Kossi Edem DOTSEY
Senior Software Engineer & Tech Lead with 6+ years of expertise in the Flutter ecosystem — from writing the first line of code to leading large-scale production apps.
About
Senior Software Engineer & Tech Lead with 6+ years of expertise in the Flutter ecosystem — from writing the first line of code to leading large-scale production apps. Specialized in robust architecture (Clean Architecture, DDD) and end-to-end delivery, including Node.js/NestJS backends, cloud infrastructure, and CI/CD pipelines. Proven track record collaborating with European teams (Ireland, France). Open to remote work.
- 7 years' experience
- Joined February 2023
Industry experience
- Computers & Electronics
- Software & Internet
- Media & Entertainment
- Telecommunications
- Financial Services
Work experience· 5 roles
Led Flutter migration from 3.24 to 3.41 with Dart SDK updates while preventing regressions across existing modules. Fixed critical production bugs in the purchase module that blocked users; ticket volume dropped around 60% after patches. Implemented iOS/Android eBook screenshot protection and audiobook anti-recording requested by partner publishers. Migrated Firebase Dynamic Links to native deep linking and fully removed Firebase dependency for faster link resolution. Built the complete purchase module including affiliate codes (business logic, UI integration, and tests). Continued app maintenance with new modules, bug fixes, and updates.
Owned full backend and infrastructure for a couple app with 10,000+ users. Built interactive quizzes and personalized challenges. Covered both mobile and DevOps responsibilities including iOS and Android delivery as well as backend and deployment.
Tech lead for iOS and Android apps for an Irish product team: organized team workflow, conducted code reviews, and drove architecture decisions. Implemented Clean Architecture across the entire codebase with a team of 3 developers. Improved release stability and reduced friction to increase product-team confidence. Onboarded and mentored new developers; participated in recruitment and product decisions with Irish stakeholders.
Education
Certifications and awards
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