Geoffrey Merck
Radio Network Planner at LS telcom
Greater Strasbourg Metropolitan Area France
Summary
👤
Senior🎓
Top SchoolGeoffrey Merck is a radio network planner and seasoned software engineer with 12 years of experience designing radio and monitoring systems at LS telcom. He blends hands-on embedded and backend development—contributing firmware and host-side audio processing for the popular MMDVM digital voice modem—with product ownership and team leadership across GIS, system monitoring, and spectrum projects. A pragmatic advocate of Agile and Lean, he has led migrations, architecture decisions, and automated monitoring implementations that bridge hardware, firmware and cloud-connected backends. Based in the Greater Strasbourg area, he pairs deep technical chops (C/C++, signal processing, de/emphasis and CTCSS work) with practical project delivery and stakeholder management. Notably, his open-source contributions show a focus on real-time audio processing and robust serial/network handling, reflecting an engineer who ships low-level reliability and operational resilience.
12 years of coding experience
14 years of employment as a software developer
Baccalauréat Scientifique, Physique / Chimie, Baccalauréat Scientifique, Physique / Chimie at Lycée StanislasBTS, Informatique Industrielle, BTS, Informatique Industrielle at Lycée Alphonse Heinrich
English, French, German
Stackoverflow
41reputation
14kreached
1answer
0questions
Github Skills (13)
firmware10
embedded10
filtering10
audio-processing10
c-language10
cprogramming-language10
filter10
sys10
signal-processing10
digital-signal-processing10
network-programming9
boost6
stacktrace6
Programming languages (10)
Github contributions (5)
g4klx/MMDVM
Dec 2017 - May 2021
The firmware for the MMDVM (Multi-Mode Digital Voice Modem)
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:169 commits, 51 PRs, 4 comments in 3 years 5 months
Contributions summary:Geoffrey contributed to the development of firmware for the MMDVM (Multi-Mode Digital Voice Modem), adding functionality such as a Goertzel algorithm implementation and a CTCSS decoder. They made changes to headers, cpp files, and configuration files to add support for these features. The user also integrated de and pre emphasis filters and made adjustments to the serial port communication.
multi-modefirmwaredigital-voicevoicemodem
g4klx/MMDVMHost
Apr 2020 - May 2021
The host program for the MMDVM
Role in this project:Back-end Developer
Back-end DeveloperContributions:89 commits, 21 PRs, 2 comments in 1 year 1 month
Contributions summary:Geoffrey primarily contributed to the FMControl module, implementing functionalities related to FM audio processing. They refactored the code to pack and unpack data using shifting and masking, and they integrated pre-emphasis, de-emphasis, and CTCSS removal filters. Additionally, the user addressed buffer management and ensured the proper handling of network communications, including EOT and poll messages within the FM Network.
hdmimmdvmcnc-controllerhost
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