<p>The human gut microbiome plays a crucial role in digestion, immunity and overall health. Recent advancements in microbiome engineering have led to the development of engineered probiotics, offering new therapeutic possibilities for various health conditions. Engineered probiotics can enhance gut colonization, regulate metabolic functions and deliver targeted bioactive compounds. Additionally, advancements in CRISPR-based gene editing, synthetic biology and artificial intelligence are revolutionizing microbiome research, enabling precision medicine approaches for disease prevention and treatment. Probiotics are being tailored to combat gastrointestinal disorders, metabolic diseases and immune-related conditions while also influencing the gut-brain axis for potential neurological benefits. However, challenges related to safety, regulatory approval and public acceptance remain key barriers to widespread clinical application. Addressing these concerns through standardized protocols and rigorous clinical validation will be essential for integrating microbiome engineering into mainstream healthcare. As research progresses, next-generation probiotics hold immense potential in revolutionizing personalized medicine and microbiome-based therapeutics. This review explores current trends and future directions in probiotic-based microbiome engineering, focusing on strain selection, genetic modifications and innovative therapeutic applications.</p>