How PrepDossier researches interview guides

The evidence hierarchy

Specificity earns trust only when the evidence behind it is at least as specific.

A vivid anonymous post does not outrank a current employer guide. An employer page can confirm the intended process, but it cannot prove that every team runs it identically. The guide should show both facts without forcing either into false certainty.

• Level 1, employer-confirmed: current careers pages, role descriptions, candidate guides, values, engineering writing, product documentation, and official recruiting instructions.
• Level 2, repeated candidate pattern: several recent accounts that agree on a stage or evaluation theme and reasonably match the same role, level, and region.
• Level 3, role and industry context: credible material that explains the technical or business work but does not prove a particular interview stage.
• Level 4, preparation inference: a clearly labelled recommendation derived from the role requirements, not a claim that the employer asks a certain question.

How Reddit and candidate reports are used

Candidate reports are pattern evidence, not a private answer key.

We review public discussions on Reddit and other candidate-report platforms to find repeated themes, variation by team, and details candidates say were unclear before their interviews. We do not treat votes, confident wording, or one memorable experience as verification.

Before a pattern is used, we check whether the account names the role, seniority, location, date, and interview stage. We look for agreement across independent accounts and compare it with the employer's current guidance. Details that cannot be corroborated remain omitted or are described as candidate-reported variation.

• Useful pattern: several recent candidates describe coding, design, and behavioral conversations for comparable senior engineering roles.
• Weak pattern: one candidate lists an exact prompt without enough context to establish the role or date.
• Conflict rule: current recruiter instructions override both public guides and candidate reports.
• Privacy rule: confidential material, leaked banks, personal information, and content behind access controls are not republished.

How confidence is expressed

The wording should tell you how much weight a claim can carry.

We avoid precise round counts, timing, or question frequency when the public evidence does not support that precision. A useful guide can say that system design becomes more important with seniority without inventing a universal level threshold.

• Confirmed means a current employer source states it directly.
• Repeated means multiple reasonably comparable candidate reports describe the same pattern.
• Likely means the role requirements and available evidence support the preparation priority, but the stage is not confirmed.
• General practice means the advice improves interview performance without claiming company specificity.

Freshness, scope, and change

A process can differ because of team, level, hiring program, country, or a recent experiment.

Research prioritizes current sources and records the page update date. A job description is used as a role scorecard, not as permanent proof of the whole company's process. Time-sensitive experiments, including AI-enabled assessments, are described as pilots or reported changes unless the employer confirms broader adoption.

The guide names important scope limits. Amazon's public SDE II page, for example, can support exact SDE II details but not a claim that every university, specialist, or senior loop is identical. Apple publishes rich team and role material but no single public software interview blueprint, so its guide should emphasize recruiter verification and team-specific depth.

What a guide must pass before publication

A long article is not automatically a researched article.

• The search intent and audience are explicit in the title, introduction, and preparation plan.
• Every company-specific process claim can be traced to a source or is qualified as a reported pattern.
• Practice prompts are labelled and are not presented as leaked or guaranteed questions.
• Advice changes by role and seniority instead of repeating one generic company template.
• The page includes limitations, a visible update date, useful internal links, and a correction path.
• Copy is checked for unsupported superlatives, fake statistics, invented testimonials, and promises of interview success.

How guide topics are selected

Demand matters, but evidence quality and candidate usefulness matter too.

Company-role guides are prioritized using several signals: observed candidate preparation demand, the breadth of current job openings, recurring questions in public communities, existing search visibility, and whether enough reliable material exists to write something more useful than a generic checklist.

Demand datasets from preparation platforms are treated as directional proxies, not exact Google search volume. They can identify a strong cluster such as Google, Amazon, Apple, Microsoft, and Meta, but they do not justify claims about every job seeker or market.