Helder Cavalcante Filho

# Fullstack Developer

Location BrazilDesired Salary UnspecifiedWork preference Remote Only / Full TimeLinks Status   Open to offers Field / Industry Programming

* SharePreferences:Job Level: SeniorRelocation: NoNotice Period: ImmediateCategory: ProgrammingSkill Assessments:This user has not passed any tests yet

Languages:  English - Upper-Intermediate   Portuguese - Native or Bilingual

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[Overview](#overview)
* [Portfolio](#portfolio)

## About Me

Full Stack Developer and Tech Lead with 4+ years of experience developing, maintaining, and improving web applications. Experienced in feature development, system integrations, bug fixing, and delivering reliable software solutions. Skilled in integrating external systems, improving platform reliability, and supporting business-critical operations. Familiar with Clean Code and SOLID principles. Currently working as Tech Lead, providing technical guidance, performing code reviews, estimating development efforts, managing deployments, and supporting the team's technical growth while maintaining hands-on development responsibilities.

## Skills

### [JavaScript](https://jobicy.com/talent/javascript.md)[SaaS](https://jobicy.com/talent/saas.md)[Docker](https://jobicy.com/talent/docker.md)[Linux](https://jobicy.com/talent/linux.md)[Git](https://jobicy.com/talent/git.md)[HTML](https://jobicy.com/talent/html.md)[CSS](https://jobicy.com/talent/css.md)[MySQL](https://jobicy.com/talent/mysql.md)[PHP](https://jobicy.com/talent/php.md)[Code Review](https://jobicy.com/talent/code-review.md)[REST APIs](https://jobicy.com/talent/rest-apis.md)[Oracle](https://jobicy.com/talent/oracle.md)[Automated Testing](https://jobicy.com/talent/automated-testing.md)[Vue.Js](https://jobicy.com/talent/vue-js.md)[Payment Processing](https://jobicy.com/talent/payment-processing.md)[jQuery](https://jobicy.com/talent/jquery.md)[Clean Code](https://jobicy.com/talent/clean-code.md)[SOLID](https://jobicy.com/talent/solid.md)[Zend Framework](https://jobicy.com/talent/zend-framework.md)

## Experience

Full Stack Developer → Tech Lead @ MAXNÍVEL | Direct Sales Platform Brazil  Jun 2023 - Present Develop and maintain a multi-tenant SaaS platform focused on e-commerce, subscriptions, direct sales, ERP integrations, and payment processing. Implemented Bling ERP v3 integration, redesigned a legacy XML-based integration into REST/JSON, built retry and reprocessing mechanisms for failed payments, redesigned subscription expiration rules, investigated ERP rate-limiting issues, and resolved a critical billing incident. Promoted to Tech Lead in 2025 with responsibility for technical guidance, code reviews, effort estimation, deployment management, and team growth support.

Full Stack Developer (Intern → Full Time) @ ONISAÚDE  Jul 2022 - Jun 2023 Contributed to development and maintenance of a healthcare management platform for online consultations, appointment scheduling, patient management, and reporting. Implemented new features, resolved bugs, performed maintenance activities, and collaborated on database operations and web application development using PHP, Zend Framework, Vue.js, and Oracle.

## Education

Universidade Estácio de Sá  Aug 2026  Bachelor's Degree, Information Systems

Portfolio not available.