Signal Processing Engineer (Radio)

Harmattan Ai

Paris, France

Who this role is best for

Geared toward mid-level engineers with advanced degrees in signal processing or applied mathematics, comfortable with waveform design and anti-jamming logic.

Best fit for

Mid-level engineers with 8-12 years of communication system design experience and a background in RF hardware integration
— “8-12 years designing radio or communication systems, from algorithms to deployed products”
Candidates who have practical experience with waveform design and real-time processing constraints
— “Hands-on experience with modem or waveform design: modulation, coding, synchronization, equalization”
Individuals with a strong foundation in probability, DSP, and information theory, and the ability to derive solutions from first principles
— “Solid grounding in probability, DSP, and information theory; comfortable deriving solutions from first principles”

Things to consider

The role requires fluency in English and may involve working in a demanding, high-precision environment
— “Fluency in English required; French is a plus”
Candidates should be prepared to work closely with RF hardware and FPGA engineers, integrating algorithms into real-world systems
— “Work daily with RF hardware and FPGA engineers to bring designs into a fielded radio”

How to stand out

Highlight experience in deploying algorithms into real-world systems, not just theoretical design
— “Take algorithms from simulation to lab bench to real flight test”
Emphasize projects involving anti-jamming or signal intelligence in contested environments
— “Build algorithms that keep the radio link alive under active jamming”
Demonstrate ability to bridge algorithmic design with RF and FPGA hardware integration
— “Working hand-in-hand with RF hardware, FPGA, and software engineers to bring your algorithms from theory to flight”
Showcase expertise in modulation, coding, and equalization for robust, low-latency links
— “Design modulation, coding, and equalization schemes for a robust, low-latency radio link”
Include examples of optimizing mesh networking protocols for real-world use
— “Optimize protocols so multiple radio units share the airwaves without collision”

Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Senior

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

design and implement robust radio link algorithms
work closely with RF hardware and FPGA engineers

Typical background

Master's or PhD in Electrical Engineering, Signal Processing, or Applied Mathematics

Skills & requirements

Required

Signal ProcessingWaveform DesignAnti-jammingSignal IntelligenceMesh NetworkingAi-assisted ProcessingField ValidationRadio System Integration

Preferred

Modem DesignFPGA

Stack & domain

ModulationCodingEqualizationProbabilityDSPInformation TheoryRF HardwareFPGAMachine LearningJamming DetectionChannel PredictionMesh NetworkingECCMSigintCommunicationDefenseDroneRadioAI

About the role

Original posting from Harmattan Ai via Ashby

ABOUT US
Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces.
Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected.
About the Role
As Signal Processing Engineer, you own the algorithmic core of our drone-to-ground radio link — the system that keeps drones connected, controllable, and streaming in contested environments. You design the waveform, the anti-jam logic, and the signal intelligence that turn radio waves into a reliable link under hostile conditions, working hand-in-hand with RF hardware, FPGA, and software engineers to bring your algorithms from theory to flight.
Responsibilities
Waveform Design: Design modulation, coding, and equalization schemes for a robust, low-latency radio link.
Anti-Jamming (ECCM): Build algorithms that keep the radio link alive under active jamming.
Signal Intelligence (SIGINT): Detect and characterize other radio emitters in the operating environment.
Mesh Networking: Optimize protocols so multiple radio units share the airwaves without collision.
AI-Assisted Processing: Apply machine learning to jamming detection and channel prediction where it improves field robustness.
Field Validation: Take algorithms from simulation to lab bench to real flight test.
Radio System Integration: Work daily with RF hardware and FPGA engineers to bring designs into a fielded radio.
Candidate Requirements
Master's or PhD in Electrical Engineering, Signal Processing, or Applied Mathematics.
8-12 years designing radio or communication systems, from algorithms to deployed products.
Hands-on experience with modem or waveform design: modulation, coding, synchronization, equalization.
Solid grounding in probability, DSP, and information theory; comfortable deriving solutions from first principles.
Practical awareness of RF hardware and FPGA constraints (latency, precision, real-time processing).
Exposure to ECCM, SIGINT, or mesh networking is a strong plus.
Clear communicator across RF, FPGA, and software disciplines.
Fluency in English required; French is a plus.
We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.

Source: Harmattan Ai careers (Ashby)