She joined Block to build AI. Weeks later, AI led to her job loss.
Block’s AI-driven layoffs stand as a vivid reminder of how little security even the most future-focused roles hold in today’s tech economy—and how swiftly the ground can shift for the people building that future.
On Thursday, Jack Dorsey, CEO and founder of Block—the parent company of Square and Cash App—announced plans to cut over 4,000 jobs, roughly 40% of its workforce, shrinking headcount from more than 10,000 to just under 6,000 as part of a wide-ranging restructuring. Dorsey directly linked the cuts to efficiency gains from the company’s AI rollout.
“We’re already seeing that the intelligence tools we’re creating and using, paired with smaller, flatter teams, are enabling a new way of working that fundamentally redefines what it means to build and run a company,” he wrote in a post on X.
The announcement, made just ahead of Block’s earnings report, sent shares up more than 20% in after-hours trading. In a Thursday note, Morningstar Senior Equity Analyst Brett Horn noted that Block’s fourth-quarter growth accelerated significantly and that management’s 2026 guidance calls for meaningful margin improvement as the company sharply reduces its staff. He maintained an $83 fair value estimate.
Still, Horn cautioned: “The long-term impact of dramatically reducing staff and betting on AI productivity gains is uncertain, in our view.”
Among those affected is Debbie O’Brien, a senior staff developer relations engineer in Applied AI at Block based in Mallorca, Spain. She had joined only weeks earlier to help developers adopt AI workflows using agents and the Model Context Protocol. According to her , she has more than 15 years of experience in frontend development, over 20,000 followers, and 10,000 YouTube subscribers. reached out to O’Brien but didn’t receive a response as of press time.
In a candid shared Friday, O’Brien described learning—indirectly at first—that she might be among those laid off. She was in a training session when a manager abruptly ended the call and told everyone to check their email. Colleagues began posting in Slack that they had been “cut,” but O’Brien only saw Dorsey’s company-wide memo, not an individual notice.
Hours passed with no clarity. “I don’t know—do I have a job? Do I not?” she recalls. Near 12:30 a.m., she said: “I opened my computer, looked, and there was the DocuSign—the official termination process. I read through it, had to sign it, and now I have a meeting today to go over returning the computer and other details. At least that let me sleep, because then I knew for sure: I no longer have a job.”
O’Brien had been working on Goose, Block’s open-source AI agent framework built around the Model Context Protocol. She says the team was “on the bleeding edge,” rapidly rolling out automations—from tools that generate release notes and videos in minutes to agentic flows that let users order food through ChatGPT, powered by Block’s payments infrastructure.
She is careful not to single out Dorsey, her managers, or Block’s leadership, framing the move instead as a binary “light switch” decision about risk and survival—one other companies may soon face.
But she is blunt about the broader lesson: “Our future in tech is unstable.” After back-to-back layoffs—first from and now Block—she says she no longer sees tech roles as inherently secure, even in high-demand fields like AI. Her advice is pragmatic: get personal finances in order, cut fixed costs like housing, and plan for the possibility of repeated disruption.