zJairO

I am Jairo, a software developer who enjoys the focus and logic behind every line of code I write.

I code in C, JavaScript, Python and just about any language I find right for the project. At some point in the past, I was a happy systems engineer also accepting managerial roles, but things change as time goes on, just like our taste.

Today I prefer to focus on my main fields of interest: Web Applications, Internet of Things and DevOps.

If you've got an idea or want to collaborate on an exciting project, feel free to drop me a DM.

Team Lead – Full Stack Developer

(August 2024 – Present)

• Led development of a real estate platform using Django, Next.js, and Web3, integrating Ethereum for decentralized frontend functionality.
• Designed REST APIs for seamless data exchange, enhancing scalability and user experience.
• Automated workflows with Python and Docker, reducing deployment time by 30% and improving reliability.
• Mentored junior developers and enforced coding standards, ensuring high-quality deliverables under tight timelines.
• Optimized Nginx and PostgreSQL configurations for high-traffic environments, boosting performance by 20%.

Full Stack Developer

(June 2023 – July 2024)

• Built an e-commerce analytics platform with Django, Next.js, and PostgreSQL, leveraging web scraping for real-time market insights.
• Developed REST APIs to support dynamic frontends, improving data retrieval speed by 25%.
• Deployed Dockerized applications on Linux servers with Nginx, ensuring consistent environments and streamlined scaling.
• Automated data workflows with Python, reducing manual tasks and accelerating client decision-making.
• Enhanced platform usability based on user feedback, increasing user engagement by 15%.

Full Stack Developer

(October 2022 – May 2023)

• Developed an offline-first mobile app using React Native and Expo for municipal task tracking, including location capture and form submission.
• Created a PHP-based dashboard with PostgreSQL for data visualization and reporting, streamlining operations.
• Optimized REST APIs and database queries, ensuring reliable data syncing and reducing reporting time by 25%.
• Utilized Docker and Linux for consistent development and deployment, minimizing environment issues.

Full Stack Developer

(September 2020 – September 2022)

• Engineered collection systems using PHP, React.js, and MySQL, enhancing data processing and user experience for high-volume workflows.
• Implemented microservices architecture to improve scalability and reduce maintenance overhead by 20%.
• Automated tasks with Bash scripts and set up backups, minimizing data loss risks and boosting efficiency.
• Optimized JSON data handling and database queries, achieving a 20% performance improvement.
• Managed version control with Git and containerized apps with Docker, ensuring collaborative development and consistent Linux deployments.

Junior Developer

(January 2019 – August 2020)

• Conducted code evaluations to ensure software quality, identifying and fixing bugs to maintain system stability.
• Provided helpdesk support for software and network issues, resolving problems efficiently to ensure uptime.
• Optimized MySQL queries, reducing execution time by 15% and improving application responsiveness.
• Diagnosed and resolved network connectivity issues, maintaining system reliability and performance.
• Collaborated with developers to deliver user-focused features, contributing to a 10% increase in user satisfaction.