Citizen advocate for safe and complete streets and to reach our city goal of VisionZero: no traffic deaths or serious injuries in Jersey City by 2026.Safe and complete streets make travel safer for all road users from pedestrians to cyclists to bus riders – and are more fun and sustainable too.I revived the SafeStreetsJC organization and served as president from October 2021 - January 2024. I continue to serve on the board today.

Assumed co-ownership of Core Fitness and ran the continued building and growth of the business as a lean operation. We worked on everything from managing contractors to maintaining servers to discovering and building new features to handling payments and customer support. While we were able to move quickly, grow even faster, and serve thousands of students and learn many product and business lessons along the way, ultimately we decided to close the business.

We built Shopify for online fitness subscriptions. Hired and built a team launching a beta in 3 months and a 1.0 in 7 months. Staying organized as a business and on technical projects in a hectic environment of recruiting and hiring up to a dozen teammates, communicating and flowing well together, adapting the team to constant new learnings about our business and changing priorities.We created a novel navigational system helping online studios stand out across native mobile and web without needing to build their own independent app and website. Our team iterated quickly on a stack built with simplicity in mind, using Elixir, Svelte, Swift, and Postgres.Served as interim-CEO.

Enabling creators to share their knowledge. I managed the teams powering Teachable Payments and what became the fastest growing segment of Teachable revenue. Worked with the team to navigate compliance, growth, and retention. I also concurrently managed the Growth and Marketing Production teams, working on both long-term and short-term marketing initiatives to grow creators on the platform.Managed a team of tech leads and engineering managers of Payouts, Checkout, Growth, and Marketing Production teams to work closely with product and work in a cycle of build-measure-learn. We brought Teachable Payments into the age of PSD2 compliance, built data-driven infrastructure for product analytics and Teachable's first A/B testing system, and built marketing campaigns with high-production value in short time frames.Coached and grew individual contributors, leaders, and managers with a servant-leader mindset. Led the effort to create and roll-out Teachable's first engineering career ladder to give clarity and certainty and calibrate titles and compensation across the org. Led engineering-wide initiatives including a fast-response engineering team to shore up and scale our systems as traffic more than doubled at the beginning of the pandemic.

I managed the Search and Personalization teams. We used data to help teachers find what they need, when they need it. Measure -> Build -> Measure -> Learn. Overall, our directly measured product improvements grew the marketplace by over 10% and reaccelerated topline growth. How? We created a data-driven wind tunnel to instrument, measure, and make improvements across TpT. Tech and process that we built:Foundation- A/B testing and accessible, easy to instrument+query analytics: democratize data- Side-by-side, replayer tools to evaluate models before productionizing- Developer-driven metrics monitoring, and continuous deployment- Strong devops <-> product team collaboration and developer on-call and resolution of infra issues- Strong team communication and collaboration- Focus on improving product development flow from the right tools to having the right team structure and goals- Diverse and accelerated hiring, helping grow overall eng team from 10 to nearly 40 engProduct- Vastly improved search relevancy- Vastly decreased gaming and spamming of search- Many conversion rate positive improvements small and large throughout the buying and discovery experience- A v1 personalized homepage with building blocks for further optimizationTech- Vastly improved sitewide scaling through removing bottlenecks from network to memcached to PHP app code- Evaluate and migrate to a new language and framework from PHP - New search powered by Elixir, GraphQL, and universal React - Elixir autosuggest with response times measured in microseconds (p99 <1ms)- Sitewide migration from collocated hardware to AWS- Ironing out all the ranking bugs, operational kinks, and performance issues all along the way

functional programming via Erlang, modern javascript, DHCP and routers that cheat, drawing with Processing, and a bug in Perlin noise

Engineering Manager of the Personalization teamLed a full-stack product team. Was lucky to work with an amazing multidisciplinary team of engineers // designers // product // data science. We worked on optimizing each users experience throughout Etsy, helping users see the relevant, interesting slices of our >30 million item marketplace. In a year's work, we grew Etsy sales by over 7%.Homepage: Our largest project was creating a new, signed-in homepage that was centered around a personalized feed that provided both recommended and social content optimized for each user. Using our new API-First platform, which we helped build, we were able to launch across all platforms: mobile iPad, mobile Android, mobile web, and desktop in a short amount of time.Global Nav: Our other major project was to completely revamp global navigation across platforms, both to synchronize a product that had diverged across multiple platforms as well as become stuffed with the needs of various often forgotten products across the team – all while provable maintaining and later improving key metrics for the large existing user base.API-First: I also helped put together a unique, year-long cross-team working group to redefine our development process at Etsy to be a mobile-friendly API-First rather than web-centric in support of fast and coordinated development across platforms in a multiplatform world.

Viral Growth TeamWorked with the team to create a data-driven product development process. Fixed several major bugs in our data collection, big data stack, and A/B testing framework. I introduced an approach of data analysis as engineering – reproducibility, reviews, fixing bugs and iterating, making it resilient, sharing and learning from best practices.Working with product, took on day-to-day project management and team planning responsibilities.

Search Ads, API Team, Buyer ExperiencePart of a team of just two engineers working on scaling out ad serving and logging to 40mm daily impressions soon after initial launch. I worked on measurement and data visualization: spent a lot of time counting things properly and then counting them again. From the insights gleaned from the data, I worked on optimizing ad matching and serving, heavily contributing to doubling ad efficiency and revenue over the course of a year, including redefining the primary algorithm by which ads were served and the biggest single improvement in ad efficiency.Cut my teeth on the API-team, learning from awesome engineers who had scaled the previous generation of web startups. Wrote Etsy's rate limiting library that was used heavily across the codebase.