Unbxd Solutions Engineer Interview: Rounds, Questions and Preparation

What the job involves

A Solutions Engineer in Indian SaaS and B2B products acts as the technical bridge between sales and product, helping prospective customers understand how the software solves their business problems. Day to day, they run product demos, design integration architectures, respond to technical RFPs, and support pilots or proof-of-concepts. They also relay customer feedback to product teams and ensure smooth handoffs to implementation or customer success.

Role and company knowledge

1. 1

   What do you understand about the day-to-day responsibilities of a Solutions Engineer at a SaaS company like Unbxd?

   Mention demos, technical discovery, POC support, RFP responses, and working with sales and product teams. Show you know it is not pure coding or pure sales.

2. 2

   How does a Solutions Engineer differ from a Sales Engineer or a Customer Success Manager in a B2B SaaS setup?

   Focus on the pre-sales technical ownership, proof-of-concept design, and integration guidance. Contrast with post-sales account management or pure quota-carrying sales.

3. 3

   Why do you want to work in the Indian SaaS and B2B product sector, and why this role rather than a pure software development role?

   Connect your interest in technology with customer interaction and problem-solving. Mention the growth of Indian SaaS and the variety of industries you get exposed to.

4. 4

   What do you know about Unbxd or similar product discovery and search personalisation platforms?

   Explain that these platforms help e-commerce and B2B sites improve search relevance, merchandising, and personalised recommendations. Avoid claiming specific internal practices.

Technical fundamentals

1. 5

   Explain the difference between REST and SOAP APIs, and when you would recommend one over the other to a customer.

   Cover payload formats, protocol, performance, and ease of use. Recommend REST for most modern SaaS integrations and SOAP for legacy or strict contract needs.

2. 6

   How would you debug a customer's API request that returns a 401 or 403 error during a proof-of-concept?

   Check authentication tokens, API keys, permissions, and headers. Suggest log inspection and reproducing the call with a tool like Postman.

3. 7

   Write a basic SQL query to find the top 5 products by number of orders from an orders table.

   Use GROUP BY product_id, COUNT order_id, ORDER BY count DESC, LIMIT 5. Explain that you would join with a products table to get names.

4. 8

   What are webhooks and how are they different from polling an API?

   Explain that webhooks push data in real time when an event occurs, while polling repeatedly checks for changes. Mention use cases like order updates or inventory sync.

Practical scenarios

1. 9

   A potential customer says their product catalogue has 50,000 SKUs and search results are slow. How would you approach a proof-of-concept to solve this?

   Talk about data ingestion, indexing, query performance, and caching. Suggest a phased POC with sample data and measurable success criteria like latency and relevance.

2. 10

   During a demo, the customer asks a feature question you do not know the answer to. What do you do?

   Stay calm, acknowledge the question, and commit to following up with accurate information. Never guess or overpromise. Show you would loop in product or engineering if needed.

3. 11

   How would you design an integration between a customer's e-commerce platform and a search personalisation service?

   Cover data flow: product feed, user events, API calls for search and recommendations. Mention authentication, error handling, and fallback behaviour.

4. 12

   The customer's engineering team says your API rate limits are too low for their traffic. How do you handle this?

   Understand their peak traffic, explain current limits, and explore options like batching, caching, or a custom plan. Coordinate with internal teams before promising changes.

Behavioural and HR

1. 13

   Tell me about a time you explained a technical concept to someone non-technical. How did you ensure they understood?

   Use a simple analogy, check for understanding, and avoid jargon. Show empathy and patience.

2. 14

   Describe a situation where you had to learn a new technology quickly for a project or assignment.

   Highlight your learning process: documentation, hands-on practice, and asking for help. Mention the outcome and what you would do differently.

3. 15

   How would you handle a customer who is frustrated because a promised feature is not working during a pilot?

   Listen actively, apologise for the inconvenience, and focus on a solution. Set realistic expectations and keep them updated.

4. 16

   Where do you see yourself in three years in a Solutions Engineer career path?

   Show interest in deepening technical and customer-facing skills, possibly moving to senior SE or solutions architect. Align with the company's growth.