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itamarsb/README.md

👋 Hi, I'm Itamar de Sá Britto Júnior

Computer Engineering | Cloud, DevOps, SRE, Observability & Backend Engineering

Building and delivering practical solutions in cloud infrastructure, automation, observability, APIs, monitoring and reliability.


Technologies & Tools

AWSLinuxTerraformDockerNGINXGitHub ActionsPythonFastAPINode.jsJavaScriptTypeScriptOpenAPIPostmanPrometheusGrafanaOpenTelemetryZabbixk6PostgreSQLOracleDBeaverSQLHTML5CSS3


About Me

I am a Computer Engineering undergraduate in the final stage of my degree, with more than 20 years of professional experience in operations, management, requirements analysis, project delivery and business process improvement within the Brazilian electric power sector.

I currently focus my professional development and freelance work on Cloud Computing, DevOps, Observability, Backend/API Engineering and Site Reliability Engineering (SRE), combining hands-on engineering projects with my previous experience in critical operational environments.

My technical work includes AWS, Linux, Terraform, Docker, Python, FastAPI, PostgreSQL, Prometheus, Grafana and OpenTelemetry, covering cloud infrastructure, automation, APIs, monitoring, observability, troubleshooting and technical documentation.

Alongside my previous formal responsibilities, I also designed, developed and maintained internal web applications, corporate intranets, databases and automation tools used by regional teams, including requirements analysis, interface design, application development, deployment, user support and production maintenance.

Today, I continue consolidating and modernizing this experience through freelance engagements, engineering laboratories, open-source collaboration and portfolio projects designed around practical operational scenarios.


Current Professional Focus

  • Providing freelance technical services and developing scoped projects in Cloud, DevOps, infrastructure, APIs, automation and observability;
  • Building and maintaining hands-on engineering repositories covering Cloud, Backend, DevOps, Observability and Infrastructure Operations;
  • Completing my undergraduate degree in Computer Engineering;
  • Developing my capstone project around an open-source Observability Engineering Framework;
  • Preparing for the AWS Certified Solutions Architect – Associate certification;
  • Expanding practical knowledge in Terraform, Linux administration, Docker, CI/CD and cloud infrastructure;
  • Contributing to open-source projects through technical documentation, architecture diagrams and engineering improvements.

Featured Projects

ProjectMain FocusDescription
AWS Cloud Engineering LabAWS · Linux · Terraform · IaCHands-on cloud engineering laboratories covering AWS account preparation, IAM, EC2, Systems Manager, CloudWatch, networking, automation and Infrastructure as Code.
Cloud Infrastructure Operations LabAWS Operations · Linux · Zabbix · DockerHands-on infrastructure operations portfolio focused on Linux administration, cloud operations, monitoring, troubleshooting and practical infrastructure operations.
Grafana Dashboard Engineering LabGrafana · Prometheus · PromQL · ObservabilityProgressive dashboard engineering laboratories covering Grafana, Prometheus, Node Exporter, PromQL, infrastructure monitoring, visualization design and observability practices.
Python Backend Engineering LabPython · FastAPI · PostgreSQLProgressive backend engineering laboratories covering APIs, validation, databases, testing, containers, CI/CD and cloud deployment.
Node.js Backend Engineering LabJavaScript · TypeScript · Node.jsPortfolio-oriented backend engineering roadmap with practical laboratories in Node.js, TypeScript, APIs, databases, testing and deployment.
API Engineering LabREST APIs · FastAPI · OpenAPI · PostmanPractical laboratories focused on API design, documentation, validation, integration, testing and production-oriented engineering practices.
Observability Engineering FrameworkOpenTelemetry · Prometheus · Grafana · SREComputer Engineering capstone project for building an open-source observability framework using metrics, logs, traces, SLI/SLO concepts and performance testing.

Technical Focus

Cloud & Infrastructure

AWS · IAM · EC2 · Systems Manager · CloudWatch · Linux · Networking · Terraform · Docker · NGINX

Backend & API Engineering

Python · FastAPI · JavaScript · TypeScript · Node.js · REST APIs · OpenAPI · Postman

Databases

PostgreSQL · Oracle · SQL · DBeaver

Observability & Reliability

OpenTelemetry · Prometheus · Grafana · Loki · Tempo · Alertmanager · Zabbix · k6

Engineering Practices

Git · GitHub · GitHub Actions · CI/CD · Technical Documentation · Troubleshooting · Architecture Diagrams


Certifications & Education

  • Computer Engineering Undergraduate — final stage;
  • AWS Certified Cloud Practitioner;
  • Preparing for Linux Essentials;
  • Preparing for AWS Certified Solutions Architect – Associate;
  • Future study path: Terraform, Linux, Kubernetes and advanced AWS architecture.

Secondary Technical Interests

Embedded Systems · C/C++ · ESP32 · IoT · Telemetry Systems · Sensors · RF Communications · Aviation Electronics


Freelance Services

Available for scoped freelance projects involving:

  • Cloud infrastructure and AWS environments;
  • Linux administration and troubleshooting;
  • Infrastructure as Code with Terraform;
  • Monitoring and observability with Prometheus, Grafana and OpenTelemetry;
  • Python automation and API development with FastAPI;
  • PostgreSQL and database-related implementation;
  • Docker environments and application troubleshooting;
  • Technical documentation, architecture diagrams and engineering procedures.

For professional inquiries, please contact me through LinkedIn or the freelance platforms listed below.


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This profile documents my engineering work through practical laboratories, portfolio projects, freelance technical work, technical documentation and open-source collaboration.

Pinned Loading

  1. Observability-Engineering-FrameworkObservability-Engineering-FrameworkPublic

    Final Project for the Undergraduate Degree in Computer Engineering, developing an Observability Engineering Framework using only open-source software and low-cost hardware.

  2. aws-cloud-engineering-labaws-cloud-engineering-labPublic

    A place where we will document, test, measure costs, improve the architecture, and automate a cloud environment on Amazon Web Services - AWS.

    HCL 1 1

  3. cloud-infrastructure-operations-labcloud-infrastructure-operations-labPublic

    Laboratórios práticos de AWS, Linux, redes, Terraform, monitoramento e troubleshooting para Analistas Cloud Júnior.

  4. python-backend-engineering-labpython-backend-engineering-labPublic

    Hands-on laboratory repository focused on modern Python backend development using FastAPI, PostgreSQL, Docker, automated testing and deployment.

  5. nodejs-backend-engineering-labnodejs-backend-engineering-labPublic

    Repositório contendo laboratórios práticos voltados para vagas de Desenvolvedor Backend Júnior utilizando Node.js, TypeScript, NestJS, PostgreSQL, Docker, Jest e boas práticas de arquitetura.

  6. grafana-dashboard-engineering-labgrafana-dashboard-engineering-labPublic

    Hands-on lab for engineering operational, technical, executive, and customer-facing Grafana dashboards using Prometheus, OpenTelemetry, APIs, SQL databases, exporters, and multiple data sources.