Raphael Coeffic
Director Software Development at Non-Profit / OSI
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolRaphael Coeffic is a Director of Software Development based in Berlin with 23 years of experience spanning embedded systems, telecoms and VoIP platforms. He leads development of the ABC SBC architecture at FRAFOS while maintaining deep hands-on expertise in flight-controller and radio firmware—contributions to high-profile open-source projects like Betaflight, EdgeTX and OpenTX show practical mastery of telemetry, SBUS and VTX subsystems. Earlier roles as a VoIP solution architect at Oracle and software architect at Tekelec reflect strong system-design and protocol experience, including voicemail and SIP server enhancements. He founded and co-leads the SEMS open-source SIP project, combining community engagement with long-term maintenance responsibilities. Raphael pairs formal computer-science training from TU Berlin and Tübingen with a knack for refactoring legacy embedded code and adding robust error handling and telemetry bridges. Colleagues describe him as a pragmatist who moves seamlessly between low-level firmware fixes and strategic architecture for carrier-grade systems.
23 years of coding experience
13 years of employment as a software developer
Master of Science Compter Science, Master of Science Compter Science at Universität TübingenLicenses Computer Science, Licenses Computer Science at université de Franche-ComtéDiplom Computer Science, Diplom Computer Science at Technische Universität Berlin
French, German, English
Stackoverflow
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0reached
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Github Skills (23)
c-language10
game-controller10
kamailio10
controller10
telephony10
preflight10
firmware10
beta-release10
msp10
c1110
voip10
sip10
c1710
lua10
sips10
Programming languages (14)
Github contributions (5)
EdgeTX/edgetx
Oct 2019 - Jan 2023
EdgeTX is the cutting edge open source firmware for your R/C radio
Role in this project:
Embedded Systems Engineer
Embedded Systems EngineerContributions:7 releases, 445 reviews, 1910 commits in 3 years 3 months
Contributions summary:Raphael contributed significantly to the EdgeTX firmware, focusing on implementing features and fixes within the radio firmware's code base. Their work included adding support for new functionalities like integrating empty spaces within attribute names and supporting double quotes, enabling double quotes for file names and model names within the YaML files, and adding support for various internal module configurations. They also addressed issues in parsing and managing channel configuration, improved code in the bootloader and tested the conversion of data, highlighting their involvement in the firmware's internal workings and user interface.
firmwarercradiofpv-racing
betaflight/betaflight-tx-lua-scripts
Jan 2017 - Oct 2019
Collection of scripts to configure Betaflight from your TX (currently only supported in OpenTx)
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:3 releases, 1 review, 39 commits in 2 years 9 months
Contributions summary:Raphael primarily contributed to the development of Lua scripts for configuring Betaflight on a Taranis/Horus transmitter. They added support for Horus, including initial script implementations and layout adjustments. The contributions extended to include VTX (Video Transmitter) setup, including the addition of VTX configuration options to the script, and also refactored the scripts to create a new file structure.
opentxlua-scriptbetaflighttaranisfrsky
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