Sr. Embedded Wireless Modem Engineer

About the role

We are looking for a Senior Embedded Wireless Modem Engineer to take ownership of the systems that keep our drones connected, coordinated, and performing flawlessly in the sky. This is not a narrow, siloed role—you’ll be working across the full stack of wireless communication: from PHY-layer protocol design and signal processing to embedded integration, RF optimization, and real-world validation. Your work will directly impact how hundreds (or thousands) of drones communicate reliably in complex, high-stakes environments. You’ll be hands-on with everything from modem development and firmware to lab testing and live field deployments—solving tough problems around interference, synchronization, range, and reliability. You’ll also play a key role in getting our systems certified and production-ready, working closely with external labs and internal hardware/software teams.

Responsibilities

• Owning the design, development, and optimization of radio modems across sub-GHz (868/915 MHz) and 2.4 GHz ISM bands
• Building robust wireless communication systems using modern RF transceivers (e.g., AT86RF215 and similar)
• Developing and optimizing PHY-layer protocols, including modulation, synchronization, and timing
• Designing signal processing algorithms (filtering, timing recovery, detection) for reliable communication
• Implementing channel coding, error correction, and spread spectrum techniques (FHSS, DSSS)
• Driving system-level RF performance through link budget, coexistence, and optimization analysis
• Integrating RF systems with embedded platforms (MCUs) and developing low-level drivers/firmware (C/C++)
• Debugging and optimizing hardware–firmware interactions in close collaboration with electronics teams
• Running lab and field testing to validate RF performance in real-world conditions
• Leading radio certification efforts (CE, FCC, RED, ETSI), including test planning and execution
• Partnering with external EMC labs and resolving compliance issues through certification cycles
• Supporting system validation and large-scale deployment testing

Requirements

• Degree in Electrical Engineering, Communications Engineering, or a related field
• Proven experience developing radio modems in ISM bands (sub-GHz and/or 2.4 GHz; LoRa, ZigBee, etc.)
• Hands-on experience with RF transceivers (e.g., AT86RF215, TI CC13xx/CC26xx, or similar)
• Strong foundation in digital communication systems (modulation, FEC, synchronization, signal detection)
• Experience with spread spectrum techniques, particularly FHSS
• Solid embedded systems experience (C/C++), including low-level driver and firmware development
• Experience integrating RF ICs with microcontrollers (e.g., STM32 or similar)
• Proficiency with RF measurement tools (spectrum analyzer, VNA, signal generators, oscilloscopes)
• Working knowledge of EMC/EMI principles and RF compliance requirements
• Experience with radio certification (CE, FCC, ETSI) and working with external test labs
• Familiarity with wireless protocols (e.g., proprietary PHYs, IEEE 802.15.4)
• Knowledge of PCB design and RF layout best practices
• Strong problem-solving skills with a structured, independent working style
• Based in the Munich area and willing to work on-site in Gilching

What defines you

• Highly reliable, organized, and execution-focused
• Calm under pressure and effective in an onsite operating environment
• A clear, proactive communicator who escalates issues early and appropriately
• You don’t need to be the “owner of everything” to be high-impact; you like owning your lane and making the overall machine run smoother
• You take pride in making complicated work feel simple for the team around you
• Team-oriented, humble, and eager to learn
• Interested in growing into increased production ownership over time

Benefits

• A fun, creative, and highly effective team with a start-up spirit
• Exciting projects where mechanics, electronics, firmware, and software meet storytelling and arts
• Real responsibility with no daily micro-management — trust and freedom to do your best work
• Space to try new things, learn, and grow with us
• Short decision-making paths, open communication, and strong team spirit