Dataford
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Updated weekly · Last refresh Sep 24

Tech(x) Software Engineer Interview Questions

The questions to prepare for a Tech(x) Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~8htotal time
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1
CodingStart here. 30 questions · ~297 min
Hash Table vs Binary Search TreeEasy

Compare hash tables and binary search trees by structure, operation costs, ordering, and when each is the better choice.

Hash TablesbstData StructuresTech(x)
Unique Palindrome SubstringsMedium
Practice

Count distinct palindromic substrings using an eertree in linear time.

coding challengeStringsData StructuresTech(x)
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2
SQL & Data Manipulation4 questions + 3 drills · ~70 min
3-Day Rolling Average of TweetsMedium

Evaluates your ability to write SQL for time-based aggregations and window logic.

sqlTech(x)
SQL Query WritingMedium

Assesses your ability to translate requirements into correct SQL.

sqlTech(x)
Top 5 Users by ActivityMedium
Practice
Practice drill

Identify Tech(x)'s five most active users with a date-filtered LEFT JOIN and grouped activity counts.

sql queryData Analysisuser engagementTech(x)
Anagram Check With SQLMedium
Practice
Practice drill

Compare normalized character signatures to determine whether each pair of strings is an anagram.

data cleaningJoinsstring manipulationAdobe
Sum From 1 to 1,000,000Easy
Practice
Practice drill

Calculate the sum of integers from 1 to 1,000,000 using PostgreSQL aggregation and filtering.

AlgorithmsVirtu Financial
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3
System Design6 questions · ~59 min
Backend API for FrontendMedium

Evaluates your system design and API design skills for building web services.

apiTech(x)
CUDA Kernel DesignHard

Evaluates systems-level thinking for parallel computation and GPU kernel design tradeoffs.

designcudaTech(x)
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4
Behavioral & Leadership8 questions · ~79 min
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5
More topics2 questions · ~20 min
Maintainable, Testable CodeMedium

Assesses your engineering practices for code quality, testing, and long-term maintainability.

best practicescode qualityTech(x)
Tradeoffs QuestionMedium

Assesses your ability to reason about competing constraints and make engineering decisions.

Decision MakingTrade-offsTech(x)
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.