LOADING...
Hello, I'm Jadson 👋
🟢 Available for new projects

Backend Developer specialized in creating robust APIs and scalable solutions. Currently developing systems with Java (Spring Boot) and Node.js (NestJS) at Horizon, plus volunteer and freelance projects.

💼 What I do:
• Development of RESTful APIs with Java Spring Boot, Node.js, and Python
• Microservices architecture and system integration
• Full Stack applications with React, TypeScript, and SQL/NoSQL databases
• Automation, tests (TDD), and best practices (SOLID, Clean Code)

🚀 Main Stack: Java • Spring Boot • Node.js • NestJS • TypeScript • Python • React • PostgreSQL • MongoDB • Docker

📊 Experience: Professional Backend Developer, +16 projects on GitHub, working with agile methodologies and delivering real solutions.

💬 Chat on WhatsApp 📅 Schedule Meeting 📝 Request Quote
By the Numbers
0
Projects Completed
Full Stack applications
--
Total Commits
Across public repositories
--
Pull Requests
Opened or merged contributions
--
Contributions this year
Commits, PRs & code reviews
--
Top Languages
Based on active repositories
Updated live from GitHub · Last sync: --

Professional Experience

My career journey in software development

Dec 2024 - Present

Backend Developer

Horizon | Remoto

Developing RESTful APIs with Java Spring Boot and Node.js NestJS. Working with microservices architecture, PostgreSQL, MongoDB, and AWS cloud services.

Java Spring Boot Node.js NestJS AWS
Feb 2025 - Present

Full Stack Developer

Zarpar | Remote

Developing full-stack solutions with modern technologies. Working on scalable web applications with React, Node.js, and cloud infrastructure.

React Node.js TypeScript Cloud
2023 - 2024

Web Development Student

Trybe | Remote

Intensive full-stack development training with 1,500+ hours of hands-on practice. Built 50+ projects covering front-end, back-end, computer science, and soft skills.

JavaScript React Node.js SQL
2022

First Steps in Programming

Self-taught | Online Courses

Started learning programming with Python and JavaScript through online courses. Built personal projects and participated in coding challenges.

Python JavaScript HTML/CSS
Skills

Summary

Full Stack Developer

Java
Node.js
Python
React
Docker
SQL/NoSQL
Clean Code
TDD
SOLID
Microservices
RESTful APIs
Cloud (AWS)
Git/GitHub
Agile/Scrum

Technical

Javascript
ReactJS
GNU/Linux
CSS3
Python
Flask
React

Skill Coverage Radar

Balance between backend, frontend, DevOps and collaboration.

Time Allocation by Stack

Weekly focus dedicated to each stack.

Projects by Language

Portfolio distribution per technology.

Projects
Featured All Fundamentals Front-end Back-end Computer Science
Services & Contact

I offer professional web development for companies and personal projects

⚙️ Backend Development

Robust RESTful APIs with Java Spring Boot, Node.js, or Python

Timeline: 2-4 weeks

🎨 Frontend Development

Modern interfaces with React, TypeScript, and responsive design

Timeline: 1-3 weeks

🚀 Full Stack Projects

Complete applications from scratch to deployment

Timeline: 4-8 weeks

🔧 Integrations & APIs

System integration, microservices, and automation

Timeline: 1-2 weeks

📝 Request Detailed Quote

arrow
How I Work

Agile methodology with continuous delivery and transparent communication

1

Briefing

Free 30-minute meeting to understand your needs

2

Proposal

Detailed proposal with scope, timeline, and investment (48h)

3

Development

Agile sprints with weekly deliveries and feedback

4

Delivery

Testing, deployment, and documentation

📅 Schedule Free Meeting 💬 Chat on WhatsApp
Frequently Asked Questions

Common questions about working together

❓ How long does a typical project take?

It depends on the complexity. Small projects (landing pages, simple apps): 1-2 weeks. Medium projects (full web apps): 4-6 weeks. Large projects (complex systems): 8-12 weeks.

💰 How does payment work?

Typically 50% upfront to start the project and 50% upon final delivery. For longer projects, we can split into milestones. Payment via bank transfer or PIX.

🛠️ Do you offer post-delivery support?

Yes! All projects include 30 days of free support for bug fixes. Ongoing maintenance and new features can be arranged separately.

📞 How do we communicate during the project?

WhatsApp for quick questions, email for detailed discussions, and weekly video calls to review progress. I'm available during business hours (9am-6pm BRT) and respond within 24 hours.

🔄 Can I request changes during development?

Absolutely! I work with agile sprints and weekly demos. Feedback is encouraged and adjustments are part of the process. Major scope changes may affect timeline and budget.

📋 What do I need to provide to get started?

A clear description of what you need, any design references or mockups (if available), content (text, images), and login credentials for any existing systems. Don't worry if you don't have everything—I'll help you figure it out during the briefing!

Still have questions?

💬 Ask me directly on WhatsApp
Contact

I'd love to hear from you! I'm open to collaborations, especially on open source projects. Interesting job opportunity? Or want to chat? Contact me!

Feel free to write to me about anything: jadson.sousamattos@gmail.com . I'll respond soon.

My resume is available here: PDF, DOC

Average response time Under 24 hours
Availability Open for new freelance projects

Start a project

Fill the form and I’ll get back to you in less than 24 hours.

By submitting you agree to be contacted via email or WhatsApp for this request.