Freelance IoT Software Engineer (all genders)

Gropyus•Technology

Berlin, BerlinFull-timeOn sitelast month

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📄Stellenbeschreibung

About The Company

GROPYUS is a technology-based construction company focused on building multi-story residential buildings.

Thanks to its prefabricated building system with various design options, industrial offsite construction, and fully digitalized processes, the company manufactures aspirational, sustainable, and affordable homes using timber construction methods.

GROPYUS is using scalable construction and manufacturing solutions to tap into a future market, boost Europe's strength in innovation, while also playing a substantial role in improving sustainability.

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

Join us on our mission to design buildings as continuously evolving products to create the most exciting and affordable experience for all. We build for people and conserve the resources of our planet.

We can't wait to get to know you.

For more information, visit our website .

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