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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.…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.

David Wang Krakow

Web Developer, Programmer, App Developer, +5

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at Concentrix

March 1, 2025 - Present

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.

Full Stack Developer at Andersen

December 1, 2024 - October 15, 2025

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.

Mobile & Web Developer at Diverge

March 1, 2024 - October 15, 2025

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%.

Software Engineer at Vention

December 1, 2019 - October 15, 2025

Developed Node.js and React web applications with PostgreSQL databases. Participated in full software lifecycle: requirements, architecture, implementation, and QA. Implemented CI/CD pipelines and automated testing, improving deployment reliability.

Senior Full Stack Engineer at Deloitte

September 1, 2015 - Present

Delivered end-to-end web and mobile solutions, integrating React admin portals with Node/Django backends and PostgreSQL databases. Built and launched 5+ Swift iOS apps, achieving App Store approval and 50k+ downloads with positive user feedback. Designed and implemented REST and GraphQL APIs for secure, real-time data access, and developed real-time features for scheduling, shift management, and task work. Managed milestone-driven projects for cross-functional remote teams, delivering high-quality, testable code on time. Mentored junior developers to improve code quality and deployment efficiency.

Senior Full Stack Engineer at Deloitte

September 1, 2015 - Present

Delivered end-to-end web and mobile solutions, integrating React admin portals with Node/Django backends and PostgreSQL databases. Built and launched 5+ Swift iOS apps, achieving App Store approval and 50k+ downloads with positive user feedback. Designed and implemented REST and GraphQL APIs for secure, real-time data access and push notifications. Developed real-time features for scheduling, shift management, and task workflows. Managed milestone-driven projects for cross-functional remote teams, delivering high-quality, testable code on time. Mentored junior developers to improve code quality and deployment efficiency.

Senior Full Stack Engineer at Deloitte

September 1, 2015 - Present

Delivered end-to-end web and mobile solutions, integrating React admin portals with Node/Django backends and PostgreSQL databases. Built and launched 5+ Swift iOS apps, achieving App Store approval and 50k+ downloads with positive user feedback. Designed and implemented REST and GraphQL APIs for secure, real-time data access and notification features. Developed real-time features for scheduling, shift management, and task work. Managed milestone-driven projects for cross-functional remote teams, delivering high-quality, testable code on time. Mentored junior developers to improve code quality and deployment practices.

Senior Full Stack Engineer at Delo it te

September 1, 2015 - Present

Delivered end-to-end web and mobile solutions, integrating React admin portals with Node/Django backends and PostgreSQL databases. Built and launched 5+ Swift iOS apps, achieving App Store approval and 50k+ downloads with positive user feedback. Designed and implemented REST and GraphQL APIs for secure, real-time data access and push notification support. Developed real-time features for scheduling, shift management, and task workflows. Managed milestone-driven projects for cross-functional remote teams, delivering high-quality, testable code on time. Mentored junior developers to improve code quality and deployment efficiency.

Senior Full Stack Engineer at Delo it te

September 1, 2015 - Present

Delivered end-to-end web and mobile solutions, integrating React admin portals with Node/Django backends and PostgreSQL databases. Built and launched 5+ Swift iOS apps, achieving App Store approval and 50k+ downloads with positive user feedback. Designed and implemented REST and GraphQL APIs for secure, real-time data access. Developed real-time features for scheduling, shift management, and task work. Managed milestone-driven projects for cross-functional remote teams, delivering high-quality, testable code on time. Mentored junior developers to improve code quality and deployment.