Ernesto Lorenz
IT Specialist, Linux SME, OpenSource SW at Freelance | Self-Employed
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolErnesto Lorenz is an experienced IT and systems engineer based in Berlin, specializing in Linux/Unix, Identity and Access Management (MicroFocus/OpenText IDM/IGA), and telecommunications stack integration across 2G–4G networks. With 40+ years of professional engineering depth and 15 years of international field projects, he combines hands-on installation, troubleshooting and DBA skills with systems-level design for complex equipment like Nokia MSO HLR/HSS, One-AAA and Utimaco HSMs. He routinely bridges hardware, telecom protocols (SS7/SIGTRAN/DIAMETER) and software, delivering turnkey deployments, upgrades and acceptance testing for carriers and enterprise customers. Known for quick, creative problem-solving and persuasive technical communication, he favors object-oriented teamwork while thriving on novel challenges rather than routine tasks. Currently leading IAM consulting at OpenText and freelancing on open-source Linux projects, he recently returned to embedded MCUs—bringing decades of telecom and systems experience back to low-level engineering. Fluent in Spanish, English and German, he pairs broad multidisciplinary knowledge with a pragmatic, improvisational approach to getting systems into production.
8 years of coding experience
38 years of employment as a software developer
Dipl.-Ing. Aeronautical/Aerospace Engineering Technology/Technician, Dipl.-Ing. Aeronautical/Aerospace Engineering Technology/Technician at Technische Universität Berlin
Github Skills (66)
simavr9
gtkwave9
avr-gcc9
embedded8
simulator8
esp327
platformio7
esp82667
arduino7
atmega6
attiny6
linux6
network-connection6
script6
wifi6
Programming languages (7)
Github contributions (5)
seurat-atreides/BME280_Reader
Sep 2019 - Mar 2025
BME280 reader using an esp8266 (deepsleep mode) and uploading to Blynk
Contributions:6 PRs, 35 pushes, 5 branches in 5 years 7 months
blynkbme280deepspleepesp8266
seurat-atreides/bvg-sensor
Jan 2021 - Jul 2023
Contributions:2 releases, 2 PRs, 14 pushes in 2 years 6 months
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