​​Digital Signal Processing Engineer​ at Semtech in FRA - Meylan

Location:
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.