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Celso M. — Mid-Level Full Stack Developer from Brazil

Celso M.

Mid-Level Full Stack Developer

Brazil 6+ years
Open to offersNew to Platform
Languages
EnglishPortuguese
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About

Celso M. is a talented Full Stack Developer based in Tatuí, SP, Brazil. With extensive experience in building scalable web and mobile applications, Celso expertly utilizes React, Angular, and Typescript for creating robust frontend solutions. His background in developing B2C products includes CRM systems, transportation management apps, and telemedicine platforms. Celso demonstrated proficiency in leading full-cycle development, from architecture design to deployment, while collaborating with cross-functional teams in remote setups. His technical acumen extends to building and integrating REST and GraphQL APIs to ensure data flow and performance optimization. In addition, as a passionate educator, he has provided technical training in Power BI, Python, and web development at the Faculty of Engineering of Sorocaba. Previously, at DJSystem, Celso contributed to the backend logic of commercial management systems and retail automation projects, highlighting his capability to handle complex software integrations and UI improvements.

Experience

  • Full Stack Developer

    Freelancer · 2019 — Present
    Created and delivered various B2C web and mobile applications, including CRM systems, transportation management applications, telemedicine platforms, mobile wallets, and commercial dashboards. Ensured reusable UI components and intuitive user experiences while focusing on responsive design across multiple devices. Constructed and integrated REST and GraphQL-style APIs alongside backend services for reliable data flow and performance. Oversaw the entire development cycle, including technical design, implementation, testing, experimentation, and deployment, while collaborating remotely with cross-functional teams. Provided technical training and mentoring in Power BI, Python, and web development for students at the Faculty of Engineering of Sorocaba (FACENS), including conducting code reviews.
  • Senior Developer

    DJSystem · 2008 — 2019
    Engaged in the analysis and development of commercial management and retail automation systems, focusing on designing robust backend logic and integrating web and mobile interfaces. Developed routines for bank split issuance and CNAB remittances, as well as handling returning files and generating Brazilian fiscal obligations such as SPED and SINTEGRA. Maintained and developed desktop applications integrated with management systems, emphasizing data consistency and usability for varying user profiles.

Skills & Expertise

Education

  • Bachelor's degree in Computer Engineering
    Facens — Faculty of Engineering os Sorocaba · 2013 — 2017
  • Undergraduate studies in Computer Engineering
    UFPEL — Federal University of Pelotas · 2010 — 2012

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