Embedded Systems Engineer: Full-Stack HW & Firmware

PassFort; United States; On-site; USD 54,000 - 74,000; Full time

Benefits offered by this job

Pension with SIPP options

Weekly pastries

Monthly all-hands lunches

Autonomy & accountability culture

Job summary

Unicorn Biotechnologies is hiring an embedded systems engineer to own electronics and firmware across our product platforms. You’ll design schematics and PCB layouts, prototype in-house, and drive production boards from concept to shipped hardware with production firmware on STM32/ARM microcontrollers.

You’ll bridge hardware and software, implementing CAN, Ethernet, and serial communications while collaborating with a small team in a lab environment.

Qualifications

• Demonstrated experience across both electronics hardware design (schematic capture, PCB layout, component selection) and firmware development (C/C++ on microcontrollers such as STM32/ARM).
• Competence with PCB design tools (Altium, KiCad, or equivalent) and hands-on prototyping skills: comfortable with soldering (THT and SMD), rework, and bench testing.
• Strong understanding of real-time systems, interrupts, peripherals, and hardware abstraction layers.
• Experience with communication protocols: CAN, SPI, I2C, UART, Ethernet/TCP-IP.
• Comfort interfacing embedded systems with higher-level application layers (Python, REST APIs, MQTT, or similar).
• Evidence of taking designs from concept through to production hardware running deployed firmware.
• Experience developing or maintaining full-stack software with a Python backend.
• A methodical approach to debugging, testing, and documentation.

Responsibilities

• Schematic design and PCB layout for control boards, sensor interfaces, power distribution, and system interconnects.
• Prototyping and validating designs in our in-house electronics workshop, driving rapid iteration from concept to working board.
• Design for manufacture: translating prototypes into production-ready boards, managing BOM optimisation, and coordinating with contract manufacturers.
• Writing and maintaining production firmware in C/C++ on STM32/ARM microcontrollers, real-time control of pumps, valves, sensors, and actuators.
• Designing and implementing inter-device communication (CAN, Ethernet, serial) across networked instruments.
• Supporting EMC, CE, and UL compliance testing and designing for long-term reliability in regulated environments.

Skills

Electronics hardware design

Firmware development

Schematic capture

PCB layout

C/C++ programming

STM32/ARM

Real-time systems

CAN

Ethernet

Python

REST APIs

MQTT

Debugging

Prototyping

Documentation

Tools

Altium

KiCad

Soldering

Rework

Job description

Unicorn Biotechnologies is hiring an embedded systems engineer to own electronics and firmware across our product platforms. You’ll design schematics and PCB layouts, prototype in-house, and drive production boards from concept to shipped hardware with production firmware on STM32/ARM microcontrollers.

You’ll bridge hardware and software, implementing CAN, Ethernet, and serial communications while collaborating with a small team in a lab environment.