Will

Willian Bretzke

Since 2020, turning coffee into code.

I am a senior developer who is enthusiastic about creating innovative and functional solutions for the web. I'm always looking for challenges that can turn ideas into real, impactful projects.

SC, BR

February 14, 2000

Joined September 2024

Experiences

Grupo IOB

Grupo IOB

January 2025 - PRESENT

Senior Full Stack Developer


Blip

Blip

December 2021 - December 2024


Senior Software Engineer

January 2024 - PRESENT

  • Conducted significant optimizations on the micro front-end, resulting in improvements in application loading from 20 seconds to 3 seconds or less;
  • Led and actively participated in the continuous evolution of the product;
  • Carried out detailed code reviews to ensure the quality and performance of the system;
  • Delivered demands with a high standard of quality within the established deadlines.

Mid-level Software Engineer

September 2022 - December 2023

  • I made continuous improvements to an application that was already processing more than 50 million database read and write operations per hour;
  • Used Redis to improve the application's performance;
  • Used Grafana for observability and monitoring of the back-end application;
  • I carried out load tests to validate improvements from one release to the next.

Chatbot Developer

December 2021 - August 2022

  • Created conversation flows using a low code tool;
  • Developed Javascript scripts for the flow;
  • I integrated APIs in C# to connect to the low code tool;
  • Implemented chatbots and APIs.

Adsomos

Adsomos

January 2021 - November 2021

Back-end Developer

  • I developed an asynchronous freight calculation logic in JavaScript that reduced the processing time from 15-20 seconds to 3 seconds or less;
  • I eliminated the manual deployment process and standardized automatic deployment using a GitLab trigger tool;
  • Made integrations with marketplaces, payment platforms, carriers and ERPs;
  • I integrated with PIX using the Central Bank manual.

Litoralcar

Litoralcar

July 2020 - January 2021

Web Developer

  • Developed responsive websites with Bootstrap;
  • Delivered on client demands within the stipulated timeframe;
  • I maintained legacy websites with versions prior to HTML5.

Skills

Programming language

C#
C#
PHP
PHP
TypeScript
TypeScript

Database

MySQL
MySQL
PostgreSQL
PostgreSQL
Cassandra
Cassandra
MongoDB
MongoDB
Firebase
Firebase

Frameworks

React.js
React.js
Angular.js
Angular.js
Next.js
Next.js
Nest.js
Nest.js

Tools

Git
Git
Docker
Docker
Figma
Figma
Azure
Azure

Others

Node.js
Node.js
HTML
HTML
CSS
CSS
SASS
SASS
Tailwind CSS
Tailwind CSS

Academic background

Faculdade das Américas

Faculdade das Américas

March 2020 - June 2024

Bachelor's degree in Information Systems.

  • Programming Fundamentals;
  • Web Development;
  • Databases;
  • Artificial Intelligence;
  • Software Engineering;
  • Others.