First Orion Software Engineer Interview Questions

The questions to prepare for a First Orion Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

23questions

~4htotal time

Track your progressSign up free to work through all 23 questions and resume where you left off.

Start practicing free →

CodingStart here. 9 questions · ~94 min

Compute Binary Tree HeightEasy

Practice

Use recursion on left and right subtrees to compute the height of a binary tree.

RecursionDynamic ProgrammingTrees

First Orion

Reverse a String in PythonEasy

Practice

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

Stringsfunctionspython

First Orion

Two Sum with TargetEasy

Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStrings

First Orion

Synchronous vs Asynchronous ProgrammingMedium

Explain the differences between synchronous and asynchronous programming paradigms.

First Orion

More Coding questions with a free account

Execution4 questions · ~42 min

Ensure Distributed Data ConsistencyHard

Define an execution approach for maintaining data consistency across distributed systems while balancing delivery speed, risk, and operational resilience.

InfrastructureTrade-offsRisk Assessment

First Orion

Design an API Under ConstraintsMedium

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

Trade-offsRisk AssessmentScope Management

First Orion

Choose Monolith or MicroservicesMedium

Evaluate the execution trade-offs between monoliths and microservices and explain how you would choose the right approach.

Trade-offsRisk AssessmentScope Management

First Orion

More Execution 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

Behavioral & Leadership10 questions · ~105 min

Owning a Production Debugging IncidentMedium

Tests ownership during a production incident, including structured debugging, stakeholder communication, and learning from high-pressure technical problems.

experienceProblem SolvingDebugging

First Orion

More Behavioral & Leadership questions with a free account

The finish line: interview-readyComplete all 23 questions to finish this plan.