IoT Application Engineer – Embedded C++ & BLE (m/w/d)

Responsibilities Develop and maintain C/C++ applications and services for embedded Linux gateways. Implement cloud-to-device communication and gateway application logic. Integrate Bluetooth controller interfaces and third-party access point platforms. Analyze runtime, performance and communication issues. Verify BLE host-controller and end-device communication. Develop automated tests for application and system integration. Improve software quality, security, reliability and maintainability. Support cross-platform builds, releases and partner integration. Evaluate product maturity through alpha, beta and system-level testing. Troubleshoot laboratory findings and customer-reported application or communication issues. Support test automation, regression coverage and verification environment stability. Document interfaces, technical decisions, known limitations and troubleshooting findings. Identify technical risks, propose countermeasures and communicate status and dependencies. Support BLE/RF coexistence and performance analysis with domain experts when required. Education Degree in computer science, electrical engineering or equivalent experience. Experience At least 3 years of relevant C/C++ application development in embedded, IoT or comparable product-oriented R&D. Gateway, BLE and access point experience is beneficial; deep BLE specialization is not required from day one. Strong hands-on experience in C/C++ application development. Experience with embedded Linux and debugging on target hardware. Experience with cross-compilation, SDKs, version control and testing. Python, BLE analysis tools and Bluetooth Core Specification knowledge are advantages. Fluent English. Skills/Abilities Knowledge of Linux processes, threads, IPC and networking. Understanding of IoT gateway architectures and end-to-end communication. Practical BLE knowledge and willingness to deepen gateway and controller expertise. Strong technical understanding and analytical problem-solving skills. Ownership mindset with high standards for code quality, reliability and maintainability. Ability to model complex solutions and explain technical findings clearly. Pragmatic, structured approach to improving established systems. Collaborative communication with internal teams and external partners. Curiosity and willingness to expand knowledge of BLE, IoT and embedded technologies. We innovate. We help communities thrive. VusionGroup has an international presence in 19 countries. In joining us, you’ll be part of a globally distributed team of intellectually curious, committed, and collaborative co-workers. The work is fast paced, challenging, and ambitious. Here, you will feel valued for your contributions as we reinvent modern commerce—together. We feel supported. You will too. VusionGroup is a place where people feel safe, happy, and respected. We offer programs and benefits to support you in whatever comes next in your life, including: Pay : Competitive pay Schedule : A flexible, hybrid work schedule Career Growth : E-learning opportunities and workshops, and global mobility potential 🎒 Company merch and presents 💻 Notebook (can also be used privately) 🚏 Good public transport connections w/ financial support ⏲️ Flexible working hours 🏡 Home Office 🩳 No dresscode / casual style 💸 No All-In contract ⛹️ Team Events 🚤 Beautiful Mur in walking distance ♿️ Accessibility 🚲 Bicycle parking 🍽️ Canteen with different meals and financial assistance 🥙 Nearby kebab 🥝 Fresh fruits ☕️ Coffee, tea, water, … 🔌 Electric charging station 🧳 Airport Graz nearby 🗺️ Multiculturality – Hanging out with colleagues from all around the world #LI-HYBRID Not the right opportunity for you? Share this job with a friend or search all careers at . A minimum basic salary of EUR 3.954 gross per month for full-time employment applies to the advertised position with a willingness to pay depending on the actual qualifications. Are you ready to develop the future of retail? As the world’s leader in IoT and data technologies for commerce, our mission is to help retailers and brands use digitalization to become more efficient, more intelligent, and more sustainable—and in doing so, enable more positive commerce. VusionGroup is a fast-growing, fast-paced retail tech company. We believe that by thinking big and working together as one team—agile thinkers, tech makers, and change agents—we can build the largest retail IoT platform in the world.