Freelance IoT Software Engineer (all genders)
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Position Overview & Specifications
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 roleWe 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
- 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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Candidate Selection & Onboarding Process
Application & Resume Screening
Submit your tailored CV/Resume directly to the talent acquisition portal.
Technical & Competency Interviews
Virtual interviews with the hiring manager and multidisciplinary team.
Formal Offer & Benefits Negotiation
Written agreement outlining compensation, equity, retirement vesting, and relocation allowances.
Onboarding & Corporate Integration
Equipment provisioning, team orientation, and commencement of duties.
United States Work Authorization & Sponsorship Guide
Under United States immigration law (INA § 101(a)(15)(H)), foreign nationals seeking full-time professional positions typically navigate either non-immigrant specialty occupation classifications or immigrant visa sponsorship:
Requires a relevant Bachelor's degree or higher. Employers must file an approved Labor Condition Application (LCA) with the US Department of Labor confirming the prevailing wage rate.
Canadian and Mexican citizens qualify under USMCA (TN status). F-1 STEM graduates benefit from 36-month aggregate work authorization through E-Verify enrolled employers.
Candidate Preparation Blueprint: Technology
Based on transatlantic hiring benchmarks for Freelance IoT Software Engineer (all genders) roles across gropyus's corporate sector, successful applicants typically excel across three core dimensions:
Demonstrated portfolio evidence, architecture/system design case studies, or validated professional certifications directly applicable to Technology.
STAR method competency responses highlighting cross-functional leadership, conflict resolution, and delivering measurable enterprise ROI under tight timelines.
Total compensation expectation aligned within the benchmarked Salary Disclosed on Application bracket, including retirement vesting and health parity.
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