Lukas Seiler
Lead Principal Software Engineer at LiveKit
Hamburg, Germany
Summary
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RockstarLukas Seiler is a Lead Principal Software Engineer based in Hamburg with 11 years of experience building real-time, WebRTC-focused systems. He has risen through technical leadership at LiveKit, progressing from Technical Team Lead to his current principal role, where he shapes architecture and delivery for scalable media servers and SDKs. Lukas contributes hands-on across backend and client stacks—implementing room management, TURN/TLS integration, data-channel protocol enhancements, and client-side video constraint handling in the widely used LiveKit open-source project. He blends systems-level expertise in media servers with practical full-stack engineering, often touching low-level signaling and participation logic that few engineers combine. Known for pragmatic problem solving and clean protocol work, he thrives on turning complex real-time requirements into reliable production systems.
10 years of coding experience
3 years of employment as a software developer
Github Skills (14)
golang10
sfu10
typescript10
javascript10
media-services10
typescripts10
go10
webrtc10
protobuffer10
server10
protobuf10
typescript-types10
urn9
protocol-buffers8
Programming languages (17)
Github contributions (5)
livekit/client-sdk-js
Oct 2021 - Jan 2023
LiveKit browser client SDK (javascript)
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:15 releases, 656 reviews, 290 commits in 1 year 3 months
Contributions summary:Lukas contributed to the LiveKit browser client SDK, focusing on both front-end and back-end aspects. They implemented features related to room metadata handling and added support for constraints in video resolution options, indicating work on the client-side. Furthermore, they worked on integrating and modifying the SDK's protobuf definitions. The user also made changes to the core RTCEngine, updating logic for signaling and connection management.
livekitbrowserjavascriptwebrtcsdk
livekit/livekit
Nov 2021 - Dec 2022
End-to-end stack for WebRTC. SFU media server and SDKs.
Role in this project:Backend Developer
Backend DeveloperContributions:20 reviews, 3 commits, 19 PRs in 1 year 1 month
Contributions summary:Lukas primarily contributed to the backend of the LiveKit project, making significant changes to room management, TURN server configuration, and data stream handling. Their work involved implementing features such as tracking participant counts, integrating external TLS termination for TURN servers, and updating the protocol for enhanced data channel messaging. They also made modifications to participant handling and overall system logic, with a focus on WebRTC and media-server aspects of the project.
golangend-to-endsdkswebrtcvideo
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