Hire Freelance Retrieval-augmented Generation (RAG) Developers
Anand Ramanathan
Anand is a leading applied scientist in LLM/GPT apps, blending engineering proficiency, product expertise, and the latest scientific insight. He has 20+ years of experience at Microsoft, Amazon, startups, and consulting. He's proficient in NLU, NLP, Python, and AI engineering. Anand's expertise in LLMs and foundation models since their inception enables him to transform complex AI technologies into efficient products, consistently leading in industry advancements and setting new standards.
Show MoreLeonid Ganeline
Leonid is a machine learning and data science engineer proficient in data exploration, experimentation, model training, and fine-tuning using Python, SQL, and Cloud ML. With experience in natural language processing (NLP), anomaly detection, and expertise in building ML teams, Leonid is ready for his next challenge.
Show MoreEnes Gokce
Enes is a data scientist with eight years of experience in machine learning (ML) and natural language processing (NLP). He has a demonstrated history of working with deep learning and extensive experience programming in Python and R. His areas of professional interest include generative AI (GenAI), large language models (LLMs), and hybrid AI solutions with retrieval-augmented generation (RAG) systems.
Show MoreFelipe Batista
Felipe has over 10 years of experience in machine learning and full-stack software development. He is currently focused on leveraging cutting-edge generative AI to build incredible full-stack AI products, ranging from state-of-the-art retrieval-augmented generation (RAG) systems to complex image generation pipelines based on Stable Diffusion. Felipe is proficient with a variety of relevant libraries and technologies, including LlamaIndex, LangChain, PyTorch, Diffusers, and DeepSeek.
Show MoreHenrik Sergoyan
Henrik is a senior AI and ML engineer with 10+ years of experience building production AI systems. He specializes in LLMs, RAG, agents, MCP servers, fine-tuning, LLMOps, MLOps, Python, Django, and cloud deployment. Henrik has delivered platforms for the UN, governments, and private-sector clients, combining technical depth, business understanding, design thinking, and client-focused AI strategy to maximize impact.
Show MoreLefteris Andritsos
Lefteris is an accomplished senior data scientist with over five years of experience developing innovative machine learning solutions. At VMO2, he led the creation of a flagship product recommendation engine, while as a Toptal core member, he focused on productionizing AI models. With a strong background in product and research roles, Lefteris excels at transforming complex data into actionable insights and pushing the boundaries of AI and data science.
Show MoreVaibhav Patel
Vaibhav is an AI engineer who builds and evaluates production LLM and multi-agent systems in Python, source-cited retrieval (RAG), Agentic orchestration (MCP, LangGraph, ADK, Semantic Kernel), fine-tuning, quantization, and open-weight model serving. He brings a computational-science / HPC background in CUDA and multi-core programming.
Show MoreAbdul Hadi Bharara
Hadi is an AI engineer with 5+ years of experience. He has delivered projects for 50+ million users across domains such as accounting, healthcare, compliance, market research, and more. He specializes in projects that include infrastructure decisions, challenging optimizations, and research. What drives Hadi is solutionism: he loves learning new technologies to complete tasks and deliver optimal client products.
Show MoreSheng Han Lim
Sheng Han is a senior machine learning (ML) engineer with 10 years of experience in the research, development, and application of various ML, AI, and generative AI solutions. He has turned big data into valuable actions and has a demonstrated history of driving business efficiencies and cost reductions. Sheng is proficient in generative AI, prompt engineering, computer vision, natural language processing (NLP), anomaly detection, and prediction tasks.
Show MoreKenn Ejima
Kenn is an experienced full-stack developer who has built many web apps, API platforms, and native mobile apps from scratch over the past two decades. His core skills are versatile—data modeling, API design, maintainable code, beautiful UI/UX, TCP/IP networking, and optimizing DB performance. Kenn wrote one of the most referenced articles about the technical comparison between MySQL 8 and PostgreSQL 10. https://hackernoon.com/showdown-mysql-8-vs-postgresql-10-3fe23be5c19e
Show MoreEdison Zhu
Edison is a seasoned BI developer and data engineer with 19 years of experience across diverse industries. Specializing in Azure and Google Cloud Platform (GCP), he excels in designing high-performance BI solutions using tools like Azure Data Factory, Python, Power BI, Tableau, Databricks, and GCP BigQuery. An expert in data architecture, dimensional modeling, and optimizing large-scale data warehouses, Edison delivers scalable, high-quality solutions backed by strong technical expertise.
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