Zoltan Janosy
Embedded Software Engineer at Fishman Transducers
Budapest, Hungary
Summary
🤩
Rockstar🎓
Top SchoolZoltan Janosy is an embedded software engineer with over two decades of experience designing firmware for microcontrollers and DSPs, with deep expertise in digital audio, MIDI, USB audio/MIDI stacks and Bluetooth LE for musical instruments and pro-audio products. He has shipped commercial products for brands like AKAI, Tascam and Fishman, building everything from bootloaders and flash file systems to GUI layers (including LVGL drivers) and MIDI-over-BLE interfaces while optimizing for BOM cost, performance and memory footprint. Comfortable both as an autonomous contributor and a team player, he codes in C/C++ and assembly across platforms such as Blackfin, ARM Cortex-M, PIC and ESP32-S3. His work on LVGL display drivers and size-reduction options demonstrates a knack for squeezing rich UIs into constrained embedded targets. With a PhD-level engineering background and a long personal focus on sound synthesis and physical modeling, he blends rigorous research foundations with practical product delivery—and music remains a driving passion behind his engineering choices.
4 years of coding experience
29 years of employment as a software developer
Lovassy László GimnáziumPh. D. Electrical Engineering, Ph. D. Electrical Engineering at Budapest University of Technology and Economics
Hungarian, English, German
Github Skills (14)
c1710
embedded10
mcu10
device-driver10
windows-gui10
driver10
spi10
c1110
microcontroller10
graphic10
lvgl10
il9
dma8
freertos7
Programming languages (3)
Github contributions (5)
lvgl/lvgl
Aug 2023 - Nov 2024
Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:42 reviews, 9 PRs, 63 comments in 1 year 3 months
Contributions summary:Zoltan contributed significantly to display driver implementations for the LVGL embedded graphics library. Their work included adding support for various LCD controllers (ST7735, ST7789, ST7796, ILI9341), implementing an observer pattern for UI elements, and integrating advanced drawing features such as radial gradients. They also created documentation, including a step-by-step guide with example code for STM32 devices, and added a configuration option to reduce code size.
ui-editoraffordablempuprofessionalgraphics-library
zjanosy/lvgl
Aug 2023 - Feb 2025
Embedded graphics library to create beautiful UIs for any MCU, MPU and display type. It's boosted by a professional yet affordable drag and drop UI editor, called SquareLine Studio.
Contributions:112 pushes, 9 branches, 6 tags in 1 year 6 months
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