MyInternships.in
Back to Interview Prep
J

Johnson Controls Interview Preparation

Medium-Hard

Information Technology · Pune

Your smart, healthy, sustainable building upgrades require minimal downtime – and sometimes so do our website updates. Meet Zachary, one of our 50,000 building experts who's helping ensure this campus is ready for students' return New capabilities to help reduce energy use, automate building operations and cut operating costs Johnson Controls heat pumps cut 2025 heating costs by 32%, emissions by 55% AI infrastructure is scaling fast. Improve cooling efficiency, manage thermal load, and maintain performance as power and capacity constraints increase. Critical environments require stable conditions. Maintain precise control, reduce operational risk, and ensure reliable performance across complex, high-demand systems. Energy costs are rising and demand is unpredictable. Reduce energy use, control costs, and maintain performance across buildings and portfolios. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.

280+ questions4 rounds5 expert tipshttps://jobs.johnsoncontrols.com

About Johnson Controls

Johnson Controls actively hires interns and freshers in Pune. Apply free on MyInternships.in.

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.