System Architecture & Technical Documentationcrystal zhu
I help founders and teams turn complex, unclear ideas into clear system architecture and technical documentation.
My focus is on business flows, data structure, and long-term scalability — so development teams know exactly what to build, and why.
What's included
System Architecture & Business Flow Document
A clear and structured architecture document that explains the overall system design, core business flows, key entities, and system boundaries.
The document is written for both technical and non-technical stakeholders, providing a shared understanding of how the system works and how it should be built.
Module & Responsibility Breakdown
A breakdown of major system modules, their responsibilities, and how they interact with each other.
This helps teams understand ownership, reduce overlap, and build features in a consistent and scalable way.
Data Flow & Core Entity Overview
High-level data flow diagrams and explanations showing how data moves through the system.
Includes key entities, relationships, and design rationale to support correct implementation and future extensions.
Phase-Based Scope Definition (MVP vs Future Phases)
A clear separation of what should be built now versus later phases.
Helps control scope, reduce risk, and align business expectations with technical delivery.
FAQs
Founders, product owners, and teams who need clarity before or during development — especially when requirements are complex, evolving, or not fully defined yet.
No. This service focuses on system architecture, business flow design, and technical documentation.
The output is a document that development teams can confidently build from.
Yes. I clearly separate Phase 1 (what to build now) and future phases, so teams can ship quickly without blocking long-term design.
Yes. The documents are written to be clear for both technical and non-technical readers, using structured explanations instead of heavy jargon.
crystal's other services
Contact for pricing
Tags
Google Docs
Notion
Backend Engineer
Software Architect
Systems Engineer
Service provided by
crystal zhu Hong Kong
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System Architecture & Technical Documentationcrystal zhu
Contact for pricing
Tags
Google Docs
Notion
Backend Engineer
Software Architect
Systems Engineer
I help founders and teams turn complex, unclear ideas into clear system architecture and technical documentation.
My focus is on business flows, data structure, and long-term scalability — so development teams know exactly what to build, and why.
What's included
System Architecture & Business Flow Document
A clear and structured architecture document that explains the overall system design, core business flows, key entities, and system boundaries.
The document is written for both technical and non-technical stakeholders, providing a shared understanding of how the system works and how it should be built.
Module & Responsibility Breakdown
A breakdown of major system modules, their responsibilities, and how they interact with each other.
This helps teams understand ownership, reduce overlap, and build features in a consistent and scalable way.
Data Flow & Core Entity Overview
High-level data flow diagrams and explanations showing how data moves through the system.
Includes key entities, relationships, and design rationale to support correct implementation and future extensions.
Phase-Based Scope Definition (MVP vs Future Phases)
A clear separation of what should be built now versus later phases.
Helps control scope, reduce risk, and align business expectations with technical delivery.
FAQs
Founders, product owners, and teams who need clarity before or during development — especially when requirements are complex, evolving, or not fully defined yet.
No. This service focuses on system architecture, business flow design, and technical documentation.
The output is a document that development teams can confidently build from.
Yes. I clearly separate Phase 1 (what to build now) and future phases, so teams can ship quickly without blocking long-term design.
Yes. The documents are written to be clear for both technical and non-technical readers, using structured explanations instead of heavy jargon.
crystal's other services
Contact for pricing