Senior Firmware Engineer

Luxer One; Sacramento (CA); On-site; USD 140,000 - 175,000; Full time

Benefits offered by this job

Annual performance bonus

401(k) with employer match

Health, dental, and vision benefits

Relocation assistance

Job summary

Luxer One is seeking a Senior Firmware Engineer in Sacramento, CA to own firmware architecture for locker control boards, IoT gateways, and related hardware. You will drive end-to-end development from bring-up to production, including OTA updates and field reliability.

You will work cross-functionally with electrical engineers and manufacturing partners, contribute to architecture decisions, and leverage AI tools to improve documentation, debugging, and status reporting.

Qualifications

• Five or more years of firmware or embedded software engineering experience.
• Strong C/C++ in an embedded context.
• Experience with wireless connectivity in embedded products (BLE/WiFi/cellular).
• OTA update design and implementation with safe rollback.
• Hardware bring-up and debugging with test equipment.
• Ability to produce technical specifications and architecture documents.
• Demonstrated AI fluency in engineering workflow.

Responsibilities

• Own firmware architecture and delivery for Luxer One's embedded hardware portfolio, including boards and gateways.
• Design and implement firmware from ground up on new hardware programs: architecture decisions, bring-up, RTOS integration, production readiness.
• Build and maintain OTA update pipelines and device management integration: enrollment, provisioning, telemetry.
• Partner with electrical engineers and manufacturing on hardware design review, NPI readiness, production validation.
• Write and maintain hardware specifications, architecture docs, and technical docs.
• Maintain and improve reliability of devices in the field; monitor telemetry and deploy patches.

Skills

C/C++ embedded

RTOS (FreeRTOS)

Wireless connectivity

OTA updates

Hardware bring-up

AI fluency

Communication

Tools

Oscilloscope

Logic analyzer

Debugger

Buildroot/Yocto

Job description

Sacramento, United States | Posted on 10/14/2026

Luxer One designs and deploys smart locker and access systems across multifamily properties, commercial enterprises, retail chains, and food delivery networks across North America. An Assa Abloy company, our products span cloud, mobile, and physical hardware — connected through firmware that runs in the field, at scale, around the clock. We manufacture control boards, IoT gateways, access hubs, and connected locker systems, and the firmware powering those devices is what makes all of it reliable.

Why This Role Matters

When firmware works, nobody notices. When it doesn't, a deployed device goes dark, a locker doesn't open, or a fleet of devices stops reporting health to the cloud. At Luxer One, firmware is not a support function — it is the reliability foundation of everything we ship. We are actively scaling our embedded portfolio: next-generation control boards, IoT-connected gateways, BLE and WiFi-enabled locker hardware, mesh access systems, and temperature-managed storage devices. Each program is a real production deployment with real uptime expectations and real customers on the other end.

We need a Senior Firmware Engineer who can own programs end to end — from hardware bring-up and architecture through production firmware, OTA update pipelines, and field reliability — and who brings genuine seniority to the embedded systems decisions that define product quality at scale.

Who You Are

You are a firmware engineer who is equally comfortable writing embedded C at the register level and presenting a hardware architecture decision to a cross-functional team. You do not wait for specs to be perfect before you start, and you do not consider a program done when code ships — you own it through field deployment and into production operations.

You are:

A low-level builder — you write production C/C++ on microcontrollers, understand memory models, peripheral drivers, and timing constraints, and can debug a device in the field with an oscilloscope and a logic analyzer as readily as in a simulator

Reliable in production — you treat uptime as a personal accountability; you build telemetry in, design OTA update paths that fail safely, and watch the fleet after launch

A cross-discipline collaborator — you work directly with electrical engineers on schematic review and hardware bring-up, and with manufacturing partners on NPI readiness and production tooling

A technical decision-maker — you author architecture docs and hardware specifications that others build from, not just code that implements what someone else decided

AI-fluent — you actively use AI tools in your engineering workflow: for documentation, code review, debugging analysis, status reporting, and technical communication. You move faster and produce higher-quality artifacts because of it, and you are interested in the broader frontier of AI-assisted embedded development

Operationally minded — you understand that embedded systems in a commercial IoT product live in the real world, subject to network outages, power interruptions, hostile environments, and user error. You design for that reality, not the happy path

And you bring:

A track record of shipping embedded firmware for IoT or connected hardware products into production at meaningful scale

Experience with the full embedded development lifecycle: architecture, bring-up, driver development, application firmware, manufacturing tooling, OTA, and field maintenance

Hands-on experience with BLE, WiFi, or cellular connectivity in embedded products

Comfort owning multiple concurrent hardware programs with limited supervision

What You'll Do

Own firmware architecture and delivery for Luxer One's embedded hardware portfolio — including locker control boards, IoT gateways, BLE/WiFi-connected access hardware, and next-generation platform programs

Design and implement firmware from the ground up on new hardware programs: architecture decisions, peripheral bring-up, RTOS integration, application layer, and production readiness

Build and maintain OTA update pipelines and device management integration — including MDM enrollment, provisioning workflows, and fleet telemetry

Partner with electrical engineers and manufacturing partners (including Ansync) on hardware design review, design for manufacturability, NPI readiness, and production validation

Write and maintain hardware specifications, architecture decision records, and technical documentation that inform roadmap decisions and manufacturing commitments

Maintain and improve the reliability of devices in the field — monitoring telemetry, identifying failure patterns, shipping patches, and owning uptime metrics on deployed fleets

Contribute to firmware quality standards: code review, CI pipeline health, automated test coverage, and escape defect rates from QA

Actively use AI tools in your workflow — for documentation generation, debugging analysis, status reporting, and code review — and help the team develop best practices for AI-assisted embedded development

Represent embedded systems in cross-functional planning — product roadmap, NPI programs, commercial partner engagements — as the authoritative technical voice on firmware capabilities and constraints

Requirements

What We're Looking For

Five or more years of firmware or embedded software engineering experience, with demonstrated ownership of production IoT or connected hardware programs

Strong C/C++ in an embedded context — microcontrollers, peripheral drivers, RTOS (FreeRTOS or similar), memory management

Experience with wireless connectivity in embedded products — BLE, WiFi, or cellular — including protocol handling, reliability design, and power management

OTA update design and implementation experience — including safe rollback, version management, and fleet-scale deployment

Experience with hardware bring-up: schematic review, debugger and logic analyzer usage, boot sequence troubleshooting

Experience producing technical specifications and architecture documents — not just code

Demonstrated AI fluency in your engineering workflow — you use AI tools actively and can articulate how they make you more effective

Strong communication — written and verbal — across technical and non-technical audiences

Strongly Preferred

Experience working with contract manufacturers on NPI programs — design reviews, manufacturing test tooling, production validation

Familiarity with device management platforms (MDM) for IoT fleets — enrollment, provisioning, remote management

Linux-based embedded systems experience (Yocto, Buildroot, or similar)

Experience with secure boot, secure element integration, or key management in an embedded context

Background in access control, smart lock, or connected physical security systems

Experience with fleet telemetry design and uptime instrumentation for connected hardware at scale

Location & Work Model

This is a Sacramento, CA-based role. We work in-office and value in-person collaboration with the hardware team, manufacturing partners, and cross-functional engineering. Relocation support available for the right candidate.

$140,000 – $175,000 base salary, commensurate with experience

Annual performance bonus

401(k) with employer match

Competitive health, dental, and vision benefits

Luxer One is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.