Atomberg Technologies Embedded Software Engineer Interview Experience (2025)

I have a degree in Mechanical Engineering. I work at an embedded software company now. Here is the unglamorous version of how that happened.

• Role: Embedded Software Engineer
• Location: Mumbai, Maharashtra
• Year: 2025
• Timeline: 3 weeks, application to offer
• Rounds: Online Assessment → Technical Round 1 → Technical Round 2 → Managerial Round
• Difficulty: Hard — requires hardware-software integration knowledge
• Outcome: Offer accepted
• Compensation: ₹16 LPA base / ₹20 LPA total comp

Why Atomberg?

Atomberg is known for energy-efficient appliances and smart home products. They build embedded systems for BLDC motors, IoT connectivity, and appliance control. The intersection of hardware and software appealed to me.

Round 1: Online Assessment

Format: 90-minute HackerRank-style assessment Sections: C programming (30 min), Microcontrollers (30 min), RTOS concepts (30 min)

The assessment covered C programming, microcontrollers, RTOS concepts, and basic electronics. The C questions focused on pointers, memory management, and bit manipulation — critical for embedded systems.

What they were testing: C fundamentals, embedded systems knowledge, and ability to work with low-level concepts. They wanted to ensure I had the technical foundation for embedded development.

No interviewer - this was a self-paced assessment.

Round 2: Technical Round 1 — C & Microcontrollers

Format: 60-minute video call with shared coding Interviewer: Senior Embedded Engineer Duration: 55 minutes

The interviewer asked about microcontroller vs microprocessor differences, interrupt handling, memory mapping, communication protocols, and register manipulation.

What they were testing: Deep understanding of embedded systems concepts, C programming for embedded, and hardware-software integration. They wanted to see if I could work at the hardware-software boundary.

Interviewer approach: Technical and probing. He kept asking "how" and "why" questions to test fundamental understanding beyond surface-level knowledge.

Round 3: Technical Round 2 — RTOS & System Design

Format: 60-minute whiteboard discussion Interviewer: Embedded Tech Lead Duration: 50 minutes

This round focused on RTOS concepts and firmware architecture design for a smart ceiling fan with remote and app connectivity.

What they were testing: RTOS knowledge, system design for embedded applications, and ability to architect layered firmware. They wanted to see if I could design maintainable embedded systems.

Interviewer approach: Collaborative and design-focused. He built on my design, suggesting improvements and explaining Atomberg's architectural patterns.

Round 4: Managerial Round

Format: 45-minute discussion Interviewer: Engineering Manager Duration: 40 minutes

The manager asked about my transition from mechanical to embedded software and my learning journey.

What they were testing: Learning agility, self-motivation, and cultural fit for a product company. They wanted to see if I had the drive to succeed in a new domain.

Interviewer approach: Supportive and interested. He shared stories about other career switchers at Atomberg, making me feel welcome despite my non-traditional background.

The Insider Insight

Atomberg values hands-on hardware experience. They prefer candidates who have worked with actual microcontrollers and built prototypes over those with only theoretical knowledge. If you have hobby projects, bring them up.

Compensation

The offer was ₹16 LPA base with a 25% performance bonus, totaling around ₹20 LPA. For Mumbai in 2025, this is competitive for embedded roles at product companies.

Frequently Asked Questions

How hard is the Atomberg Embedded Software Engineer interview? The difficulty is hard. They expect strong C programming, microcontroller knowledge, and RTOS understanding.

How long does the Atomberg interview process take? Expect 3 weeks from application to offer. The process is thorough for embedded roles.

What microcontrollers does Atomberg use? They use ARM Cortex-M series microcontrollers and have experience with ESP32 for IoT applications.

How much do Embedded Software Engineers make at Atomberg? Embedded engineers can expect ₹16–20 LPA total comp in Mumbai. Senior engineers earn ₹22–28 LPA.