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Samuel – .NET, .NET Core, C#, experts in Lemon.io

Samuel

From Brazil (UTC-3)

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Back-end Web DeveloperMiddle-to-senior
6 years of commercial experience
Banking
Credit and lending
E-commerce
Fintech
Food and beverages
Govtech
Healthcare
Healthtech
Human resources
Pet care
Public services
Recruiting
Sales
Smart cities
HRMS
SaaS
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Samuel – .NET, .NET Core, C#

Samuel is a competent .NET developer with 6 years of professional experience. He is skilled in API design focused on scalability, performance, and maintainability. He also has experience with front-end technologies like Angular and React. Samuel leverages AI tools daily to optimize code efficiency and streamline development. With a lifelong learning mindset, he constantly enhances his skills.

Main technologies
.NET
6 years
.NET Core
6 years
C#
6 years
PostgreSQL
2 years
Entity
3 years
Additional skills
Angular
AWS
React
Docker
CI/CD
GitHub Actions
Selenium
GitHub Copilot
NoSQL
AWS Lambda
Jenkins
SQL
DynamoDB
Kubernetes
Microservices
API
Kafka
API Gateway
Microsoft Azure
ElasticSearch
Azure Functions
RabbitMQ
MongoDB
Azure DevOps
JavaScript
Ready to start
April 16th
Direct hire
Potentially possible
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Experience Highlights

Back-end Developer
Apr 2021 - Ongoing3 years 11 months
Project Overview

The payments microservices of the McDonald's global mobile app to manage customer cards, payment methods, and sales transactions with PSPs and integrate with fraud service providers (FSPs).

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Designed and implemented new payment methods integration;
  • Created new queues and consumers for SQL data migration in AWS SQS;
  • Updated a version of payment provider integration;
  • Worked on troubleshooting and providing hotfixes for production issues;
  • Developed unit tests with XUnit and end-to-end integration tests using Cypress;
  • Refactored code for SonarQube compliance;
  • Provided support for production deployments by monitoring prod transactions, logs, and performance;
  • Collaborated with cross-functional teams.
Project Tech stack:
.NET
.NET Core
ADO.NET
API
API Gateway
API testing
ASP.NET
ASP.NET CORE
ASP.NET Web API
AWS
AWS Lambda
Agile
Amazon RDS
Amazon SQS
C#
CI
CD
Cassandra
Confluence
Consul
Containers
Cryptography
Cypress
Dependency Injection
Docker
Docker Compose
DynamoDB
ElastiCache
Git
GitHub Actions
GitHub Copilot
Integration testing
JSON
Jenkins
Kubernetes
Kafka
Manual Testing
Microservices
NoSQL
PayPal Api
Postman
REST API
Redis
SOLID
YAML
Visual Studio Code
Vault
Unit testing
Selenium
SonarQube
SQL
SQL Server
Microsoft SQL Server
Swagger
Back-end Developer
Jan 2021 - Ongoing4 years 2 months
Project Overview

It's a SaaS for digital hiring in Brazil that collects employee data and documents via OCR and integrates them with popular payroll systems.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Optimized the back end by refactoring code and adding caching to boost response time;
  • Designed and provided technical analysis for new features implementation;
  • Incorporated payroll system integrations such as SAP and TOTVS;
  • Delivered bug fixes and feature enhancements for the Angular front end.
Project Tech stack:
.NET Core
.NET
API
ASP.NET
Angular
Angular JS
Azure DevOps
Azure Functions
Microsoft Azure
C#
CQRS
Dependency Injection
Containers
ElasticSearch
Git
JSON
JSON Schema
Kanban
MongoDB
NoSQL
PostgreSQL
Postman
RabbitMQ
Redis
SPA
SQL
Swagger
TelegramBotAPI
Web Workers
Webhooks
Full-stack Developer
May 2020 - May 20211 year
Project Overview

It's a medical certificate emission system to be used by medical centers across Espírito Santo state in Brazil.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Built the back end and front end of the medical certificate system from scratch;
  • Delivered bug fixes for a legacy system built with WebForms and jQuery;
  • Created unit tests to ensure code reliability;
  • Handled project deployment using Microsoft Azure.
Project Tech stack:
.NET Core
Angular
PostgreSQL
REST API
JavaScript
Trello
Azure DevOps
ASP.NET
Back-end Developer
Mar 2020 - Jan 202110 months
Project Overview

It's the company responsible for developing and maintaining city hall's public systems. The projects included user authentication and pet adoption systems.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Added new features to the authentication system used by all city hall services;
  • Delivered bug fixes and new features for a public pet adoption system;
  • Set up a data replication system between databases using RabbitMQ queues.
Project Tech stack:
.NET
.NET Core
jQuery
Microsoft SQL Server
PostgreSQL
Redmine
Jenkins
Redis
SQL
JavaScript
CSS
RabbitMQ
Entity
Full-stack Developer
Jun 2019 - Mar 20209 months
Project Overview

It's a Brazilian bank offering financial solutions for customers and local companies in Paraná and Rio Grande do Sul states.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Improved an ASP.NET application for managing customer credit cards with bug fixes and new features;
  • Contributed to migrating a legacy application to .NET Core;
  • Built a full-stack project from scratch with React and .NET Core;
  • Integrated Google Maps API and PostgreSQL geolocation queries to find nearby stores for customers;
  • Created unit tests using XUnit and NUnit frameworks.
Project Tech stack:
.NET
.NET Core
C#
PostgreSQL
REST API
jQuery
CSS
JavaScript
Kibana
ASP.NET MVC
MVC
React
Google Maps API
NUnit

Languages

English
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