Location: Neuchatel

About Our Team

Semtech’s Wireless Applications team is a global group of passionate engineers dedicated to ensuring successful customer design-ins of Semtech wireless and Lo Ra® solutions.

We develop and deliver advanced hardware and firmware IoT solutions for the LPWAN space, supporting customers and partners worldwide.

Job Summary:

We are seeking a Junior Firmware Applications Engineer to play a key role in enabling customer success with Semtech’s wireless technology. You will write evaluation firmware, reference application code, and customer enablement examples that validate and demonstrate Semtech IoT solutions.

You will work closely with Field Application Engineers and customers to debug embedded software, resolve integration challenges, and accelerate design-in across Lo RaWAN and other LPWAN wireless protocols.

Additionally, you will benchmark firmware solutions, evaluate RF device and SDK performance, produce high-quality technical documentation, and contribute to field testing activities while collaborating with colleagues across Europe and beyond.

Key Responsibilities:

Customer & Internal Technical Support (~40%)

• Provide hands-on technical support to Field Application Engineers and directly to customers, resolving firmware integration issues and debugging embedded software.
• Accelerate customer design-in and adoption of Semtech wireless technology.

Firmware Development & Evaluation (~40%)

• Develop and maintain evaluation firmware and low-level drivers for Semtech RF transceiver products, including silicon bring-up support.
• Contribute to evaluation and integration of Semtech SDKs and development tools; identify issues and propose improvements.
• Create reference applications, proof-of-concept implementations, and customer enablement examples for Lo Ra-based and multi-protocol IoT solutions.
• Benchmark firmware solutions and evaluate RF devices / SDK performance across power, latency, throughput, memory footprint, and RTOS environments.

Technical Documentation (~20%)

• Produce high-quality technical documentation including application notes, getting-started guides, code examples, and training materials to promote Semtech products and facilitate Lo Ra technology design-in.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field.
• 2–3 years of professional experience in embedded firmware development (C/C++), including low-level driver development, hardware bring-up, and debugging on resource-constrained MCU platforms.
• Solid knowledge of MCU architectures (ARM Cortex-M, RISC-V) and RTOS environments (Zephyr, FreeRTOS, ThreadX, or equivalent).
• Familiarity with debugging techniques (JTAG, SWD), hardware interfaces (UART, SPI, I²C, JTAG), and measurement tools (oscilloscope, logic analyzer, power profiling).
• Experience with embedded development toolchains (GCC, GNU Make, VS Code), version control (Git), CI/CD pipelines (GitLab CI or equivalent), and shell scripting.
• Python programming experience for test scripting, automation, or tooling.
• Familiarity with wireless communication protocols: Lo RaWAN, other LPWAN or mesh protocols (Thread, Zigbee, Sidewalk, BLE, LTE-M, NB-IoT) is a strong advantage.

Desired Qualifications:

• Experience with SoC-based development platforms: SDK setup, BSP configuration, development environment integration, and hardware-software co-debug.
• Experience benchmarking and profiling embedded firmware: power, latency, throughput, memory optimization.
• Knowledge of RF and wireless system fundamentals to support RF-related customer issues.
• Rigorous, creative, and solution-oriented problem-solving skills.
• Curiosity and adaptability in a fast-evolving, multi-technology environment; able to manage multiple concurrent tasks effectively.
• Excellent communication skills; able to explain complex firmware and protocol concepts to both technical and non-technical audiences.
• Comfortable working as a partner within a distributed, multi-site engineering team.
• Full professional proficiency in English; French is a bonus.

Career Growth Philosophy:

At Semtech, we believe innovation starts with people. We are committed to empowering professional development through mentorship, continuous learning resources, and a collaborative, idea-rich engineering environment.

Our pay-for-performance culture rewards initiative, encourages growth, and recognises meaningful technical and leadership contributions.

Engineers in this role are supported to expand their influence, deepen their expertise, and shape both their career progression and the future of Semtech’s digital engineering capabilities.

Additional Notes

The intent of this job description is to outline the major duties and responsibilities of this position. Incumbents may be required to perform job-related tasks beyond those listed.

All duties and responsibilities are considered essential job functions and requirements.