System Design Interview Preparation Tutor

Title: System Design Interview Coach Needed — 30 Sessions (HLD, LLD, Estimation)
Budget: $250 fixed price for 30 sessions (~$8-9/session). Paid via milestones. Open to reasonable counter-offers from strong candidates.
Job Description:
Looking for an experienced software engineer to run a structured coaching program to help me prepare for system design interviews (both high-level and low-level design).
What I need covered:

Back-of-the-envelope estimation — QPS, storage, bandwidth, latency budgeting
Core fundamentals — load balancing, caching, database sharding/replication, CAP theorem, consistency models, message queues, rate limiting, API design
Classic HLD problems — URL shortener, rate limiter, chat system, news feed, ride-sharing, etc.
LLD / OOD implementation — Parking Lot, Elevator System, Vending Machine, etc. — class design, design patterns, SOLID principles
Mock interviews — realistic practice with feedback on structure, communication, and handling follow-up questions
Live whiteboarding — comfortable diagramming in Excalidraw, the way it'd come up in a real interview or take-home assignment

Format:

30 x 1-hour sessions, ideally 2-3x/week
Video call, screen share, Excalidraw for diagramming
Should progress from fundamentals toward realistic mock-interview difficulty by the final sessions
Occasional between-session homework/practice problems

Process: I'll start with a 1-session paid trial before committing to the full package, to make sure it's a good fit for both sides.
Please include in your proposal:

Relevant experience (systems you've worked on, interviews you've been through)
How you'd structure the first 5 sessions
Your availability and timezone
Your rate for this package (open to discussing the $250 budget for the right fit)