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Updated weekly · Last refresh Sep 9

interface.ai Software Engineer Interview Questions

The questions to prepare for a interface.ai Software Engineer interview. Questions from real interview reports rank first. Updated daily.

27questions
~4htotal time
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1
CodingStart here. 6 questions · ~53 min
Unique Users in Sliding BufferMedium
Practice

Maintain distinct user IDs in every size-k event window using a deque and frequency map in linear time.

Data Structuresinterface.ai
Sliding Window for Stream ProcessingMedium

Tests ability to design and implement an efficient sliding-window algorithm for stream processing.

data processingSliding Windowinterface.ai
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2
System Design7 questions · ~61 min
Design a Chatbot SystemHard

Tests your ability to design conversational systems with appropriate components and data flow.

system designinterface.ai
System Design for Interface.aiHard

Evaluates your system design skills including architecture, scalability, and trade-offs.

system designProgramminginterface.ai
Data Structure Trade-offs for ChatbotsMedium

Tests understanding of data structure performance trade-offs for real-time conversational systems.

Trade-offsData Structuresinterface.ai
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3
Behavioral & Leadership11 questions · ~97 min
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4
More topics3 questions · ~26 min
Debugging a Production IssueMedium

Evaluates your troubleshooting approach and ability to restore service on a real product.

Problem Solvinginterface.ai
Python, REST, SQL, and OOPMedium

Assesses your practical backend fundamentals across Python, APIs, and data querying.

restsqlpythoninterface.ai
API Data Integrity and SecurityHard

Tests secure API design, data validation, and integrity controls in production systems.

apiSecuritydata integrityinterface.ai
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Nth Salary SQLMedium
Practice
Practice drill

Use ranking to return the nth distinct salary from an employee table.

system designnull handlingsqlAkamai
SQL Duplicate Record DetectionEasy
Practice
Practice drill

Find duplicate American Institutes for Research assessment submissions using a CTE, GROUP BY, HAVING, and joins.

deduplicationsqldata integrityAmerican Institutes for ResearchPublix Super MarketsMacy's
Mitigate Data Skew in JoinsHard
Practice
Practice drill

Detect a heavily skewed join key and produce a deterministically salted join result for more balanced large-scale processing.

database optimizationlarge datasetsJoinsDatabricks
The finish line: interview-readyComplete all 27 questions plus 3 hands-on drills to finish this plan.