
Senior
Scale the out-of-band control plane infrastructure that bootstraps and manages Google's data centers
Google's Control Plane Networking team scales the out-of-band infrastructure responsible for bootstrapping and ongoing management of network devices across Google's global data centers, including work supporting AI-driven networking growth. This is a senior, full-stack infrastructure role spanning distributed systems, network fundamentals, code review, and design leadership.
Practice this interview
Free · a live voice mock calibrated to this exact role
Likely format
Standard Google SWE loop: phone screen(s) with coding, onsite/virtual rounds covering coding, system design, and a Googleyness/leadership behavioral interview.
What this interview tests
- Control-plane / out-of-band network infrastructure design at data-center scale
- Distributed systems: scaling, availability, efficiency tradeoffs
- Technical leadership: driving design reviews, mentoring, code review rigor
- Production issue triage across hardware/network/service layers
- Core data structures and algorithms depth
Common question themes
Design or scale an out-of-band network management system for data centers
Data structures and algorithms coding rounds
System design: control plane scaling, availability, and fault domains
Leadership/behavioral: leading a design review or mentoring junior engineers
Googleyness/leadership behavioral round
How candidates describe it
Real Senior Software Engineer interview stories — retold from candidates' public write-ups, with sources.
Bloomberg Senior Software Engineer Interview: Five Rounds, Offer
A Senior Software Engineer candidate applied to Bloomberg's London office through the company's careers site and, after an initial screen, went through five separate on-site conversations covering coding, system design, a recruiter chat, and a hiring-manager round, ultimately accepting an offer.
Interviewed October 2022 · London, United Kingdom
Google · L3 Software EngineerOfferGoogle L3 software engineer interview: phone screen, four coding rounds, and the Googleyness round
A candidate with two years of experience went from recruiter outreach to offer over about four months. The onsite was four 45-minute coding rounds — three of them featuring binary trees — and one round turned into a 25-minute chain of follow-ups about approximating an optimal solution at scale.
Interviewed June 2020 · Bangalore, IN
Google · L4 Software EngineerNo offerGoogle L4 Software Engineer Interview: Eight Rounds, No Offer
An L4 Software Engineer candidate went through two phone screens, three onsite rounds, a culture conversation, and a team-matching call with a Google hiring manager, then watched the process stall for about a month and a half over a tightened experience requirement before an added extended round ended without an offer.
Interviewed February 2024 · Not specified
All Google Senior Software Engineer interviews
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