Real, anonymous reports from people who interviewed for Software Engineer at Zscaler, newest first and distilled into what to expect across the loop.
My interview experience was wrapped up as part of an unusually long job search. I’d been going through the process from around November 2025 to May 2026 after getting laid off from Oracle, where I’d been working as an SMTS (IC3). Over those months, I kept moving forward through applications and conversations until it finally ended with an offer from Zscaler.
I applied for the Staff/Senior Staff SDE track and ended up getting an offer after the usual mix of outreach and direct applications. I’d been applying through referrals while also submitting on Zscaler’s portal, and a recruiter reached out as things progressed.
The interview process typically begins with an online assessment focusing on data structures and algorithms (DSA), often including a mix of easy to hard questions across various topics. Candidates should prepare for a strict filtering process based on their performance in this round, as it significantly impacts progression to subsequent interviews.
Candidates can expect multiple technical interviews that assess both coding skills and foundational computer science knowledge, including DSA, operating systems, and networking. The difficulty level is generally medium to hard, and interviewers may explore both problem-solving abilities and specific language syntax.
An HR or behavioral round is usually included, focusing on past experiences and cultural fit. Candidates should be prepared to discuss their project experiences and how they handle challenges, as this round can influence the final decision significantly.
The overall interview process is reported to be structured, but some candidates experienced issues with communication and engagement from interviewers, which could affect their confidence. Candidates should be ready for varying levels of professionalism and clarity during interviews.
The interview timeline can vary, with some candidates experiencing lengthy processes that may include multiple rounds spread over weeks. Patience is essential, as the timeline can feel uncertain and prolonged, impacting the overall experience.
While many candidates reported a clear structure to the interview process, the outcomes often felt disappointing due to mismatches in expectations or role requirements. Candidates should be prepared for potential rejections and varying feedback quality.
