Delta6Labs Fintech Pvt Ltd Interview Questions and Answers

The first round was a coding test, which was outsourced to an external vendor. I was asked 2 basic DSA questions, and there was discussions around the time and space complexity, and scope of optimizing the solutions. Post that there were a few questions around Spring Boot features and basic system design. The interviewer was professional throughout the interview, and the interview process felt more like a discussion, as compared to the standard interview process.

There was another round of coding - this time conducted by the organization itself. It consisted of a medium level DSA question on stacks. I wrote the code on my personal IDE and executed it there itself. The interviewer discussed about the possible edge cases and how I would deal with them. Post solving the question I was asked about my previous projects.

Q1. Discuss in detail about a scenario where a challenging production issue was handled.
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Q2. What are your responsibilities as a senior / team lead in the current organization?
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Q3. How did you handle conflicts with junior engineers and reporting managers?
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This was the final round where the discussion was largely around system design and HLD. It started off with questions are system design patterns and concepts. Then I was asked to design a booking design, with discussions around concurrency control and transaction management.

Q1. Things you have worked on in the past
Ans. 
I have worked on developing and launching new mobile applications for a tech startup.
• Led cross-functional teams to define product requirements

• Conducted market research and user testing to inform product decisions

• Worked closely with designers and engineers to bring products to market

• Managed product roadmap and prioritized features based on user feedback
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Take home assignment on a relevant problem statement for the organization

Q1. Discussion on the assignment
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Q1. Details of your salary and negotiation
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Q1. Asked me to give a self introduction
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Q2. Asked me about college activities
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Q1. Diff between react and jQuery
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React is a modern JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library for DOM manipulation.
• React is component-based, promoting reusability and modularity.

• React uses a virtual DOM for efficient updates, while jQuery directly manipulates the DOM.

• React is declarative, making it easier to reason about the UI, while jQuery is imperative.

• React is typically used for single-pa...read more
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Q1. Sql, excel, python, g-sheet
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Q2. Window function
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Q3. Lookup, pivot, graphs, sumif, countif
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Q4. Puzzles, fake coin, 25 horses,
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Q5. Basic business understanding
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3 dsa questions medium level

Q1. 2 medium level dp questions based on string and stocks
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Q2. One hard question based on graph
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Q1. Hr questions and java , springboot questions etc
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Asked to write a bank application - which includes adding,removing,transferring of money

Q1. About node js core
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Q1. How will you prioritize testing ?
Ans. 
I prioritize testing based on criticality, impact, dependencies, and risks involved.
• Identify critical functionalities and prioritize testing for them first

• Consider impact on end users and prioritize testing for high impact areas

• Take into account dependencies between different modules or components

• Assess risks involved and prioritize testing for high-risk areas

• Use risk-based testing approach to prioritize test cases
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Q2. Test cases for Landline
Ans. 
Test cases for Landline phone functionality
• Test dialing a number and making a call

• Test receiving a call and answering it

• Test call waiting functionality

• Test call forwarding feature

• Test voicemail functionality
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Q1. SQL question on joins and subqueries?
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Q2. Earlier project questions ?
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