Full Stack Senior Engineer (Python + Reactjs + GenAI)

Codebase is a young software services company with a great pool of tech-savvy developers. We started in the spring of 2018, and have been growing aggressively. We are located in Pune, India, and serve software product companies across the globe; focusing on enterprise SaaS, eCommerce, cloud, and application development.

We are looking for a talented Full Stack Engineer with strong experience in Python and React to join our team. The ideal candidate will also have a good understanding of Retrieval-Augmented Generation (RAG), Large Language Models (LLMs), and Generative AI technologies. This role involves building production-grade web applications and integrating intelligent AI-driven solutions.

• Design, develop, and maintain full-stack applications using Python (FastAPI / Django / Flask) and React.
• Implement scalable APIs and integrate with AI/LLM backends for real-time interaction or content generation.
• Work with vector databases, RAG pipelines, and model workflows to build retrieval-based AI systems.
• Collaborate with interdisciplinary teams to translate AI research into deployable features.
• Optimize application performance, scalability, and data handling.
• Follow best practices in software design, architecture, and deployment using modern DevOps pipelines.

• 3-5 years Strong proficiency in Python (preferably with FastAPI, Django, or Flask).
• Solid experience with React.js and frontend development tools.
• Familiarity with RAG architecture, LLMs, and Generative AI concepts.
• Understanding of RESTful APIs and microservices.
• Experience with databases (PostgreSQL, MongoDB, or similar).
• Knowledge of cloud platforms (AWS, GCP, or similar) is a plus.
• Strong problem-solving skills and an appetite for learning emerging AI technologies.

Nice to have:

• Experience with vector databases (Pinecone, FAISS, Chroma, etc.).
• Familiarity with open-source LLM frameworks like LangChain, LlamaIndex, or Hugging Face.
• Exposure to CI/CD, containerization (Docker), and MLOps concepts.

• Excellent problem-solving and analytical skills.
• Strong communication and interpersonal abilities.
• Ability to work independently and as part of a team.
• Proactive and eager to learn new technologies.