Open to new opportunities

Davi D'andréa Siqueira C# / .NET & Full Stack Developer

Limeira, SP - Brazil

👋 Hi, I can help you with... 🙌

Making your
Dream Projects
come True

With the goal of successfully delivering: UX/UI, Constructive impact, Responsiveness and Accessibility

My Skills

With dedication and determination, I immersed myself in the most important Web developing topics to carry out my work in a clean and professional environment!

Web Development

Web Development

Website creation using UX / UI Designs, Responsiveness, Accessibility. All with HTML, CSS, JS and Frameworks!

C# & .NET

C# & .NET

Mini-Projects while developing and preparing to use in professional workspace environment!

React.Js

React.Js

Node.js, EJS, Express.Js, React! Always learning with these amazing JavaScript Frameworks to make projects!

SQL

SQL

Database creation and queries. I have been in touch with: MariaDB, ORACLE (TOAD), MySQL

JAVA

JAVA

As a part of Back-end Development, I'm learning about OOP, Programming Logic and making projects.

Languages

Languages

Native Portuguese, Fluent English, Spanish, Basic French! I have a dream to experience multicultural workplaces!

Education & Professional Experience

My current field of study, course, and professional experiences that I am gaining through learning at universities and external activities.

Professional Experience

Professional Experience

Hino Sistemas

02/2025 - Present
  1. Customer Success & C# Developer Promoted 07/2026 - Present
  2. Support Analyst 02/2025 - 07/2026

Develop tools in C# .NET with the support team to improve HINO ERP functionality and the user experience.

  • Analyze and update large datasets using SQL, supporting the investigation and solving, new Features and debugging the Sofware.
  • Support customers and help improve resolution times (SLA) across tax, finance, accounting, logistics, sales, purchasing and customization modules
Professional Experience

Praticx Sistemas

01/2025 - 02/2025

System support and technical troubleshooting, database queries (SQL).

Professional Experience (Intern)

Limeira City Hall

08/2024 - 01/2025
  1. Internship 08/2024 - 01/2025

Internship in the IT sector, call handling, computer maintenance, and support:

  • Increased the average response time for calls resolved in less than one day by +15% (60% to 74.78%) since my arrival;
  • I handled more than 420 calls, maintenance requests, and related tasks during a 6-month period;
  • High proficiency, quick self-learning, and learning essential tasks for the IT field, allowing me to quickly adapt to resolve calls in a wide range of fields, whether technical or maintenance;

Education & Courses

College

UNIP - Computer Science

2024 - 2028

Bachelor's degree in CC, making projects, exams and a Great AVERAGE on them.

Course Certification

Senac - CCNAv7: introduction to networks

2025

Activities and groups: CCNAv7: introduction to networks - CCNA 1 (Networks). Network topics, theoretical applications, and a wide range of technical information. Configuring network protocols according to the OSI and TCP/IP model layers...

Education

Website Development

2023 - Atual

Various website templates covering topics such as the environment, cultures, technology, and more.

Education

FULL Java Course - Nélio Alves

2025

Developed skills in JAVA, as such its visual Frames (such as SWING, AWT), and application creation.

Education

The Complete 2024 Web Development Bootcamp - Dr Angela Yu.

2024

Developed skills in HTML, CSS, JAVASCRIPT, Framework such as NODE.JS, EXPRESS.JS, EJS AND REACT.

Education

FULL SQL COURSE - Alura

2024

Learning to create, query, and use databases with SQL, NoSQL, and much more with the various branches of the course.

Want to Contact me?

You can contact me through the options below.

FAQ: Frequently Asked Questions...

If you have any questions about me or my services, feel free to contact me using the options above!

My name is Davi D'andréa Siqueira, I am 21 years old and I live in LIMEIRA (SÃO PAULO), BRAZIL. I am a new programmer in the market with the dream of developing, learning, and living in the high tech field. My social media accounts are listed below in the footer.

Website development for all devices, back-end development, and databases queries; I maintain a focus on these fields.

I am studying Computer Science and am constantly taking online courses in search of knowledge and practice. I also did an internship in IT at the city hall of Limeira, worked at Praticx Sistemas, and currently work at Hino Sistemas.

Aiming for mutual respect and teamwork at all times, as well as sharing knowledge and helping coworkers.

Programming skills, proactivity and task completion, teamwork, proficiency in English (FLUENT), Spanish (Intermediate), and French (Basic).
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