About me

Douglas Ennes

Senior Flutter Developer · Mobile Software Engineer · Florianópolis, SC, Brazil

"A product-minded Mobile Software Engineer — the kind of developer who understands the business impact of a feature, translates customer pain points into technical tasks, and executes end-to-end, from architecture to deployment."

Senior Flutter developer with a strong product bias — postgraduate in Product Management. I build robust, scalable, cross-platform applications (Android, iOS, Windows) with a focus on user experience, involved from conception through continuous delivery in production. I've led the development of solutions from scratch, integrated complex applications with C#/.NET and PHP ecosystems, and maintained professional apps in production that reach more than 200,000 users.

Strengths

What sets me apart

Product mindset — worked as a Product Owner: requirements mapping, technical refinement, and user story writing, connecting engineering and product.
End-to-end app lifecycle — led App Trust from scratch: architecture, standards, integrations, and Android/iOS publication with deploy automation via Codemagic.
True cross-platform — Flutter in production for Android, iOS, and Windows desktop, not just mobile.
Native interoperability — Flutter ↔ Kotlin/Swift/Windows integration via MethodChannel, as each app's native feature requires.
Store management at scale — 70+ apps live across different stores (white-label), with recurring maintenance of rejections and new app store setup.
Complex integrations — C#/.NET and PHP backends, offline-first persistence, Firebase notifications.

Tech stack

Tools and technologies

Mobile

Flutter, Dart (GetX, Bloc, MobX), Android/Kotlin, iOS/Swift, MethodChannel

Backend & integrations

C#/.NET, PHP, Spring Boot, REST APIs, Firebase

Data & CI/CD

SQL, PostgreSQL, SQLite · Codemagic, Git, GitHub, GitLab

Career path

Professional experience

Aug 2025 – present

Doutor-IE — Front-End Developer · Product Owner

Cross-platform development and product mindset

Development of the Flutter platform (Android, iOS, Windows); architecture of the internal HUB; integrations with a PHP backend; requirements mapping and technical refinement as Product Owner.

Sep 2022 – Aug 2025

Grupo Voalle — Full Stack Flutter · C#

Architecture and technical leadership of a production portfolio

Architectural design and standards for App Trust from scratch; led the publication and maintenance of a portfolio with +200k users; deep integrations with C#/.NET, SQL/PostgreSQL, and Firebase.

Aug 2022 – Sep 2022

Factory Of Idea — Mobile Flutter

Analytics and native interoperability

Implemented analytics infrastructure with Firebase; two-way Flutter ↔ Kotlin integration via MethodChannel for native feature access.

Education: Postgraduate degree in Product Management (Descomplica, 2025–2026) · Associate degree in Systems Analysis and Development (Descomplica/Unisinos) · Technical degree in Computer Science (UFSM).

Beyond the résumé

Independent work

I also work independently with clients through Solve Better — Flutter and web development projects, and MVPs, ranging from startups to established companies, one-off or on retainer.

Restaurant app built from scratch.
Maintenance of a foreign app adapted for the delivery model (market localization).
Social network for firefighters in development — login, feed, profile, and post formats implemented from the client's Figma design.

Full résumé and code

LinkedIn for detailed experience, GitHub for personal projects.

LinkedIn GitHub