Of the ten postings, Reviewable is the most revealing precisely because it's the smallest. A profitable, bootstrapped code-review SaaS is hiring its first full-time employee — and asking that person to absorb development, product, ops, and contractor management simultaneously. That's not a job description; that's a succession plan.

The stack tells the story:

• JavaScript, Vue, Node — a conventional but unfashionable choice by 2020 standards (React had already won mindshare). Vue signals a solo founder who optimized for personal productivity over hiring-pool size.
• Firebase RTDB — the real tell. Firebase Realtime Database (not Firestore) was already considered legacy at the time of posting. It scales poorly, has awkward querying, and locks you into Google. Choosing it made sense for a solo dev in 2015 who wanted zero ops burden; inheriting it in 2020 means the new hire is signing up for a migration conversation they haven't been warned about.
• GitHub API integration — the entire product's moat and its single largest platform risk.

What the posting reveals about company stage: The phrase "bootstrapped and profitable for a number of years" combined with "first full-time hire" is unusual. The founder has been running this alone (with contractors) long enough to be tired, but the business throws off enough cash to justify a full salary. The explicit mention of "eventually grow into the business role" is a founder quietly signaling they want out — or at least want to stop being the bottleneck. This is a lifestyle-business-to-succession transition, not a growth hire.

Skills highlighted: Generalism over specialization. In a market obsessed with staff-level ICs at FAANG, this posting is a countertrend indicator — there's real demand for engineers who can own an entire product surface, tolerate a legacy stack, and eventually think commercially. It's the "indie hacker acquires indie hacker" pipeline.

Green flags: Profitable, remote-only (rare in 2020), honest about scope, strong niche adoption among code-review-serious companies.

Red flags: Single point of failure (the founder is the company), a niche product competing against GitHub's own PR UI (which keeps improving), Firebase RTDB debt, and an ambiguous equity/ownership story hidden behind "grow into the business role."