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Papaya AI / ML & LLM Engineering (Remote, Freelance)
USD /hour
Overview
Responsibilities [About the Role] We are looking for talented AI/ML engineers to help build, evaluate, and optimize next-generation AI systems. In this role, you will design and improve machine learning pipelines, fine-tune large language models, develop generative AI applications, and contribute to the research and engineering workflows that power real-world AI deployments. This is a highly technical role ideal for engineers who enjoy solving complex ML problems, working with modern AI architectures, and pushing the boundaries of model performance and capability. [What You’ll Do] As an AI/ML & LLM Engineer, you will: • Build, train, and optimize machine learning models, including LLMs and multimodal models. • Develop and maintain ML pipelines, including data preprocessing, training, inference, monitoring, and performance optimization. • Fine-tune LLMs for downstream tasks and design evaluation strategies to measure progress. • Implement RAG (Retrieval-Augmented Generation) systems using vector databases and orchestration frameworks. • Collaborate with cross-functional teams to design user-facing AI features and integrate models into production workflows. • Conduct research explorations, benchmark different architectures, and experiment with new methods from recent papers. • Build and deploy scalable ML services using Python-based frameworks, cloud platforms, and containerization tools. • Document engineering decisions, model behavior, experiments, and results clearly.
Qualifications • Bachelor’s, Master’s, or PhD in Computer Science, Machine Learning, AI, Engineering, or a related field. • Strong hands-on experience training, fine-tuning, or deploying ML models (2+ years preferred). • Proficiency in Python and ML frameworks such as PyTorch, TensorFlow, or JAX. • Deep understanding of LLM internals: attention mechanisms, transformer architectures, embeddings, tokenization, and evaluation. • Knowledge of RAG pipelines, vector databases, and prompt engineering. • Experience with cloud platforms (AWS, GCP, Azure) and containerization tools (Docker, Kubernetes). • Strong analytical, debugging, and problem-solving skills. • Excellent English communication and documentation skills.
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