John Feras
Freelance Software Engineer at Feras Information Technologies
North Wales, Pennsylvania, United States
Summary
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SeniorJohn Feras is a freelance software engineer with roughly two decades of hands-on experience spanning mobile apps, video streaming, embedded microcontroller systems, and blockchain. He has built production Android and iOS apps and libraries, implemented DRM and high-performance video delivery systems for major cable infrastructure, and developed microcontroller-based medical device prototypes using ST Microsystems frameworks. Equally comfortable in high-level languages (JavaScript/TypeScript, Python, Crystal) and low-level C/C++, he has contributed to blockchain projects (Umbra, SushiChain) and optimized consensus and privacy protocols for production readiness. His work blends practical product delivery—shipping apps like ScopeSpeaker and Social Talker—with deep systems expertise in video codecs, DRM, and real-time network performance tuning. Based in North Wales, PA, he continually explores new trends and is migrating mobile clients to Flutter while leveraging Crystal server components for C-like execution speed.
8 years of coding experience
28 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (68)
solidity9
smart-contracts9
blockchain9
ethereum9
react9
depth9
dao8
aragon8
checkout8
governance8
react-native-voice8
microphone8
forge8
privacy8
indexing8
Programming languages (11)
Github contributions (5)
jferas/WebScopeSpeaker
Aug 2017 - Dec 2017
Contributions:96 commits, 3 pushes, 1 branch in 3 months
uniswapfoundation/franchiser
Aug 2024 - Sep 2024
Contributions:34 reviews, 12 PRs, 46 pushes in 1 month
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