Winfred Sunga
Sr. Lead SQL Database BI Developer
San Francisco, California, United States
Summary
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Senior🎓
Top SchoolWinfred Sunga is a seasoned Sr. Lead SQL Database and BI Developer with over a decade of professional experience building and optimizing data platforms, ETL processes, and enterprise data warehouses for finance and insurance firms. Based in San Francisco, he combines deep SQL/SSIS/SSRS expertise with hands-on Power BI reporting and production support, routinely tuning queries and stabilizing integrations from sources like MySQL, Salesforce, and flat files. Transitioning into full‑stack work, he also codes in the MERN stack and has formal web development training from UC Berkeley, demonstrating a rare blend of backend data mastery and modern front-end/backend web skills. Known for proactively learning frameworks and cloud tools, he brings practical leadership—mentoring peers, introducing Git workflows, and improving legacy systems—while preserving a developer’s curiosity for new architectures.
9 years of coding experience
4 years of employment as a software developer
Certification, Web Development, Certification, Web Development at University of California, BerkeleyBachelor of Science (B.S.), Management Information Systems, General, Bachelor of Science (B.S.), Management Information Systems, General at San Francisco State University
Stackoverflow
1reputation
0reached
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Github Skills (7)
mongoose8
mern7
expressjs6
mongodb5
nodejs4
react4
full-stack4
Github contributions (5)
yolisabam/reminder-app
Nov 2017 - Dec 2017
Contributions:99 commits, 46 PRs, 53 pushes in 13 days
reactexpressjsfull-stack-appfull-stackexpress
yolisabam/uTender
Oct 2017 - Dec 2017
Contributions:59 commits, 33 PRs, 49 pushes in 2 months
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