11/12/2026 updated
100 % available
Senior Full-Stack & Cross-Platform App Developer (Flutter, WordPress / PHP) | Software Architect
Dumaguete, Philippines
Worldwide
Diplom-Ingenieur (BA) / B.Eng. – Informationstechnik (BA Mannheim / DHBW)FlutterPHPWeb DevelopmentPHP DevelopmentSoftware ArchitectureWooCommerceWordPressFull Stack DevelopmentDart
Senior Full-Stack & Cross-Platform App Developer (Flutter, WordPress / PHP) | Software Architect
BA Mannheim (DHBW) educated Software Engineer & Architect with extensive international corporate experience (Germany & Shanghai) in software engineering, system architecture, and technical cost estimation (Aufwandsschätzung & Projektkalkulation).
Core Technical Skills & Tech Stack:
Mobile App Development (App-Entwicklung): Flutter, Dart, Cross-Platform Architecture (iOS & Android), State Management (Bloc, Provider), REST APIs, App Store & Google Play Deployment, Offline-First & Sync Architectures.
Web Development (Webentwicklung): WordPress, PHP, WooCommerce, Custom Theme & Plugin Development, JavaScript, HTML5, CSS3, Performance Optimization, Technical SEO, API Integrations.
Software Architecture & Enterprise Engineering: System Architecture, Requirements Engineering, Agile / Scrum, Git, CI/CD, Technical Cost Estimation & Effort Scoping, IT Security by Design.
Foundational Credentials: Dipl.-Ing. (BA) / B.Eng. (BA Mannheim), TOGAF 9.2 (Enterprise Architecture), CEH (Certified Ethical Hacker), PAPM (Project & Application Portfolio Management).
Proven Track Record & Production Systems:
PrivateHostHQ: End-to-end architecture, development, and deployment of a cross-platform Flutter & Dart property management and calendar synchronization application.
DumagueteTravel.com: Full-stack WordPress & PHP development, custom booking workflows, and performance optimization.
Corporate Enterprise Projects (Shanghai / International): Led software engineering teams, enterprise architecture design, and reliable effort/cost estimation for complex international software projects.
Availability: 100% Remote worldwide (fluent in English & German, reliable CET/CEST timezone overlap).
Experience
Professional experience10+ years
Freelancer since2018
Languages
GermanNative speakerEnglishFluent
Project history
Following my corporate career, I transitioned into independent software product development, building and operating custom web and mobile applications from concept to live production:
PrivateHostHQ (Flutter / Dart): Designed, architected, and developed a cross-platform mobile application for automated property workflows, multi-channel calendar synchronization, and operational management.
DumagueteTravel.com (WordPress / PHP): Built and continuously maintain a commercial travel and accommodation portal featuring custom PHP integrations, booking workflows, and performance optimization.
Applied corporate-grade software architecture, security-by-design, and agile iteration to deliver reliable, self-hosted production systems.
Led enterprise software engineering initiatives, system architecture design, and reliable effort/cost estimation (Aufwandsschätzung) for international corporate projects across Europe and Asia. Managed cross-functional requirements engineering, security-by-design standards, and stakeholder budgeting.