​​Digital Signal Processing Engineer​

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

Our Team

Join Semtech's Wireless and LoRa System teams , spanning our Neuchâtel and Grenoble offices, where we develop unique system-level solutions for Low Power Wireless Area Network (LPWAN) products.

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

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

Job Summary

As a DSP Algorithm Engineer , you'll design, develop, and optimise signal processing algorithms for wireless modem IP blocks.

Working primarily in Matlab , you'll build and maintain reference models and evaluate algorithm performance under realistic channel conditions, while also contributing directly to hardware implementation through RTL design in SystemVerilog and bit-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-point Matlab 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 in SystemVerilog and develop bit-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 in Matlab for algorithm modelling, simulation, and performance analysis.
• Hands-on experience in RTL design (SystemVerilog) and bit-accurate C modelling for signal processing blocks.
• Solid understanding of wireless PHY layer principles : modulation, synchronisation, channel estimation, FEC.
• Rigorous analytical mindset with strong mathematical foundations.
• Good communication and collaboration skills in an international environment.

Desired Qualifications

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

🚀 Career Growth Philosophy At Semtech, we believe that innovation starts with people . That's why we're committed to empowering your professional development—through access to mentorship, learning resources , and a collaborative, idea-rich environment . Our pay-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.