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Prep plan
Updated weekly · Last refresh Aug 30

22nd Century Technologies Software Engineer Interview Questions

The questions to prepare for a 22nd Century Technologies Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

31questions
~5htotal time
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1
CodingStart here. 12 questions · ~109 min
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

Stringsfunctionspython22nd Century Technologies
What a Hash Table IsEasy

Explain what a hash table is, how hashing works, and why lookups are usually O(1).

InfrastructureTools22nd Century Technologies
Binary Search on Sorted ArraysEasy

Explain how binary search works on a sorted array and why its time complexity is O(log n).

time complexityArraysSearching22nd Century Technologies
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2
Execution6 questions · ~54 min
Recover a Slipping Engineering ProjectMedium

Assess and recover an engineering project that is behind schedule while managing scope, risk, and stakeholder expectations.

RoadmappingRisk AssessmentScope Management22nd Century Technologies
Design an API Under ConstraintsMedium

Design an API by balancing usability, performance, versioning, and operational risk under real product constraints.

Trade-offsRisk AssessmentScope Management22nd Century Technologies
Design a Scalable ApplicationEasy

Explain how you would design a scalable application, including trade-offs, risks, stakeholder needs, and how you define success.

Trade-offsRisk AssessmentScope Management22nd Century Technologies
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3
Behavioral & Leadership12 questions · ~109 min
Collaborating With a Difficult StakeholderMedium

Tests conflict resolution and influence without authority in a cross-functional marketing analytics setting with real business stakes.

Conflict ResolutionStakeholder ManagementCommunication22nd Century Technologies
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4
More topics1 question · ~9 min
Design Database for New AppMedium

Tests your ability to design maintainable schemas, data models, and query patterns.

JoinsData Wrangling22nd Century Technologies
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 31 questions plus 3 hands-on drills to finish this plan.