Dataford
Top 50
Topic roadmap
Updated weekly · Last refresh Sep 13

Top 50 Stream Processing Interview Questions

The most frequently asked Stream Processing questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~16htotal time
997companies covered
Track your progressSign up free to work through all 50 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 32 questions · ~604 min
Sliding Window Aggregation in PythonMedium
Practice
Recently asked

Aggregate per-city Lyft ride counts and fares in trailing time windows using queues and running totals.

Stream ProcessingpythonLyftCorva (TX)
Stream Pattern DetectionHard
Practice

Use an Aho-Corasick automaton to detect overlapping activity patterns for Bumble Date users in one stream pass.

Stream Processingdata processingBumbleHotstar
Out-of-Order Stream AggregationMedium
Practice
Recently asked

Aggregate transaction totals and counts by user and timestamp while preserving deterministic output order.

aggregationStream ProcessingData ManipulationThe Boston Consulting Group
Kadane Variant for Max Subarray IndicesMedium
Practice

Return the start and end indices of a non-empty maximum-sum subarray using Kadane's algorithm with index tracking.

Stream ProcessingDynamic ProgrammingArraysPayPal
Parse Nested Keys From Log StreamMedium
Practice
Recently asked

Traverse nested interaction payloads and aggregate requested numeric metrics by Meta session ID.

Stream ProcessingMeta
K Most Frequent in StreamMedium
Practice
Recently asked

Count streaming integers and return the k most frequent values using a frequency map and bounded min-heap.

Stream ProcessingSupermicro
Moving Average from Data StreamEasy
Practice
Recently asked

Compute a real-time moving average using a sliding window and queue in O(1) amortized time per update.

Stream ProcessingQueueSliding WindowMicro1
Moving Window Average Over StreamEasy
Practice
Recently asked

Compute each Jira event's moving average using a fixed-size queue and running sum.

Stream ProcessingData ManipulationAtlassian
More Coding questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
2
Pipelines18 questions · ~340 min
More Pipelines questions with a free account
The finish line: interview-readyComplete all 50 questions to finish this plan.