There's not much out there about AT&T PM interviews specifically so I'm writing this up after finishing their loop for a Senior PM role on their B2C fiber product team.
Full disclosure: I've previously been a PM at a mid-size SaaS company. This is not a FAANG-style PM interview. The process is calibrated differently.
Total rounds: 4, all virtual
Round 1: Recruiter screen (30 min, no tech) Standard. See other posts on this.
Round 2: Hiring manager intro (45 min) The HM opened with a product walkthrough question: "Take me through a product you've worked on. What decisions did you make and what would you do differently?" This was 20 minutes of the conversation. Then he asked about my experience with telecom or connectivity products (I didn't have direct experience, he wasn't worried). Ended with a brief pitch on the team and what they're building.
Round 3: Product panel (90 min, two interviewers) Three types of questions mixed together: Product sense: "AT&T is launching a new bundled home service product. How would you define success metrics and what's your go-to-market approach?" This required knowing AT&T's actual customer segments (they have different products for different income brackets and geographies). I'd done research but the interviewers clearly expected some domain prep. Execution / prioritization: "You have 3 sprints left before a major partner deadline and engineering just told you two features will slip. Walk me through how you decide what ships." Classic PM scoping question. Stakeholder management: "Describe a time you had to say no to a senior stakeholder's request." The AT&T org is huge. They're really asking: can you hold a position with executives?
Round 4: Cross-functional (45 min, engineering partner) The eng lead asked me about my experience writing PRDs and defining acceptance criteria. We talked through a technical trade-off in a product I'd shipped. She wasn't trying to quiz me on code but she wanted to see I understood feasibility constraints.
Behavioral weight: Higher than at most tech companies. I'd estimate 50% of total time across all rounds.
They offered within 2 weeks. The role pays more like a large enterprise PM comp (not FAANG) but with solid benefits and actual ownership over a meaningful customer surface.