How to connect with former interviewers from top tech companies for advice

Connecting with former tech company interviewers for system design advice gives you something no course or book can provide: insider knowledge of how the evaluation rubric actually works. A course teaches you what a load balancer does. A former Google interviewer who has conducted 200+ system design rounds tells you: "At Google, interviewers prefer you demonstrate how components work at a fundamental level rather than name-dropping cloud products." That one insight changes how you prepare for every Google interview going forward. In 2026, former FAANG interviewers are more accessible than ever—through coaching platforms, LinkedIn, anonymous professional networks, content creation, and community events.

Key Takeaways

• Former interviewers provide three things courses cannot: rubric-specific feedback, company-specific question patterns, and real-time calibration of your answer against the actual scoring bar.
• The most reliable channels for connecting with ex-FAANG interviewers are coaching platforms (Exponent, MentorCruise, Design Gurus, IGotAnOffer), LinkedIn direct outreach, and anonymous professional networks (Blind, TeamBlind).
• Always offer to pay for an interviewer's time. Free advice requests to busy senior engineers get ignored. Paid session requests get responses.
• Content creators who are former interviewers (Arslan Ahmad, Alex Xu, Fahim ul Haq, Gaurav Sen) publish free insider insights regularly. Following their content is the lowest-effort way to access interviewer perspective.
• The best time to connect with former interviewers is 3–4 weeks before your interview—early enough to implement feedback, late enough that your preparation is substantial enough to benefit from expert calibration.

Why Interviewer Perspective Matters

System design interviews have a rubric. At Google, Meta, Amazon, and Netflix, interviewers fill out a structured scorecard after each round. They evaluate specific dimensions—requirements gathering, architectural design, trade-off reasoning, communication—and assign a rating. The rubric exists, but it is not published externally. Candidates prepare without knowing exactly what is being measured.

Former interviewers have seen this rubric. They know which behaviors earn a "strong hire" signal and which earn a "mixed" signal. They know the specific follow-up questions interviewers are trained to ask. They know what distinguishes an L5 answer from an L6 answer—not in theory, but from having scored hundreds of candidates across both levels.

This asymmetry is why connecting with former interviewers provides disproportionate value. A single conversation can reveal patterns that months of self-study would not surface. For example, a former Meta interviewer shared that the single biggest predictor of system design failure at Meta is not technical gaps but disorganized delivery. That one insight—which no textbook teaches—reorients an entire preparation strategy toward communication structure.

Where to Find Former Tech Company Interviewers

Dedicated Coaching Platforms

The most reliable way to connect with vetted former interviewers who are ready to provide structured feedback.

Design Gurus (designgurus.io)

Design Gurus was founded by Arslan Ahmad, a former FAANG hiring manager at Meta and Microsoft who has conducted hundreds of system design interviews. The platform offers 1-on-1 mock interview sessions with ex-FAANG engineers who know the rubric firsthand. Sessions are specifically designed to complement the Grokking the System Design Interview course, providing expert calibration after you have completed structured learning.

Design Gurus also publishes a library of 185+ system design articles—many written from the interviewer's perspective—including company-specific guides for Google, Meta, and Amazon that break down exactly what each company evaluates.

Exponent (tryexponent.com)

Exponent connects candidates with coaches who have conducted interviews at specific target companies. Their system design coaching roster includes former engineers from Google, Meta, Amazon, Microsoft, and Netflix. You can filter coaches by company and role. Exponent also publishes mock interview recordings and guides written with input from ex-FAANG interviewers—like Mark K. (former Google EM with 200+ interviews), Ramprasad A. (former Meta engineer), and Xiao H. (senior engineer with 100+ interviews across FAANG).

MentorCruise (mentorcruise.com)

MentorCruise hosts senior engineers and engineering directors from companies including Google, Tesla, and fintech unicorns. Mentors are pre-vetted with a 4.9/5 average rating. The platform supports both one-off sessions (150–300) and ongoing monthly mentorship (100–400/month).

IGotAnOffer (igotanoffer.com)

IGotAnOffer provides a curated roster of interview coaches from FAANG companies. Their system design content is developed with input from coaches like Nupur D. (former Google TPM with 300+ coaching sessions) and Tim L. (former AWS Senior SDE with 500+ interviews). The platform offers coaching sessions, published interview guides, and downloadable cheat sheets created by former interviewers.

LinkedIn Networking

LinkedIn is the largest professional network for reaching former FAANG interviewers, but it requires a thoughtful approach.

How to find former interviewers: Search for engineers with titles like "Staff Engineer," "Principal Engineer," or "Engineering Manager" at your target company. Look for profiles that mention "interviewing," "coaching," "mentoring," or "system design" in their headline, About section, or posts. Many former interviewers actively post about interview preparation.

How to write an effective outreach message:

A bad message: "Hi! I would love to pick your brain about system design interviews. Can we chat sometime?"

A good message: "Hi [Name], I am preparing for a system design interview at [Company] in 3 weeks. I saw your post about [specific topic they discussed]. Would you be open to a paid 60-minute mock interview session? I have completed Grokking and 10+ practice problems, so I am past the fundamentals stage and looking for calibration feedback. Happy to work around your schedule and pay your standard rate."

The good message works because it is specific (names the company and timeline), demonstrates preparation (not asking to be taught from scratch), offers payment (respects their time), and is flexible (accommodates their schedule). Senior engineers receive dozens of generic networking requests weekly. Specificity and respect for their time are what earn responses.

Following interviewer content on LinkedIn: Many former FAANG interviewers share system design insights on LinkedIn regularly. Following Alex Xu (ByteByteGo), Arslan Ahmad (Design Gurus), and Ashish Pratap Singh (AlgoMaster) gives you access to their interviewer perspective through free posts, articles, and occasional live sessions.

Anonymous Professional Networks

Blind / TeamBlind

Blind is an anonymous professional network popular among FAANG engineers. The "Interview" and "System Design" forums are active with current and former interviewers sharing candid insights about what their companies actually evaluate. Because posts are anonymous, engineers share details they would never put on LinkedIn—specific rubric criteria, common rejection reasons, and real question patterns.

Blind is especially valuable for company-specific intelligence. A search for "Meta system design interview" or "Google L6 system design" returns recent threads from engineers who have either conducted or undergone these interviews within the past few months.

Reddit (r/cscareerquestions, r/ExperiencedDevs)

Reddit communities include threads where former interviewers answer questions about system design evaluation. The r/ExperiencedDevs subreddit is particularly useful for senior-level perspectives. Quality varies, but upvoted answers from verified engineers tend to be reliable.