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Marcus Vinícius Gonçalves de Souza Couto

@marcusvinciusgonalve

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Junior Full Stack Developer focused on web technologies and data-driven solutions.

Brazil

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What I'm looking for

I seek a junior/full-stack role where I can build web applications, apply data analysis and ML skills, learn from mentors, and contribute to a collaborative, growth-oriented team.

I am a Junior Full Stack Developer with hands-on experience building web projects using HTML5, CSS3, and JavaScript, and applying data analysis and machine learning techniques in Python to real-world finance datasets.

I completed a course final project developing predictive models for B3 stocks using EDA, multiple linear regression, decision trees, and Random Forest, evaluating performance with R², MAE, and RMSE across 81 Ibovespa assets (2019–2023).

My professional experience includes engineering work testing electrical panels and IEDs, internships focused on validation and schematic reading, and roles in customer service and data collection where I improved automation with macros and scripts, strengthened communication, and cultivated attention to detail.

Experience

Work history, roles, and key accomplishments

Engineering Intern

Ingeteam

Feb 2024 - Jul 2024 (5 months)

Executed validation tests of electrical panels and IEDs, performed bench testing and quality control, and improved schematic reading and attention to detail during panel design and testing for power substations.

Electrical Testing Schematic Reading Bench Testing Quality Control Python Git Github Excel

Customer Service Representative

Webhelp

Aug 2023 - Jan 2024 (5 months)

Handled customer service and debt-collection negotiations via email, created automated macros and an Excel productivity spreadsheet to expedite responses and improve efficiency.

Customer Service Debt Collection Email Communication Macros Time Management Problem Solving Outlook

Census Taker

Brazilian Institute of Geography and Statistics

Jul 2022 - Dec 2022 (5 months)

Collected demographic data and administered questionnaires in the field, negotiated with residents, and developed a custom script and improvised solutions to speed interviews and protect devices in adverse conditions.

Field Data Collection Questionnaire Administration Scripting Problem Solving Communication Time Management

Education

Degrees, certifications, and relevant coursework

UniSenaiPR - Campus CIC

Bachelor of Engineering, Mechatronics Engineering

2020 - 2024

Activities and societies: Course final project: predictive model for B3 stock appreciation (2019-2023 data) using EDA, multiple linear regression, decision tree, and random forest; performance evaluation with R², MAE, RMSE.

Pursued Mechatronics Engineering at UniSenaiPR (Campus CIC) with coursework and projects including a predictive model for B3 stock appreciation using Python and machine learning.