Guenter Bloemer, Developer in Blumenau - State of Santa Catarina, Brazil
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Guenter Bloemer

Verified Expert  in Engineering

Back-end Developer

Location
Blumenau - State of Santa Catarina, Brazil
Toptal Member Since
January 5, 2022

Guenter enjoys working with the back-end part of the software, where the business rules and requirements must be enforced. As a quick learner, he is able to understand and switch between businesses with ease. In every team, he was considered the go-to person when there were some issues his colleagues didn't know how to solve. Most of his experience is with the .NET framework, .NET Core, and Node.js, with enough front-end knowledge to make efficient REST or GraphQL APIs.

Portfolio

Mout'S Solues em TI
AngularJS, C#.NET, Azure SQL Databases, Profisee MDM, gRPC, C#, ASP.NET MVC...
Lariat Institute
React, React Native, Python, Node.js, GraphQL, Heroku, Netlify, Serverless...
Toptal
AngularJS, Pug, Stripe API, Stripe Checkout, MongoDB, Mongoose

Experience

Availability

Part-time

Preferred Environment

Windows, Amazon Web Services (AWS), Jira, Azure, Linux, Git, Netlify, Heroku, C#, C#.NET

The most amazing...

...project I've implemented is a certificate authority software to issue certificates in compliance with Brazil's regulatory agency, ICP-Brasil.

Work Experience

Senior Full-stack Developer

2020 - PRESENT
Mout'S Solues em TI
  • Created a new portal from scratch to maintain the data that the client considers crown jewel, with strict permissions and workflows applied, which had the first version deployed after three months of work.
  • Assisted the PO in making decisions on giving the users the functionality they wanted in a scalable way.
  • Helped with interviews to contract new developers, where my opinion was weighted to decide if the applicant would be contracted or not.
  • Kept evolving the created portal as users asked for new features, improvements, or integrations with other software.
Technologies: AngularJS, C#.NET, Azure SQL Databases, Profisee MDM, gRPC, C#, ASP.NET MVC, Git, Azure, SQL, Full-stack, Back-end, Front-end, Angular, NPM, JavaScript, TypeScript, HTML, CSS, Regex, SCSS, APIs, Architecture, API Architecture, .NET, ASP.NET, Microsoft SQL Server, Software Development, Solution Architecture, Technical Leadership, Cloud Environments, REST APIs, .NET Core

Senior Full-stack Developer and Tech Lead

2018 - PRESENT
Lariat Institute
  • Engaged in creating the main product to increase the LTV of customers.
  • Created Excel tools that our customers use to control their investment strategies.
  • Built integrations with payment and CRM services to control our customers' subscriptions and available services.
Technologies: React, React Native, Python, Node.js, GraphQL, Heroku, Netlify, Serverless, Docker, NPM, Cron, Auth0, HubSpot, SCSS, APIs, Bootstrap, Architecture, Amazon Web Services (AWS), Next.js, Software Development, Solution Architecture, CTO, Technical Leadership, Cloud Environments, Chrome Extensions, REST APIs, .NET Core, Google Sheets API, MongoDB, Mongoose

Senior Front-end Developer

2022 - 2022
Toptal
  • Created a marketplace for users to contract plans to announce their jobs on different platforms like LinkedIn.
  • Adapted landing pages to be responsive for mobiles.
  • Created Angular components to speed up the creation of simple CRUD pages.
Technologies: AngularJS, Pug, Stripe API, Stripe Checkout, MongoDB, Mongoose

Senior Full-stack Developer

2009 - 2020
Quick Soft Tecnologia
  • Created a C# library for digital signatures supporting all kinds of signatures.
  • Developed an internal tool for background master and worker services when Akka or similar services still didn't exist.
  • Built the new software to bill customers according to their contract type, with contracts based on monthly value or hourly based on actual employee hours spent for that contract.
  • Created a whole framework to generate web applications based on metadata defined in YAML format files. The application generated used .NET core, Vue.js, and Postgres.
Technologies: C#.NET, Oracle, PostgreSQL, Vue, Node.js, Redis, SMTP, Crystal Reports, C#, ASP.NET MVC, Git, Linux, SQL, Full-stack, Back-end, Front-end, NPM, JavaScript, TypeScript, HTML, CSS, Regex, Cron, APIs, Architecture, API Architecture, .NET, ASP.NET, Software Development, Solution Architecture, Technical Leadership, Chrome Extensions, REST APIs, .NET Core, XML, XML Parsing, MySQL

S.O.F.I.A.

A Python back-end project that collected data from news feeds tagged with finance, politics, and business, used to evaluate how that news could affect the stock market by using machine learning, trained with news from the past and the relative movement on the stock market that day.

Alicerce

An API that started as a REST Python API but was later converted to a GraphQL API in Node.js. It collects data from companies listed in the stock market and automates the financial indicators, computing the company balances.

FichaRPG

This Windows Forms application for playing tabletop RPGs like Dungeons & Dragons was created by me and some friends. I was the only developer and used Windows Forms and SQLite. Heavy use of regex to compute damage formulas for skills and enhance players' stats during battle.

It is a really old project that we still use for playing.

Languages

C#.NET, C#, SQL, JavaScript, TypeScript, HTML, CSS, Regex, SCSS, Python 3, Python, GraphQL, Elixir, Pug, XML

Frameworks

ASP.NET MVC, .NET, ASP.NET, .NET Core, gRPC, Angular, Express.js, AngularJS, React Native, Bootstrap, Next.js

Libraries/APIs

REST APIs, Node.js, Vue, React, Stripe API, Google Sheets API

Tools

Git, Crystal Reports, NPM, Cron, Mongoose, Jira, Auth0, Stripe Checkout

Paradigms

REST, API Architecture

Other

Full-stack, Back-end, APIs, Architecture, Software Development, Solution Architecture, Front-end, Technical Leadership, SMTP, Profisee MDM, Serverless, HubSpot, CTO, Chrome Extensions

Platforms

Windows, Oracle, Firebase, Azure, Linux, Netlify, Heroku, Docker, Amazon Web Services (AWS)

Storage

PostgreSQL, SQLite, Microsoft SQL Server, MongoDB, Redis, Azure SQL Databases, Cloud Environments, XML Parsing, MySQL

FEBRUARY 2018 - PRESENT

Exam 483: Programming in C#

Microsoft