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.

• 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.

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.
• 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