Job description
FREELANCE EMBEDDED SOFTWARE ENGINEER (AUDIO / BLUETOOTH) Location: Amsterdam (on-site, with regular office presence expected) Contract: Freelance | Full-time | Expected through the end of December (project-dependent) Start: ASAP ABOUT THE ROLE Loop is looking for an experienced Freelance Embedded Software Engineer to support the final development, validation, and production launch of a next-generation active earbud product.
This role provides additional engineering capacity during the critical validation and production phases, helping ensure a successful transition from development to mass production and commercial launch. You'll focus on firmware stabilization, system integration, debugging complex issues, and delivering production-ready firmware.
Working closely with Electrical Engineering, Mobile Software Engineering, and Software QA, you'll help resolve technical challenges and ensure a successful product launch. WHAT YOU'LL DELIVER
- Stabilize, optimize, and debug embedded firmware across audio, Bluetooth (BLE + BR/EDR), and power management.
- Investigate and resolve complex firmware issues impacting audio performance, connectivity, battery life, and overall system reliability.
- Support DVT, PVT, and manufacturing builds by resolving release-blocking issues and improving firmware quality.
- Collaborate with Electrical Engineering, Mobile Software Engineering, and Software QA to resolve integration issues and support production readiness.
- Contribute to firmware releases by identifying technical risks and driving timely resolution.
WHAT WE'RE LOOKING FOR
- Strong Embedded C/C++ experience on ARM-based embedded platforms, ideally with multi-core So. Cs.
- Experience developing Bluetooth (BLE + BR/EDR) firmware for consumer electronics or other battery-powered devices.
- Experience with embedded audio products such as earbuds, headphones, or wearables.
- Strong embedded debugging and system integration skills, with experience supporting products through DVT, PVT, and production.
- Experience optimizing firmware for low-power operation.
- Comfortable working with GitHub, Jira, and cross-functional engineering teams.
- Experience with Airoha chipsets and SDKs is a strong advantage.
NICE TO HAVE
- Experience with Active Noise Cancellation (ANC) or audio DSP.
- Experience supporting manufacturing or factory validation.
- Familiarity with AI-assisted development tools such as Claude Code. ADDITIONAL INFORMATION
- This role is primarily based in our Amsterdam office. We expect a regular on-site presence of 2–3 days per week during quieter project phases, increasing to 4–5 days per week during critical validation, production, and launch activities.
- Occasional travel to our Antwerp headquarters may be required to support collaboration, project activities, and key development phases.
- Immediate availability is required due to the project's validation and production timeline.