The Pragmatic Engineer

The Pragmatic Engineer

The Pulse

The Pulse #155: 5-day RTO looms for those at Big Tech?

Also: senior engineers might be more efficient with AI tools than juniors, Anthropic and Claude Code on a roll, and more.

Gergely Orosz's avatar
Gergely Orosz
Dec 04, 2025
∙ Paid

The Pulse is a series covering events, insights, and trends within Big Tech and startups. Notice an interesting event or trend? Hit reply and share it with me.

Today, we cover:

  1. Could a 5-day RTO be around the corner in Big Tech? From next February, workers at Instagram must be in the office, five days a week. This makes Meta the second tech giant after Amazon to mandate a 5-day RTO. Will more big companies do the same?

  2. Are senior engineers better with AI than juniors are? Data from more than 40,000 users of Cursor suggests that experienced devs get better results from AI agents. It suggests the tool amplifies coding skills – not replace them.

  3. Industry Pulse. OpenAI dumps Mixpanel after security breach, Stripe buys usage metering startup, OpenAI’s “Code Red,” a high-risk security issue at a $3B legal startup, and more.

  4. Anthropic and Claude Code on a roll. Claude Code just surpassed $1B in annual run rate revenue after 6 months, Anthropic buys JavaScript runtime Bun, and might plan to go public as soon as next year.

1. Could a 5-day RTO be around the corner for Big Tech?

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