David Bai Email & Phone Number

● Implemented major overhaul of proprietary configuration system based on evolving business needs, resulting in >60x speedup for slowest cases.● Liaised with implementation team for pilot of large prospective client to tune workflow stability and diagnose performance bottlenecks, helping secure contract with $10B+ revenue client.● Automated mock client set up for the training team, saving them multiple hours’ worth of manual, error-prone process per trainee (dozens per month).● Worked on productionizing and extending data lineage views to give users more visibility into how data goes through the system and outputs are computed.● Created new product feature empowering technical users to fine tune workflow performance via parallelization, reducing compute cost spent on automatic retries.● Opened access to "sandbox" feature for customers, transforming tedious, support-required process to instant, self-serve process which helped company scale away from bespoke interventions.● Helped author internal library for representing table dependencies, standardizing disparate implementations to streamline future development and reduce technical debt.● Became subject matter expert in internal authorization framework, advising senior engineers across teams to knowledge-share best practices and working with security team to patch gaps in security model I identified.● Delivered critical shift in authorization framework, improving security posture for compliance & auditability while also streamlining access/approval workflows.● Migrated identity provider from Google to Okta for 300+ users with no customer impact/downtime.

● Rewired table discovery logic to remove a complex legacy workaround both transparently and with zero downtime● Improved workbench-style SparkSQL editor that enabled users to easily query tables in-product, driving platform adoption● Created SQL linter to check for known antipatterns and implemented UX improvements to query editor, proactively guiding end users towards success● Managed and optimized enterprise datasets exceeding 200+ PB in total● Performed major version upgrade for spark, a key service that was approaching end of life, which included extensive validation of production workflows powering 1M+ impressions● Led numerous operational improvements to reduce pain points and lower friction for engineers on-call, including collating documentation, synthesizing best-practices, and creating processes for better hand-off and visibility

Brooklyn, New York, United States

● Piloted significant refactor of PostgreSQL database schema and codebase, reflecting API changes that led to definitive metrics that directed improvements.● Improved system accuracy and automation rate of calls, resulting in increased revenues and client satisfaction.● Partnered across teams to analyze and resolve issues and fix complicated bugs, as well as employed AWS CloudWatch metrics and alerts to track updates and overall microservice health.● Examined user interactions and use of product, creating distinct metrics and corresponding visualizations with Looker to analyze pain points and drive measurable system improvements.

• Worked full-time after graduating with professors to create and update course assignments for five classes designed to improve CS fundamentals and critical thinking around: Computational Thinking, Theory of Computation, CS 1&2 (Algorithms and Data Structures), Computer Organization/Architecture • Guided 50+ students through six introductory and intermediate computer science classes with a focus on critical thinking so they were empowered to make design choices and consider trade-offs between those options• Hired ten student graders and oversaw their work to act on feedback from professors with individual expectations• Liaised between faculty and the student body to raise key issues such as fairness, accessibility and imposter syndrome• Promoted department events by leveraging social media and designing posters, attracting both majors and non-majors as well as raising department awareness on campus

• Conducted both casual and more structured tutorials• Utilized a non-directive approach to support the tutee’s own authorship and voice• Guided peers through all stages of the writing process• Challenged fellow students to further develop their arguments and refine their prose

Colorado Springs, Colorado Area

• Tutored 100+ beginning computer science students one-on-one, fostering their talent and enthusiasm for the discipline• Facilitated 10+ group study sessions and encouraged collaborative learning and reinforcement of material with peers• Emphasized understanding of fundamentals and experimenting off of that understanding as many tutees were caught in a rigid, dogmatic mindset of how to approach a single problem so were unable to abstract to more• Held open drop-by hours for quick tutorials, averaging five plus hours a week, increasing attendance

Pullman, Wa

Evanston, Il

• Coded scripts to automate generating molecular systems, running simulations, and analyzing output• Maintained and updated legacy code by eliminating redundancies and increasing readability• Documented both pre-existing code and newly-created code• Penned an academic research paper and presented findings to a student-faculty symposium

Bachelor Of Arts (B.A.), Computer Science, 3.9

Activities and Societies: Coding Club, Questbridge, Asian Student Union, Phi Beta Kappa

Education record

Study abroad program through CIEE