erovel.li

Evan RovelliSoftware engineer

I’m a computer engineer by training and a software engineer by trade, based in Cambridge, Massachusetts. At Fidelity I work on batch platforms and billing systems. On my own time I build local-first tools in Rust, mostly things I wanted to exist and couldn’t find.

Currently

Working
Full-stack engineering at Fidelity, mostly batch platforms and billing systems.
Building
Local-first tools in Rust, including tidyup and Outdegree.
Thinking about
Failure modes, legible pipelines, and software that keeps data on-device.

Projects

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2026Pre-alpha

tidyup

A local-first file organizer that never phones home. On-device embeddings propose a tidy directory tree, and nothing moves without approval.

  • Rust
  • ONNX Runtime
  • SQLite
  • Tokio
  • Dioxus

2026In progress

C.H.O.M.P

Claims History of Oral Healthcare Medicaid Procedures maps US Medicaid dental claims from 2018 to 2024 in an interactive choropleth.

  • TypeScript
  • React
  • MapLibre GL
  • DuckDB

2026Published

Outdegree

A Chrome extension that records browsing as a directed graph you can explore over time, with a Rust and WebAssembly core and no network egress.

  • Rust
  • WebAssembly
  • Chrome MV3
  • IndexedDB

2026Ongoing

Utils

Small browser utilities compiled from Rust to WebAssembly, so the work happens on your own machine instead of on someone else's server.

  • Rust
  • WebAssembly
  • Web APIs

2024Completed

ModuLoop

A hardware music sequencer built by four of us for senior design at UMass Amherst. I led the software architecture, on a Teensy 4.1.

  • C++
  • Teensy 4.1
  • Embedded audio
  • QSPI PSRAM