Farzad Yousefzadeh
Helsinki, Mainland Finland
Summary
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RockstarFarzad Yousefzadeh is a Lead Software Engineer based in Helsinki with 11 years of experience building full-stack web and UI platforms, currently advancing application modeling tooling with state machines and statecharts at Stately. He blends deep frontend expertise in React/Redux and Typescript with platform-level responsibilities—architecture, tooling, and developer productivity—from his time leading web engineering at Epic Games. A committed open-source contributor, he has improved React integrations in the popular xstate library, enhancing hooks like useInterpret and developer ergonomics. Farzad’s background includes redesigning legacy systems, driving migrations, and improving CI and performance that measurably increased user engagement and operational efficiency. Comfortable across cloud, mobile, and serverless stacks, he pairs hands-on coding with mentoring and public speaking to elevate teams. Trained in aerospace engineering and certified in Python from Duke, he brings a systems-thinking mindset to complex application problems.
11 years of coding experience
Stackoverflow
2,509reputation
562kreached
97answers
5questions
css
top-5%
jquery
top-5%
iframe
top-5%
javascript
top-5%
html
top-5%
Github Skills (23)
javascript10
jes10
typescript10
jestjs10
state-machine10
typescript-types10
jtest10
state-management10
typescripts10
react10
jquery9
css9
finite-state-automata9
iframe9
finite-automata9
Programming languages (20)
Github contributions (5)
statelyai/xstate
Apr 2019 - Nov 2022
State machines, statecharts, and actors for complex logic
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:32 reviews, 24 commits, 18 PRs in 3 years 7 months
Contributions summary:Farzad made several contributions to the `xstate` repository, primarily focused on enhancing the React integration aspects of the library. They implemented and tested functionalities related to `useInterpret` and `createActorContext` hooks. The user added tests to verify the correct behavior of the hooks and addressed issues related to machine references and interpreter options, improving the overall developer experience with the library.
state-machinestatechartinterpretervisualizerscxml
farskid/abstract-volume-manager
Apr 2019 - Apr 2020
Abstract video player modeling using statecharts in React, React Native, Vue, Elm and Command line.
Contributions:8 commits, 6 PRs, 7 pushes in 11 months
command-lineelmreactreact-nativevideo-player
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