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Senior Firmware Engineer

2 weeks ago


Sydney, New South Wales, Australia The Onset Full time $120,000 - $150,000 per year

A little over two decades ago, a small team of engineers set out to reimagine how people create and share audio. What started as a single product has now evolved into one of Australia's biggest technology success stories — a company that designs, engineers, and manufactures products used by millions worldwide.

Today, this organisation is no longer just a hardware company.

It has become a global innovator in audio, software, and content creation tools, with offices across continents, an expanding R&D hub in Sydney, and a reputation for pushing boundaries in everything from advanced embedded systems to consumer electronics.

The pace hasn't slowed — if anything, it's accelerated. Over the last few years, the company has doubled down on new product lines, built world-class facilities, and invested heavily in engineering talent.

They're creating products that compete on the world stage, and their roadmap is only getting bigger.

The RoleThis isn't about maintenance or incremental tweaks. You'll be working on the design and development of next-generation consumer electronics — architecting systems from the ground up, integrating hardware and firmware, and ensuring products are robust enough to scale globally.

To keep building on this momentum, they're looking for a senior engineer who thrives at the intersection of technical depth and leadership. Someone who can:

  • Leading the development of embedded firmware in C/C++ on Nordic Semiconductor (nRF52/nRF53/nRF54) platforms, using the Zephyr RTOS.
  • Designing and optimising low-level drivers, peripherals, and communication protocols (I2C, SPI, UART, USB, BLE, Wi-Fi).
  • Developing and integrating wireless stacks (Bluetooth Classic/LE, 2.4 GHz ISM, Wi-Fi) and working closely with RF engineers on firmware tuning, calibration, and protocol optimisation.
  • Implementing firmware routines for antenna switching, RF coexistence, and power management to maximise wireless reliability and efficiency.
  • Building testable, maintainable firmware that integrates seamlessly with companion applications and tooling (Python/C#/CI pipelines).
  • Collaborating with electronics, acoustics, and RF teams to bring new product concepts to life — ensuring signal integrity and wireless performance are designed in at the firmware level.
  • Providing technical leadership: mentoring engineers, reviewing designs, and influencing architectural decisions across the embedded software group.

This isn't a role where you'll just keep the lights on. It's an opportunity to have your fingerprints on products that will be in the hands of creators around the world — and to do so inside an organisation that still moves fast enough for your ideas to matter.

What makes this opportunity different:

  • Work on products that ship in huge volumes worldwide, with your firmware running in the hands of millions of users.
  • Be part of a company that manufactures and tests its products locally, giving you direct access to labs, hardware, and rapid feedback loops.
  • Contribute across the full lifecycle — from concept and prototyping through to production, certification, and global release.
  • Join a senior engineering cohort driving standards in code quality, system design, and embedded excellence.
  • Step into a role with long-term leadership potential as the company continues its global expansion.

If you've ever wanted to combine the stability of a global business with the excitement of a startup-like roadmap — while building a pathway into leadership — this is that rare chance. Reach out to Thaís on