing frameworks and CI systems.
Technologies: Selenium, Kubernetes, Python

Director, Engineer

2006 - 2007
BitTorrent
  • Managed the development team through the release of an online movie store.
  • Assisted in the development and product management of several versions of the BitTorrent client.
  • Planned and guided the release of the product.
  • Worked with key stakeholders to secure buy-in for the acquisition of µTorrent.
  • Designed and helped to code a complex web app in Python and Javascript, featuring streaming video and credit card transactions.
Technologies: Twisted, Python

Senior Software Developer

2005 - 2006
Grouper (now Sony Crackle)
  • Designed and built a file-sharing system in C# similar in idea to BitTorrent.
Technologies: C#

Software Developer

2002 - 2003
FolderShare
  • Built a file sharing system in C and PHP.
Technologies: PHP, C

Monocle

https://github.com/saucelabs/monocle
An Async/Await system for Python 2 which inspired the version of this feature included in Python 3.

iSign

https://github.com/isignpy/isign
Apple iOS code-signing implementation in cross-platform Python.

Codepad

An early supervised compiler/interpreter, allowing online compilation and execution of code in a variety of languages, with a secure container-like back end written in Haskell.

Sauce Labs

https://saucelabs.com/
A popular Cloud service for web and mobile testing. This involves a Cloud of VMs and mobile devices, and a microservice-based architecture for coordinating the Cloud, executing tests, collecting assets, and serving up an API and UI. I was the primary architect and wrote and maintained much of the code over many years.

Languages

Python, C, PHP, Ruby, Scala, Go, Reason ML, Rust, JavaScript, Haskell, C#, CSS, HTML

Frameworks

Selenium, Twisted, Django, Ruby on Rails (RoR), Ant Design

Libraries/APIs

Selenium WebDriver, Asyncio, React, FFTW

Paradigms

Functional Testing, Continuous Delivery (CD), Continuous Integration (CI), Unit Testing, Functional Programming

Storage

JSON, MySQL, NoSQL, CouchDB, Redis, MongoDB

Other

Async/Await, Scalability, VST, Audio, DSP, Digital Audio Workstations (DAW)

Platforms

Kubernetes, Docker

Tools

Emacs