Dr. Shivankar Agrawal is a Marie Skłodowska-Curie Fellow at University College Cork (UCC), Ireland, where his research focuses on marine microbiology, extremophiles, and sustainable biotechnological innovations aligned with the European Green Deal and the UN Sustainable Development Goals. Dr. Agrawal’s work centers on the exploration of marine and cold-adapted microorganisms for applications in sustainable aquaculture, antimicrobial stewardship, and biodiversity conservation. His current research emphasizes the rational development of native probiotic consortia as eco-friendly alternatives to antibiotics in cold-water aquaculture systems. He has extensive experience in natural product research, microbial bioactivity screening, and host–microbe interaction studies, including prior work on plant-derived bioactive compounds with antiparasitic potential. His interdisciplinary approach integrates microbiology, genomics, environmental sustainability, and translational biotechnology to develop climate-resilient and pollution-reducing solutions for marine and coastal ecosystems. Dr. Agrawal actively contributes to international collaborative research initiatives and proposal development under Horizon Europe and MSCA frameworks, with a strong commitment to sustainability-driven innovation, circular bioeconomy strategies, and responsible research practices.