Location: Delhi, India (On-site)

About Kimbal:

Kimbal is at the forefront of building a smarter and cleaner energy future. We enable utilities to modernize and scale through cutting-edge smart metering, RF-based connectivity, cloud-native platforms, and advanced energy management solutions. As the energy landscape evolves rapidly, we empower our partners to future-proof their networks with unmatched reliability, agility, and intelligence.

In a fast-paced and innovation-driven environment, we design and deliver solutions that address urgent industry needs while shaping long-term transformation. Our vision is to create resilient, affordable, and adaptable power grids that thrive in complex energy ecosystems—driving meaningful progress toward carbon neutrality and sustainable growth.

Kimbal Private Limited (formerly Crystal) is the fastest-rising Indian energy-tech enterprise, building tools to modernize the distribution grid since 2011.

Detailed Job Description:

Embedded Software Engineer with strong experience in Embedded C, Zephyr RTOS, and Linux-based systems. The role involves developing firmware for embedded devices, building reusable SDKs and platform components, integrating with gateway systems, and supporting large-scale IoT deployments.

Key Responsibilities

• Develop and maintain embedded firmware in C for microcontroller-based devices.
• Work with Zephyr RTOS to design and implement real-time embedded applications.
• Design, develop, and maintain SDKs, APIs, and reusable software components for internal teams and external integrations.
• Develop and debug Linux-based gateway or edge applications interacting with embedded devices.
• Interface with hardware peripherals such as SPI, UART, I2C, GPIO, and radio modules.
• Perform system integration, debugging, and performance optimization.
• Support testing, validation, and field issue debugging.
• Collaborate with cross-functional teams including firmware, hardware, networking, and DevOps teams.
• Prepare technical documentation, developer guides, and integration support material for SDK and firmware usage.

Required Skills

• Strong proficiency in Embedded C programming.
• Hands-on experience with Zephyr RTOS or similar RTOS.
• Experience in SDK / platform development for embedded systems.
• Experience working with Linux-based embedded systems or gateway applications.
• Knowledge of embedded communication interfaces such as SPI, UART, I2C, and GPIO.
• Experience with debugging embedded systems, firmware, and integration issues.
• Familiarity with Git and collaborative development workflows.
• Knowledge of OTA/FOTA firmware updates

Good to Have

• Experience with wireless communication or IoT networking.
• Exposure to embedded networking stacks, middleware, or device drivers.
• Experience in supporting third-party integrations and developer enablement.
• BLE experience will be an added advantage.

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