Lakshya

Software Engineering

Staff / Principal Engineer

Where the job stops being your own output. 87% of postings name mentorship.

Full archetype card in progress

This role is mapped and its data is live — the figures on the field page come from parsing real postings. The full card — a decoded posting, the interview loop, a worked transcript of the decisive round, a three-week plan and pay bands — is still being written.

The themes below are complete, and are the more useful half.

The book for this field

Software Engineering

What postings now ask for, system design at the level actually assessed, product sense for engineers, code and review, debugging and the coding round, what changes from mid to staff, the loop round by round, and choosing a track.

CHAPTER 6What actually changes from mid to senior to staffThe most common promotion failure is doing the previous level extremely well.READ THE CHAPTER →CHAPTER 2System design, at the level actually askedThe round that decides most senior loops. Not a memorised architecture — a sequence of defensible trade-offs.READ THE CHAPTER →CHAPTER 3Product sense for engineersNamed in 84% of postings, above distributed systems. The largest gap between how engineers prepare and what is asked.READ THE CHAPTER →

All 8 chapters in Software Engineering →

Cross-cutting

Skills every archetype tests

These are shared across every field on this site — the same question asked in different vocabulary — so preparation here compounds rather than being spent once. The book above is specific to your field.

Discovery before solutionThe decisive round in three separate archetypes, with the lowest pass rate of any stage.READ THE CHAPTER →The controlOne habit separates strong candidates from plausible ones more reliably than any technical depth.READ THE CHAPTER →Design under constraintThe decisive round for SRE, AI Platform, Infrastructure — and the reason strong engineers fail it.READ THE CHAPTER →

Practice questions across all themes →  ·  Back to Software Engineering →