Mark Zajc

- Providing backend engineering and system design services for EU-based clients. - Designing microservices using Java, Spring Boot, and AWS. - Building scalable APIs and processing pipelines for data-driven and AI-assisted features. - Improving system reliability through monitoring, alerting, and performance optimization. - Collaborating with product, DevOps, and data teams.

- Developed backend services for one of Central Europe's largest e-commerce platforms. - Built and scaled distributed systems handling millions of daily requests. - Improved API performance and reduced system latency through profiling and refactoring. - Collaborated with data teams to support analytics and personalization use cases. - Mentored junior engineers and contributed to architectural decision-making.

- Developed backend and system-level software for internal platforms and tools. - Designed services focusing on reliability, performance, and maintainability. - Collaborated with international engineering teams across Europe and the US. - Contributed to automation and CI/CD improvements.

- Assisted in the development of enterprise backend applications. - Implemented new features, fixed defects, and supported production deployments. - Gained strong foundations in enterprise software development and Agile practices.