Edge Development: Design, develop and maintain ultra-low-power firmware in C/C++ for STM32 devices (LoRaWAN / NB-IoT).
Telemetry Pipeline: Build and optimize the data ingestion layer written in Go, ensuring reliable delivery of data from the edge to the cloud and preserving data integrity within our TimescaleDB time-series database.
System Integration: Own and manage the downstream communication flow, enabling the main application to configure and control deployed devices.
Cloud Backend: Improve and maintain the TypeScript backend to reliably serve data to frontend applications and REST API consumers.
End-to-End Architecture: Collaborate on designing the full data contract, including payload serialization, security, and storage efficiency.
Troubleshooting: Debug complex issues across layers, from hardware signal noise to cloud-side database latency.

Requirements

Master’s degree in micro-engineering, electrical engineering, computer science, or a related field
More than 5 years of experience in embedded systems, with a proven track record of delivering projects
Strong skills in C/C++ and extensive experience with STM32
Experience with LoRaWAN and/or NB-IoT
Practical experience or high proficiency in Go for telemetry and high-concurrency services
Good understanding of TypeScript and modern backend architectures
Experience with time-series databases (ideally TimescaleDB or InfluxDB) and SQL
Full-stack mindset: understanding of optimizing data payloads for low-bandwidth networks (e.g., Protocol Buffers, JSON optimization)
Tools & infrastructure: STM32CubeIDE, Git, Docker
Familiarity with cloud infrastructure (Node.js, AWS)
Fluent in English and French. German or other languages are a plus
Swiss resident or valid Swiss work permit
Ability to work on-site in Puidoux (CH) most of the time

Benefits

Dynamic work environment with strong opportunities for professional development and career growth
Permanent contract (CDI)
Employment rate: 80–100%
Start date: April 1, 2023 (flexible if needed)
Working hours: 40 hours per week
Vacation: 25 days per year, plus 5 additional days after 2 years of service
Enhanced occupational pension plan (LLP)
Flexible working hours
Telework / remote work possible
Entitlement to one week of workation per year
Participation in Droople’s incentive plan

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

CC++STM32LoRaWANNB-IoTGoTypeScriptSQLtime-series databasesProtocol Buffers

Soft Skills

troubleshootingcollaborationcommunication

Certifications

Master’s degree in micro-engineeringMaster’s degree in electrical engineeringMaster’s degree in computer science