Ready to ace your next interview?
Take the Formation Technical Interview Readiness Assessment (TIRA) to get detailed feedback on where you're ready to interview and where you need to level up.
What will the printList()function output after the following code?
head.next = new Node(2);
n1 = new Node(3);
n1.next = head;
head.next.next = new Node(4);
head.next = new Node(5);
printList(head);
WHO IT'S FOR
The TIRA is for you if…
You are gearing up for the technical interview process
You want direction on where to level up
You want to see the companies we think you'd pass/fail at
You have some skills with data structures and algorithms

You
BEFORE YOU START
45min
If you gotta leave midway through, no worries! You can save your progress.
Measures Technical Interview readiness
Get questions on core topics like Arrays, Linked List, Binary Trees etc.
Use Javascript or Python
Pick whichever coding language you feel most comfortable in.
Get detailed results
We'll breakdown your skills and give intel on where you're ready to interview.
DETAILED RESULTS
Get useful feedback





WHY IT WORKS
Built by Engineering Hiring Managers
As early engineers at Meta, we collectively interviewed thousands of software engineering candidates and noticed the same skill gaps popping up over and over. We built this benchmark with one simple goal in mind: to help exceptional engineers level up and land life-changing roles.


Michael Novati
Founder and CTO
8+ years as Senior Staff Software Engineer @Facebook
Top all-time committer to @Facebook’s codebase during his tenure
Founded Formation to help create more diverse engineering teams


Daniel Tomko
Instruction Engineer
20+ years of engineering experience @ Facebook, @Microsoft
Helped design the behavioral interview loops @Facebook
Building scalable mentorship for next generation of engineers