How levels line up

Every role on the board carries one of five levels, read from its title. Employers use different ladders for the same work, so here is how the buckets usually correspond. Treat it as a map, not a contract: the same title can sit a level apart at two companies, and years are typical rather than required.

Level hereWhat it usually meansGoogleMetaAmazonMicrosoftAppleStartups & security vendors
Junior / entry0–2 yearsFirst security role or an internship. Works on defined tasks with review; learning the environment is part of the job.L3E3L4 (SDE I / Security Engineer I)59–60 (SDE)ICT2Analyst I, Associate, Engineer I
Mid2–6 yearsOwns features or investigations end to end without close supervision. Most postings without a seniority word in the title land here.L4E4L5 (SDE II / Security Engineer II)61–62 (SDE II)ICT3Engineer II, Analyst II, Security Engineer
Senior5–12 yearsLeads projects across a team, sets technical direction for a problem area, mentors. The most common title on this board.L5E5L6 (Senior SDE / Senior Security Engineer)63–64 (Senior)ICT4Senior Engineer, Senior Analyst, Lead
Staff / principal8+ yearsInfluence across an organisation: architecture, standards, the hardest incidents. Titles vary the most here (Staff, Senior Staff, Principal, Distinguished, Architect).L6–L7 (Staff, Senior Staff)E6–E7L7 (Principal)65–67 (Principal)ICT5–ICT6Staff, Principal, Architect, Distinguished
Leadership8+ yearsManages people or owns a security function: Engineering Manager, Head of, Director, CISO. Pay depends on scope more than on years.M1–M2, DirectorM1–M2, D1L6–L8 managers63–70 managers, PartnerM1–M3Manager, Head of Security, Director, VP, CISO

How pay is compared

A posted band is compared with other posted bands in the same role family and level, in the same region when enough exist, then more broadly. The typical band is the median bottom and median top of that set, and the verdict uses midpoints with a 10% tolerance. Bands are wide on purpose, so "in line", "above" and "below" are rough placements, not a score on the offer.