Alessandro MalacarnePT

Backend Developer

Refactoring, testing, performance and scale.

Specialised in APIs and CLIs in Rust and TypeScript

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Selected work

What was built, the decisions behind it and the results.

Maya

A commercial productivity manager: one core, four interfaces, no change without a test.

  • 7Rust crates
  • 1156tests
  • 95.3%coverage
  • Rust
  • Rocket
  • Diesel
  • SQLite
  • WebAssembly (Yew)
  • Tauri
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mido

A CLI that runs six checks and blocks the change until everything passes. Built for my workflow with AI agents.

  • 10.4klines of Rust
  • 349tests
  • 97.8%coverage
  • Rust
  • CLI
  • MCP
  • cargo-mutants
  • Nix
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irl

A serverless URL shortener designed for minimal latency: ~350 lines of production code, ~2× as much test code.

  • ~350lines of production code
  • ~2×lines of tests
  • 31tests (unit + E2E)
  • TypeScript
  • Nuxt / Nitro
  • AWS Lambda
  • DynamoDB
  • AWS CDK
  • Playwright
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RC Business

At RC Business, a training company: sites that sell — capture, integrations and live operations.

  • 14sites delivered
  • 100 → 420visitors (Acelerador)
  • 2/week → 2+/dayleads (Acelerador)
  • Builderall
  • HTML / CSS
  • MailingBoss
  • Kiwify
  • Facebook Pixel
  • mb_tag_matcher
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About

I start from the problem: requirements and constraints decide the technology, never the other way around. Robustness, to me, is not complexity — it is code that is easy to change.More about me →

Let's talk

Open to backend, infrastructure and tooling roles — remote or in Brazil.

devalesoficial@gmail.comGitHubLinkedIn