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Kossi Edem DOTSEY

@kossiedemdotsey

Full-Stack Developer behind School Trans, a school transport platform with QR student identification and real-time bus tracking.

Togo

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What I'm looking for

I'm available immediately for remote work worldwide, with flexibility across time zones. I’m comfortable working with European teams.

I designed and developed School Trans end to end, delivering five interfaces for parents, drivers, administrators, schools, and partners. The platform includes real-time bus tracking with route-stage notifications and QR code identification when students board and leave.

At FCbyus, I upgraded FCaudioÉdit, redesigned its navigation, and built a purchase module with affiliate codes. I also led a team of three developers at HOTSHI Ltd., implementing Clean Architecture across the Hotshi app and supporting code reviews and architecture decisions.

Experience

Work history, roles, and key accomplishments

Freelance Full-Stack Developer

School Trans

Jun 2026 - Sep 2026 (3 months)

Designed and developed a secure school transportation platform with QR code identification, including five interfaces and real-time bus tracking. Delivered the project end-to-end from architecture to store release.

Flutter Firebase NodeJS QR Code Real Time Tracking Mobile Development Backend Development

Senior Mobile Developer

FCbyus

Feb 2026 - Jun 2026 (4 months)

Migrated Flutter and Dart versions, redesigned navigation architecture, and fixed critical bugs in the purchase module. Implemented anti-screenshot and anti-recording protections for eBooks and audiobooks.

Flutter Dart Mobile Development Navigation Architecture Bug fixing Deep Linking Purchase Module iOS Android

Flutter Developer & Tech Lead

HOTSHI Ltd.

Oct 2024 - Feb 2026 (1 year 4 months)

Led a team of 3 developers implementing Clean Architecture across the codebase. Conducted code reviews, architecture decisions, and mentored new developers.

Flutter Clean Architecture Code Review Team Leadership Mentorship Mobile Development

Founder & Lead Full-Stack Developer

TECMATRIX

Jan 2018 - Dec 2024 (6 years 11 months)

Developed mobile applications and management software with production backends. Set up CI/CD pipelines and administered Linux VPS servers with Docker and Nginx.

Mobile Development Backend Development CI CD GitHub Actions Docker Nginx Linux VPS Push Notifications Geolocation Real Time Data Streaming

Full-Stack Web Developer

e-Convivial

Jul 2019 - Nov 2020 (1 year 4 months)

Developed and deployed a WhatsApp Business marketing platform, including authentication, CSV import of 800,000+ contacts, and scheduled bulk campaigns.

NodeJS WhatsApp Business API Authentication CSV Campaign Management Real time Chat