Farzad 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
6 years of employment as a software developer
Python Programming, Computer Software Engineering, Certified, Python Programming, Computer Software Engineering, Certified at Duke University
Bachelor of Engineering (B.E.), Aerospace, Aeronautical and Astronautical Engineering, Bachelor of Engineering (B.E.), Aerospace, Aeronautical and Astronautical Engineering at Sharif University of Technology
Actor-based state management & orchestration for complex app logic.
Role in this project:
Full-stack Developer
Contributions:28 reviews, 24 commits, 16 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.
Contributions:113 commits, 44 PRs, 98 pushes in 1 year 9 months
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Farzad Yousefzadeh - Lead Software Engineer at Stately