Back-end
Java Python Django Flask C Node.js REST APIs GraphQL gRPC PostgreSQL Redis MongoDB
available for opportunities
César
Santos
Back-end · DevOps · Security Engineer
Building resilient systems, secure pipelines, and scalable infrastructure. Specialized in Back-end, DevOps, DevSecOps, and Cybersecurity.
8+
years of experience
12+
projects delivered
8
certifications
3
languages
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{
"backend": ["Java","Python","Django","Flask","C","Node.js","REST APIs","GraphQL","gRPC","PostgreSQL","Redis","MongoDB"],
"ai": ["WhisperX","CUDA","Pandas","NumPy","Seaborn"],
"devops": ["Docker","CI/CD","Linux","Kubernetes"],
"cloud": ["OCI - Oracle Cloud","Linux","Nginx"],
"tools": ["Git","SSH","Bash/Shell","Wireshark","Postman","Swagger","Jira","Notion"]
}
{
"career": ["Security Engineering","DevOps / SRE"],
"devops": ["Terraform","ArgoCD","Helm"],
"cybersecurity": ["Pentest","Burp Suite","Metasploit","Nmap"],
"cloud": ["AWS","GCP","Azure"]
}
OCI Foundations [▓▓▓▓▓▓▓▓▓▓] 100% completed
OCI AI Foundations [▓▓▓▓▓▓▓▓▓▓] 100% completed
AWS Cloud Practitioner [▓▓▓▓▓▓▓▓▓░] 90% — exam pending
// studying via LINUXtips guide
CKAD [▓░░░░░░░░░] next
CKA [░░░░░░░░░░] planned
KCNA [░░░░░░░░░░] planned
KCSA [░░░░░░░░░░] planned
CKS [░░░░░░░░░░] planned
open to work
→ tail -f /var/log/api.log
about me
Who am I
César Santos Back-end · DevOps · Security cesarsantos.dev
Software engineer with experience in back-end development, cloud-native, automation, and cybersecurity. I build scalable, secure, and reliable solutions, focusing on performance, observability, and DevSecOps best practices. I have worked with data-driven systems, automation pipelines, infrastructure, and AI projects, connecting development and operations to deliver solutions with real impact.
LINUXtips Ambassador in Acre, Brazil
Back-end with Java, Python, Django, Flask, and Node.js
Cloud-native infrastructure with Kubernetes and Docker
Security: pentest, vulnerability analysis, SIEM
Robust CI/CD pipelines and GitOps, GitHub Actions
technologies
Stack & Skills
Back-end
AI & ML
DevOps
Cybersecurity
Cloud & Infra
Tools
currently studying
portfolio
Projects
BACK-END ↗
Painel das Eleições Brasileiras 2026
Dockerized dashboard for Brazil’s 2026 election results, built with Python, FastAPI, and JavaScript. Tracks official TSE data with automatic updates and state and municipality filters.
PythonFastAPIJavaScriptDocker
DATA SCIENCE ↗
NFLStatsLab
20 years of NFL data analysis (2003–2023). ETL, Exploratory Data Analysis, and visualizations with Pandas, NumPy, and Seaborn.
PythonPandasNumPySeabornGit
DEVOPS ↗
Primeiro Workflow com Github Actions
Simple CI/CD pipeline with GitHub Actions to automate validations, test workflows, and understand the basis of automations in DevOps projects.
GitHub ActionsCI/CD
DEVOPS ↗
LINUXtips Workspace
Practical workspace from the Linux for Cloud Native training — SSH troubleshooting challenges, mind maps, and logs from a DevOps project.
LinuxSSHNetworkingCloud Native
DEVOPS ↗
Construa: kubectl (mkube)
Go CLI that recreates kubectl to explore how Kubernetes works internally. The project includes 12 steps: API connection and authentication, context management, resource querying, real-time logs, command execution in containers, manifest application, and port-forward. To be developed in the Construa training, by LINUXtips.
GoKubernetesREST APIYAML
DEVOPS ↗
Giropops Status — Linux para Cloud Native
Web application that monitors HTTP service availability, records check history, and displays a status dashboard with Prometheus metrics. Built with Python, Flask, and Redis, the project will be used to practice Linux administration: SSH, permissions, systemd, log analysis, backups, and deploy automation. To be developed in the Linux para Cloud Native course, by LINUXtips.
PythonFlaskRedisLinuxsystemd
DEVOPS ↗
PICKStack — PICK 2026
Study platform with Pomodoro sessions, spaced repetition flashcards, and career paths, organized into microservices with Deno and SvelteKit. At PICK 2026, the challenge will be to operate this application: create Docker images, publish on Kubernetes, configure Helm and GitOps with ArgoCD, and monitor metrics, logs, and traces. Project to be developed during LINUXtips' training.
DockerKubernetesArgoCDHelmDenoSvelteKit
DEVOPS ↗
Giropops Status — Descomplicando Docker
Study project from Descomplicando o Docker, by LINUXtips, based on Giropops Status: a Python, Flask, and Redis application to monitor HTTP services, log checks, and expose Prometheus metrics. The practice covers creating and optimizing images with Dockerfiles, security with Distroless, persistence with volumes, networking between containers, and running multiple services with Docker Compose.
DockerDocker ComposePythonFlaskRedisPrometheus
BACK-END ↗
BookStore API
RESTful API for library management with authentication, full CRUD, and deploy on Heroku.
PythonDjangoPostgreSQLPostman
DEVOPS ↗
commandlinux.dev
Technical blog with automated publishing pipeline: for each Markdown post, a GitHub Actions workflow triggers LLM translation and generates the multilingual versions — from commit to deploy, no manual steps.
AstroGitHub ActionsCI/CDLLMVercel
certifications
Certifications
LINUXtips 2026
Creating Pipelines and Automations with GitHub Actions
AWS Treina Brasil · TIDWIT 2026
AWS Cloud Fundamentals
LINUXtips 2026
Uncomplicating Docker
Oracle 2025
Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate
Oracle 2025
Oracle Cloud Infrastructure 2025 Certified Foundations Associate
EBAC 2024
Full Stack Python Developer
EBAC 2025
Python Para Análise de Dados
EBAC 2022
SQL Para Análise de Dados
resume
Experience & Education
Out 2025 — Maio 2026
Software Engineer
SONDA — Tribunal de Justiça do Acre
Architected legal transcription pipeline with diarization (WhisperX + CUDA, NVIDIA A2000 GPU) in an offline environment. Designed a complete Flask backend for an AI-assisted bidding system with Keycloak + JWT, LLM integration, and pytest coverage. Modernized the Vera System with optimized PostgreSQL views. Interim technical leadership for a mixed dev + N1/N2 support team.
Mar 2024 — Out 2024
Software Developer
Iteracre — Instituto de Terras do Acre
Development of the State Land Registry System with PHP and CakePHP, automating land demarcation and title issuance. Management of containerized environments with Docker.
Set 2022 — Dez 2022
Data Analyst / Web Developer
XLand Holding — Remoto
Web development with PHP and Laravel, IT technical support, and SQL database management focusing on integrity and BI reports.
Fev 2019 — Ago 2022
Head of IT Division
Governo do Estado do Acre — SASDHM
Leadership of IT support and governance at the Secretariat of Human Rights. Digitization of workflows and structuring of a virtual technical support environment.
2021 — Jul 2025
Bachelor's Degree in Information Systems
Estácio Unimeta
Completed in July 2025.
Ago 2025
Postgraduate Degree in Cybersecurity — Red Team
FIAP
Specialization in offensive security, pentest, and Red Team.
contact
Let's talk
Open to opportunities
Have an interesting project? Let's connect.
Available for full-time positions, contracts, and freelance work in Back-end, DevOps, and Security.