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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.…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.

Kossi Edem DOTSEY

Full Stack Developer, Web Developer, App Developer, +2

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Beginner

Beginner

Beginner

Language

French

Fluent

English

Advanced

Work Experience

Senior Mobile Developer at FCbyus, Lomé, Togo

February 1, 2026 - May 1, 2026

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.

Mobile & DevOps Developer at Katimini

January 1, 2025 - January 1, 2026

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.

Flutter Senior Developer & Tech Lead at HOTSHI Ltd., Ireland

October 1, 2024 - February 1, 2026

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.

Full-Stack Mobile & DevOps Developer at Lazone

July 1, 2019 - November 1, 2020

Built live cinema and VOD mobile experiences including live streaming, ticket purchasing via 5 Mobile Money solutions, and a broadcast calendar. Delivered full-stack capabilities with Node.js/MongoDB backend, Docker/Nginx deployment, and Cloudflare usage.

Lead Full-Stack Developer & Founder at TECMATRIX, Togo

January 1, 2018 - January 1, 2024

Developed and maintained multiple production mobile applications with backend services including mobile money payments, geolocation, real-time streaming, and push notifications. Built CI/CD pipelines with GitHub Actions, reducing deployments from about 2 hours of manual work to roughly 15 minutes automated with fewer errors. Managed Linux VPS infrastructure using Docker and Nginx, maintaining ~99.5% uptime over 18 months.