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Guilherme – React, Typescript, .NET Core, experts in Lemon.io

Guilherme

From Brazil (UTC-3)flag

Full-stack Web Developer|Middle-to-senior
Front-end Web Developer|Middle-to-senior

Guilherme – React, Typescript, .NET Core

Guilherme is a full-stack developer with over 5 years of experience building modern applications with .NET and React. He has hands-on expertise in AWS cloud, including Lambda, API Gateway, DynamoDB, and EKS, as well as containerization with Docker. His work emphasizes serverless, event-driven, and microservices-based solutions, combined with strong DevOps pipeline practices. Beyond coding, he has led and mentored junior and mid-level engineers.

5 years of commercial experience in
Asset management
Communications
IoT
Music and audio
Chatbots
SaaS
Main technologies
React
3 years
Typescript
3 years
.NET Core
5 years
JavaScript
3 years
Additional skills
AWS Lambda
Kubernetes
Docker
AWS
MySQL
MongoDB
RabbitMQ
DynamoDB
GitHub Actions
API Gateway
Pug
Microsoft SQL Server
Java EE
Direct hire
Possible
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Experience Highlights

Full-stack Developer
Sep 2024 - Aug 202511 months
Project Overview

The product allows radio businesses to manage music assets, generate schedules, and integrate with existing workflows.

Responsibilities:
  • Engineered a CI/CD pipeline with GitHub Actions, AWS Pipelines, and AWS CDK to automate deployments and infrastructure provisioning.
  • Built an event-driven data integration workflow to import client information from JSON files, reducing manual processing.
  • Implemented UI features such as asset creation and secure authentication, improving usability and access control.
  • Designed a schedule management solution with DynamoDB, Kubernetes, and SNS queues, enabling dynamic updates and real-time notifications to the UI.
  • Led and mentored junior and mid-level developers, conducted code reviews, and ensured adherence to best practices and high code quality.
Project Tech stack:
.NET Core
React
Typescript
API Gateway
AWS Lambda
Kubernetes
GitHub Actions
Full-Stack Developer
Aug 2023 - Sep 20241 year 1 month
Project Overview

It's a cloud-based playout system that manages stations’ audio, playlists, and metadata in real time.

Responsibilities:
  • Led a development team, performed code reviews, and enforced best practices for maintainable, scalable code.
  • Maintained and monitored a distributed, cloud-native system, proactively investigating and resolving production-critical issues.
  • Designed and implemented a low-latency feature to dynamically replace songs based on metadata tags.
  • Optimized AWS Lambda functions, improving performance and reducing execution time by ~40%.
Project Tech stack:
.NET Core
Kubernetes
AWS Lambda
Typescript
Pug
Full-Stack Developer
Sep 2020 - Aug 20232 years 11 months
Project Overview

It's a Brazilian-based conversational platform that enables businesses to automate customer communication across major digital messaging channels.

Responsibilities:
  • Developed back-end services in C# and front-end interfaces with React and TypeScript, applying clean code principles.
  • Maintained and optimized CI/CD pipelines with Azure DevOps, ensuring reliable deployments and smooth delivery cycles.
  • Automated the migration of internal pods to WhatsApp infrastructure, reducing manual overhead.
  • Designed and executed the migration process from Windows servers to Kubernetes clusters, improving scalability and reliability.
  • Built automation workflows for services, enhancing system maintainability and reducing operational effort.
  • Conducted code reviews to enforce quality standards and improve team collaboration.
Project Tech stack:
React
.NET Core
Microsoft SQL Server
Typescript
Full-Stack Developer
Dec 2018 - Jul 20201 year 6 months
Project Overview

It's a Brazilian technology company specializing in intralogistics solutions to optimize internal flows within factories, warehouses, and industrial yards.

Responsibilities:
  • Designed and developed a new location engine by combining sensor data and GPS signals to accurately track truck movement inside industrial yards.
  • Implemented an indoor positioning system leveraging sensors and triangulation to locate people within warehouses, improving safety and monitoring.
  • Introduced and configured Docker for containerization, streamlining deployment and improving development workflows.
Project Tech stack:
Java EE
Docker

Education

2021
Computer Engineering
Bachelor's degree

Languages

Portuguese
Advanced
English
Advanced

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