Collabera software engineer interviews, as three candidates describe them, mix core Java and Spring fundamentals, a timed online coding assessment, and deeper React or SQL questions, with some rounds tied to client placement.
$128K
Avg. Base Comp
$154K
Avg. Total Comp
3-6 rounds
Typical Rounds
1-2 weeks
Process Length
Three candidates describe Collabera interviews for different engineering roles, and the experiences differ, so prepare for the stack on your resume instead of one fixed script.
One SDE II candidate, who received an offer, had an L1 round that stayed on fundamentals: Java, Spring Boot, microservices, AWS, Kafka and SQL. They report roughly 35 to 40 questions, including marker and functional interfaces, interface versus abstract class, List versus Set, and Map versus HashMap.
A front-end candidate describes a different path: a short recruiter phone screen, then a Glider AI online assessment with ten coding questions in 55 minutes under browser monitoring. A roughly 30-minute virtual technical round followed, with SQL joins and functions. This candidate also mentions possible L2, HR and client rounds, and says the process from first contact to the final round could take a week or two.
A senior candidate went through three rounds. They report Angular lazy loading and problem-solving in round one, React and Redux Saga depth in round two (useEffect with object-array dependencies, multi-API saga handling), and SQL joins plus Power BI in round three. They received no offer and no status update after the interviews.
The practical takeaway: be able to explain every skill you list, practice timed coding without outside help, and expect that client-facing rounds may depend on the placement.
Synthesized from 3 candidate reports by our editorial team.
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Real interview reports from people who went through the Collabera process.
This was a L1 interview conducted by Cogbee, and it stayed very much on the fundamentals. The round was focused on basic Java, Spring Boot, microservices, AWS, Kafka, and SQL, with most of the discussion centered on core concepts rather than anything deeply algorithmic. I was asked around 35 to 40 questions in total, and the pace was pretty steady throughout. A few of the questions were very direct, like what a marker interface is, what a functional interface is, and the difference between an interface and an abstract class. They also checked basic collections knowledge with questions like List vs Set and Map vs HashMap.
Prep tip from this candidate
Make sure you can explain Spring basics clearly, especially IOC, ApplicationContext, and @Transactional, and be ready to write a small service example using @Transactional. It also helps to review Kafka producer/consumer basics and common Java distinctions like @Mock vs @Spy before the round.
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Sourced from candidate reports and verified by our team.
Topics based on recent interview experiences.
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Synthesized from candidate reports. Individual experiences may vary.
One front-end candidate reports that a recruiter reached out within days of applying and held a phone screen of about 20 minutes. It covered the role and their background, with mostly behavioral questions such as where they saw themselves in five years. Other candidates did not describe this step, so it may vary by role.
The same front-end candidate reports a Glider AI assessment with ten coding questions in 55 minutes. A browser plugin reportedly records video and audio and auto-submits if you open another tab. They found the questions manageable but the time pressure real. This step was not reported by the other two candidates.
An SDE II candidate reports an L1 round of around 35 to 40 questions on Java, Spring Boot, microservices, AWS, Kafka and SQL. Questions were mostly direct concept checks on interfaces, abstract classes and collections. A front-end candidate reports a roughly 30-minute virtual technical round that included SQL joins and functions.
A senior candidate reports three rounds in total. The second dug into React hooks and Redux Saga with multiple API calls plus two problem-solving questions. The third focused on SQL joins and Power BI because those skills were on their resume. Expect resume-listed tools to be tested, though depth likely depends on the interviewer and role.
One candidate mentions possible L2, HR and client rounds, where you may interview with the end client. Outcomes differed: the SDE II candidate reports an offer, while the senior candidate reports no offer and no communication after three rounds. Candidates may want to follow up with their recruiter for status.
