Senior Embedded Software and Hardware Engineer
About The Position
Token is a biometric assured identity company building the most secure and seamless authentication hardware on the market. Our flagship product, the Token Ring, is a FIDO2/WebAuthn-certified wearable authenticator that delivers phishing-resistant, hardware-bound, biometrically-verified identity — all from a device worn on your finger. We serve regulated enterprises across healthcare, financial services, aerospace & defense, and the federal government. At Token, hardware and firmware are not supporting functions—together they are the heart of our security story. This role sits at the intersection of electronics, embedded software, cryptography, and manufacturing in a way few engineering roles can offer. We are looking for a versatile Senior Embedded Software & Hardware Engineer who can own a product end to end—from schematic and PCB layout through firmware, bring-up, testing, and manufacturing. This is a hands-on role for the kind of engineer who designs the board, writes the code that runs on it, and is first to the bench when something doesn’t work. You will design and debug both the hardware and the embedded software behind Token’s biometric authentication devices, select and qualify components, test pre-production prototypes, run RF and board-level diagnostics, and work directly with manufacturing to get products built and to root-cause failures when they occur.
Requirements
- Bachelor’s degree in electrical engineering, computer engineering, computer science, or a related field.
- 5+ years in embedded systems development spanning both firmware and hardware.
- Expertise in C/C++ for resource-constrained embedded systems (Rust a plus).
- Strong grasp of embedded architecture, microcontroller/microprocessor fundamentals, and real-time operating systems (RTOS).
- Demonstrated hardware design experience: schematic capture and multilayer PCB layout.
- Experience with hardware bring-up, board-level diagnostics, and hardware/software integration.
- Hands-on lab proficiency with oscilloscopes, logic analyzers, and spectrum analyzers, including RF testing.
- Systematic, relentless debugging and root-cause skills across hardware and software.
- Experience working with contract manufacturers to resolve production and quality issues.
- Familiarity with version control (Git), issue tracking (Jira), and agile methodologies.
Nice To Haves
- Experience with FIDO2/WebAuthn, secure elements, or other cryptographic hardware.
- RF and wireless design experience (BLE, NFC, antenna design and tuning).
- Design-for-manufacturing and design-for-test (DFM/DFT) experience.
- Failure-analysis techniques such as X-ray inspection, cross-sectioning, and thermal imaging.
- Low-power, battery-powered, or wearable device design.
- Familiarity with EMC and regulatory compliance (FCC, CE) and certification processes.
- Experience in regulated industries such as healthcare, financial services, aerospace/defense, or federal.
Responsibilities
- Design, develop, debug, and maintain embedded firmware across the full lifecycle—requirements, architecture, implementation, test, and documentation.
- Read, understand, and apply component datasheets, reference manuals, and applicable standards (FIDO, JavaCard, and others) in Token designs.
- Monitor and optimize use of constrained system resources—CPU, memory (RAM/NVRAM), and I/O.
- Write clean, maintainable, well-documented code and participate in code reviews.
- Design schematics and lay out PCBs for new products and revisions of existing ones.
- Select components and manage the BOM for performance, availability, quality, and cost.
- Own hardware bring-up and hardware/software integration on new boards.
- Define hardware and software specifications together to ensure compatibility and performance.
- Test pre-production prototypes and diagnose issues spanning both hardware and software.
- Perform RF testing and board-level diagnostics using oscilloscopes, logic analyzers, and spectrum analyzers.
- Troubleshoot hardware faults—bad solder joints, design issues, marginal components—alongside general hardware and software debugging.
- Lead failure analysis on prototypes, returns, and production defects, persisting until root cause is determined and driving corrective action.
- Work directly with manufacturing and contract manufacturers to resolve production issues and improve yield.
- Ensure component and design decisions produce a high-quality, cost-effective, and manufacturable product.
- Collaborate across hardware, firmware, cloud, mobile, and manufacturing teams to align on product requirements and goals.
- Contribute to engineering processes, tooling, and best practices, and embrace AI tools to streamline development, documentation, and testing.
- Ensure compliance with applicable standards and regulations (e.g., ISO 13485, ISO 9001, FIDO, SOC 2).
Benefits
- Comprehensive health, dental, and vision benefits
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Career Level
Senior
