Vishal Poshtiwala

Senior Ai Ml Engineer @Rejoicehub LLP

Surat, IN

Led end-to-end development of AI-powered applications, including chatbots, recommendation systems, and intelligent automation solutions, delivering scalable and production-ready systems aligned with client requirements• Designed and implemented Retrieval-Augmented Generation (RAG) pipelines, integrating vector databases, embeddings, and large language models to enhance response accuracy, contextual understanding, and enterprise knowledge retrieval• Built, fine-tuned, and deployed machine learning and deep learning models for NLP, text classification, sentiment analysis, and predictive analytics using Python, TensorFlow/PyTorch, and modern ML frameworks• Collaborated with cross-functional teams (product managers, backend engineers, and clients) to translate business problems into data-driven AI solutions, ensuring optimal model performance and usability• Optimized model performance through data preprocessing, feature engineering, hyperparameter tuning, and evaluation, improving accuracy, latency, and scalability in real-world applications• Developed and maintained REST APIs and microservices for AI/ML models, enabling seamless integration with web and mobile applications• Mentored junior engineers and interns by providing technical guidance, code reviews, and best practices in machine learning, AI architecture, and software engineering standards• Conducted research and experimentation with LLMs, prompt engineering, and emerging AI tools, continuously improving system capabilities and keeping solutions aligned with industry advancements• Ensured deployment, monitoring, and maintenance of AI systems in production environments, ensuring robustness, reliability, and continuous improvement