AWS Certified Solutions Architect

Gabriel Siqueira Müller

Backend & Cloud Developer

AWS Certified Solutions Architect – Associate

gabrielsiqueiramuller@gmail.com | LinkedIn | GitHub

Summary

Backend & Cloud Developer and Computer Engineering student with professional experience in backend development, data integration, IT infrastructure, and business process automation. AWS Certified Solutions Architect – Associate with hands-on experience designing serverless applications, building REST APIs, developing data pipelines, and provisioning cloud infrastructure with Terraform and CI/CD.

Tech Stack

Cloud Projects

Mini Loom

A serverless video-sharing platform: upload a video, get a shareable link.

  • Built a serverless backend using FastAPI on AWS Lambda and API Gateway, with direct-to-S3 uploads through pre-signed URLs.
  • Implemented authentication with Amazon Cognito federated to Google, Aurora Serverless PostgreSQL, and an SQS-driven Lambda worker for asynchronous thumbnail generation.
  • Connected to Aurora through the RDS Data API instead of using a VPC and NAT Gateway, reducing infrastructure complexity and keeping estimated idle costs at approximately $0.70 per month.
  • Provisioned the complete infrastructure with Terraform and automated deployments using GitHub Actions with OIDC authentication.

GitHub Repository & Documentation

The Cloud Resume Challenge (AWS)

A serverless resume website deployed on AWS.

  • Deployed a secure static website using Amazon S3 and CloudFront with Origin Access Control (OAC) to restrict direct access.
  • Built a serverless backend API using API Gateway and AWS Lambda (Python), backed by a DynamoDB visitor counter.
  • Provisioned the infrastructure with Terraform and automated deployments using GitHub Actions.

GitHub Repository & Documentation

Professional Experience

Systems Analyst (Backend Development & Infrastructure)

Vertys Energy Group | July 2022 – Present

  • Re-architected and migrated the legacy integration between Sankhya ERP and sales platforms to AWS using Python and serverless services, reducing average synchronization time by 93%, from 7.5 minutes to 30 seconds; built a secure web portal using Cognito, API Gateway, Lambda, CloudFront, and S3 for monitoring orders and integration data.
  • Designed and implemented a serverless data lake using Amazon S3, Lambda, EventBridge, Parquet, Glue, and Athena, migrating data from existing Python/PostgreSQL pipelines into structured analytical datasets; integrated Amazon Bedrock to enable natural-language business analysis over validated company data.
  • Deployed and maintained a secure Linux-based server environment, enabling internal file sharing and access control for more than 100 employees.
  • Maintained network infrastructure and resolved more than 680 technical support tickets, achieving a 4.91/5 user satisfaction rating.

Education

Bachelor of Science in Computer Engineering

Universidade Tecnológica Federal do Paraná (UTFPR) – Expected Graduation: December 2026