Freelance IoT Software Engineer (all genders)

About the role 

We are looking for a Senior Software Engineer freelancer to support GROPYUS on a 10-month project focused on our Smart Living and Smart Building technology stack. 

• Improve zero-touch provisioning [Kotlin, Spring Boot, Linux, BLE / Bluetooth Mesh] 


• Enhance monitoring capabilities [BLE / Bluetooth Mesh, Grafana, Prometheus, OTel Collector, Spring Boot] 


• Build a Proof of Concept for the new BOS Architecture based on the defined functional requirements 

The project is open to freelancers based anywhere in the EU, with an expected availability of 30–40 hours per week. 

What you will be doing 

• Build and configure Linux-based IoT and edge systems for smart homes and smart buildings 


• Develop device-to-cloud communication pipelines for telemetry, control, and automation 


• Work on edge computing components running on embedded Linux systems 


• Implement and support device lifecycle management: provisioning, configuration, monitoring, and OTA updates 


• Build internal tools and automation for IoT fleet operations and diagnostics 


• Ensure system reliability, security, and observability across edge and cloud layers 


• Collaborate closely with Product, Hardware, Platform, and Software teams 

About you 

• Strong experience with Linux-based systems in production environments 


• Knowledge of IoT connectivity technologies (BLE, LoRaWAN, WMBus) 


• Hands-on experience with IoT protocols such as MQTT,  


• Hands-on experience with embedded systems or edge computing 


• Solid understanding of distributed and event-driven architectures 


• Proficiency in Kotlin 


• Experience with containers, cloud platforms, and infrastructure components (e.g. PostgreSQL, Redis, message brokers, K8s clusters) 


• Experience with telemetry, streaming data, and time‑series data 


• A collaborative mindset and willingness to take ownership 

Nice to have 

• Experience with embedded Linux, OTA systems, or secure device identity 


• Knowledge of observability and monitoring across edge and cloud systems