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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

VS
Current

Junior Desktop Developer

Visual Software

May 2025 - Present (1 year 5 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,

TC

System Administrator

Telnet Sistemas E Comunicacoes

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

TC

System Administrator

Telnet Sistemas E Comunicacoes

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

KW

N1 Support Analist

K13 Agency Web

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

KW

N1 Support Analist

K13 Agency Web

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

CO

Trainee Developer

Codeminer42

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

CO

Trainee Developer

Codeminer42

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

UC

Assistente de TI

Universidade Estadual do Centro-Oeste

May 2023 - Dec 2023 (7 months)

I performed preventive and corrective maintenance on university hardware, collaborating with the technical team to resolve hardware issues, and actively participated in the installation and configuration of new components.

UC

Assistente de TI

Universidade Estadual do Centro-Oeste

May 2023 - Dec 2023 (7 months)

I performed preventive and corrective maintenance on university hardware, collaborating with the technical team to resolve hardware issues, and actively participated in the installation and configuration of new components.

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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