Level: Experienced

Job Field: IT, System, Embedded

Employment Type: Full Time

Contract Type: Permanent employment

Location: Graz

Working Model: Onsite

AI Summary

In this role, you develop firmware for ESP32 microcontrollers and enhance collaboration with hardware and Linux development teams. You implement high-quality, maintainable software features and conduct testing.

Job Technologies

Your role in the team

You are part of our core team working on the ESP32 microcontroller firmware (written in C++23 and newer), which is used in our charging systems and smart meters.
Close collaboration with our hardware development team to validate and implement new hardware designs.
Close collaboration with our Linux firmware team to offer similar features on products with ESP32 as on products with Linux.
Implementation of maintainable, reliable, and verifiable software.
Performance measurement, detection of regressions.
Code reviews, release creation, writing of changelogs for customers.
Implementing new features and interfaces.

This text has been machine translated. Show original

Our expectations of you

Qualifications

Ability to research problems and propose solid solutions.
Ability to act as a mentor and participate in knowledge transfer.
Excellent knowledge in memory-efficient C++ development, preferably including:
Avoidance of heap allocations by moving objects to the stack or by converting them into constexpr.
Improvement of performance by converting raw function pointers and virtual methods into C++ template arguments.
Asynchronous I/O.
(Secure!) Multithreading and atomic operations.
C Linux APIs such as fopen(), bind(), etc.
Knowledge of the esp-idf framework (we use the latest IDF master branch with many customer-specific improvements and no outdated compilers).
Good Linux debugging skills.
Knowledge of the Linux network protocol stack.
Basic knowledge of cryptography (for example, why the choice of a random IV is necessary in encrypted firmware update files).
Excellent German and English skills.

Experience

Experience in troubleshooting embedded systems down to the hardware level (UART, I2C, SPI, logic analyzer).
Experience with Linux shell scripting and command-line utilities (we have a complete CI/CD for all microcontroller projects and Sentry for customer crash reports).
Experience in implementing abstraction APIs/wrappers for lower-level library.
Experience with version control git, continuous integration with GitLab, project management methods (with Jira and Confluence).