Interview atlas
Explore 105 curated Q&As across 1 employers — filter by career stage, round, or company.
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Reported in Personio European engineering loops. Foundational search algorithm with clear loop invariants and edge cases.
Reported in Personio European engineering loops. Pointer manipulation staple for junior coding interviews.
Reported in Personio European engineering loops. Graph traversal question covering shortest paths, connectivity, and complexity.
Reported in Personio European engineering loops. Tree recursion warm-up that often leads to balanced-tree and diameter follow-ups.
Reported in Personio European engineering loops. Sliding window pattern for substring problems with hash set or map tracking.
Reported in Personio European engineering loops. Sort-and-sweep array problem common in calendar and scheduling interviews.
Reported in Personio European engineering loops. Introductory dynamic programming problem isomorphic to Fibonacci.
Reported in Personio European engineering loops. Hash map plus doubly linked list problem bridging DSA and system components.
Reported in Personio European engineering loops. Classic DP testing tabulation, space optimization, and item selection reconstruction.
Reported in Personio European engineering loops. Graph algorithm for non-negative edge weights using priority queue.
Reported in Personio European engineering loops. Foundational system design covering APIs, encoding, storage, and read-heavy scaling.
Reported in Personio European engineering loops. System design testing token bucket, sliding window, and Redis coordination.
Reported in Personio European engineering loops. Mid-to-senior design spanning WebSockets, message storage, and presence.
Reported in Personio European engineering loops. Caching patterns for system design and backend performance tuning.
Reported in Personio European engineering loops. Infrastructure design question covering L4/L7 balancers and health checks.