Full stack
Hi, I'm Marcelo Junior
Software Engineer. I live in São Paulo, currently work at Soulloop, and have spent five years building systems, websites and apps.
Projects
Projects I built and others I worked on, and the decisions behind them.
Formatura Medicina TXXXI - UNICID
The information hub for a medical class's graduation: four events, a searchable FAQ, documents, and a form that lands in the committee's inbox.
View project →
Wedding Invitation - Marília & Davy
A wedding invitation built as a website, with a travel theme: date and venue, RSVP, gift list, PIX and the colours guests should avoid.
View project →
VM Fight
A landing page for a martial arts gym in São Paulo, built to bring visitors to a free trial class booked over WhatsApp.
View project →
Feira de Talentos - Pontuação
A web scoring system for the Talent Fair: administrators set the criteria, teachers mark students’ points throughout the year, and everyone follows progress in charts.
View project →
Weather App
A weather forecast app for iOS and Android, with search for any city in the world, current conditions and the forecast for the coming days.
View project →
AESE Business School
The new website for AESE, a Portuguese business school, built at Buzzvel. I developed the front end of its WordPress theme, including the Gutenberg blocks.
View project →Experiences
Some of the professional experience that shaped my path.
October 2025 — Present
Software Engineer · Soulloop
- Maintain and evolve a React Native mobile application, shipping features and resolving critical bugs
- Build responsive, high-performance interfaces with a focus on user experience
- Integrate the app with APIs and external services, keeping system communication efficient
- Work with designers and backend developers to keep the product experience consistent
- Support the application in production: stability, continuous fixes and performance work
- Take part in scope definition and feature planning
March 2025 — October 2025
Tech Manager · Buzzvel
- Led the development team across several simultaneous projects, keeping delivery aligned and efficient
- Planned tasks and sprints with agile methods, making the work organised and predictable
- Handled people management: tracking individual performance and supporting the team growth
- Ran code reviews and gave technical support to keep delivery quality high
- Organised and tracked project delivery against deadlines and objectives
- Took part in strategic decisions aligned with business goals
November 2022 — February 2025
Software Engineer · Buzzvel
- Worked as a front-end developer building and maintaining web and mobile apps in React, Next.js, React Native and TypeScript
- Built responsive, accessible interfaces with a focus on performance and user experience
- Contributed to landing pages, internal systems and institutional sites, following solid development practices
- Built custom WordPress solutions, including bespoke blocks and themes for different projects
- Ran code reviews and worked with the team to keep delivery consistent
February 2022 — July 2022
IT Assistant · Grupo Produtécnica
- Provided on-site and remote technical support for head office and branches, keeping services running
- Maintained systems and handled user incidents and service requests
- Analysed failures and identified opportunities to improve internal processes
- Gathered requirements and wrote functional specifications for systems
- Ran queries and analysis on Oracle databases to support diagnostics and improvements
- Installed, configured and maintained corporate tools and systems
- Monitored and maintained security systems (antivirus and firewall)
January 2021 — January 2022
IT Assistant · Contabilize Contabilidade
- Provided technical support, resolving hardware and software incidents to keep services running
- Managed users and permissions in Active Directory, improving access control and security
- Ran PostgreSQL queries to support internal operations and validate data
- Configured and maintained corporate systems and tools for performance and reliability
- Monitored and maintained security systems (antivirus and firewall), reducing risk