Available for new projects

I build digital products with high impact

Specialist developer in Flutter, Next.js and software architecture. I turn ideas into fast, scalable and elegant applications.

Flutter/Next.js/TypeScript/Firebase/Node.js/Laravel/React/Clean Architecture/CI/CD/Tailwind CSS/PostgreSQL/N8N/Power BI/AI Agents/Data Analysis
7+
Years of experience
30+
Projects delivered
10+
Apps in production
8+
Sectors covered
About

Engineering focused on results

I'm John, a Flutter and Next.js specialist with over 7 years of experience building digital products that truly work. I operate from architecture conception all the way to production deployment.

My differentiator is the combination of sharp technical skills, clear communication and product vision. I don't just deliver code — I deliver solutions.

  • 7+ years building real digital products
  • Specialist in Flutter, Next.js and Firebase
  • Focus on Clean Architecture and best practices
  • Delivery with quality, performance and scale
JD
John Dev
Senior Software Engineer
Specialty
Flutter & Next.js
Experience
7+ years
Location
Brazil
Availability
Open to projects
Services

What I can do for you

Complete software solutions, from idea to product in production.

Flutter Development

High-performance native mobile apps for iOS and Android, with elegant UI and scalable architecture.

FlutterDartFirebaseBLoCClean Architecture

Web Development

Modern web sites and applications with Next.js, optimized for SEO, performance and conversion.

Next.jsReactTypeScriptTailwindClean Architecture

Backend & Firebase

Backend integration with Firebase, Node.js and robust, secure RESTful APIs.

Node.jsFirebaseREST APIPostgreSQLClean Architecture

Software Architecture

Design of scalable systems with Clean Architecture, SOLID and modern engineering patterns.

Clean ArchSOLIDDDDTDD

Technical Consulting

Analysis, planning and technical guidance for digital products at any stage.

Code ReviewTech LeadRefactoring

Performance & Quality

Auditing, optimization and code refactoring to maximize performance and quality.

LighthouseProfilingTestingCI/CD
Projects

Featured work

A selection of projects I built with a focus on real impact.

MarketplaceIn progress

Amapá Points

Regional tourism platform with coupons, local experiences and service marketplace. Connects tourists and residents with local businesses.

FlutterFirebaseNode.js
HR & AIIn progress

RH Easy

HR process automation with artificial intelligence, reducing operational time and improving employee experience.

N8NGoogle Cloud PlatformGeminiEvolutionAPI
MarketplaceIn progress

Indikey

Product and service referral platform with a rewards system to drive organic customer acquisition.

Next.jsNestJSPostgreSQL
Experience

Professional journey

Years of practice building real digital products.

February 2026 — present

Technical Analyst II

SENAI Amapá

May 2025 — December 2025

Sr. Flutter Developer

GFT Technologies

August 2024 — April 2025

Senior Mobile Flutter Dev

Premiersoft

October 2023 — August 2024

Mid-level Mobile Flutter Dev

Premiersoft

October 2023 — September 2024

Flutter Developer

Stift

March 2023 — August 2024

Volunteer

Flutter Floripa

May 2023 — October 2023

Mid-level Mobile Flutter Developer

TRACTIAN

November 2021 — March 2023

Jr. Flutter Developer

Anthor

August 2021 — November 2021

Client Support Analyst L2

Smarket Solutions

January 2021 — May 2021

Requirements Analyst

MSB Tecnologia

September 2020 — December 2020

Digitalization Supervisor

SOS Docs

January 2016 — September 2020

Systems Support Analyst

Você Telecomunicações

Have a project in mind?

Let's talk. Tell me what you need to build and I'll tell you how we can make it happen.