# Mark Pan > Livingry for living free. Location: New York, New York, United States Profile: https://flows.cv/markpan I focus on creating value. My favored tools are clear thinking, effective communication, and clean code. I tinker with Ruby, Rust, and React Native in my downtime. ## Work Experience ### Senior Software Engineer @ Splitwise Inc. Jan 2022 – Present | New York, New York, United States I'm a proud member of the server team. Some highlights from my work here: • I lead the introduction and rollout of Pay By Bank in Europe. • I built the infrastructure for our revamped Receipt Scanning experience. • I was a primary technical contributor for several initiatives relating to Splitwise Pay and Splitwise Card. ### Software Engineer @ Meta Jan 2021 – Jan 2022 | Menlo Park, California, United States I created value for millions of businesses and their customers by improving the Shops experience: https://www.facebook.com/business/shops ### Software Engineer @ Doximity Jan 2019 – Jan 2021 | Austin, Texas, United States I worked remotely with the Social Updates team - mostly feature work and domain design in Ruby on Rails with Sidekiq, Redis, MySQL and Kafka, with occasional plumbing/debugging excursions into GraphQL and Vue. Some highlights from my work here: • I improved an algorithm for reaggregating notifications, which decreased that endpoint's memory allocations by over 90%. • I built a pipeline for disseminating 1K+ peer recommendations per month on top of Sidekiq, Redis, and Kafka. • I wrote a backfill task to safely and efficiently update 180M+ records in our production database. • I optimized a daily-run archive job by making use of batching, caching, and a compound index, which reduced the job's execution time by 98%. I use Docker containers for local development, GitHub for code reviews, and Pivotal Tracker for issue tracking. ### Software Engineer @ Great Lakes Bioenergy Research Center (GLBRC) Jan 2018 – Jan 2019 | Madison, WI I built tools to assist researchers and administrators with a wide variety of workflows. One large project I worked on was a Rails API/React UI microservice for visualizing respirometry data. Some highlights from my work here: • I wrote rake tasks to import mission-critical Excel data for reporting to the U.S. Department of Energy, the institute's primary funding source. • I audited our Rspec + Capybara test suite, making fixes to align it with industry best practices, which reduced its single-process runtime by over 20%. • I built dynamic nested forms and a file tree navigator using AJAX + jQuery. • I wrote shell scripts to assist with database management and config file updates, making context switches faster and less error-prone for our entire team. I developed against a Docker clone of a production Oracle database, using Gitlab for code reviews and Jira for issue tracking. ### Contractor @ PGoetsch Services, LLC Jan 2017 – Jan 2018 | Madison, WI • I worked on an import script for JPW Industries. In particular, I wrote code to alert members of the core maintenance team when parts of the import script raised errors. • I built the website for Vilas & Company (www.vilasandcompany.com) using Jekyll and Amazon S3. ### Contractor @ Optimize Your Grow Jan 2017 – Jan 2017 | Madison, WI • I got Julia to play nice with Heroku, resolving 100% of request timeout issues caused by a processor-heavy task taking too long to complete on the server. ### Biology and Maths Instructor @ Freelance Jan 2016 – Jan 2017 | Hong Kong • I taught biology and math to local and international students aged 8 to 28. • I leveraged web and mobile technologies to track progress and enhance learner outcomes. ### Education Consultant and Instructor @ Keystone Education Limited Jan 2015 – Jan 2016 | Hong Kong • I taught ACT Maths, SSAT/SAT Quantitative, SAT Maths Subjects, SAT Biology/EM Subject, AP/IB Biology, MYP Maths, and GRE Verbal Reasoning. • I wrote diagnostic exams to identify gaps in student understanding and designed a math curriculum to address these gaps, focusing in particular on translation of word problems into math symbols. ### Treasurer @ Student Organization, University of Wisconsin-Madison Jan 2014 – Jan 2015 | Madison, WI • I drafted the FY15 budget and helped secure $69,161.10 in institutional funding. • I prepared time-sensitive reports and justifications of expenditures for both our funding entity and the general public. • I increased operational efficiency by 11%, cutting costs of the organization by nearly $8,000 over the course of one fiscal year. • I approved the twice-monthly payroll activities of 15 employees. • I maintained a complete record of financial transactions for auditing purposes. • I coordinated logistics for the annual Freethought Festival - one of the largest secular student conventions in the nation. • I led weekly meetings in which I prepared and presented material from field-specific literature to audiences of 30 to 70 people. ### Undergraduate Research Assistant @ Auger Lab, Department of Psychology, University of Wisconsin-Madison Jan 2014 – Jan 2014 | Madison, WI • I assisted the principle investigator with data collection and analysis to study epigenetic mechanisms using the central nervous system of Rattus spp. as a model. • I wrote a Python script to perform calculations and expedite the process of cDNA synthesis. • I performed slice preparation, tissue homogenization, DNA, RNA and protein purification, cDNA synthesis, and immunocytochemistry, Western blot and polymerase chain reaction assays. • I kept my peers, graduate mentors, and PI up-to-date on lab activities and results as part of weekly lab meetings. ### Assistant Animal Research Technician @ Waisman Center Rodent Models Core Jan 2012 – Jan 2012 | Madison, WI - Organized and maintained laboratory facilities and experimentation equipment for principle investigators to ensure on-demand working order - Prepared and changed cages used for rodent storage while adhering strictly to biohazard safety protocols - Performed regularly schedule cage-checks, room-sanitizations and other custodial duties ## Education ### Bachelor of Science in Molecular Biology University of Wisconsin-Madison Jan 2011 – Jan 2015 ### High School Diploma Wausau West High School Jan 2007 – Jan 2011 ## Contact & Social - LinkedIn: https://linkedin.com/in/markcuipan - Website: https://markcuipan.com - Website: https://twitter.com/markcuipan - GitHub: https://github.com/factcondenser --- Source: https://flows.cv/markpan JSON Resume: https://flows.cv/markpan/resume.json Last updated: 2026-03-22