# Greg Dungca

> Software Engineer

Location: San Francisco, California, United States
Profile: https://flows.cv/gregdungca

## Work Experience
### Senior Software Engineer I @ Freenome
Jan 2020 – Jan 2024 | San Francisco, California, United States
• Maintained and helped scale compute and data platform used by a growing research organization of over 100 computational scientists and engineers for running ML workflows and experiments
• Led development of an artifact service that enabled researchers to register molecular artifacts with schematized custom metadata and discover and reference them for their experiments; >40k artifacts registered
• Developed pipelines for ingesting clinical and lab data into new data lakehouse
• Executed and helped strategize organization-wide migration of a lab management system, migrating tens of GBs of structured data across thousands of fields; coordinated cross-functionally with PMs, analysts, and scientists to minimize disruption

### Senior Software Engineer @ Syapse
Jan 2017 – Jan 2020 | San Francisco Bay Area
• Developed and maintained de-identification pipeline used to deliver cancer patient datasets to a large pharma company; implemented using PySpark, parquet files on S3 for persistence, and AWS EMR for deployment
• Headed >1000x scaling of CDC (change data capture) service processing 30 million records/day during data migrations for large health system customers; implemented observability via New Relic and performance tuning on RabbitMQ
• Refactored an ETL pipeline, which ingests manually abstracted data and merges from disparate data sources, in order to align with major architectural update; moved persistence from S3 to AWS Aurora, automated test runs on CircleCI
• Designed and developed services to transition Django application monolith to microservices architecture deployed on a Kubernetes cluster; implemented form app backends with Flask/DynamoDB/PostgreSQL and built an interface to Auth0

### Software Engineer @ Syapse
Jan 2016 – Jan 2017 | Palo Alto, California
• Developed the clinical analytic reports feature, which aggregated clinical and molecular data of thousands of patients into insights for clinicians; wrote complex queries leveraging PostgreSQL jsonb and built framework to maintain them
• Implemented content migration strategy for managing versioning and updating of clinical trial and RxNorm therapy content across single-tenant customer databases
• Maintained the Syapse Application, which included writing/optimizing SQL queries, implementing REST API endpoints in a Django application, writing migrations, and writing SPARQL queries against Blazegraph (AWS Neptune)

### IT Business Analyst @ Index Exchange
Jan 2014 – Jan 2015 | Toronto, Canada Area
• Elicited requirements from stakeholders, developed medium fidelity prototypes, conducted user acceptance testing and wrote software requirements specifications for web application product
• Managed team projects throughout the software development lifecycle from planning to deployment
• Spearheaded implementation of new documentation and communications platform (Confluence) to resolve team collaboration issues

### Project Manager @ Students for International Development
Jan 2013 – Jan 2013 | Western Province, Kenya
• Led needs assessments and infrastructure improvement at 4 government health facilities 
• Planned and supervised campaign to treat and prevent jiggers within 3 communities spanning 51 households in Sabatia District
• Conducted research on pharmaceutical drug stock-outs in rural Kenya identifying inefficiencies within the supply chain

### Quality Assurance Analyst - Intern @ Symantec
Jan 2011 – Jan 2012 | Toronto, Ontario
• Automated regression tests using Bash scripts; reduced test time from 2 days to less than 1 hour
• Developed and executed test cases for Symantec.cloud web security services product
• Collaborated with developers and quality assurance team to analyze system defects and troubleshoot issues with testing environment


## Education
### Bachelor of Applied Science (B.A.Sc.) in Industrial Engineering
University of Toronto

### Software Engineering
Hack Reactor


## Contact & Social
- LinkedIn: https://linkedin.com/in/gregdungca

---
Source: https://flows.cv/gregdungca
JSON Resume: https://flows.cv/gregdungca/resume.json
Last updated: 2026-03-29