Evangelos Vlachos developed new API capabilities for the iqm-finland/iqm-client repository, focusing on enhancing data access for quantum computing calibration workflows. He designed and implemented Python-based API endpoints and client methods to retrieve calibration data and quality metrics, enabling faster validation of quantum experiments and supporting automated quality control. His work involved backend development and API design, with careful attention to data retrieval patterns and integration with existing quantum computing operations. By expanding the API surface and introducing robust retrieval functions, Evangelos provided a foundation for more data-driven calibration processes, demonstrating depth in both Python programming and quantum computing concepts.