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About the Role

We're seeking a Senior Electrical Engineer to join the team building GRID, our rebar-tying mobile robot. You will design, test, and manufacture electronic and electrical subsystems, including harnesses, control boards, test fixtures, and power electronics, for use in harsh environments. This is a hands-on, cross-disciplinary role: you'll work alongside our mechanical, software, and manufacturing teams, with mentorship from senior engineers and a high degree of autonomy.

Responsibilities

Own the design and development of multi-layer PCBAs for GRID's subsystems, including motor interfaces, sensor electronics, power distribution, communication interfaces, and test fixtures, through conception, development, bring up, debugging, and manufacturing.
Perform schematic capture and layout incorporating high-speed digital, RF, mixed-signal, and power circuitry.
Develop and maintain electrical system architectures, including DC power distribution, circuit protection, grounding, communication interfaces, and subsystem interconnections.
Design robust electronics for operation in electrically noisy environments, addressing grounding, shielding, filtering, signal and power integrity, and transient protection.
Ensure designs meet applicable EMI/EMC regulatory requirements through pre-compliance testing, troubleshooting, and formal compliance testing.
Work with mechanical and software engineers to properly dimension power distribution and integrate electronics, wiring, and harnesses into field-ready assemblies that withstand outdoor dust, vibration, temperature swings, and weather.
Identify potential failure modes, implement appropriate protection and fault-monitoring mechanisms, and develop test procedures to validate hardware performance, reliability, and environmental robustness.
Participate in system-level and field testing.
Deliver schematics, layout reviews, engineering studies, test results, and architecture documents so designs are traceable and reproducible.
Generate and present design concepts, and run design reviews with team members.
Apply design-for-manufacturing and design-for-test principles.
Collaborate with fabrication, assembly, and manufacturing partners to support prototype builds, production testing, and hardware revisions.
This role covers design, assembly, manufacturing, and test; your mix of responsibilities will depend on the project and team, giving you broad exposure to robotics hardware development.

Requirements

Bachelor's degree in Electrical Engineering, Computer Engineering, or a closely related field, or equivalent practical experience.
5+ years of professional experience designing and developing electronic hardware.
Strong understanding of analog and digital electronics, power systems, and core electrical engineering principles.
Experience designing electrical wiring harnesses, including connector selection, wire sizing, shielding, routing, and manufacturing documentation.
Experience designing for EMI/EMC regulatory compliance and electrical noise immunity, including shielding, filtering, ESD and transient protection, and pre-compliance testing.
Experience with DC power distribution, voltage regulation, circuit protection, and system-level electrical integration in electromechanical systems.
Experience developing embedded hardware incorporating microcontrollers, sensors, and digital communication interfaces.
Proficiency with PCB design tools such as Altium Designer, KiCad, or equivalent.
Strong hands-on experience with electronic test equipment, board bring-up, hardware debugging, and root-cause analysis.
Familiarity with design-for-manufacturing and design-for-test principles.
Ability to independently own hardware development from requirements through prototyping, validation, and integration, while collaborating effectively across engineering disciplines.
Authorized to work in the United States.
This is an in-person role, five days a week, in the San Francisco Bay Area.
You must be based in the Bay Area or willing to relocate.

Skills

PCB design tools such as Altium Designer, KiCad, or equivalent
Electronic test equipment
Board bring-up
Hardware debugging
Root-cause analysis
Design-for-manufacturing
Design-for-test
Schematic capture
Multi-layer PCB design
High-speed digital layout
RF layout
Signal integrity
Impedance control
Grounding
Stackup design
Motor controllers
BLDC motor drives
Power electronics
Battery-powered systems
DC-DC converters
High-current power distribution
CAN
Ethernet
SPI
I2C
UART
USB
Embedded firmware development in C
Python scripting for test automation or hardware validation
Mobile robotics
Industrial automation
Electromechanical systems
UL/ANSI/FCC/CE certification
Ruggedized electronics for outdoor environments
Environmental sealing
Vibration resistance
Thermal management
Functional safety concepts
Emergency-stop circuits
Interlocks
Fault monitoring
Transitioning hardware from prototypes to production
PCB fabrication
Assembly partners
AI tools and platforms

Location

San Francisco Bay Area

Work Type

In-person
Full-time

Experience Level

Senior
5+ years of professional experience

Education Level

Bachelor's degree in Electrical Engineering, Computer Engineering, or a closely related field, or equivalent practical experience.

Benefits

Kaiser Gold HMO health plan
Relocation support
Daily lunches
Flexible PTO
Dog pets

About the Company

Arn Autonomy is building autonomous, non-humanoid robotic systems to construct infrastructure in extreme, unstructured environments, starting with next-gen construction job sites.
Our vision is to disrupt the $16 trillion global construction industry by pioneering a new Deep Tech philosophy that blends robotics, AI, and systems engineering at the frontier.
Our flagship product, GRID, is an autonomous rebar-tying robot deployed with rebar and concrete contractors on live job sites.

Equal Opportunity

Arn Autonomy is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, or any other characteristic protected by applicable law.