Eruvaka Technologies Software Engineer Interview Guide

The 60-second brief

As a Software Engineer at Eruvaka Technologies, you play a pivotal role in developing cutting-edge solutions that drive innovation in the agricultural technology sector. Your contributions directly influence the performance and efficiency of our products, helping farmers optimize their operations through data-driven insights. This role is not just about coding; it encompasses problem-solving, collaboration, and creativity, making it essential for maintaining Eruvaka's reputation as a leader in smart farming solutions. In your position, you will engage with teams focused on various aspects of our product offerings, including IoT applications and real-time data analytics. The complexity of these projects, combined with the scale at which we operate, offers a unique and fulfilling challenge.

This guide is scoped to a Software Engineer candidate at Eruvaka Technologies.

Focus areas

• Data Structures & Algorithms (DSA)
• Algorithmic Coding
• Technical Interview

The Eruvaka Technologies interview process

Eruvaka Technologies candidates report 3 rounds over 3-5 weeks. The stages below are what candidates describe, not a published process.

Technical Interview

Candidates will face coding challenges, data structures and algorithms questions, and domain-specific inquiries.

What to demonstrate

• Candidates will face coding challenges, data structures and algorithms questions, and domain-specific inquiries
• Depth in Data Structures & Algorithms (DSA)

How to prepare

• Answer aloud and timed: What data structures would you use to implement a priority queue?
• Answer aloud and timed: Explain the concept of object-oriented programming and its principles.

CEO Interview

This interview may include technical questions as the CEO is involved in technical aspects of projects.

What to demonstrate

• This interview may include technical questions as the CEO is involved in technical aspects of projects
• Depth in Data Structures & Algorithms (DSA)

How to prepare

• Answer aloud and timed: Can you describe the process of normalization in SQL and why it's important?
• Answer aloud and timed: How do you optimize a SQL query for performance?

HR Interview

Final interview focusing on behavioral aspects and cultural fit within the company.

What to demonstrate

• Final interview focusing on behavioral aspects and cultural fit within the company
• Depth in Data Structures & Algorithms (DSA)

How to prepare

• Answer aloud and timed: What are the differences between REST and GraphQL APIs?
• Answer aloud and timed: How would you approach debugging a recurring issue in a production environment?

Where candidates lose points

Practice coding problems

Regularly solve coding challenges on platforms like LeetCode or HackerRank to sharpen your skills.

Understand Eruvaka's products

Familiarize yourself with the company's technologies and innovations to demonstrate your enthusiasm during interviews.

Prepare questions for interviewers

Show your interest by asking insightful questions about the company's direction and team dynamics.

Reflect on past experiences

Be ready to discuss your previous work, focusing on specific examples that highlight your skills and contributions.

Questions & practice

Write a function to reverse a linked list.

Medium · Coding / Algorithms

Approach

1. Restate the input: its shape, its size, and what is guaranteed about it.
2. Name the brute-force solution and its complexity before improving on it.
3. Choose the data structure from the access pattern, not from familiarity.
4. State the target complexity and say which constraint rules the naive version out.

Follow-up

• How does this change if the input no longer fits in memory?
• What is the worst case, and how likely is it on real data?

How would you find the longest substring without repeating characters in a string?

Medium · Coding / Algorithms

Approach

1. Restate the input: its shape, its size, and what is guaranteed about it.
2. Name the brute-force solution and its complexity before improving on it.
3. Choose the data structure from the access pattern, not from familiarity.
4. State the target complexity and say which constraint rules the naive version out.

Follow-up

• How does this change if the input no longer fits in memory?
• What is the worst case, and how likely is it on real data?

Explain how the quicksort algorithm works and its time complexity.

Medium · Coding / Algorithms

Approach

1. Restate the input: its shape, its size, and what is guaranteed about it.
2. Name the brute-force solution and its complexity before improving on it.
3. Choose the data structure from the access pattern, not from familiarity.
4. State the target complexity and say which constraint rules the naive version out.

Follow-up

• How does this change if the input no longer fits in memory?
• What is the worst case, and how likely is it on real data?

Can you describe the process of normalization in SQL and why it's important?

Medium · Technical / Domain Questions

Approach

1. Name the grain you start from and join outward from it.
2. Check whether any join is one-to-many before aggregating, or the sums inflate.
3. Say which index the query would use, and what makes it unusable.
4. Handle the rows that do not match: that is usually the actual question.

Follow-up

• How does the query change if that join becomes one-to-many?
• What happens to this when the table is ten times larger?

How do you optimize a SQL query for performance?

Medium · Technical / Domain Questions

Approach

1. Name the grain you start from and join outward from it.
2. Check whether any join is one-to-many before aggregating, or the sums inflate.
3. Say which index the query would use, and what makes it unusable.
4. Handle the rows that do not match: that is usually the actual question.

Follow-up

• How does the query change if that join becomes one-to-many?
• What happens to this when the table is ten times larger?

What data structures would you use to implement a priority queue?

Medium · Technical / Domain Questions

Approach

1. Clarify what is being asked and what a complete answer contains.
2. State your assumptions explicitly before working the problem.
3. Say what you would check first and why it is the highest-information step.
4. Work from the requirement backwards to the design.

Follow-up

• What assumption would you test first?
• How would you know your answer was wrong?

Explain the concept of object-oriented programming and its principles.

Medium · Technical / Domain Questions

Approach

1. Clarify what is being asked and what a complete answer contains.
2. State your assumptions explicitly before working the problem.
3. Say what you would check first and why it is the highest-information step.
4. Work from the requirement backwards to the design.

Follow-up

• What assumption would you test first?
• How would you know your answer was wrong?

What are the differences between REST and GraphQL APIs?

Medium · Technical / Domain Questions

Approach

1. Say who the caller is and what they do when the call fails halfway.
2. Define the identity of a request so a retry cannot double-apply it.
3. Separate accepted, pending, failed and confirmed; they are different facts.
4. Design the error taxonomy before the success shape; callers branch on it.

Follow-up

• What happens if the caller retries after a timeout?
• How does a client discover it is on an old version of this contract?

If given a legacy codebase, how would you go about improving it?

Medium · Problem-Solving / Case Studies

Approach

1. Clarify what is being asked and what a complete answer contains.
2. State your assumptions explicitly before working the problem.
3. Say what you would check first and why it is the highest-information step.
4. Work from the requirement backwards to the design.

Follow-up

• What assumption would you test first?
• How would you know your answer was wrong?

How would you approach debugging a recurring issue in a production environment?

Medium · Problem-Solving / Case Studies

Approach

1. Establish what changed and when, before forming any theory.
2. Pick a bisection that eliminates candidates whichever way it turns out.
3. Check the instrumentation before believing the symptom.
4. Separate the trigger from the cause; the deploy is rarely the bug.

Follow-up

• What would you look at first, and what would it rule out?
• How would you tell a cause from a coincidence here?

Suggested practice checklist

Built from the rounds and topics Eruvaka Technologies candidates report.

Day 1 — Map the Eruvaka Technologies loop

• Write out the reported sequence: Technical Interview, CEO Interview, HR Interview.
• For each round, write one sentence on what it is judging, from the description above, and mark the one you are least ready for.

Deliverable: A one-page map of the 3 reported rounds, with the weakest marked.

Day 2 — Work Data Structures & Algorithms (DSA)

• Spend the session on Data Structures & Algorithms (DSA), which Eruvaka Technologies candidates report being tested on.
• Write one worked example in Data Structures & Algorithms (DSA) and time yourself on it.

Deliverable: One timed worked example in Data Structures & Algorithms (DSA).

Day 3 — Work Algorithmic Coding

• Spend the session on Algorithmic Coding, which Eruvaka Technologies candidates report being tested on.
• Write one worked example in Algorithmic Coding and time yourself on it.

Deliverable: One timed worked example in Algorithmic Coding.

Day 4 — Work Technical Interview

• Spend the session on Technical Interview, which Eruvaka Technologies candidates report being tested on.
• Write one worked example in Technical Interview and time yourself on it.

Deliverable: One timed worked example in Technical Interview.

Day 5 — Answer out loud: Technical / Domain Questions

• Answer aloud, timed: What data structures would you use to implement a priority queue?
• Answer aloud, timed: Explain the concept of object-oriented programming and its principles.

Deliverable: Spoken answers to 2 reported Technical / Domain Questions question(s), under time.

Day 6 — Answer out loud: Problem-Solving / Case Studies

• Answer aloud, timed: How would you approach debugging a recurring issue in a production environment?
• Answer aloud, timed: Describe a time when you had to make a decision without complete data. What was your process?

Deliverable: Spoken answers to 2 reported Problem-Solving / Case Studies question(s), under time.

Day 7 — Answer out loud: Behavioral / Leadership

• Answer aloud, timed: Tell us about a time you worked on a team project. What was your role, and how did you contribute?
• Answer aloud, timed: How do you handle conflicts within a team?

Deliverable: Spoken answers to 2 reported Behavioral / Leadership question(s), under time.

Behavioural preparation

Behavioural rounds judge the decision you made and what it cost.

Describe a time when you had to make a decision without complete data. What was your process?

Medium · Problem-Solving / Case Studies

Approach

1. Pick a story where you made the decision, not one where you watched it.
2. State the situation in two sentences and spend the rest on the reasoning.
3. Give the blast radius: what could have broken, and what you measured.
4. Name the disagreement and how you resolved it with evidence.

Follow-up

• What would you do differently if you ran that again?
• How did you know your change caused the improvement?

Tell us about a time you worked on a team project. What was your role, and how did you contribute?

Medium · Behavioral / Leadership

Approach

1. Pick a story where you made the decision, not one where you watched it.
2. State the situation in two sentences and spend the rest on the reasoning.
3. Give the blast radius: what could have broken, and what you measured.
4. Name the disagreement and how you resolved it with evidence.

Follow-up

• What would you do differently if you ran that again?
• How did you know your change caused the improvement?

How do you handle conflicts within a team?

Medium · Behavioral / Leadership

Approach

1. Pick a story where you made the decision, not one where you watched it.
2. State the situation in two sentences and spend the rest on the reasoning.
3. Give the blast radius: what could have broken, and what you measured.
4. Name the disagreement and how you resolved it with evidence.

Follow-up

• What would you do differently if you ran that again?
• How did you know your change caused the improvement?

What motivates you to work in the technology sector, particularly in agricultural innovation?

Medium · Behavioral / Leadership

Approach

1. Pick a story where you made the decision, not one where you watched it.
2. State the situation in two sentences and spend the rest on the reasoning.
3. Give the blast radius: what could have broken, and what you measured.
4. Name the disagreement and how you resolved it with evidence.

Follow-up

• What would you do differently if you ran that again?
• How did you know your change caused the improvement?