Hire by skill · Firmware and embedded software
Hire an Embedded Linux Engineer
An embedded Linux engineer builds and maintains the operating system image your device runs: the Yocto or Buildroot build, the board support package (bootloader, device tree, kernel drivers), the field update mechanism and the security patching that keeps it shippable. Talent Badger's bench includes firmware specialists with Linux, Yocto and BSP experience, available freelance or per project for bring-up, builds and update systems.
What embedded Linux work covers
- Yocto structure: your own layer with recipes and bbappends instead of edits to vendor layers, a machine configuration per board, and a distro configuration and image recipe that build the same way every time.
- BSP bring-up: U-Boot configuration, a device tree that matches the schematic, kernel drivers or patches for your peripherals, and a kernel version chosen with its support window in mind.
- Boot time and image size: each boot stage measured, unused services and kernel options removed, and a root filesystem small enough to update over the link the product actually has.
- Field updates: a read-only root filesystem with a separate data partition, and A/B updates through RAUC, SWUpdate or Mender that fall back automatically when a new image fails to boot.
- Security and maintenance: a verified secure boot chain, CVE tracking against your exact image, SBOM and license manifests, and CI builds with pinned layer revisions and a shared sstate cache so builds are repeatable and fast.
Signs you need an embedded Linux specialist
- The product still runs on a vendor evaluation image, and nobody can rebuild it from source or say exactly what is in it.
- A custom board won't boot past U-Boot, or a peripheral that works on the dev kit is missing on yours.
- There is no safe way to update units in the field, and one interrupted update could leave a device unbootable.
- A customer or security review is asking for an SBOM, a CVE patching plan or an open-source license report.
How to vet an embedded Linux consultant
- How do you change a vendor BSP? A strong answer puts the change in your own layer with a bbappend or new recipe, never edits upstream layers in place, and pins every layer to a known revision.
- The board stops after 'Starting kernel'. What do you check? Expect the console and earlycon settings, the device tree U-Boot actually passed, memory configuration and load addresses, worked through in order.
- How do you update a fleet without bricking units? Look for A/B or recovery partitions, signed update artifacts, and bootloader logic that falls back if the new image doesn't confirm a healthy boot.
- How would you keep this image patched for five years? A good answer covers a long-term-support Yocto release and kernel, regular CVE scans of the build, and a plan for carrying vendor patches forward.
- When would you choose Buildroot over Yocto? Expect a balanced view: Buildroot for a small, single-product image and a shorter learning curve, Yocto for product families, SDKs and vendor BSP layers.
Cost and engagement shape
- On Talent Badger each profile shows a rate band set by assessed level, from $95/hr at engineer level up to $245/hr at the top of the most senior band.
- Typical shapes: BSP bring-up for a new board, moving a product off a vendor demo image into a maintained Yocto build, adding an A/B update system, or a security and license review of an existing image.
- Planning range, not a quote: bringing up and integrating one defined block, such as a new driver with its device tree node, is commonly budgeted around 40 hours. Load named hours by about 1.3–1.5× for reviews, meetings and contingency.
- Code lands in your repositories, signing keys stay with your company, and IP assignment is signed before work begins.
Common questions
They build and maintain the Linux platform under your application: the build system, the board support package, the boot and update path, and the security and license work that comes with shipping open-source software. On most projects they hand your application team a reproducible image and an SDK to develop against.