I am pleased to write to you and express my interest in joining your development team. After seeing your job posting on LinkedIn, I was motivated by the opportunity to work in a professional environment that values innovation, software quality, and collaborative teamwork. I am a software developer with experience in both frontend and backend, specializing in web technologies and integrated systems. I am currently working at Excelsis S.A. as a full-stack developer, contributing to large-scale government projects such as SENACSA and the National Directorate of Public Procurement. In this role, I have worked with technologies such as Java, Angular, Node.js, Docker, PostgreSQL, Swagger API, GitLab, among others, covering everything from development to technical support and continuous system improvement. Previously, I worked at Araitek S.R.L. as a web developer, where I built and integrated backend and frontend solutions using agile methodologies (SCRUM), Git version control, and tools such as React.js, Ruby on Rails, Laravel, Django, HTML/CSS, and REST APIs. I was responsible for complete modules and ongoing maintenance of web applications for clients in the automotive sector. Additionally, I have experience in IoT (Internet of Things), having developed graphical interfaces and monitoring systems by integrating technologies like Node-RED, JSON Web Token, and control devices using React, Docker, and PostgreSQL. This allows me to handle projects that combine both hardware and software when the challenge requires it. I also have experience developing desktop applications and installers using Java (Launch4j and Inno Setup), such as a digital signature tool for SENACSA and a load control system for Petropar. I consider myself an autonomous, fast learner, proactive, and team-oriented professional, always committed to achieving goals. I enjoy solving technical challenges and creating efficient solutions that provide real value to clients. I am excited about the possibility of contributing my skills and continuing to grow professionally alongside the high-level team at Inetum. I am available for an interview or to provide any additional information you may need. Thank you for your time and consideration. Sincerely, Agustín Villarreal

Agustin Villarreal

I am pleased to write to you and express my interest in joining your development team. After seeing your job posting on LinkedIn, I was motivated by the opportunity to work in a professional environment that values innovation, software quality, and collaborative teamwork. I am a software developer with experience in both frontend and backend, specializing in web technologies and integrated systems. I am currently working at Excelsis S.A. as a full-stack developer, contributing to large-scale government projects such as SENACSA and the National Directorate of Public Procurement. In this role, I have worked with technologies such as Java, Angular, Node.js, Docker, PostgreSQL, Swagger API, GitLab, among others, covering everything from development to technical support and continuous system improvement. Previously, I worked at Araitek S.R.L. as a web developer, where I built and integrated backend and frontend solutions using agile methodologies (SCRUM), Git version control, and tools such as React.js, Ruby on Rails, Laravel, Django, HTML/CSS, and REST APIs. I was responsible for complete modules and ongoing maintenance of web applications for clients in the automotive sector. Additionally, I have experience in IoT (Internet of Things), having developed graphical interfaces and monitoring systems by integrating technologies like Node-RED, JSON Web Token, and control devices using React, Docker, and PostgreSQL. This allows me to handle projects that combine both hardware and software when the challenge requires it. I also have experience developing desktop applications and installers using Java (Launch4j and Inno Setup), such as a digital signature tool for SENACSA and a load control system for Petropar. I consider myself an autonomous, fast learner, proactive, and team-oriented professional, always committed to achieving goals. I enjoy solving technical challenges and creating efficient solutions that provide real value to clients. I am excited about the possibility of contributing my skills and continuing to grow professionally alongside the high-level team at Inetum. I am available for an interview or to provide any additional information you may need. Thank you for your time and consideration. Sincerely, Agustín Villarreal

Available to hire

I am pleased to write to you and express my interest in joining your development team. After seeing your job posting on LinkedIn, I was motivated by the opportunity to work in a professional environment that values innovation, software quality, and collaborative teamwork.
I am a software developer with experience in both frontend and backend, specializing in web technologies and integrated systems. I am currently working at Excelsis S.A. as a full-stack developer, contributing to large-scale government projects such as SENACSA and the National Directorate of Public Procurement. In this role, I have worked with technologies such as Java, Angular, Node.js, Docker, PostgreSQL, Swagger API, GitLab, among others, covering everything from development to technical support and continuous system improvement.
Previously, I worked at Araitek S.R.L. as a web developer, where I built and integrated backend and frontend solutions using agile methodologies (SCRUM), Git version control, and tools such as React.js, Ruby on Rails, Laravel, Django, HTML/CSS, and REST APIs. I was responsible for complete modules and ongoing maintenance of web applications for clients in the automotive sector.
Additionally, I have experience in IoT (Internet of Things), having developed graphical interfaces and monitoring systems by integrating technologies like Node-RED, JSON Web Token, and control devices using React, Docker, and PostgreSQL. This allows me to handle projects that combine both hardware and software when the challenge requires it. I also have experience developing desktop applications and installers using Java (Launch4j and Inno Setup), such as a digital signature tool for SENACSA and a load control system for Petropar.
I consider myself an autonomous, fast learner, proactive, and team-oriented professional, always committed to achieving goals. I enjoy solving technical challenges and creating efficient solutions that provide real value to clients.
I am excited about the possibility of contributing my skills and continuing to grow professionally alongside the high-level team at Inetum. I am available for an interview or to provide any additional information you may need.

Thank you for your time and consideration.
Sincerely,
Agustín Villarreal

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
English
Fluent

Work Experience

Graphic Interface Developer & Real-time Monitoring at Petropar
January 1, 2022 - November 16, 2025
Development of a web and desktop application for real-time monitoring of Multi Load IIE equipment; implementation of a traceability system for fuel dispatch; generation of automated reports for Plant Management; UI for Plant Management and Industrial Safety departments.

Education

Electronic Engineer at National University of Asunción
January 11, 2030 - November 16, 2025
Computer Engineering at National University of Asunción (UNA) – San Lorenzo
January 1, 2013 - December 31, 2015
Electronic Engineer (Industrial Control) at Polytechnic Faculty, National University of Asunción (UNA) – San Lorenzo
January 11, 2030 - November 16, 2025
Final Degree Project: Design of an Industrial Network for the Automation of the Fuel Dispatch Pump Room at National University of Asunción
January 11, 2030 - December 2, 2023

Qualifications

Artificial Intelligence Bootcamp
September 1, 2024 - December 1, 2024
SCADA System and Industrial Communication Certificate
August 1, 2020 - December 1, 2020
SQL Server from Scratch (Udemy)
December 1, 2023 - January 31, 2024
Introduction to Python for Industry 4.0
April 1, 2024 - May 1, 2024
Web Development with Django and Docker
June 1, 2024 - July 1, 2024
SCADA System and Industrial Communication Certificate
August 1, 2020 - December 31, 2020
SQL Server from Scratch
December 1, 2023 - January 31, 2024
Introduction to Python for Industry 4.0
April 1, 2024 - May 31, 2024
Web Development with Django
June 1, 2024 - July 31, 2024

Industry Experience

Software & Internet, Education, Government, Energy & Utilities, Manufacturing, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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