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66degrees Interview Preparation

Medium-Hard

Technology · India

We are a convergence of world-class engineers, architects, and strategists with a shared purpose: to guide enterprises through the age of AI and shape the future of work. Our vision is to be the catalyst for a future where every business operates as an intelligent enterprise—where data is a strategic asset, complexity is transformed into clarity, and autonomous systems unlock human potential to define the next era of growth and innovation. These five non-negotiable principles guide our behavior, our decisions, and our commitment to our clients and to each other. We are obsessed with our clients' success, measuring our own performance by the tangible, quantifiable business outcomes we help them achieve. We are committed to the relentless pursuit of technical mastery, ensuring our partners have access to world-class engineers and strategists who represent the highest standards of their craft. We believe collective success is the only success that matters, fostering a culture of collaboration that allows us to function as a seamless extension of our clients' teams, unified toward a shared goal. We embrace change with a solutions-first mindset, acting as a resilient and adaptable strategic partner capable of navigating any complexity to achieve results. We actively seek out the most ambitious and complex challenges, knowing they are the catalyst for the transformational breakthroughs and innovative work that deliver the greatest impact. Our journey is one of purposeful convergence, bringing together elite firms to create a single, powerful entity dedicated to building the Agentic Enterprise. This timeline marks the critical mergers and strategic decisions that transformed us into the leading AI, Data, and Cloud partner for the world's most ambitious organizations. Our name reflects that transformation: at 66°, invisible vapor condenses into a visible cloud, symbolizing how we turn the formless into something powerful and tangible. Cloudbakers and Qwinix merge and create one of the Google Cloud ecosystem’s largest solutions providers. Together, Cloudbakers and Qwinix provide clients an end-to end experience in professional and managed services. Moreover, Cloudbakers and Qwinix provide clients access to a global workforce that enables speed-to-market in a cost effective manner, with team members in the United States, Canada, Costa Rica, and India. Cloudbakers, one of the three companies that would become 66degrees, is founded by Mitch Greenwald in Chicago, Illinois. Cloudbakers would become a Google Cloud Premier Partner and a leader in providing Google Cloud

280+ questions4 rounds5 expert tipshttps://www.66degrees.com

About 66degrees

We are a convergence of world-class engineers, architects, and strategists with a shared purpose: to guide enterprises through the age of AI and shape the future of work. Our vision is to be the catalyst for a future where every business operates as an intelligent enterprise—where data is a strategic asset, complexity is transformed into clarity, and autonomous systems unlock human potential to define the next era of growth and innovation. These five non-negotiable principles guide our behavior, our decisions, and our commitment to our clients and to each other. We are obsessed with our clients' success, measuring our own performance by the tangible, quantifiable business outcomes we help them achieve. We are committed to the relentless pursuit of technical mastery, ensuring our partners have access to world-class engineers and strategists who represent the highest standards of their craft. We believe collective success is the only success that matters, fostering a culture of collaboration that allows us to function as a seamless extension of our clients' teams, unified toward a shared goal. We embrace change with a solutions-first mindset, acting as a resilient and adaptable strategic partner capable of navigating any complexity to achieve results. We actively seek out the most ambitious and complex challenges, knowing they are the catalyst for the transformational breakthroughs and innovative work that deliver the greatest impact. Our journey is one of purposeful convergence, bringing together elite firms to create a single, powerful entity dedicated to building the Agentic Enterprise. This timeline marks the critical mergers and strategic decisions that transformed us into the leading AI, Data, and Cloud partner for the world's most ambitious organizations. Our name reflects that transformation: at 66°, invisible vapor condenses into a visible cloud, symbolizing how we turn the formless into something powerful and tangible. Cloudbakers and Qwinix merge and create one of the Google Cloud ecosystem’s largest solutions providers. Together, Cloudbakers and Qwinix provide clients an end-to end experience in professional and managed services. Moreover, Cloudbakers and Qwinix provide clients access to a global workforce that enables speed-to-market in a cost effective manner, with team members in the United States, Canada, Costa Rica, and India. Cloudbakers, one of the three companies that would become 66degrees, is founded by Mitch Greenwald in Chicago, Illinois. Cloudbakers would become a Google Cloud Premier Partner and a leader in providing Google Cloud

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.