# Build dependable software around real business workflows.

> I build and improve backend services, APIs, internal tools, and web applications with a focus on maintainable architecture, clear domain logic, and safe delivery. I can own a scoped product slice or work alongside an existing engineering team.

Provider: Hung Mac — Senior Full-Stack Developer and Technical Consultant, former Shopware Core developer, relocating to Germany in October 2026.

## Best for

- Business applications with complex domain rules
- New APIs, services, portals, and internal tools
- Legacy code that needs focused modernisation
- Teams needing senior delivery, review, or technical ownership

## Deliverables

- Technical scope and architecture decisions
- Backend, API, database, and appropriate frontend implementation
- Automated tests, observability, and release notes
- Code review, deployment support, and handover

## Process

1. Clarify users, workflows, constraints, and acceptance criteria
2. Shape a small, testable delivery plan
3. Implement in reviewable increments
4. Validate critical paths and transfer operational knowledge

## FAQ

### Can you join an existing development team?

Yes. I can take ownership of a defined workstream, support architecture and code review, or deliver a scoped feature within an established repository and release process.

## Official links

- [Canonical HTML page](https://hungmac.com/en/services/backend-fullstack-development)
- [All services](https://hungmac.com/en/services.md)
- [Contact Hung Mac](https://hungmac.com/en/contact)
- [Shopware Core contributions](https://hungmac.com/en/shopware-core-contributions)