Felipe Armoni
Staff Software Engineer at Banner Technologies
São Paulo, Brazil
Summary
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Rockstar🎓
Top SchoolFelipe Armoni is a Staff Software Engineer and startup veteran in São Paulo with nine years of experience driving product and engineering outcomes that led to multiple acquisitions. He blends systems-level expertise in Rust and TypeScript with product instincts—building everything from AI chatbots and hierarchical custom table systems to a formula language (Dala) and secure Electron video players. A prolific open-source contributor, Felipe has fixed core compiler and bundler issues and added features to projects like the TypeScript compiler, SWC, Nova JS engine and the popular DefinitelyTyped repository, demonstrating deep familiarity with language tooling. He’s shipped developer tooling at scale (rewriting Liblab’s SDK generator and creating multi-language generators) while mentoring teams and optimizing architectures for performance and cost. Notably, his work often sits at the intersection of developer productivity and end-user value: rethinking SDK pipelines, optional chaining behavior in compilers, and plugin hooks for Rust bundlers to make ecosystems more extensible.
9 years of coding experience
12 years of employment as a software developer
Post Graduation Business Administration and Management General, Post Graduation Business Administration and Management General at FGV - Fundação Getulio VargasGraduation Electrical Engineering with Minor in Telecommunications, Graduation Electrical Engineering with Minor in Telecommunications at USP - Universidade de São Paulo
English, Spanish, French, Chinese, Portuguese
Stackoverflow
6,881reputation
729kreached
61answers
86questions
graphql
top-5%
spring-boot
top-5%
unit-testing
top-5%
jwt
top-5%
Github Skills (26)
javascript10
typesc10
plugin-development10
typescript10
typescript-definitions10
type-definition10
type-system10
bundler10
typescript-types10
typescripts10
rust10
webrtc10
api-design9
unit-testing9
spring-boot9
Programming languages (11)
Github contributions (5)
rolldown/rolldown
Jun 2024 - Aug 2024
Fast Rust bundler for JavaScript/TypeScript with Rollup-compatible API.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 6 PRs, 8 comments in 1 month
Contributions summary:Felipe implemented new features related to plugin integration within the rolldown bundler. Their contributions include adding support for banner, footer, intro, and outro hooks, allowing plugins to modify the output chunks. The changes involved modifications to the `rolldown_plugin` crate, the binding options, and test configurations. The user's work enables greater customization and extensibility of the bundler through plugin mechanisms.
bundlerjavascripttypescript
DefinitelyTyped/DefinitelyTyped
Sep 2022 - Sep 2022
The repository for high quality TypeScript type definitions.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:5 commits, 5 PRs, 7 comments in 3 days
Contributions summary:Felipe primarily focused on updating TypeScript type definitions to support newer versions (4.9) of the language, including adapting existing type definitions for various WebRTC and credential management features. They updated existing tests and fixed code based on the updated types. The user also re-integrated support for older TypeScript versions, ensuring backward compatibility for the project.
typescript-definitionstype-definitionshigh-qualitydtsdefinitions
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