​​Digital Signal Processing Engineer​

Location:
Meylan, France (Hybrid — Office: Monday–Friday)

Our Team:
Join Semtech'sWireless and LoRa System teams, spanning ourNeuchâtel and Grenoble offices, where we develop unique system-level solutions forLow Power Wireless Area Network (LPWAN) products. 

As the world's leading experts inlong-range, low-power, battery-powered wireless communication, our capability spans everything from antenna design throughIC analog and digital design, low-power systems, protocol development, and cloud-based solutions.

You'll be part of the journey shaping thenew LoRa and LoRaWAN system architecture, working alongside a highly skilled, multi-disciplinary team at the forefront of IoT connectivity.

Job Summary
As aDSP Algorithm Engineer, you'll design, develop, and optimisesignal processing algorithms for wireless modem IP blocks. 

Working primarily inMatlab, you'll build and maintain reference models and evaluate algorithm performance under realistic channel conditions, while also contributing directly tohardware implementation throughRTL design in SystemVerilog andbit-accurate C modelling — working closely with the digital design and radio validation teams to ensure a smooth transition from algorithm to silicon.

Responsibilities

• Design and refine PHY-layer signal processing algorithms, including modulation/demodulation, synchronisation, channel estimation, filtering, and error correction; build and maintain the floating-point and fixed-pointMatlab reference models used as the golden reference for hardware implementation and validation teams.
• Simulate and analyse modem performance under various channel conditions (AWGN, fading, interference) across key metrics such as BER/PER, sensitivity, and robustness.
• Contribute to RTL implementation of modem IP blocks inSystemVerilog and developbit-accurate C models, supporting fixed-point conversion, assessing implementation trade-offs, and validating hardware behaviour against Matlab references.
• Support radio validation teams in correlating lab measurement results with simulation models, iterating on algorithm improvements based on findings.
• Monitor state-of-the-art DSP and wireless communication techniques, evaluating their applicability to Semtech's product roadmap.
• Produce clear documentation, including algorithm specifications, simulation reports, and performance analyses for internal teams and stakeholders.

Minimum Qualifications

• MSc or PhD in Signal Processing, Telecommunications, Electronics, or a related field.
• 3+ years of experience in DSP algorithm development for wireless communication systems.
• Strong proficiency inMatlab for algorithm modelling, simulation, and performance analysis.
• Hands-on experience inRTL design (SystemVerilog) andbit-accurate C modelling for signal processing blocks.
• Solid understanding ofwireless PHY layer principles: modulation, synchronisation, channel estimation, FEC.
• Rigorous analytical mindset with strong mathematical foundations.
• Goodcommunication and collaboration skills in an international environment.

Desired Qualifications

• Knowledge oflow-power wireless technologies (LoRa, BLE, FSK, or similar).
• Good understanding offixed-point implementation constraints and hardware design trade-offs.
• Knowledge ofRF instruments (vector signal generators, spectrum and signal analysers).

🚀Career Growth Philosophy At Semtech, we believe thatinnovation starts with people. That's why we're committed to empowering your professional development—through access tomentorship, learning resources, and acollaborative, idea-rich environment. Ourpay-for-performance culture rewards initiative, encourages growth, and celebrates meaningful contributions.

A reasonable estimate of the pay range for this position is €49,000 - €70,000. There are several factors taken into consideration in determining base salary, including but not limited to: job-related qualifications, skills, education and experience, as well as job location and the value of other elements of an employee's total compensation package.

Join us, and be part of a team that's building the future of connectivity—together.