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I will implement secure ota updates and embedded device security
Expert Embedded Linux and Firmware Developer STM32 RTOS IoT Systems
10 years delivering production-grade embedded firmware for real-world hardware. I've built firmware for US-based commercial products and completed 30+ projects on Fiverr.
Specializing in: STM32, ARM C...
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
About this Gig
Remote updates are critical for commercial IoT but carry the heavy risk of bricked hardware. I engineer fail-safe Over-The-Air (OTA) update mechanisms and secure architectures for your devices.
With 10 years of enterprise firmware experience, I design robust pipelines to ensure your field devices remain secure, online, and fully recoverable.
What I Implement:
- Embedded Linux OTA: Integrate update managers like Mender or SWUpdate into custom Yocto builds.
- Fail-Safe Architecture: A/B partition layouts, automatic rollbacks, and U-Boot configuration for zero bricked devices.
- RTOS / MCU OTA: Cloud-to-device updates via AWS IoT, FreeRTOS, or custom MQTT/HTTP bootloaders.
- Security & Cryptography: Secure Boot, hardware root of trust, cryptographic firmware signing, and encrypted payloads.
Why Work With Me?
- 10 years of expertise in high-level firmware and commercial Linux SoCs.
- Enterprise-grade reliability, strict memory management, and production-ready source code.
- Full technical support from architecture to deployment.
Please message me before ordering to discuss your hardware and partition layout.
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Other Electronics Engineering Services I Offer
FAQ
What hardware architectures and platforms do you support?
I specialize in commercial-grade SoCs and microcontrollers. For Embedded Linux, I work with custom boards, NXP i.MX series, Raspberry Pi Compute Modules, and BeagleBone. For RTOS/bare-metal, I support ESP32, STM32, and similar enterprise-grade MCUs.
How do you guarantee that a remote update won't brick the device?
I implement strict A/B (dual-bank) partition layouts combined with bootloader watchdog timers (e.g., in U-Boot or GRUB). If an OTA payload is corrupted or fails to boot properly, the system automatically triggers a rollback to the previous working partition.
Can you integrate an OTA client into my existing Yocto Project build?
Absolutely. If you already have a functional Yocto BSP, I can create custom bitbake layers to seamlessly integrate an update manager like Mender or SWUpdate, including configuring the necessary U-Boot environment variables.
Are the firmware payloads encrypted during the transfer?
Yes. Security is a priority. I ensure that all payloads are delivered over secure TLS connections (HTTPS/MQTT). Furthermore, the firmware images are cryptographically signed so the bootloader can verify their authenticity before executing any code.
