IoT Systems & Embedded Engineer (End-to-End) 80-100%

Droople is a Swiss IoT startup founded in 2018 that has the ambition to make the world aware that water is our shared source of life. Droople’s Water Intelligence Platform enables businesses to get the necessary insights and tools to change the way they use water to ensure a sustainable future for humanity.

Droople provides IoT enterprise solutions in the field of water treatment systems, sanitary ware, and appliances as well as standard products for individual applications.

We are seeking a polyvalent IoT Systems Engineer who bridges the gap between the physical world and the cloud. You will not just write firmware; you will own the data journey from the sensor edge, through the telemetry pipeline, to the cloud backend. If you enjoy the challenge of building a cohesive ecosystem where hardware and software are perfectly synced, we want you.

Edge Development: Design, develop, and maintain ultra-low-power C/C++ firmware for STM32 devices (LoRaWAN / NB-IoT).

Telemetry Pipeline: Build and optimize the data ingestion layer written in Go, ensuring reliable delivery of edge data to the cloud and maintaining data integrity within our TimescaleDB time-series database.

System Integration: Own and manage the downlink communication flow, enabling the main application to configure and control deployed devices.

Cloud Backend: Enhance and maintain the TypeScript backend to reliably serve data to frontend applications and REST API consumers.

End-to-End Architecture: Collaborate on the design of the full data contract, including payload serialization, security, and storage efficiency.

Troubleshooting: Debug complex, cross-stack issues ranging from hardware signal noise to cloud-side database latency.

• Master’s degree in Micro-engineering, Electrical Engineering, Computer Science, or a related field.
• 5+ years of experience in embedded systems, with a proven track record of moving up the stack.

Firmware core:

• Strong C/C++ skills and deep experience with STM32
• Experience with LoRaWAN and/or NB-IoT

Backend & systems:

• Practical experience or high proficiency in Go for telemetry and high-concurrency services
• Solid understanding of TypeScript and modern backend architectures
• Experience with time-series databases (ideally TimescaleDB or InfluxDB) and SQL

Full-stack mindset:

• Understanding of how to optimize data payloads for low-bandwidth networks (e.g. Protocol Buffers, JSON optimization)

Tools & infrastructure:

• STM32CubeIDE, Git, Docker
• Familiarity with cloud infrastructure (Node.js, AWS)

Languages:

• Fluent in English and French
• German or other languages are a plus

Eligibility:

• Swiss resident or valid Swiss work permit
• Ability to work on-site in Puidoux (CH) most of the time

• A dynamic working environment with strong opportunities for professional and career development
• Contract type: Permanent contract (CDI)
• Employment rate: 80–100%
• Starting date: April 1st, 2023 (to be adjusted if needed)
• Working hours (100%): 40 hours per week
• Holidays: 25 days per year, plus 5 additional days after 2 years of service
• Enhanced LLP (occupational pension plan)
• Flexible working hours
• Telework / remote work possible
• Right to one week of workation per year
• Participation in Droople’s incentive plan