Senior/Staff Embedded Software Engineer, Battery Systems (BMS and Charging)

Posted Yesterday
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San Carlos, CA, USA
In-Office
156K-227K Annually
Senior level
Aerospace • Automotive • Transportation
The Role
Develop and verify safety-critical embedded C++ software for aircraft battery management systems and battery ground support chargers. Responsibilities include battery monitoring, protection, diagnostics, charging, thermal management, communications, system integration, architecture, roadmap planning, requirements, certification documentation, HIL testing, debugging high-voltage systems, and mentoring engineers. The role collaborates across software, hardware, battery, systems, algorithms, aircraft, and operations teams.
Summary Generated by Built In
Company Overview

Imagine a piloted air taxi that takes off vertically, then quietly carries you and your fellow passengers over the congested city streets below, enabling you to spend more time with the people and places that matter most. At Joby, we've been working to make that dream a reality since 2009 and we're now in the final stages of certifying our aircraft with the FAA. With plans to launch our aircraft in the US and Dubai, we're now scaling manufacturing and preparing for the launch of our commercial service.

Overview

Joby's energy storage and distribution system is the heart of our electric aircraft: the battery packs that power flight, the Battery Management System (BMS) software that keeps them safe, healthy, and performant, and the Battery Ground Support Equipment (BGSE) that turns an eVTOL aircraft around in minutes. Together they form one energy ecosystem, engineered around the demands of commercial eVTOL service: flight safety, charge rate, thermal conditioning, automated operation, and deep integration between aircraft and ground infrastructure.


In this role, you'll be a key contributor to Joby's energy storage and distribution system software team, dedicated to C++ software development across both the aircraft BMS and the BGSE charging system. You will be responsible for developing, testing, and deploying software across these domains, will be a key contributor to their architecture and technical roadmap, and will provide technical guidance to other engineers on the team. Since this software must meet stringent safety requirements, your code will be held to high safety and regulatory standards — it will fly on real aircraft and charge them at real vertiports. Apply if you're excited about taking responsibility for the software at the center of commercial electric aviation's energy systems.


Responsibilities

You will be responsible for designing and implementing the embedded C++ software that runs on our aircraft battery management system and battery ground support equipment, and for advancing these software areas: contributing to their architecture and roadmaps alongside the software lead, translating complex multi-domain problems into well-scoped workstreams, and providing technical guidance to other engineers through design reviews, code reviews, and mentorship. You'll also collaborate with systems engineers, battery engineers, algorithm engineers, and hardware designers to author software requirements and integrate complex systems. You will be involved in all facets of our software design and development.

  • Develop, test, and verify safety-critical embedded C++ software for the aircraft battery management system: battery monitoring and protection functions, fault detection and diagnostics, and low-level software interfacing with battery monitoring circuitry.
  • Develop, test, and optimize embedded C++ software across the BGSE charger's domains, including electrical and power control, thermal management, safety functions, and communications.
  • Integrate algorithms developed by Joby's algorithm teams into production embedded C++ software, partnering closely on interfaces, performance, and verification.
  • Contribute substantially to the software architecture and technical roadmap across the BMS and BGSE areas, in close partnership with the software lead — proposing architecture and design directions, identifying opportunities, scoping workstreams, and helping keep development on schedule.
  • Develop the software that connects the charger, the aircraft battery, and Joby's backend infrastructure, ensuring robust and reliable data exchange — including the charge control interactions between aircraft and ground systems.
  • Define and maintain software interfaces with aircraft-side, hardware, algorithm, and backend teams.
  • Provide technical guidance to other engineers: design and code reviews, mentorship, and establishing team standards for testing, automation, and release practices.
  • Work with cross-functional teams (battery cell and pack, electrical, thermal, systems, aircraft software, operations) to decompose system requirements into software requirements and refine operational constraints.
  • Ensure software meets certification standards through rigorous documentation, verification (including software- and hardware-in-the-loop testing), and compliance activities.
  • Debug complex issues across the hardware/software boundary on live high-voltage systems — in the lab, on the aircraft, and in the field at operational sites.
Required
  • Bachelor's degree in Computer Science, Electrical Engineering, Robotics, or a related STEM field and 8+ years of relevant experience, OR Master’s Degree and 6+ years of experience, OR PhD and 3+ years of experience 
  • Expert-level modern C++ and real-time operating systems and/or embedded Linux.
  • Has taken a problem statement or area, developed it into a project or roadmap, and delivered — with multiple embedded software projects seen through to completion.
  • Deep understanding of microcontroller/microprocessor architectures and hands-on experience debugging embedded targets.
  • Networking and communications experience (Ethernet/UDP/TCP, CAN).
  • Experience providing technical guidance to other engineers through design/code review and mentorship.
  • Experience with git, CI/CD, and automated testing (unit, integration, or HIL).
  • Experience developing to formal requirements for safety-critical or high-reliability systems.
  • Prior experience with Python.
  • Strong communication and documentation skills.
Desired
  • Familiarity with the following:
    • EV charging systems / EVSE (DC fast charging, CCS, ISO 15118, OCPP, MCS)
    • Battery systems and BMS (state-of-charge/state-of-health estimation, charge algorithms)
    • High voltage systems
    • Thermal management and liquid cooling control
    • Aviation software standards (DO-178C, ARP4754A)
    • Linux
  • Experience thriving in a fast-paced, quick-iteration hardware environment.
Additional Information

Compensation at Joby is a combination of base pay and Restricted Stock Units (RSUs). The target base pay for this position is $155,900 - $227,300/yr. The compensation package will be determined by job-related knowledge, skills, and experience.

Joby also offers a comprehensive benefits package, including paid time off, healthcare benefits, a 401(k) plan with a company match, an employee stock purchase plan (ESPP), short-term and long-term disability coverage, life insurance, and more.


Joby is an Equal Opportunity Employer

Skills Required

  • Bachelor’s degree in Computer Science, Electrical Engineering, Robotics, or related STEM field with 8+ years of relevant experience; or master’s degree with 6+ years; or PhD with 3+ years
  • Expert-level modern C++ experience
  • Experience with real-time operating systems and/or embedded Linux
  • Multiple embedded software projects delivered through completion, including project or roadmap development
  • Deep understanding of microcontroller and microprocessor architectures
  • Hands-on experience debugging embedded targets
  • Networking and communications experience with Ethernet, UDP, TCP, and CAN
  • Experience providing technical guidance through design reviews, code reviews, and mentorship
  • Experience with Git, CI/CD, and automated unit, integration, or hardware-in-the-loop testing
  • Experience developing to formal requirements for safety-critical or high-reliability systems
  • Prior experience with Python
  • Strong communication and documentation skills
  • Familiarity with EV charging systems, EVSE, DC fast charging, CCS, ISO 15118, OCPP, or MCS
  • Familiarity with battery systems, BMS, state-of-charge or state-of-health estimation, and charge algorithms
  • Familiarity with high-voltage systems
  • Familiarity with thermal management and liquid cooling control
  • Familiarity with aviation software standards DO-178C and ARP4754A
  • Familiarity with Linux
  • Experience in a fast-paced, quick-iteration hardware environment

Joby Aviation Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Joby Aviation and has not been reviewed or approved by Joby Aviation.

  • Wellbeing & Lifestyle Benefits Wellbeing perks are positioned as a meaningful part of the total package, including free daily meals and access to an on-site gym. These amenities are portrayed as reducing day-to-day costs and friction, making the overall rewards feel richer for some roles and sites.
  • Retirement Support Retirement support is described as comprehensive, including a 401(k) plan with a company match. Ownership-oriented savings options like an ESPP are also included alongside retirement benefits.
  • Equity Value & Accessibility Equity participation is a prominent component of total rewards through RSUs and an ESPP, making upside potential a core part of compensation design. This structure is framed as especially attractive when equity is valued as part of overall pay competitiveness.

Joby Aviation Insights

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The Company
HQ: Santa Cruz, CA
946 Employees
Year Founded: 2009

What We Do

Joby is a California-based company building quiet, all-electric aircraft to connect people like never before. With up to 150 miles of range and the ability to take off and land vertically, the Joby aircraft will change the way we move while reducing the acoustic and climate footprint of flight.

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