ABOUT NEXSYS Nexsys https://www.nexsysit.co.in/ is a boutique Software Company. Nexsys is focused on Product Engineering and Digital Engineering & is growing rapidly. Nexsys HR policies, Retention Rate, Work Culture, and Ability to learn and grow are significantly better than industry standards. Python Developer (FastAPI & Generative AI)

Experience:
3
- 4 years Role: Python Developer AI/ML & Generative AI Job Summary We are looking for a skilled Python Developer with 34 years of experience in backend development, FastAPI, and AI/Generative AI technologies. The ideal candidate should have hands-on experience building REST APIs, integrating AI/LLM models, developing RAG-based applications, and deploying scalable AI-powered solutions. The candidate should be comfortable working on real-world AI applications and contributing to the complete development lifecycle, from development and integration to deployment.

Key Responsibilities
- Develop and maintain backend applications using Python.
- Build scalable REST APIs and microservices using FastAPI.
- Develop and integrate AI/ML and Generative AI applications using libraries such as LangChain, LlamaIndex, and Hugging Face.
- Implement Retrieval-Augmented Generation (RAG) pipelines, embeddings, semantic search, and vector database integrations.
- Integrate LLMs such as OpenAI, Azure OpenAI, Llama, Mistral, or similar models.
- Work with SQL and NoSQL databases for data storage and retrieval.
- Implement prompt engineering, context management, and response evaluation.




- Containerize applications using Docker and support cloud deployments.
- Collaborate with cross-functional teams to deliver reliable, scalable AI-powered solutions. Mandatory Skills
- 34 years of hands-on experience in Python development.
- Strong experience in FastAPI and REST API development.
- Hands-on exposure to LangChain, LlamaIndex, or similar AI frameworks.
- Practical experience with LLMs and Generative AI applications.
- Knowledge of RAG, embeddings, vector databases, and semantic search.
- Experience working with SQL databases such as PostgreSQL or MySQL.
- Familiarity with Git, Docker, and application deployment. Valuable to Have
- Experience with vector databases such as Pinecone, FAISS, ChromaDB, Qdrant, or Weaviate.
- Exposure to AWS or Azure cloud services.
- Knowledge of Redis, asynchronous programming, and background processing.
- Experience with Hugging Face, PyTorch, or TensorFlow.
- Understanding of prompt evaluation, hallucination reduction, and AI application monitoring. Candidate Profile
- Strong Python programming and problem-solving skills.
- Practical development experience rather than only theoretical AI/ML knowledge.
- Ability to independently develop APIs and integrate AI models.
- Good communication and collaboration skills.
- Experience building and deploying real-world AI applications. Interested candidates with hands-on Python, FastAPI, and Generative AI development experience are encouraged to apply.

📌 Backend Python Developer (Pune)
🏢 Nexsys It Solutions
📍 Pune