David Wang Krakow
Hi, I'm David Wang Krakow, a software developer with 8+ years of experience building iOS mobile apps and web admin portals.
About
Hi, I’m David Wang Krakow, a software developer with 8+ years of experience building iOS mobile apps and web admin portals. I specialize in front-end and back-end development using React, Node.js, PostgreSQL, and Django to deliver scalable, maintainable solutions.
I thrive in remote, cross-functional teams, ship milestone-driven features, and enjoy turning technology into social impact, particularly in healthcare staffing and workforce management.
- 14 years' experience
- Joined October 2025
Industry experience
- Software & Internet
- Healthcare
- Professional Services
- Education
- Media & Entertainment
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Work experience· 19 roles
Developed a React-based web admin portal and backend services using Node.js and PostgreSQL. Implemented real-time messaging, push notifications, and authentication flows; integrated REST/GraphQL APIs to connect mobile apps and dashboards. Improved workflow efficiency by 25% through optimized workflows. Led remote, cross-functional collaboration to deliver milestone-driven features and post-launch support; ensured code quality with testable, maintainable backend and frontend.
Designed and launched enterprise-grade React admin portals integrated with Django backends and PostgreSQL databases. Implemented authentication flows, check-in systems, and analytics dashboards to enable better operational oversight. Delivered code aligned with milestone-based sprints and maintained test coverage.
Launched 5+ Swift iOS apps on the App Store, achieving an average rating of 4.6+. Built React admin portals for real-time monitoring, user management, and reporting. Implemented push notifications, real-time chat, and shift-management features, enhancing user engagement. Optimized backend performance with Node.js and PostgreSQL, reducing API response times by 40%.
Education· 11
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