Jane Street Software Engineer Interview Questions
5+ Jane Street Software Engineer interview questions drawn from real candidate reports. Sources include 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. Questions span every stage of the Jane Street Software Engineer loop: OA, phone screen, system design, behavioral, and onsite coding.
What to Expect in the Jane Street Software Engineer Interview
The Jane Street Software Engineer interview process typically runs 4 to 6 rounds depending on seniority level. Based on candidate reports in the LeakCode database, the loop usually includes a resume review, an online assessment or coding phone screen, one or more technical rounds, a system design round (for senior and above), and a behavioral or values round.
Difficulty skews toward medium and hard LeetCode-style problems in the coding rounds. System design questions test breadth (component selection, scaling, trade-off reasoning) more than deep implementation. Behavioral questions are tied to the company's stated values and principles.
Jane Street Software Engineer Questions (Sample)
jane street software engineer tech phone screen interview experience
First Round, Coding 写一个类似于 vscode 的 code editor，需要支持 block shrink and expand Example： Given: 1 a = 1 2 + for i in range(10): 3 print(i) 4 print(i ** 2) 5 b = 10 Do shrink(2), return: 1 a = 1 2 + for i in range(10): 3 b = 10 Second Round, PyTorch Coding 照着一个model流程图实现出来
Jane Street SRE Technical Phone Screen Featuring Rate Limiting Algorithm
It's basically writing the algorithm on paper. The problem is essentially a rate-limiting problem. Given a list of IP access log lines with IP address and timestamp, flag the IP addresses that access
Jane Street ML Performance Engineer Interview Experience
This post was last edited by sycstudent on 2025-09-26 12:41 Basic Information: Last year of PhD program in the Midwest (hopefully) I contacted a recruiter from JS during the conference and scheduled a
Jane Street MLE Internship Technical Phone Screen Experience
Last month, I had my first-round interview at Jane Street, similar to the first round for an SDE intern. The main question was a simulation: simulating a 2D chessboard with two types of pieces. The fi
Jane Street Quantitative Research Intern Technical Phone Screen
45 minutes, two questions, no resume testing. The first question was relatively simple, a classic question that involved playing dice with a casino. Since my impression wasn't very strong, I won't pos
Difficulty Breakdown
2
easy
Based on 5 questions with difficulty labels from candidate reports.
Interview Rounds
Here is how the Jane Street Software Engineer questions in the LeakCode database break down by interview round, based on what candidates reported:
| Round | Questions in Database |
|---|---|
| phone screen | 4 |
Most Common Topics
Question Recency
1
2026
4
2025
Question counts by interview year, based on candidate-reported dates.
How to Prepare for the Jane Street Software Engineer Interview
Use the LeakCode question database as your primary research tool. Filter by role (Software Engineer), then by round type to focus your prep on the specific stages in your upcoming loop. Sort by recency to see what 2026 candidates actually faced.
- Start with questions from the last 12 months. Interview processes change and recent data is the strongest signal.
- Cross-reference questions that appear in multiple sources (1p3a, Blind, Glassdoor). Multi-source confirmation means a question has stronger recurrence probability.
- For system design rounds: focus on the question patterns, not individual questions. The same design principles recur across many prompts.
- For behavioral rounds: map your experiences to the company's stated values before the interview. Most behavioral questions at top companies are derivatives of a small set of core leadership competencies.
FAQ
How many Jane Street Software Engineer questions are in the database?
5+ questions from verified candidate reports. The count grows as new reports are scraped daily from 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode.
Are these questions from real Jane Street interviews?
Yes. All questions are sourced from actual candidate interview reports, not generated by AI. Each entry links back to its source URL where available, and questions are tagged with the year and round reported by the candidate.
How current is this data?
LeakCode updates daily. The database is filtered to exclude duplicate and low-quality entries. You can filter by interview year to focus on recent cycles.
Does LeakCode cover Jane Street OA questions specifically?
Yes. The database includes online assessment questions tagged with round type. See the Jane Street OA page for a dedicated view.
Related: Jane Street All Questions · Jane Street OA Questions · Browse All Companies · Data Sources