Design a digital whiteboard tool for distributed engineering teams

Design a collaborative real-time digital architecture whiteboarding tool tailored specifically for distributed software engineering teams conducting system design reviews, database schema modeling, and sprint retrospectives.

Context

Generic whiteboards (Miro) are great for sticky notes, but lack technical diagramming primitives (UML, AWS architecture components, live code execution, git versioning).

Clarifying questions to ask first

Does the tool integrate directly with GitHub/GitLab repositories for architecture documentation? (Yes).
Is there real-time multiplayer cursor collaboration? (Yes, WebGL canvas).

How to approach it

Engineer Persona Needs: Staff System Architect (draws complex microservice diagrams), Frontend/Backend Engineers (database ERDs, sequence diagrams), Agile Scrum Master (sprint retros)
Identify Technical Friction: Drawing arrows between 50 microservices is tedious; diagrams go out-of-date with production code immediately; no live data simulation
Design Core Technical Innovations:
1. "Code-to-Diagram & Diagram-to-Code Sync" (Type Mermaid/PlantUML syntax or draw visually with instant bidirectional sync)
2. Cloud Infrastructure Stencil Hub with Live Cost Estimator (Connecting an AWS RDS to EC2 icon calculates estimated monthly AWS infrastructure cost live)
3. Interactive API Sequence Simulator (Send a mock payload through the diagram to visualize microservice request/response hops)
4. Git Version Control for Architecture Diagrams

Framework: Engineering Workflow & Persona Needs -> Technical Diagramming Deficits -> Technical Feature Architecture -> Live Cloud & Code Integrations -> Success Metrics

Sample answer

Engineers hate manually dragging boxes; typing syntax (Mermaid) and having it render a clean editable vector diagram saves 70% diagramming time
Simulating request payloads live through an architecture diagram reveals design bottlenecks before writing code

MVP: Multiplayer infinite canvas, Mermaid syntax bidirectional editor, AWS/GCP cloud stencil library with live pricing, and 1-click Markdown export into GitHub PRs

Executive design: A code-aware engineering canvas bridging visual architecture diagramming with Mermaid syntax sync, live cloud cost estimation, and interactive microservice payload simulation.

What interviewers look for

Engineering-Specific Diagramming Primitives
Bidirectional Code-to-Canvas Sync (Mermaid/PlantUML)
Live Infrastructure Cost & Packet Simulation
Git Architecture Versioning