Software developer, speaker, Ruby contributor.
I am passionate about building the best in class products and making real impact by solving hard problems and delivering shareholder value.
Currently I work on Datadog Test Optimization product that makes your tests go brr 🏎️
- datadog-ci-rb - Ruby library for Datadog Test Optimization
- ddtest - Datadog Test Parallelization test planner and runner
- Test Better, Build Better: The Betterment Approach - how Betterment tamed their CI using Datadog Test Optimization and the client library I built
- Adventures in garbage collection - how we chased down the issue that destroyed our p99 latency at Shopify
- 🐶 Datadog:
- Created Ruby library for Datadog Test Optimization product (datadog-ci). It helps people to take their CI time from 40 minutes to 9, lift success rates from <50% to 95.4%, reduce the number of flaky tests from 3-digits-number to almost 0, and cut compute spend in half. For this library I created extremely low overhead test impact analysis tool that enables selective test runner that deterministically skips irrelevant tests. I've also written about test impact analysis in Ruby in depth and spoke about it at RubyKaigi.
- While working with customers that adopted Test Impact Analysis I identified a gap in our product: our customers didn't get meaningful CPU and CI minutes savings when using massively parallel CI pipelines. To close this gap, I designed and developed Datadog Test Parallelization feature and ddtest test planner and runner.
- I am an early adopter of AI tooling and did a lot of work to elevate my team's capabilities using AI tooling. I created a custom agentic QA harness for my team to scale quality control, exploration testing, and spec-driven development across 7 Test Optimization SDKs.
- 🛍️ Shopify: I led a team of 3 backend developers to build order management functionality for the Shopify Bundles app. We released the app in public beta and it is expected to be used by thousands of merchants. I also performed a deep dive on performance issues and discovered a garbage collection problem in the main Ruby on Rails monolith that powers Shopify.
- 🚗 SHARE NOW: During the COVID-19 lockdown, I helped our engineering organization to mature and invest in building a competitive advantage for the future. I implemented a dynamic pricing system that increased fleet utilization by 20%, resulting in a 10% increase in profits over the holiday season. I also improved the robustness of SHARE NOW internal systems by rewriting the Vehicle Location Tracker, improving its maintainability and resilience.