Technical lead on Ringside, a demand-intensive near-live ELT system built in Python and using Kafka, dbt, Postgres, and AWS. Adopted and brought system from troublesome early-access prototype to reliable workhorse, introducing major performance and reliability gains along with automated testing. Carried out migration from Nomad to Kubernetes. Provided technical mentorship to several engineers of varying seniority. Advised management on essential staffing changes.

Member of ops-leaning Platform team responsible for development and operation of a petabyte-scale marketing data pipeline, built in Go on GCP and Kubernetes. Migrated ~250M records from Elasticsearch to Spanner, navigating several emergent scaling issues and preserving reversibility. Improved API code patterns to reduce implementation and testing effort, providing model code and coaching others. Introduced static analysis tooling (golangci-lint); retired numerous bugs and issues thus exposed. Increased automation of Google Pub/Sub topic partitioning across capacity-capped resources.

Lead back-end engineer on a SaaS web app for privacy incident management, within a small startup team. Completed migration from .NET stack to a twelve-factor Go/Postgres/Linux app on AWS, becoming resident Go expert. Exerted self-driven technical and cross-disciplinary leadership on the crucial "incident dimensions" product initiative, achieving smooth and timely rollout of a major pivot in the core domain model without disrupting important edge cases.Reduced cost of change by gradually introducing more streamlined and modular architectural patterns, also obviating two wide layers of code and allowing the removal of a network hop, cutting latency in half. Managed strategic growth and version migration of REST API product. Cultivated junior colleagues' growth with in-depth guidance, pairing, and code review. Curated team-wide technical roadmap. Provided process stewardship and peer coaching for user story planning. Improved QA automation effectiveness by maturing test design and infrastructure. Authored engineering policies and practices. Received top ratings on security and code quality from multiple independent audits. Received peer recognition award.

Led prompt implementation of an urgently desired ETL product in Perl and C++, delivering a data export system that proved robust in the face of high production loads, shifting requirements, and audit demands. Commended by peers and management for hitting the ground running, producing solid work quickly, and finding opportunities to share knowledge. Guided planning process for ad hoc team, bringing clarity to chaos and serving as a model for other teams. Optimized C++ build dependency analysis to minimize spurious rebuilds, improving productivity team-wide.

Collaborated with other volunteers and a classroom teacher to deliver an AP-level computer science course in Java to high school juniors and seniors. Planned and delivered lessons, coordinated instructional team, and worked 1:1 with students.

Major contributor and eventual leader of core data team, integrating streams of air travel data into the FlightStats product's primary storage model. Redesigned intake bottlenecks to support parallel processing, removing a major barrier to scaling. Delivered a new generation of a Java-based REST API, meeting customer needs better than the legacy product. Took initiative to fill an organizational vacuum and bring order to the team's planning, subsequently advancing into team leadership. Coordinated engineering priorities among product owners. Acted as hiring manager.

Introduced cohesive rule-based architecture for a high-volume automated repricing tool serving marketplace e-commerce sellers, which proved resilient and popular with clients. Matured development practices of small but globally-distributed team, introducing greater focus on automated testing and continuous integration. Energetic participant in refining the team's Agile process.

Designed and implemented primary systems in C++ and Python for massively multiplayer online games in a distributed architecture. Collaborated across disciplines to create a new matchmaking system for large-scale multiplayer combat in Pirates of the Burning Sea. Created an AI engine for computer opponents in a card battle game, synthesizing multiple approaches to produce efficient and near-optimal play. Consistently delivered project work well within time expectations, often by a great margin.

Contributed major design and feature work in C++ to Amazon's high-volume accounting register and primary financial integration backbone. Eliminated large amounts of duplicative code through refactoring. Modeled and advocated test-driven development, providing infrastructure and guidance for peers. Recognized as a key voice for upholding high engineering standards. Led design and implementation of DB model and Java services within pilot team for software download store.

Designed and built messaging middleware for a distributed system in C++ and Java. Used template metaprogramming to obviate 90% of the load within a slow and complex code generation system. Frequently commended for taking initiative and exceeding expectations.

Prototyped a templating feature within an XML-based document authoring tool in C++. Worked with others to unite two similar features. Recognized for excellent design artifacts.

Contributed bugfix and feature work on a knowledge-sharing web app built in Active Server Pages and VBScript, in an early-stage startup of about a dozen folks.