# Hung Mac — Senior Full-Stack Developer & Technical Consultant > Official English profile and service guide for Hung Mac, a senior full-stack developer and technical consultant for integrations, automation and AI, backend systems, and e-commerce. Hung Mac currently works remotely from Vietnam and will relocate to Germany in October 2026. He supports companies, product teams, and agencies with system integrations, automation, AI features, backend and full-stack delivery, and complex e-commerce projects. Shopware remains available as a specialist capability and verifiable Core experience. ## Services - [Complete machine-readable service catalog](https://hungmac.com/en/services.md): All current services with summaries and detail pages. - [System Integration & Middleware](https://hungmac.com/en/services/system-integration-middleware.md): I design and build reliable integrations between commerce platforms, ERP, CRM, PIM, payment, logistics, marketplaces, and internal tools. The goal is not merely to connect two APIs, but to make data flow traceable, recoverable, and maintainable in daily operations. - [Automation & AI Integration](https://hungmac.com/en/services/automation-ai-integration.md): I automate repetitive processes and integrate AI where it creates measurable value: classification, extraction, summarisation, assisted decisions, content operations, support tooling, and developer workflows. Every solution is designed around data boundaries, human review, cost, and failure handling. - [Backend & Full-Stack Development](https://hungmac.com/en/services/backend-fullstack-development.md): 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. - [E-Commerce Platforms](https://hungmac.com/en/services/ecommerce-platforms.md): I support commerce teams with platform architecture, custom business logic, integrations, checkout and order flows, performance, migrations, and production issues. Shopware is my deepest platform experience and a strong technical proof point—not a boundary around the projects I take on. - [Shopware Freelancer](https://hungmac.com/en/services/shopware-freelancer.md): I’m Hung Mac, a former developer on Shopware’s Core team and now an independent senior full-stack developer. I support merchants and agencies with plugins and apps, updates, production debugging, technical reviews, integrations, and ongoing care for existing stores. I currently work remotely from Vietnam and will relocate to Germany in October 2026. - [Shopware Developer](https://hungmac.com/en/services/shopware-entwickler.md): I develop and review maintainable Shopware 6 solutions across plugins, apps, Store API and Admin API integrations, storefront behavior, checkout rules, administration extensions, migrations, and production fixes. - [Shopware Audit](https://hungmac.com/en/services/shopware-audit.md): A focused technical review of your Shopware 6 store, custom plugins, theme overrides, checkout flow, logs, queues, indexing, integrations, and update risks. - [Shopware 6.7 Updates](https://hungmac.com/en/services/shopware-updates.md): I plan and execute the update to the latest stable Shopware 6.7 patch available for your project. Before production, I review server and Composer requirements, custom plugins, apps, themes, integrations, checkout, the online revocation flow, scheduled tasks, queues, and rollback options. - [Shopware Debugging](https://hungmac.com/en/services/shopware-debugging.md): I investigate broken checkout flows, plugin conflicts, admin errors, failed jobs, payment and shipping issues, API problems, and regressions after updates. - [Shopware Maintenance](https://hungmac.com/en/services/shopware-maintenance.md): For stores that need steady technical ownership, I can review the current state, take over ongoing maintenance, handle updates, fix bugs, and keep a practical backlog for future work. - [Shopware Performance Optimization](https://hungmac.com/en/services/shopware-performance-optimization.md): I help turn slow Shopware 6 stores into a clear technical backlog by measuring storefront speed, checkout behavior, cache usage, indexing, database queries, plugin overhead, media weight, and third-party scripts. - [Plugin & App Development](https://hungmac.com/en/services/shopware-plugin-development.md): I build Shopware 6 plugins and apps for storefront behavior, admin workflows, integrations, checkout rules, data flows, and agency-delivered ecommerce projects. - [Server, Hosting & Deployment Support](https://hungmac.com/en/services/shopware-server-hosting-deployment-support.md): I help Shopware merchants who need a technical owner for their server and hosting, a custom plugin, or code prepared with Codex or Claude Code. I review what has been created, finish or correct it where necessary, test it in the right environment, and support a controlled deployment to production. ## Credentials and expertise - More than 10 years of software experience across backend, APIs, integrations, and production systems. - Former developer on Shopware’s Core team with publicly verifiable Core contributions. - Certified Shopware 6 Advanced Developer, Solutions Specialist, PaaS Specialist, and Frontend Developer. - Experience across Shopware administration, storefront, checkout, orders, email, queues, scheduled tasks, APIs, plugins, and apps. - [Public Shopware Core contributions](https://hungmac.com/en/shopware-core-contributions): Evidence and areas of contribution. ## Engagement - Remote work with companies, product teams, ecommerce teams, and agencies in Germany and Europe. - Scoped projects, hourly support, and ongoing technical collaboration. - Direct technical communication in English; German-language project content and written communication are available. - [Send a project inquiry](https://hungmac.com/en/contact): Include the business goal, current systems, technical context, and timeline. ## Other official sources - [English profile](https://hungmac.com/en): Overview, packages, plugins, and experience. - [Shopware writing](https://hungmac.com/en/articles): English technical articles and practical notes. - [Deutsche Version](https://hungmac.com/de/llms.txt): Gleichwertiger deutscher Leitfaden.