David Tomczyk Email & Phone Number

Chicago, Illinois, United States

Things I've worked on:- Led implementation of LLM-powered news summary, scoring, and refinement pipeline that powers Brief.news, an AI generated newsletter. Condenses 10,000+ articles per day into the most important stories across a wide variety of topics- Managed technical design and execution of user-submitted RSS feature, simultaneously initiating data migration from Firestore and GetStream to Postgres, replacing third-party service with our own API- Created bespoke PDF viewer to display and annotate PDF documents in Upnext’s mobile and web apps, incorporating our custom highlighting solution, thereby avoiding significant engineering effort to create and support a PDF-specific format- Developed third-party integrations to sync annotations made in Upnext in real time to Readwise and Notion, in contrast to competitor's delayed, one-time syncs- Built file upload and ingestion system, integrating with existing content parsing pipeline and supporting uploads from both iOS devices and browsers- Implemented email forwarding feature that parses content from emails and newsletters sent to user’s inboxes and saves it to user’s libraries- Set up mobile push notifications via integration with OneSignal- Built the video player for Upnext’s mobile and web apps- Implemented video timestamp “highlights” to allow annotations to video content- Spearheaded creation and automation of user data export feature- Created iOS native home page widgets and “Save to Upnext” iOS shortcut- Built process to send daily “Upnext Digest” emails to highlight new content for users in their inboxes- Implemented “Continue Reading” feature to record user’s reading position when they exit an article and resume there when it is reopenedOther Roles and Responsibilities:- Customer support lead- Main on-call engineer- Onboarded new users

Greater Seattle Area

- Spearheaded and lead Infrastructure as Code migration to standardize and automate infrastructure management for 10+ customer cloud deployments- Developed custom tooling to support infrastructure management and visibility for cross-functional teams- Automated deployment pipelines for machine learning and UI teams

Greater Seattle Area

- Built search aggregation API integrating multiple search providers and formats into a single cohesive API for serving search recommendations to 200K+ requests per day- Designed and implemented event-based controller framework leveraging reactive programming model to manage asynchronous client-side workflow in a chrome extension built with React and Redux

New York City

- Improved and extended UI for user onboarding and profile management, effectively translating design specifications into functioning prototype- Expanded application features requiring changes across the full stack, including React, Express, and MongoDB

New York City

- Advised multinational pharmaceutical company’s biosimilar launch strategy by identifying and prioritizing stakeholder needs, conducting primary and secondary market research, and designing tactical roadmap- Oversaw accelerated development of Manufacturing Quality System Standards by coordinating team of subject matter experts, ensuring adherence to global regulations and consistency with internal documents and requirements- Advanced client’s evidence generation plan by analyzing and prioritizing study portfolio against key stakeholder needs- Led recruiting team for graduate alma mater and coordinated Lunch and Learn lecture series for NYC office

New York City

New York City

- Cleaned and analyzed data from 14 million hospital inpatient/outpatient administrative records using SAS and SQL in order to conduct study on recurrent falls risk among older adults in NYC- Collaborated with research scientists to perform analyses that informed other departments’ projects, such as characterizing housing type distribution of elderly New Yorkers and evaluating environmental health training efficacy

New York, Ny

- Held office hours to answer student questions on health economics, national health policy, and comparative health systems- Collaborated with other teaching assistants to grade exams and effectively communicate grading decisions to students- Led discussion group for students to synthesize national health policy material learned in lectures

Madrid, Spain

- Led English classes for corporate executives and employees in one-to-one and group settings of up to 15 students, improving their ability to participate in global business environment- Developed unique lesson plans, tailored to student needs, goals, and skill level

Ann Arbor, Michigan

- Engaged with groups considered high-risk for HIV to promote education on safe sexual practices and reduction of stigma- Encouraged individuals to seek appropriate testing and treatment by providing access to testing- Accompanied clients through process of being tested for HIV while serving as emotional support

Ann Arbor, Michigan

- Trained new volunteers, assisted patients, and interacted with visitors- Created and cultivated relationships with patients and visitors from diverse backgrounds

Buenos Aires, Argentina

- Assisted medical personnel during patient interviews improving Spanish communication skills- Expanded awareness of the health issues facing low-income populations

Full Stack Web Development

Master'S Degree, Epidemiology

Bachelor Of Science (B.S.), Spanish Language And Literature