Embedded Developer

Sera4•Waterloo, ON

45d•Hybrid

About The Position

Sera4 is seeking a Embedded Developer to design and deliver reliable security-focused embedded systems spanning firmware, hardware, and supporting internal tools. This role focuses on developing production-grade embedded solutions from concept through validation and release while ensuring quality, performance, and manufacturability. You will work closely with mobile, cloud, test, and product teams to ensure seamless system integration and dependable product performance in real-world deployments. This position is ideal for someone who enjoys solving complex system problems, bridging hardware and software, and delivering robust products that operate reliably in the field.

Requirements

Strong experience developing embedded software in C
Experience using Python for tooling, automation, or test frameworks
Familiarity with RTOS development (Zephyr preferred)
Experience debugging embedded systems using:
Console logs
GDB or equivalent debuggers
Oscilloscopes and multimeters
Strong troubleshooting skills for hardware and system-level issues
Experience with one or more of the following:
Bluetooth, Wi-Fi, Cellular (4G, LTE, LTE-M, 5G)
TCP / UDP, HTTP / HTTPS, DNS / DHCP
UART, I2C
USB
Experience working with modern development environments including:
Git-based version control (GitHub, Bitbucket)
CI/CD systems such as Jenkins
Issue tracking systems (Jira or equivalent)
Shell scripting
Docker / Podman
Experience with:
Unit testing
Hardware-in-the-Loop (HIL) testing
White-box and black-box functional testing
Automated test frameworks
Candidates should demonstrate working knowledge of embedded electronics including:
Analog and digital circuits
Resistors, capacitors, inductors, diodes, and transistors
Ohm’s Law and Kirchhoff’s Laws
Voltage regulators
Linear (Zener, LDO)
Switching (buck, boost)
ADCs and DACs
High-side vs low-side switching
Experience with:
Reading and designing schematics
Creating or reviewing PCB layouts
Hardware validation and troubleshooting
Deep experience in embedded firmware and hardware design.
Ability to deliver high-quality engineering work within schedule and cost targets.
Strong diagnostic and root-cause analysis capabilities across complex systems.
Drive improvements in engineering practices, tools, and product reliability.

Nice To Haves

Linux system administration
Linux networking configuration
Hardware driver integration
Mechanical prototyping
3D printing
Experience working in Agile-Scrum or Waterfall development environments

Responsibilities

Design, implement, test, and maintain high-quality embedded firmware and internal tools.
Designing and reviewing digital and analog circuits
Reading, reviewing, and creating schematics and PCB layouts using tools such as Altium
Ensuring hardware designs are production-ready and manufacturable
Validating prototypes and supporting transition to mass production
Collaborating with mechanical and manufacturing teams where required
Work closely with internal teams to ensure system integration and product success.
Supporting internal teams with Tier-2 technical analysis
Investigating system failures across hardware, firmware, and network layers
Performing structured root cause analysis
Implementing corrective actions to improve product reliability
Ensure designs meet reliability, regulatory, and certification requirements.
Following engineering best practices for design, validation, and testing
Implementing automated testing strategies
Ensuring products meet global safety and regulatory standards