Senior Linux Application Engineer (all genders) – Python & IoT Edge

Parking without barriers, tickets or queues. Wemolo builds its own hardware and its own AI to make that happen. More than 7,000 of our scanners run on around 4,000 parking sites across Europe and have processed over 1.3 billion parking events: unattended, outdoors, around the clock. As Senior Linux Application Engineer (all genders) in our IoT team, you build the software foundation for all our Linux-based devices, on ARM and x86. At its core is a platform layer that unifies shared components such as health monitoring and logging. Every device type then works the same way, and product features build on one solid base. The role combines architecture and hands-on engineering: clean, object-oriented software, plus ownership of how it is built, deployed, updated and monitored across the fleet. Your code sits close to the hardware but runs on top of Linux. Kernel development and microcontroller firmware are not part of the job. If well-designed software for Linux devices is your thing, you’ll feel at home here. As we are looking for a hands-on developer, a live coding session is an integral part of our interview process. What to expect • Unified platform layer: Design and build a platform layer that covers all our device types, both ARM and x86. It provides shared components such as health monitoring, logging, configuration, OTA updates and hardware abstraction. • Software architecture: Define clear interfaces between the platform and the applications on top of it. Consolidate the codebase so that new device types and components plug in easily. • Application development: Build Python services on top of the platform, inside our dockerized main application. • Device integration: Connect peripherals such as modems, watchdogs, cameras and AI accelerators through existing drivers, SDKs and Linux interfaces, behind a clean hardware abstraction. • Reliability and observability: Make our fleet secure, resilient and transparent through OTA updates, networking, inter-process communication and fleet-wide monitoring of device health. • Debugging: Analyze and solve complex issues at application and system level, such as memory leaks, network instability or service failures. • Ownership and mentoring: Take end-to-end responsibility, guide other engineers technically, and raise our engineering standards. Inspire us by • Senior software engineering experience: 5+ years of professional software development, with a strong part of it on Linux-based devices or edge systems. • Strong OOP skills: Deep experience with object-oriented design in (preferably) Python. Experience in another OOP language such as C++, Java or Rust is a plus. • Architecture know-how: You have designed and evolved software architectures, applied design patterns, and made trade-off decisions you can explain clearly. Ideally you have built a platform, framework or shared library that other teams or services build on. • IoT background: Hands-on experience building software for connected devices, ideally operated as a fleet in the field. • Linux user-space expertise: Solid knowledge of Linux, systemd, networking, IPC, Bash and Docker, ideally across different hardware architectures (ARM and x86). • Debugging skills: Experience troubleshooting system-level issues with tools such as GDB, tcpdump, Valgrind or profilers. • Engineering mindset: Degree in Computer Science or a related field, or equivalent practical experience. • Language skills: Fluent English (C1). Strong plus • Experience building, customizing and maintaining Linux images with Yocto. • Experience operating large-scale IoT fleets, including OTA updates and device monitoring • Familiarity with MQTT and Protocol Buffers (ProtoBuf) • Knowledge of industrial hardware, cameras, AI accelerators, modems or network devices • Experience with edge AI, computer vision or machine learning What we offer • Flexibility & Responsibility: Your workday, your performance – Our hybrid model empowers you to focus from home, get fresh perspectives during workation, and connect in person during our Anchor Days (Tuesday to Thursday) • Tailored Mobility: Full speed ahead – Whether it’s sustainable bike leasing or a public transport subsidy, we keep you flexible and on the move • Measurable goals: Our agile methods allow you to directly measure your impact on our product and company success • Team Culture & Networking: Real connections – also beyond the day-to-day. Celebrate successes with us at legendary team events and OKR parties • Productive Environment: Brainfood deluxe – Whether it's portafilter coffee, Bella&Bona online cafeteria, fresh fruit or our muesli bar – your wellbeing fuels your performance • Health & Balance: Stay in balance with EGYM Wellpass or Urban Sports Club – access 1,000+ gyms and wellness spots across Germany • Top Equipment & Ergonomics: Mac or Windows, in the office or remote – we make sure you’re set up for efficiency and comfort • Dress Code? Your Code: What you do matters more than what you wear – dress in whatever makes you feel your best Innovation through diversity Regardless of your background, origin, gender identity, or individual circumstances, it's your personality that interests us. That's why we're committed to building a culture of collaboration and respect, where every team member has a voice, can grow, and feels valued with us. Still here? Then we might be the perfect match! 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