This guide tracks 10 patterns, 11 commonly reported questions, and a 4-round loop that usually runs 2-4 weeks.
Key patterns
Showing 3 of 10Common questions
Showing 3 of 11Interview process
Showing 1 of 4 roundsStart studying now, without an account
Every lesson below is a free public reading page. No sign-up, no install, and the worked examples run in the tab.
The Python behind Microsoft's top patterns
These lessons do not teach the patterns themselves. They teach the language mechanics each pattern is built from, which is the part you have to have in your hands before the pattern is worth practicing.
- Arrays & HashingPython10 min readTuples & setsGroup fixed records with tuples and track uniqueness with sets.
- Arrays & HashingPython10 min readDictionariesMap keys to values: read safely, assign, and merge dictionaries.
- TreesPython11 min readRecursion: a function that calls itselfSolve a problem in terms of a smaller version of itself, with a base case to stop.
- StringPython9 min readString indexing & slicingReach into text by position, take slices, and measure length.
- StringPython10 min readString methods & f-stringsClean and reshape text with methods, and build strings with f-strings.
- Linked ListPython11 min readReferences, copies & the mutable-default trapNames share objects: build new lists instead of mutating, and never use a mutable default argument.
How Microsoft judges you outside the code
The values and engineering norms the interviewers are calibrated against. Useful for the behavioral round, and useful for deciding which trade-off to argue for in the technical one.
Values they name
- Growth Mindset - learn from everything, everyone can improve
- Customer Obsession - understand and anticipate customer needs
- Diversity and Inclusion - best ideas come from diverse teams
- One Microsoft - work as one company across all products
- Making a difference - empower every person on the planet
- Integrity and Honesty - build trust through transparency
What they look for in behavioral rounds
- Demonstrate growth mindset - show how you learn from failures
- Show customer-focused decision making in your examples
- Exhibit collaborative behavior across teams and disciplines
- Display passion for technology and continuous learning
- Show you can give and receive feedback constructively
How the team builds
- Growth Mindset in engineering - learn from failures, iterate
- Customer-driven development - build what customers need
- Hackathon culture - innovation from anyone
- Inner source - share code and collaborate across teams
- Accessibility is a requirement, not an afterthought
Primary stack
- C#
- .NET
- TypeScript
- Azure
- Visual Studio
- VS Code
- Python
- React
- Code review
- thorough reviews with mentorship culture
- Deployment
- staged rollouts with Azure DevOps pipelines
- Documentation
- comprehensive internal and external documentation
Reading the guide is the easy part. Microsoft will ask you to perform.
CodeSparring is a practice environment, not a question bank. You sit a full round against an AI interviewer, in an editor that runs your code, and you leave with a score and a specific next rep.
An interviewer that reacts
Carry one problem from clarifying questions through to working code while an AI interviewer responds to what you say and what you type, by voice or by text.
Code that actually runs
An editor in the page with a real runtime and real test cases. You run your solution and read the output, the same way you would in a shared editor on the day.
A scored round, not a vibe
Every session ends with a rubric covering problem solving, communication, and code quality, so you can see which part of the round is costing you the offer.
And 364 lessons you can read right now, free
The whole curriculum is public. Read the concept, run the worked example in the tab, and only sign in when you want the graded exercise at the end of a lesson.