Uber sends an online assessment to many intern and new-grad software engineering applicants. The platform appears to have shifted: most 2024 and 2025 reports describe CodeSignal, while 2026 reports describe HackerRank with three problems. This page covers what the Uber online assessment is, its format and timings, how it is scored, the rules to know before you start, how to prepare and a practice plan.
What the Uber online assessment is
It is a timed, auto-graded coding test, usually two to four algorithm problems, that screens applicants before interviews. Uber configures it differently by program, so go by your invitation rather than forum posts.
Format and timings
| Part | What it involves | Time and questions |
|---|---|---|
| 2024 to 2025 reports (CodeSignal) | Four problems in about 70 minutes, or two medium problems in a custom test | About 60 to 70 minutes |
| 2026 graduate reports (HackerRank) | Three coding problems | One candidate reported 105 minutes |
| 2027 intern reports (HackerRank) | Three coding problems | Check your invitation |
Total: commonly reported as 60 to 105 minutes and two to four problems, most recently three.
How it is scored
- Auto-graded against test cases; Uber publishes no cut-off.
- Passing more test cases on more problems improves your chances.
Rules to know before you start
- Confirm the platform in your invitation; it has changed between cycles.
- Outside help is not allowed.
How to prepare
- Read every problem first and rank them by expected time.
- Bank passing test cases early on the easier problems.
- Set a checkpoint of about ten minutes per problem to avoid sinking time.
- Practice arrays, strings and dynamic programming at easy to medium difficulty.
A practice plan
- Day 1: read the platform's candidate guide and try its practice environment.
- Days 2 to 4: two timed problems a day in your test language, writing your own edge-case tests.
- Day 5: one full mock under the real time limit.
- Day 6: review mistakes and the input and output rules.
- Day 7: take the test in one sitting with a stable connection.
Related guides: what an online assessment is, the CodeSignal assessment guide, Uber coding interview questions.
On the day, and the mistakes to avoid
- Check the platform, the allowed languages and the time limit in the invitation.
- Try the practice environment or tutorial so the editor and run buttons are not new.
- Use a reliable computer on a stable connection, with other apps and tabs closed.
- Read every problem before starting, and do the quickest ones first.
- Write and run your own edge-case tests before submitting.
- Keep a few minutes at the end to check output formats and resubmit if needed.
Mistakes that cost candidates:
- Writing an elegant solution that fails large hidden tests because of its complexity.
- Mismatched output formats: extra spaces, prompts or debug prints.
- Spending most of the time on one hard problem while easier points go unclaimed.
- Pasting code you did not write, which integrity settings can flag.
- Not reading the input limits, so a solution that works on samples times out.
What happens after the Uber online assessment
If you pass, the next stage is usually a technical interview, and some interviewers ask about your assessment solution. Be ready to explain your approach and its complexity out loud, and prepare two or three behavioral stories for the conversations that follow. For the next stage, see software engineer behavioral answers.
Where CoPilot Interview fits
Online assessments are tests you take on your own: outside help is not allowed, and proctoring settings can flag other apps, tab switches or a second voice. Practice beforehand instead. CoPilot Interview is an AI interview assistant; its free AI mock interview prepares you for the interviews that follow the assessment, with questions built from your résumé and the job description and each spoken answer scored out of ten. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Read the invitation carefully and follow your employer's rules.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
Does Uber use CodeSignal or HackerRank?
Reports from 2024 and 2025 mostly describe CodeSignal; 2026 reports describe HackerRank. Your invitation will say.
How many questions are on the Uber OA?
Commonly reported as two to four, with recent reports saying three.
How long is the Uber OA?
Reports range from about 60 to 105 minutes depending on the year and program.
What topics come up?
Candidates mostly report array, string and dynamic programming problems of easy to medium difficulty.
Can I use AI tools during the Uber online assessment?
No, unless the instructions explicitly allow it. Assessments are meant to be taken on your own, and proctoring settings can flag other apps, tab switches or pasted code. Use AI tools to practice beforehand, and follow your employer's rules.
Practice this interview before the real one
The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.
Start a mock interview