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vitor siqueiraVS
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vitor siqueira

@vitorsiqueira

I build and maintain POS, desktop, and web applications using C#, .NET, React, and Node.js.

Brazil
Message

I build and maintain POS systems at Visual Software, delivering modules for promotions, discounts, surcharges, point redemption, post-sale card payments, and dual-screen customer displays. I work across a legacy VB6/C# application and PdvTouch, a C# system with WPF interfaces, while improving stability through troubleshooting, maintenance, and testing.

Previously, I developed React and Next.js projects at Codeminer42, created an Angular course-purchase website for Guairacá Aviation, and built dashboards and BI solutions with JavaScript and Python at Telnet Sistemas E Comunicacoes. My Computer Science degree and hands-on experience span web development, testing, databases, infrastructure, and technical support.

Experience

Work history, roles, and key accomplishments

Visual Software logoVS
Current

Junior Desktop Developer

May 2025 - Present (1 year 4 months)

I currently work as a Software Developer, focusing on the development and maintenance of two POS systems. One of them is a legacy system built with VB6 and C#, while the newer system, called PdvTouch, is developed in C# with WPF interfaces. In PdvTouch, I have worked on the development of new modules and important features, including promotions, discounts, surcharges, post-sale card payment flows,

Telnet Sistemas E Comunicacoes logoTC

System Administrator

Sep 2024 - May 2025 (8 months)

I oversee the administration and management of the company’s systems, streamlining processes, automations, and workflows to ensure operational efficiency. I develop and maintain dashboards and Business Intelligence solutions using JavaScript and Python, providing strategic support for decision-making. Currently, I lead a project in collaboration with the Municipal Government of Três Lagoas, where

Telnet Sistemas E Comunicacoes logoTC

System Administrator

Sep 2024 - May 2025 (8 months)

I oversee the administration and management of the company’s systems, streamlining processes, automations, and workflows to ensure operational efficiency. I develop and maintain dashboards and Business Intelligence solutions using JavaScript and Python, providing strategic support for decision-making. Currently, I lead a project in collaboration with the Municipal Government of Três Lagoas, where

K13 Agency Web logoKW

N1 Support Analist

May 2024 - Sep 2024 (4 months)

Working as a Technical Support Analyst N1 and Project Leader, I was responsible for managing hosting on Direct Admin, including configuration, maintenance, and SSL certificate management, as well as handling DNS settings. I managed sites on WordPress and OpenMage/Magento1, created content, coordinated teams via Teamwork, optimized SEO, analyzed data with Google Analytics, and managed products on G

K13 Agency Web logoKW

N1 Support Analist

May 2024 - Sep 2024 (4 months)

Working as a Technical Support Analyst N1 and Project Leader, I was responsible for managing hosting on Direct Admin, including configuration, maintenance, and SSL certificate management, as well as handling DNS settings. I managed sites on WordPress and OpenMage/Magento1, created content, coordinated teams via Teamwork, optimized SEO, analyzed data with Google Analytics, and managed products on G

Codeminer42 logoCO

Trainee Developer

Jan 2024 - Apr 2024 (3 months)

Working as a Front-End developer, I created one project per week over a 12-week period. This included testing with Cypress and Vitest, using the Next.js and React frameworks, and working with Redux, TypeScript, and JavaScript. I believe this experience has significantly enhanced my skills and knowledge in these areas.

Skills: User Experience (UX) · Data Modeling · Databases · Interpersonal Skills

Codeminer42 logoCO

Trainee Developer

Jan 2024 - Apr 2024 (3 months)

Working as a Front-End developer, I created one project per week over a 12-week period. This included testing with Cypress and Vitest, using the Next.js and React frameworks, and working with Redux, TypeScript, and JavaScript. I believe this experience has significantly enhanced my skills and knowledge in these areas.

Skills: User Experience (UX) · Data Modeling · Databases · Interpersonal Skills

Education

Degrees, certifications, and relevant coursework

UC

Universidade Estadual do Centro-Oeste

Bacharelado, Ciência da Computação

2020 - 2024

Universidade Estadual do Centro-Oeste logoUC

Universidade Estadual do Centro-Oeste

Bachelor's Degree, Computer Science

2020 - 2024

Bachelor's degree in Computer Science from Universidade Estadual do Centro-Oeste, completed in April 2024.

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