Dean D.

MobyMax is a US-based EdTech platform delivering personalized learning solutions to millions of students and educators across high-traffic educational environments.

• Architected and maintained scalable backend systems using PHP (CakePHP, Laravel), building features that supported large-scale concurrent usage across schools and districts
• Designed and optimized MySQL databases, including schema architecture, indexing strategies, and query performance tuning for high-volume transactional workloads
• Developed React.js frontend components tightly integrated with backend APIs to ensure responsive, data-driven user experiences
• Integrated third-party APIs and services, ensuring secure data exchange, authentication flows, and reliable service orchestration
• Contributed to CI/CD pipelines, code reviews, and Agile ceremonies to maintain high development velocity and production stability
• Continuously refactored legacy modules to improve maintainability, scalability, and performance under increasing traffic loads

Traveltechhouse is a German travel technology company focused on large-scale booking engines and B2B/B2C travel platforms. Dean played a key role in building Travixx, the leading booking engine in the Adriatic region.

• Designed the full technical architecture and process flow for Travixx, a booking engine responsible for approximately 50% of online flight tickets sold in Serbia and Croatia
• Architected and implemented the core MySQL database schema supporting high-transaction booking, pricing, and ticketing operations
• Developed and maintained backend systems using PHP (LAMP stack), ensuring stability and scalability of mission-critical booking workflows
• Integrated 10+ major APIs using SOAP and cURL, including Travelport, Travelfusion, Farelogix, FlyDubai, Pegasus, and multiple payment gateways
• Designed and launched the public Travixx API, enabling direct B2B integrations and white-label booking solutions
• Led development teams, coordinated workflows, and ensured delivery aligned with client requirements and market deadlines
• Translated complex business logic (dynamic pricing, inventory aggregation, packaging) into scalable and maintainable codebases

Additional key projects:

Minveo (Germany) – Online automated investment management platform

• Led workflow planning and system architecture for a fintech platform that managed over €10M in assets shortly after launch
• Designed MySQL database structures and implemented backend logic for automated daily stock exchange operations
• Integrated banking APIs (DAB Bank, Deutsche Post Ident) for identity verification and transaction processing

Smarttime – B2B/B2C travel package booking engine

• Developed combined flight, hotel, and services booking flows using Travixx API and Hotelbeds API
• Integrated payment gateways and implemented dynamic package pricing logic
• Led both frontend and backend development, aligning business requirements with technical execution

• Performed hardware and software testing on rugged display systems used in defense and aerospace environments
• Assisted in validation procedures and troubleshooting of embedded systems in Linux environments
• Documented test results and supported quality assurance workflows