Firmware/Embedded Engineer

Ethereum Technologies LLC; Town of Texas (WI); On-site; USD 90,000 - 120,000; Full time

Job summary

A technology firm located in Wisconsin is seeking an experienced Software Engineer specializing in embedded Linux systems. The ideal candidate will have strong skills in C/C++/Python and substantial experience with Yocto and networking. Responsibilities include customizing Linux OS images, managing network protocols, and ensuring security and performance of embedded devices. This role offers the opportunity to work in a collaborative environment focused on innovative IoT solutions.

Qualifications

• Strong C/C++/Python skills in embedded Linux environments.
• 5-10+ years related experience.
• Hands-on experience with Yocto, BSPs, and networking stacks.

Responsibilities

• Build and customize Linux OS images (Yocto or Debian‑based).
• Integrate kernel modules, device drivers, and BSPs.
• Implement and manage Ethernet, Wi‑Fi, LTE/4G, and PoE networking.

Skills

C/C++/Python

Embedded Linux

Networking

Yocto

Job description

Job Description

Experience:

• Strong C/C++/Python skills in embedded Linux environments.
• Hands‑on experience with Yocto, BSPs, and networking stacks.
• Familiarity with OTA updates, secure boot, and cloud‑IoT integration.
• 5‑10+ years related experience.

Responsibilities

Embedded Linux Platform

• Build and customize Linux OS images (Yocto or Debian‑based).
• Integrate kernel modules, device drivers, and BSPs.
• Optimize boot time, memory, and power usage for embedded devices.

Connectivity & Networking

• Implement and manage Ethernet, Wi‑Fi, LTE/4G, and PoE networking.
• Configure DHCP, DNS, MQTT, HTTP/HTTPS, NAT, and firewall rules.
• Ensure stable and secure connectivity with automatic recovery (99% uptime target).

System Software & Middleware

• Develop C/C++/Python services for data acquisition, buffering, and routing.
• Integrate edge ML models and cloud middleware (AWS, MQTT, REST APIs).
• Manage local storage, caching, and retry logic for intermittent networks.

Security & Reliability

• Implement secure boot, signed firmware, and integrity checks.
• Manage certificates, keys, and access control.
• Support OTA firmware updates with rollback protection.

Monitoring & Diagnostics

• Design system health telemetry (CPU, memory, connectivity, temperature).
• Create watchdogs, auto‑recovery scripts, and remote logging/debugging (jFrog, syslog).
• Support remote firmware updates and diagnostics.

Testing & CI/CD

• Develop and automate unit/integration tests.
• Collaborate with QA on test execution and system validation.

Hardware Integration

• Bring up and test peripherals (Wi‑Fi, LTE, USB, GPIO).
• Integrate and test Linux drivers (Qualcomm and custom).
• Validate sensor and RF interfaces.

Performance Optimization

• Profile CPU, memory, and I/O performance.Tune kernel and network parameters for reliability and throughput.
• Optimize flash storage and file system usage.

Cloud & Edge Integration

• Develop clients for MQTT, HTTPS, and WebSockets.
• Handle device provisioning and cloud connectivity (AWS IoT Core, Azure).
• Support remote configuration and edge analytics modules.

Collaboration & Documentation

• Work cross‑functionally with hardware, QA, and cloud teams.
• Participate in code/architecture reviews.
• Document system architecture and deployment guides.

ETHEREUM TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. ETHEREUM TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters. Nor will ETHEREUM TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract