Backend Engineer
Senior Software Developer Embedded Linux Systems (f/m/d)
Berlin
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Your responsibilities
- You design and develop embedded software for FRITZ!OS.
- You translate complex requirements into modular architectures and robust, maintainable software.
- You take ownership of enhancements, adaptations and performance optimizations for the Linux kernel and drivers.
- You develop software for specialized SoCs with integrated hardware-offloading components for networking functions.
- You develop analysis and testing strategies to optimize FRITZ!OS, focusing on areas such as measurability, reproducibility and regression testing.
- You design, implement and maintain complex, cross-system software components – from the kernel to the application layer.
Your profile
- Several years of experience in the Embedded Linux kernel space within product development or production environments.
- Excellent C skills in low-level, hardware-oriented systems programming, knowledge of Python and, ideally, Rust.
- Hands-on networking and data-path experience, including a solid understanding of Ethernet and TCP/IP, as well as experience debugging QoS, throughput, latency and packet-loss issues.
- Proven experience with the Linux kernel and drivers, including kernel analysis and debugging, modifications and backports, Device Tree, kernel configuration and the network stack.
- Deep knowledge of the SoC-level stack, including ARM cores, DMA, interrupt handling, MMUs and memory layouts, as well as experience with real-time systems and system-level memory and performance optimization.
- Experience with hardware-accelerated networking and network offloading.
- Confident use of Git and practical experience with established code-review processes.
- Native-level English or English proficiency at C1 level or above; knowledge of German is a plus.
What You Can Look Forward To
[ul][li]30 days of annual leave, plus Christmas Eve and New Year’s Eve off [li]Financial participation in the company’s success through bonus payments [li]A €44 contribution towards your Deutschlandticket [li]Sustainable mobility with our bicycle-leasing offer through JobRad [li]Urban Sports Club membership [li]An employer contribution of €27 per month towards capital-forming savings benefits [li]A meal allowance of up to €20 per week for Foodji [li]A varied and complimentary breakfast selection [li]Access to the Corporate Benefits programme [li]Opportunities for workations, sabbaticals and job sharing [li]Paid partner leave following the birth of a child [li]Individual professional development opportunities and an open culture of learning from one another, for example during our Developer Coffee Breaks [li]Unique team events, including barbecues, our Christmas party and the big FRITZ! Summer Festival, to which your family is also invited [/li][/ul] [b]At FRITZ!, we value diversity and equal opportunities because we believe that different perspectives and experiences are essential to our success. We are committed to creating a working environment in which everyone feels equally welcome and can reach their full potential – regardless of gender, nationality, religion, ethnic or social background, disability, age, sexual orientation or gender identity.[/b]
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