1X Technologies
Staff Firmware Engineer - Charger
San Carlos, CA · Staff+
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$21,187 more — $221,187 — moves this role to Level IV and 4 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $221,187 would place this position at wage Level IV. That figure is within the posted range, and I'd like to target it. This role classifies under "Software Developers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Software Developers (15-1252) · San Francisco-Oakland-Fremont, CA. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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About the role
- We sit at the intersection of hardware and software, and our work is directly on the critical path to every product milestone: without reliable firmware, the robot cannot move, charge, or operate safely.
- including power factor correction and isolated DC-DC conversion topologies
- current, constant-voltage, and taper phases with cell-chemistry-appropriate voltage and
Responsibilities
- We're building humanoid robots that work in home - doing the chores, handling the tasks, and giving people their time back.
- NEO is our flagship - a home robot designed to move, learn, and operate in the real world alongside real people.
- We're scaling, we're hiring with intention, and we need people who want to build something that will genuinely change how humans spend their time - safely creating abundance for all.
Requirements
- 5+ years of embedded firmware development in C/C++ on real hardware, with direct experience managing interrupts, DMA, and timing-critical execution (7+ years for senior/staff-level positions)
- Experience with safety-critical or fault-tolerant embedded systems
- familiarity with safety integrity standards such as IEC 61508 or ISO 26262
Nice to have
- coordination, plus additional embedded interfaces (SPI, I²C, UART) for communication
Skills
- Familiarity with real-time operating systems (FreeRTOS, SafeRTOS, or similar)
- Background in robotics, autonomous systems, or complex electromechanical products
Compensation
- $200,000 - $280,000 + Equity
Benefits
- Comprehensive medical, dental, and vision coverage
- Generous paid time off, company holidays, and parental leave
- Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) options
- Commuter benefits (transit and parking)
- Short-term and long-term disability, and life insurance
- Employee Assistance Program (EAP) for mental health, financial, and personal support
Company info
- Develop and maintain charger firmware controlling AC-DC power conversion stages,
- Architect the charger-to-BMS communication interface over CAN or similar embedded
- Responsible for the testing, validation, and verification of initial firmware releases to
- Deep embedded instincts writing firmware that is correct under real hardware conditions: interrupt timing, DMA conflicts, communication protocol edge cases, and hardware fault behavior
- First-principles problem solver diagnosing novel failures at the firmware-hardware boundary using lab tools and reasoning from fundamentals, not just vendor documentation or established patterns
- Safety-aware by default understanding what "fail safe" means in a physical system and treats protection logic, fault detection, and safe-state transitions as first-class firmware concerns
- Effective cross-functional partner translating firmware constraints and failure modes clearly to hardware architects, electrical engineers, and systems engineers; supports bring-up without waiting to be directed
- We've been at this since 2014 and we're at the point where the hard problems are behind us and the hard work is in front of us.
Equal opportunity
- 1X is an Equal Opportunity Employer.
- All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or veteran status, justice system impact, or any other characteristic protected under applicable federal, state, or local law.
Visa & Work Authorization
- rd to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or ve
This listing is sourced directly from 1X Technologies's careers page and normalized into a canonical job model.