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StaffSignal

1:1 System Design & DSA
Mock Interviews & Coaching.

Prepare for Big Tech interviews with live 1:1 mock interviews, targeted preparation, and detailed feedback.

MG

Mohit Gupta

Ex-Staff Engineer, LinkedIn • Senior Engineer, Microsoft • 1,200+ Coached

1 Session

$70 / hr

Single 60-min Mock Interview or Deep-Dive

$119$70one-time
  • ✓1 × 60-min 1:1 session with Mohit Gupta
  • ✓System Design or LeetCode/DSA (Mock or Coaching)
  • ✓45m execution + 15m debrief & detailed feedback
  • ✓Shared Excalidraw board & instant calendar booking
Most Popular • Save 10%

3-Session Pack

$63 / hr

Loop Calibration & Gap Remediation

$210$189one-time
  • ✓3 × 60-min flexible credits (valid 6 months)
  • ✓Mix System Design & LeetCode/DSA freely
  • ✓Combine Mock Interviews + 1:1 Coaching
  • ✓Detailed written feedback & progress tracking
Best Value • Free Book + 1-Yr Pro

5-Session Pack

~$60 / hr

Full Big Tech Prep + Free Book & 1-Yr Pro

$446$299one-time
+ Free Volume 1 Book PDF ($47 value)
+ Free 1-Year StaffSignal Pro ($49 value)
  • ✓5 × 60-min flexible credits (valid 6 months)
  • ✓System Design, LeetCode/DSA & Project Deep-Dive
  • ✓Detailed written feedback + custom study roadmap
  • ✓Priority calendar slots & flexible rescheduling

FLEXIBLE CREDITS

How You Can Use Your 1:1 Sessions.

System Design · Mock

System Design Mock Interview

Realistic L5–L7 simulation probing consistency contracts, write contention, blast radius, and failure modes.

45m Mock + 15m Debrief
System Design · 1:1 Prep

Architecture Deep-Dive Coaching

Break down Rate Limiters, Ledgers, Queues, Geospatial, and Sharding from first principles and master the 45-minute pacing clock.

60m Interactive Prep
LeetCode / DSA · Mock

LeetCode / DSA Mock Interview

Calibrated coding round evaluating constraint framing, brute-force-to-optimal progression, complexity math, and dry-run rigor.

45m Coding + 15m Debrief
LeetCode / DSA · 1:1 Prep

DSA First-Principles Coaching

Master Sliding Window, Monotonic Stacks, Graphs, and Dynamic Programming as state trees instead of memorizing templates.

60m Pattern & Tree Drill

Frequently Asked Questions

How does calendar booking and rescheduling work?

Right after payment, you are redirected to my live calendar (and emailed a private booking link) to pick any slot in your timezone. Need to move a time? Every Google Calendar invite includes a self-serve Reschedule link up to 12 hours before the call.

Can I mix System Design and LeetCode/DSA in the 3- or 5-Session packs?

Yes. Your credits are 100% flexible for 6 months—use them for System Design, LeetCode/DSA, Mock Interviews, or 1:1 Coaching in any combination.

How do I get the free Volume 1 Book PDF and 1-Year Pro Pass with the 5-Session Pack?

Both unlock automatically upon payment. Your confirmation screen and email include an instant download button for the 420+ page Volume 1 PDF, and your email is granted 1 full year of StaffSignal Pro.

Are sessions recorded, or what do I receive afterward?

Sessions are not recorded. Instead, you receive your shared Excalidraw whiteboard / code snapshot and detailed written feedback covering your strengths, blind spots, and concrete next steps.