Mark Kralj

-Delivered end-to-end solutions for international clients, including SaaS platforms, fintech applications, and e-commerce systems -Designed scalable backend architectures using Node.js, Django, and serverless AWS services -Built high-performance frontend applications using React, Next.js, and TypeScript -Implemented CI/CD pipelines and automated testing frameworks to ensure rapid and reliable deployments -Provided technical consulting on system architecture, performance optimization, and cloud migration.

-Designed and developed enterprise SaaS applications using React, TypeScript, and Node.js -Built modular frontend architecture with reusable component libraries and design systems -Integrated third-party APIs including payment gateways and analytics services -Led Agile sprints, coordinated cross-functional teams, and ensured timely project delivery

-Developed scalable ad-tech platforms handling real-time bidding and analytics using Node.js and React -Built dynamic UI components and data visualization dashboards for large-scale marketing campaigns -Implemented RESTful APIs and integrated third-party services for campaign management and tracking -Improved application performance through lazy loading, caching strategies, and code splitting -Collaborated closely with product teams in Agile environments to deliver high-quality features on schedule

-Engineered enterprise-grade web applications using PHP (Laravel) and Vue.js -Designed secure authentication and authorization system. -Built and maintained REST APIs consumed by multiple client platforms -Refactored legacy codebases, improving maintainability and reducing technical debt -Participated in system design discussions and contributed to architectural decisions