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OptiSol Technologies Interview Preparation

Medium-Hard

AI & software development services · Chennai

OptiSol Technologies is a AI & software development services company hiring interns and freshers in Coimbatore, Tamil Nadu.

280+ questions4 rounds5 expert tipshttps://www.optisolbusiness.com/

About OptiSol Technologies

OptiSol Business Solutions is an India-based technology services company specialising in generative AI, machine learning, and custom web and mobile application development for global clients. It operates development centres in India, including Chennai, Madurai, and Coimbatore, alongside global offices across the US, UK, Australia, Ireland, and Dubai. The firm focuses on digital transformation and intelligent automation engagements.

Interview Rounds4

1
Online Assessment60–90 min

2–3 DSA coding problems on HackerRank, CodeSignal, or company platform

2
Technical Interview I45–60 min

Data structures & algorithms — arrays, trees, graphs, dynamic programming

3
Technical Interview II45–60 min

System design or low-level design — scalability, APIs, databases

4
HR / Culture Round30 min

Career goals, teamwork, strengths/weaknesses, role expectations

Practice Questions10

Key Topics

  • Data Structures & Algorithms150q
  • System Design50q
  • Object-Oriented Design40q
  • SQL & Databases25q
  • CS Fundamentals (OS, Networking)25q

Expert Tips

  • Practice LeetCode easy and medium problems before the OA — focus on arrays, strings, trees, and graphs.
  • For system design, use the RESHADED framework: Requirements, Estimation, Storage, High-level design, APIs, Detailed design, Evaluation.
  • Prepare 3–4 STAR stories covering: a challenge you solved, a time you worked in a team, a project you owned end-to-end.
  • After every coding solution, proactively state the time and space complexity — interviewers expect it.
  • Study common CS fundamentals: process vs thread, TCP vs UDP, REST vs GraphQL, SQL indexing, CAP theorem.