Marcus Vinicius Silva Cartágenes.

Tech Lead · Fullstack Engineer

Rio de Janeiro, Brazil mvcartagenes@gmail.com mcartagenes.com GitHubLinkedIn

About

Tech Lead and fullstack engineer building products that scale — from mobile apps to the cloud that runs them. Music lover on the side.

Over a decade shipping software end to end: frontend, backend and the infrastructure underneath. At Globo.com I helped deliver content to millions of people at the same time with serverless, event-driven and realtime systems. Today I lead engineering at ShrEDIT, from product conception to mobile development and the whole cloud stack — with AI built into both the product and the way we work.

I care about teams moving in sync toward a common goal, and about software that stays fast, observable and reliable as it grows.

Experience

  1. ShrEDIT · Tech Lead

    Oct 2024 – Present · 2y

    Leading engineering end to end — from shaping the product to shipping the mobile app and owning the infrastructure behind it.

    • Part of product conception, turning ideas into features from discovery to release
    • Leading mobile development with React Native and Expo
    • Owning the entire cloud infrastructure on GCP and AWS: Docker, Kubernetes, scalability and reliability
    • Observability from day one: metrics, tracing and alerting with Grafana, Prometheus, OpenTelemetry and Sentry
    • Shipping AI-powered features: generated teleprompter scripts and performance insights on users' videos, built with Claude, OpenAI and Gemini on Vertex AI
    • Leading AI adoption across the team: AI-assisted development with Claude Code, Codex and Cursor, plus MCP servers and agents automating our workflows

  2. Globo.com · Software Engineer · Mid-level → Specialist

    Jun 2018 – Sep 2024 · 6y 3m

    Frontend, backend and infrastructure for Brazil's largest media portal, delivering content to millions of people at the same time.

    • Serverless infrastructure: event-driven architectures, messaging, FaaS and DBaaS
    • Realtime systems serving live content to millions of concurrent users
    • Microfrontends architecture
    • SEO optimizations
    • Performance tuned for low-end devices and slow networks
    • Frontend with JavaScript and Go (WebAssembly)

  3. Universidade Ceuma · Fullstack Developer · IT Center (NTI)

    Jun 2016 – Jun 2018 · 2y

    Where my career took shape: building the software behind an entire university — the systems students, faculty and staff relied on every day, from enrollment to finance.

    • Java backends and REST APIs powering the university's core academic and administrative systems
    • Solving real education problems, integrating different ecosystems across the whole institution
    • Web apps with React and Angular
    • Native Android apps with Kotlin
    • Deploy pipelines and CI with Jenkins and Ansible

  4. Frade Tecnologia · Fullstack Development

    Apr 2015 – Feb 2016 · 10m

    Application developer for home automation and security systems with biometric authentication, remote communication and management with Java and C.

  5. Ostensiva Segurança · Backend Development

    Mar 2014 – Feb 2015 · 11m

    Backend development with the Java environment (SE & EE), integration interfaces for external applications using REST. Hybrid mobile development using Ionic and NativeScript.

Skills

Leadership & Product

  • Tech leadership: guiding architecture, technical decisions and the team's delivery
  • Product conception: from discovery and scoping to release
  • Agile: SCRUM and XP — events, tools and practices
  • Quality first: unit, acceptance, e2e and load testing

AI Engineering

  • AI in the product: LLM-powered script generation and video performance insights with Claude, OpenAI and Gemini (Vertex AI)
  • AI-assisted development: Claude Code, Codex, Cursor and Copilot for coding, review, refactoring and debugging
  • Team adoption: defining AI workflows, tooling and best practices for the whole team
  • Automation: MCP servers and AI agents in CI/CD and day-to-day operations

Cloud & Infrastructure

  • Cloud computing: GCP (primary) and AWS, owning infrastructure end to end
  • Docker and Kubernetes: containerized workloads, scalability and reliability
  • Serverless: event-driven architectures, messaging, FaaS and DBaaS
  • Observability: metrics, tracing and alerting with Grafana, Prometheus, OpenTelemetry, Cloud Trace, Sentry and PostHog
  • CI/CD: GitLab CI, Jenkins and Ansible

Backend

  • Go, Node.js, Java and Kotlin (Spring)
  • Realtime systems for millions of concurrent users
  • APIs and integrations between different ecosystems
  • NoSQL / SQL: Redis, Cassandra, MongoDB, Postgres, MySQL

Frontend & Mobile

  • React, React Native and Expo: web and mobile apps
  • Microfrontends architecture
  • Performance for low-end devices and slow networks, PWA
  • SEO: structured data, standards and best practices
  • Go (WebAssembly) on the frontend

Minor experience with Python and Ruby.

Education

  • Bachelor in Information Systems · Uniceuma 2018

Publications

  • Software for the purpose of promoting fine motor skills of autistic children aged 4–6 through playful and competitive activities. Computer on the Beach, 2016.

Awards

  • Application aimed at people with food intolerances (lactose, gluten…) to find places to eat more easily. Second prize at Startup Weekend 2017 — São Luís, Maranhão, Brazil.