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CBTS Interview Preparation

Medium-Hard

Technology · India

For more than 30 years, CBTS has been designing, building, and operating resilient technology foundations for mid-market and enterprise organizations across North America. Today, CBTS and our OnX Canada division serve more than 3,000 clients, with expertise spanning AI, data, applications, cloud, networking, digital workplace, and cybersecurity. CBTS Forge AI is our end-to-end framework for helping organizations cut through the noise and build the strategy, data foundation, and infrastructure they need to make AI work. Our core values are not just guiding principles but the driving force behind our vision to help clients achieve successful and measurable outcomes. These values shape our actions and decisions each day, ensuring that we consistently deliver high-quality solutions and exceptional service to our clients. CBTS holds more than 2,500 technical certifications — including a growing portfolio of AI-specific credentials and partnerships with the world's leading AI innovators. Get the highest tier of vendor support, early access to emerging platforms, and engineering teams with hands-on expertise across the world's most advanced AI solutions. “I love the creative, tailored solutions that are delivered in a consistent and reliable way while always doing what it takes to make things right.” “My team at CBTS have been trusted partners for a long time. They provide excellent technical support and pre-sales work. Their breadth of knowledge and ability to bring in the right resources have helped us steer our technology into the future.” “CBTS treats us like a partner and not just a customer. The technical expertise is next to none and the relationship management is some of the best I have experienced.” Whether you need a full lifecycle partner or targeted expertise to fill a specific gap, CBTS flexes to fit your situation. We ask questions before we propose solutions. We tell you when something isn’t the right fit. And we stay accountable long after the engagement ends. CBTS was founded in 1994 as a technology arm of Cincinnati Bell. Our early focus on communications infrastructure gave us more than a decade’s head start in managing complex, enterprise-scale networks. Over the years, we expanded our capabilities, deepened our technical bench, and grew our reach. The acquisition of OnX extended our footprint into Canada. Investments in software-defined wide area networking (SD-WAN) and network as a service (NaaS) put us at the forefront of infrastructure modernization. Today, a growing practice in AI, cloud, and application development reflects where we’ve

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

About CBTS

For more than 30 years, CBTS has been designing, building, and operating resilient technology foundations for mid-market and enterprise organizations across North America. Today, CBTS and our OnX Canada division serve more than 3,000 clients, with expertise spanning AI, data, applications, cloud, networking, digital workplace, and cybersecurity. CBTS Forge AI is our end-to-end framework for helping organizations cut through the noise and build the strategy, data foundation, and infrastructure they need to make AI work. Our core values are not just guiding principles but the driving force behind our vision to help clients achieve successful and measurable outcomes. These values shape our actions and decisions each day, ensuring that we consistently deliver high-quality solutions and exceptional service to our clients. CBTS holds more than 2,500 technical certifications — including a growing portfolio of AI-specific credentials and partnerships with the world's leading AI innovators. Get the highest tier of vendor support, early access to emerging platforms, and engineering teams with hands-on expertise across the world's most advanced AI solutions. “I love the creative, tailored solutions that are delivered in a consistent and reliable way while always doing what it takes to make things right.” “My team at CBTS have been trusted partners for a long time. They provide excellent technical support and pre-sales work. Their breadth of knowledge and ability to bring in the right resources have helped us steer our technology into the future.” “CBTS treats us like a partner and not just a customer. The technical expertise is next to none and the relationship management is some of the best I have experienced.” Whether you need a full lifecycle partner or targeted expertise to fill a specific gap, CBTS flexes to fit your situation. We ask questions before we propose solutions. We tell you when something isn’t the right fit. And we stay accountable long after the engagement ends. CBTS was founded in 1994 as a technology arm of Cincinnati Bell. Our early focus on communications infrastructure gave us more than a decade’s head start in managing complex, enterprise-scale networks. Over the years, we expanded our capabilities, deepened our technical bench, and grew our reach. The acquisition of OnX extended our footprint into Canada. Investments in software-defined wide area networking (SD-WAN) and network as a service (NaaS) put us at the forefront of infrastructure modernization. Today, a growing practice in AI, cloud, and application development reflects where we’ve

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.