Hello, I'm
Douglas Brum
Backend & Cybersecurity-Oriented Developer
I'm a backend developer who focuses on building robust APIs and web systems using Java with Spring Boot and Python with Django. Comfortable working with Linux environments, Docker containers, and AWS fundamentals. What sets me apart is my strong interest in cybersecurity and secure application design I bring that mindset to every project I touch.
const developerProfile = {
name: "Douglas Brum",
role: "Backend Developer",
location: "Rio de Janeiro, Brazil",
favoriteStack: [
"Java + Spring Boot",
"Python + Django",
"MySQL",
"Docker"
],
currentlyLearning: "AWS & Cybersecurity",
openTo: [
"Backend Roles",
"Remote Work",
"Freelance Projects"
],
};About
I'm a backend developer and increasingly fullstack who enjoys building web applications from the ground up. My go to tools are Java with Spring Boot and Python with Django, and I'm comfortable handling everything from database design to API endpoints. I work with Docker for containerization and have hands on experience deploying applications to AWS like environments.
Recently, I've been focused on systems for social projects and NGOs platforms that track assisted individuals, automate communication flows (like WhatsApp birthday messages), and generate meaningful CSV and PDF reports. These aren't just CRUD apps; they solve real problems for organizations that need reliable, scalable solutions on tight budgets.
Beyond development, I also work as an IT instructor. Teaching Linux, MySQL, and general computing to students of all ages has sharpened my ability to break down complex topics and communicate clearly. It's taught me patience, adaptability, and how to work with people from different backgrounds skills that translate directly to collaborating with teams and stakeholders.
What drives me is writing clean, maintainable code that doesn't just work today but holds up tomorrow. I care deeply about security, scalability, and making sure what I build actually delivers business value. If you're looking for someone who brings both technical depth and a practical, security conscious mindset to backend development, let's talk.
Skills
A comprehensive toolkit for building secure, scalable backend systems
Backend & Languages
Core programming languages for building robust server-side applications.
Frameworks & Ecosystem
Modern frameworks and tools for efficient backend development.
Databases
SQL and NoSQL databases for data persistence and management.
Infrastructure & DevOps
Containerization, cloud services, and API development.
Certifications & Badges
Continuous learning and professional development in cybersecurity and software engineering
Google Cybersecurity Professional Certificate V2
Coursera / Google
Comprehensive cybersecurity training covering threat detection, security frameworks, and incident response strategies.
Introduction to Cybersecurity
Cisco
Foundational cybersecurity concepts including CIA triad, threat landscapes, and basic security principles.
Introduction to IoT
Cisco
Internet of Things fundamentals, covering connected devices, security challenges, and IoT architectures.
Python Programming
USP
Comprehensive Python training for software development, data structures, and practical application building.
Java Complete Course
Udemy
In-depth Java programming covering OOP principles, Spring Framework, and enterprise application development.
Automate Cybersecurity Tasks with Python
Coursera / Google
Hands-on training in using Python for security automation, log analysis, and threat detection scripting.
Computer Technician
SENAC
Hardware and software maintenance, networking fundamentals, and technical support best practices.
Algorithms and Programming
FUNDEC
Core programming concepts, algorithm design, data structures, and computational thinking.
Highlighted Projects
Real-world applications solving practical problems with clean, maintainable code
Culture House
Social Project Management System
Web platform designed to help NGOs manage social assistance records efficiently. It tracks individuals and their interactions, automates WhatsApp messages for birthdays and special dates, and generates comprehensive CSV and PDF statistical reports. This project showcases full-stack development, database modeling, role-based access control, and containerization.
Product Management CRUD
Java & Spring Boot Application
Robust CRUD application for managing products with a clean, intuitive web interface. Demonstrates backend architecture with Spring Boot, persistence with relational databases, and server-side rendering with Thymeleaf. Built with enterprise-grade patterns and best practices for maintainability.
User Registration Platform
Full-Stack Node, React & MySQL
Complete web application for user registration with full CRUD operations. Uses a modern three-tier architecture with a Node.js backend API, React frontend for dynamic UI, and MySQL database for data persistence. Highlights ability to integrate multiple technologies into a cohesive, working system.
Experience
Professional journey combining technical support, education, and software development
Software Support Analyst
A4PM
2025 – Present
- • Support end users in configuring and effectively using business software across multiple departments.
- • Investigate and troubleshoot technical issues, documenting incidents and collaborating with development teams to resolve bugs.
- • Ensure system availability and smooth user experience, bridging the gap between technical and non-technical stakeholders.
IT Instructor
FUNDEC
2022 – Present
- • Teach practical classes in Linux, MySQL, and general computing to students of varying ages and skill levels.
- • Develop engaging didactic materials and hands-on exercises that translate complex concepts into accessible learning experiences.
- • Evaluate student progress and provide guidance for entry-level opportunities in the IT market.
Technical Support & Freelance Developer
Olyntech
2020 – 2025
- • Perform hardware and software maintenance, diagnostics, and repairs for diverse client environments.
- • Develop custom software solutions and small-scale systems tailored to specific client requirements.
- • Work through the full development lifecycle from requirements analysis to delivery, focusing on scalable and maintainable solutions.
Education
Academic foundation in software development and emerging technologies
Associate Degree in Systems Analysis and Development
UNIASSELVI
Aug 2022 – Jul 2025
Focused on software development, algorithms, database systems, and web technologies. Covers full-stack development, software engineering principles, and practical application building.
Technology Degree in Artificial Intelligence and Machine Learning
UniCesumar
Sep 2024 – Jul 2026 (In Progress)
Fundamentals of artificial intelligence, machine learning models, data-driven systems, and neural networks. Covers both theoretical foundations and practical implementation.
Languages
Contact
Let's build something great together
Let's Work Together
I'm actively seeking backend developer roles at junior to mid level, freelance projects, and remote opportunities. If you're building secure, scalable systems and need someone who brings both technical depth and a security conscious mindset, I'd love to hear from you.
Whether it's a full time position, contract work, or collaboration on an exciting project, I'm open to discussing how I can contribute to your team.