Senior Firmware Engineer

Senior Firmware Engineer

Exponent Energy · Bengaluru, India · Full-time · Posted 2026-03-20

Workplace: on_site

Department: RnD Engineering

Description

You’ll be working with the product and engineering team.

This team runs on coffee with an infectious passion for building products that have never been built before. Our Flexible Energy Stack consists of the e^pack (battery pack) and e^pump (charging station) which together unlock 15-minute rapid charging.

Our philosophy: Break. Believe. Build

Break stuff. Break assumptions. Break the thumb rule.

Believe in the team. Believe in the process. Believe through failures.

Build fast. Build passionately. Build to simplify.

What you will do

Fast charging a battery pack requires the charger and the battery to communicate with each other perfectly and work in sync. This is achieved when 3 things come together:

• Great battery pack design
• Reliable & accurate hardware
• Innovative & efficient firmware and algorithms (battery and charging algorithms)

Software and hardware are critical to the efficient working of a well-designed battery pack. At Exponent, we take our software very seriously, and to complement it, we build our own hardware to the highest standards – fully in-house.

As a senior Firmware Engineer, you will be building the safe, reliable, and modular FW tech stack responsible for charging thousands of vehicles within 15 minutes.

You will work closely with hardware (it’s like a dance – you need both partners to be in sync with each other), utilizing data to build Algos to boost the Battery and Charger performance

Responsibilities

• Define FW architecture - select HW, device optimal HAL layers, enable features (OTA, UDS, et al), and define FW blocks
• Develop Algorithms - design application layer with state machines and algorithms to process data and compute critical parameters like Sox
• Take code to production - Design, development, validation, and deployment in the field; debugging and diagnostic SOPs, service manual
• Reliability - Understanding and implementation of safety and reliability of firmware, FMEA, and Code and Risk reviews

The ideal candidate requires

• Hands-on experience and proven excellence in the delivery of production codes for high-volume embedded devices with 3 to 5 yrs of relevant experience
• Strong design and development skills in embedded C/C++ along with RTOS/Linux and some scripting and automation (Python/Shell)
• Strong knowledge of embedded hardware, ARM and DSP microcontrollers, ADCs, GPIOs, and communication protocols USB / CAN 2.0 / CANFD / SPI / UART / ISOTP
• Experience working with analysis tools like LDRA or Polyspace for Static Code Analysis
• Have an understanding of working with cross-functional teams in an Agile environment, product lifecycle for firmware (SDLC), and version control (Git)
• Understanding of automotive standards like MISRA C, ISO26262

We are looking for builders with a certain mindset: Build. Fail. Learn. Repeat.

What matters more

• Quality of work
• Approach towards problem-solving
• Dissatisfaction towards mediocre work
• Resilient attitude to bounce back after failing
• 3+ years of experience

About Us

Exponent simplifies energy for EVs.

Co-founded by Arun Vinayak (Ather Energy's Founding Partner & Former Chief Product Officer) and Sanjay Byalal (Former hardware strategic sourcing and cell strategy lead, Ather and Former Supply Chain Lead, HUL), Exponent focuses on solving two sides of the energy problem by building the e^pump (charging station) and e^pack (battery pack) which together unlock 15-min rapid charging. The 200-strong team of passionate builders has a ton of EV experience and is currently looking for more builders to join one of the best EV teams in India to build & scale Exponent.

Apply

Apply at Exponent Energy

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