Custom Web Application & Business System Development by Yong ZhangCustom Web Application & Business System Development by Yong Zhang
Custom Web Application & Business System DevelopmentYong Zhang
Cover image for Custom Web Application & Business System Development
I design, develop, and deliver custom web applications and business systems, turning complex requirements and real-world workflows into maintainable software.
I can work independently on a complete application or collaborate with your existing team on specific components, integrations, or system improvements.
What I can help you build
Custom business applications, internal tools, and management platforms
Full-stack web applications using Vue, React, Spring Boot, or Node.js
Task management, approval workflows, scheduling, and operational systems
Database design, business rules, and transaction-based data handling
REST APIs, third-party integrations, and existing-system extensions
Interactive dashboards, reporting interfaces, and data-driven applications
Legacy application improvements, troubleshooting, and refactoring
Deployment, testing, and ongoing application enhancements
What you can expect
Depending on the agreed scope, deliverables may include:
Requirements analysis and a practical technical solution
Frontend and backend application components
Database schemas, APIs, and business logic
Integration with existing systems or external services
Functional testing, issue resolution, and deployment support
Technical documentation and agreed post-delivery adjustments
How we work
We start by discussing your business goals, current workflows, existing systems, and technical constraints.
I'll help identify the core requirements, propose a suitable architecture, and break the work into practical implementation milestones.
Development then proceeds with clear scope boundaries, testing, integration checks, and delivery reviews.
Project timelines and pricing depend on the requirements, complexity, and agreed deliverables. They are confirmed before development begins.
Relevant experience
I have over eight years of software development experience across business applications, GIS platforms, interactive systems, and data-driven software.
My independent full-stack work includes Family Growth Bank, a privately deployed application built with Vue 3, TypeScript, Spring Boot, Spring Modulith, and PostgreSQL.
The project covers recurring tasks, approval workflows, points transactions, reward management, activity tracking, and audit-related functionality.
I have also worked on enterprise GIS applications, complex frontend integrations, reusable SDKs, and existing-system improvements.
Whether you need a new application, additional business features, or help improving an existing system, feel free to share your requirements for a technical assessment and project estimate.
FAQs

Contact for pricing
Duration4 weeks
Tags
PostgreSQL
Spring Boot
TypeScript
Vue.js
Fullstack Engineer
Software Architect
Software Consultant
Software Engineer
Web Developer
Service provided by
Yong Zhang Jinan, China
Custom Web Application & Business System DevelopmentYong Zhang
Contact for pricing
Duration4 weeks
Tags
PostgreSQL
Spring Boot
TypeScript
Vue.js
Fullstack Engineer
Software Architect
Software Consultant
Software Engineer
Web Developer
Cover image for Custom Web Application & Business System Development
I design, develop, and deliver custom web applications and business systems, turning complex requirements and real-world workflows into maintainable software.
I can work independently on a complete application or collaborate with your existing team on specific components, integrations, or system improvements.
What I can help you build
Custom business applications, internal tools, and management platforms
Full-stack web applications using Vue, React, Spring Boot, or Node.js
Task management, approval workflows, scheduling, and operational systems
Database design, business rules, and transaction-based data handling
REST APIs, third-party integrations, and existing-system extensions
Interactive dashboards, reporting interfaces, and data-driven applications
Legacy application improvements, troubleshooting, and refactoring
Deployment, testing, and ongoing application enhancements
What you can expect
Depending on the agreed scope, deliverables may include:
Requirements analysis and a practical technical solution
Frontend and backend application components
Database schemas, APIs, and business logic
Integration with existing systems or external services
Functional testing, issue resolution, and deployment support
Technical documentation and agreed post-delivery adjustments
How we work
We start by discussing your business goals, current workflows, existing systems, and technical constraints.
I'll help identify the core requirements, propose a suitable architecture, and break the work into practical implementation milestones.
Development then proceeds with clear scope boundaries, testing, integration checks, and delivery reviews.
Project timelines and pricing depend on the requirements, complexity, and agreed deliverables. They are confirmed before development begins.
Relevant experience
I have over eight years of software development experience across business applications, GIS platforms, interactive systems, and data-driven software.
My independent full-stack work includes Family Growth Bank, a privately deployed application built with Vue 3, TypeScript, Spring Boot, Spring Modulith, and PostgreSQL.
The project covers recurring tasks, approval workflows, points transactions, reward management, activity tracking, and audit-related functionality.
I have also worked on enterprise GIS applications, complex frontend integrations, reusable SDKs, and existing-system improvements.
Whether you need a new application, additional business features, or help improving an existing system, feel free to share your requirements for a technical assessment and project estimate.
FAQs

Contact for pricing