Mark Roberts
Software Engineer at Vercel
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolMark Roberts is a software engineer and technical leader with 15 years of experience building developer-focused APIs and real-time systems, currently working at Vercel after co-founding Propel Data Cloud where he built GraphQL and ClickHouse-backed analytics tooling. He led design and implementation of Twilio’s Super SIM and Programmable Video products, shipping REST APIs, real-time event streams, and SDK-level WebRTC work across browser quirks. Comfortable across Java, Scala, Kafka, and modern JS stacks, he combines systems-level thinking with a product mindset for developer experiences. An active open-source contributor, his work on node-webrtc and SIP.js improved WebRTC bindings, data channel handling, and SIP keep-alive behavior—helping bridge browser implementations and server tooling. Based in Berlin with a BA in Computer Science from the University of Chicago, he pairs hands-on engineering with startup grit and a knack for making complex distributed systems easy for other developers to use.
15 years of coding experience
15 years of employment as a software developer
New Genres, New Genres at San Francisco Art InstituteBachelor of Arts - BA Computer Science, Bachelor of Arts - BA Computer Science at University of Chicago
Stackoverflow
41reputation
2kreached
0answers
1question
Github Skills (14)
nodejs10
javascript10
sips10
webrtc10
sip10
cprogramming-language9
voip9
c-language9
typescripts8
typescript8
typescript-types8
algorithm6
functional-programming6
tetris6
Programming languages (22)
Github contributions (5)
node-webrtc/node-webrtc
Mar 2014 - Jan 2021
node-webrtc is a Node.js Native Addon that provides bindings to WebRTC M87
Role in this project:
Back-end Developer
Back-end DeveloperContributions:30 releases, 2 reviews, 548 commits in 6 years 11 months
Contributions summary:Mark focused on adding and improving WebRTC features to the Node.js native addon, "node-webrtc." Their work included adding support for getStats, adding braces to code, and enhancing the codebase to handle different OS X compatibility issues. They also made improvements to the handling of RTCDataChannel and enhanced test coverage.
node-jsn-apiwebrtcjs-nativenodejs
onsip/SIP.js
Jun 2015 - Jun 2016
A simple, intuitive, and powerful JavaScript signaling library
Role in this project:Back-end Developer
Back-end DeveloperContributions:16 commits, 13 PRs, 37 comments in 11 months
Contributions summary:Mark significantly contributed to the `onsip/sip.js` repository by implementing new features related to keep-alive functionality. They added configuration options, methods for sending and managing keep-alives within the Transport and UA classes, and refactored the code to emit "notify" events from Session. Furthermore, the user whitelisted supported option tags and made adjustments to allow additional Supported option tags. These changes demonstrate the user's expertise in enhancing the library's functionality and handling SIP messages.
javascriptwebrtcintuitivesipvoip
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