Indigo Software Engineer Interview Questions + Guide in 2024

Based in Woburn, Massachusetts, Indigo Technologies is pioneering the next generation of electrified mobility through its patented SmartWheel hub motors. Combining propulsion and active suspension, Indigo’s innovative platform offers unparalleled ride comfort, handling, and safety. The company fosters a diverse engineering environment, enhancing innovation through varied backgrounds and experiences.

As a Software Engineer at Indigo, you will join a dynamic team of professionals focused on developing, testing, and maintaining firmware for their cutting-edge vehicle systems. Your role will involve improving ARM-based microcontroller firmware, troubleshooting at various levels, and implementing communication interfaces.

In this guide, we’ll explore the company’s interview process, typical Indigo software engineer interview questions, and useful tips. Let’s get started!

Recruiter/Hiring Manager Call Screening

If your CV is among the shortlisted few, a recruiter from the Indigo Talent Acquisition Team will contact you and verify key details like your experiences and skill level. Behavioral questions may also be part of the screening process.

In some cases, the Indigo Software Engineer hiring manager stays present during the screening round to answer your queries about the role and the company itself. They may also indulge in surface-level technical and behavioral discussions.

The whole recruiter call should take about 30 minutes.

Technical Virtual Interview

Successfully navigating the recruiter round will present you with an invitation for the technical screening round. Technical screening for the Indigo Software Engineer role is usually conducted through virtual means, including video conference and screen sharing. Questions in this 1-hour long interview stage may revolve around common coding problems and system design.

In the case of software engineer roles, technical questions will include leetcode-style problems and system design. Apart from these, interviewers may also assess your problem-solving approach and coding proficiency.

Onsite Interview Rounds

Followed by a second recruiter call outlining the next stage, you’ll be invited to attend the onsite interview loop. Multiple interview rounds will be conducted during your virtual onsite day, varying with the role. In these interviews, you may interact with the hiring manager, the product/business team members, and other software engineers. Your technical prowess, including live coding, system design, and collaborative problem-solving capabilities, will be evaluated against the finalized candidates.

If you were assigned take-home exercises, you may also be invited to a discussion or presentation round during the on-site interview for the software engineer role at Indigo.

Typically, interviews at Indigo vary by role and team, but commonly software engineer interviews follow a fairly standardized process across these question topics.

1. How would you analyze noisy and volatile asset price data to ensure accuracy?

You are working at a global trading company analyzing the price of a particular asset over time. The dataset is noisy, volatile, and not guaranteed to be completely accurate. How would you analyze this data to ensure there aren’t any discrepancies?

2. How would you set up an A/B test for button color and position changes in a sign-up funnel?

A team wants to A/B test multiple changes in a sign-up funnel. For example, they want to see if changing a button from red to blue and/or from the top to the bottom of the page will increase click-through rates. How would you set up this test?

3. How would you verify that an Instagram user is a high school student attending the school represented by their sticker?

Instagram is releasing a new feature for high schoolers, allowing users to identify their school and receive a sticker for their profile. How would you verify that a user is actually a high school student attending the school, as represented by their sticker?

4. Create a function digit_accumulator to sum every digit in a floating-point number string.

5. What is the probability that a red marble was pulled from Bucket #1?

You have two buckets with different distributions of red and black marbles. Your friend pulls a red marble from one of the buckets. Calculate the probability that it was pulled from Bucket #1.

6. What are time series models and why are they needed over simpler regression models?

Explain what time series models are and discuss why they are necessary when simpler regression models might not suffice.

7. How would you determine if the difference between this month and the previous month is significant?

You have a time series dataset grouped monthly for the past five years. Describe how you would assess whether the difference between this month and the previous month is statistically significant.

You should plan to brush up on any technical skills and try as many practice interview questions and mock interviews on Interview Query as possible. A few tips for acing your Indigo interview include:

• Understand Indigo’s Technology: Knowing Indigo’s tech stack and product offering can be hugely beneficial. Study Indigo’s systems and understand how your background can contribute to these areas.
• Be Prepared for System Design: Indigo interviews heavily incorporate system design questions. Practice designing scalable and efficient systems, and be ready to discuss your thought process.
• Showcase Your Experience: During behavioral questions, relate your answers to your past projects and experiences that align with Indigo’s needs. Be specific about your role, the challenges faced, and how you worked to overcome them.

What is the average salary for a Software Engineer at Indigo?

What skills are required for the Software Engineer position at Indigo?

For an Embedded Software Engineer position at Indigo, required skills include high-level programming capabilities in C, firmware development, troubleshooting of electrical circuits, and developing communication interfaces between vehicle systems. Experience with multithreaded applications, secure coding standards, and various debugging and continuous integration tools is highly valuable.

What should I know about Indigo Technologies as a company?

Indigo Technologies is focused on developing the next generation of electrified mobility with its patented SmartWheel hub motors. They offer competitive salaries, stock options, flexible hours, and a 401K plan. Indigo supports a diverse engineering team that fosters innovation through a variety of backgrounds and experiences.

Despite the lengthy interview process, Indigo remains an innovative company dedicated to advancing electrified mobility and engineering excellence, and we hope that this interview guide will help you succeed.

Good luck with your interview!