10 Glean Software Engineer (New Grad) Interview Questions (2026)
Glean's new-grad SWE loop in 2026 is a recruiter screen, one technical phone screen, and four virtual onsite rounds. The company builds an enterprise search and assistant platform — interviews favor candidates who think clearly about indexing, access controls, and the production reality of search at company scale.
By Alex Chen, Founder, InterviewChamp.AI · Last verified
Loop overview
New-grad candidates report a 5-7 week timeline in 2026. Phone screen is 60 minutes coding. Onsite is two coding rounds, one systems design round, one technical deep-dive on background, and one behavioral. Hybrid expectations in Palo Alto for most roles; some teams accept remote.
Behavioral (3)
Why Glean? What about enterprise search interests you?
Frequently askedOutline
Talk about a concrete enterprise-knowledge problem you've felt — onboarding, finding old docs, internal-tool sprawl. The company addresses these problems; show you've thought about them. Avoid generic 'I love AI for the enterprise'.
Tell me about a time you had to balance shipping fast with shipping right.
Frequently askedOutline
STAR. Concrete decision where you traded thoroughness for speed (or vice versa). Cover the reasoning at the time, what you chose, the cost you took on, and how it played out. End with what would change your call today. Show you can own decisions, not just execute spec.
Tell me about a time you took initiative on something not assigned to you.
Occasionally askedOutline
STAR. Bug fix, doc, tool, refactor — anything you owned because you saw it needed doing. Cover how you decided it was worth your time, whether you cleared with anyone first, what shipped. The company values self-direction; show you have it.
Coding (LeetCode patterns) (4)
Given a list of integers and a target, return all unique triplets that sum to zero.
Frequently askedOutline
Sort. For each i, two-pointer search in the rest for pairs summing to -nums[i]. Skip duplicate values at i and within the inner loop to avoid duplicate triplets. O(n^2). Walk through a small example. Edge cases: arrays with all zeros, fewer than three elements.
Implement a function that given two version strings (like '1.2.3' and '1.2.4'), compares them.
Frequently askedOutline
Split each by dots, pad with zeros to equal length. Compare numerically segment by segment. Return -1, 0, or 1. O(max length). Edge cases: trailing zeros (1.0.0 == 1), unequal segment counts, non-numeric segments (rare but worth asking about).
Implement a function that returns the longest common prefix of an array of strings.
Occasionally askedOutline
Iterate position by position. Stop when any string ends or characters diverge. Return the prefix up to that position. O(total characters). Edge cases: empty array (return ''), single string (return it). Walk through a small example.
Given a list of intervals, return the minimum number of intervals to remove so that the rest are non-overlapping.
Occasionally askedOutline
Sort by end time. Greedy: pick the earliest-ending interval, skip all that overlap with it, repeat. The count of skipped is the answer. O(n log n) for the sort. Walk through a small example. Discuss why sorting by end (not start) gives the optimal greedy choice.
Technical (1)
How would you debug a search query that returns the wrong result only for some users in the same company?
Occasionally askedOutline
Personalization vs ACL: are the wrong results filtered by access? Personalized ranking signals (recent docs, team membership) shifting results? Stale group memberships? Walk a query through. Mention canary users with known-expected results and per-user query logs that show ranking signals applied.
System / object-oriented design (2)
Design an enterprise search system that respects per-user access controls.
Frequently askedOutline
Index every document with its ACL (list of permitted users/groups). At query time, filter by intersecting requester's identity with each match's ACL. Discuss: precompute by user is too costly at company scale, post-filter risks empty pages, ACL caching for hot users. Mention the upstream-permissions-sync problem (group memberships change).
Design a system that incrementally indexes documents from many SaaS sources (Google Docs, Slack, Confluence-like).
Frequently askedOutline
Per-source connector polls or webhooks. Connector emits events (created, updated, deleted, ACL-changed). Worker pool processes events, fetches full content, indexes. Discuss rate limits from sources, dedup of cross-source links, and idempotency for retried events. Mention catch-up after a long outage.
Glean interview tips
- Search and ACL fundamentals come up in every design round. Be ready to talk about indexing, ranking, and the security layer that filters results per user.
- Connector / ETL thinking helps. Most enterprise data lives in SaaS sources; engineers regularly think about polling vs webhooks, idempotency, and rate limits.
- Coding rounds are medium with strong emphasis on clean, readable code. Variable naming, edge cases, and verification steps matter as much as the algorithm.
- Behavioral rounds screen for self-directed engineers. The company expects new grads to take initiative; have stories that show that.
- Compensation is competitive for mid-stage enterprise AI. Hybrid expectations vary by team — confirm with your recruiter.
Frequently asked questions
How long is Glean's SWE new-grad interview process in 2026?
Most reports show 5-7 weeks from recruiter outreach to offer. Onsite scheduling is typically within 1-2 weeks of the phone screen.
Does Glean ask system design for new-grad SWE?
Yes — one round, focused on search, indexing, ACL, or connector problems rather than generic web-scale distributed-systems design.
Is Glean remote-friendly?
Hybrid in Palo Alto is the default for most engineering roles. Some teams accept fully remote. Confirm with your recruiter.
What programming languages does Glean use?
Go is the primary backend language. TypeScript for frontends. Python for some ML services. New-grad interviews are language-agnostic; use what you're fastest in.
Do I need enterprise SaaS experience to interview at Glean as a new-grad SWE?
No — conceptual familiarity with SaaS tools (you've used Google Docs, Slack, etc.) and their permission models is enough. Direct enterprise engineering experience isn't required.
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