CRISIL - Senior Python Developer - System Design

About the Role :

We are seeking a highly skilled and motivated Senior Python Developer to join our dynamic and fast-paced technology team. The ideal candidate possesses a strong background in building robust, scalable web applications and a deep interest in the rapidly evolving field of Generative AI (GenAI).

In this role, you will design and develop sophisticated backend and web-based solutions while contributing to innovative projects involving GenAI technologiesincluding chatbots, Retrieval-Augmented Generation (RAG) systems, and intelligent automation workflows.

You will collaborate with cross-functional teams including product, data science, DevOps, and UI/UX to deliver high-quality, high-impact software that enhances user experience and drives measurable business value.

Key Responsibilities :

- Design, develop, and maintain scalable backend services and RESTful APIs using Python and FastAPI.

- Architect clean, maintainable, and high-performance application components.

- Implement secure and efficient API endpoints, middleware, and integrations.

- Build and enhance web applications leveraging modern Python-based frameworks.

- Work on full lifecycle development including design, development, testing, deployment, and optimization.

- Ensure high performance, security, and responsiveness across all application modules.

Contribute to projects involving GenAI, including :

- Chatbot development

- RAG pipelines (Retrieval-Augmented Generation)

- Prompt engineering and AI-assisted workflows

- Collaborate with AI/ML engineers to integrate machine learning/GenAI capabilities into backend systems.

Architecture, Quality & Performance :

- Take technical ownership of complex features and system design.

- Conduct code reviews, enforce best coding practices, and ensure high-quality deliverables.

- Optimize application performance, scalability, and security.

Cross-Team Collaboration :

- Work closely with product managers, front-end developers, DevOps, and data scientists.

- Participate in design discussions, sprint planning, and troubleshooting sessions.

- Provide mentorship and guidance to junior developers when required.

Required Skills & Expertise :

Core Technical Skill s:

- Strong proficiency in Python

- Advanced experience with FastAPI or similar Python web frameworks (Flask, Django)

- Expertise in web development and backend architectures

- Solid understanding of RESTful APIs, microservices principles, and asynchronous programming

Additional Knowledge :

- Experience integrating or working with Generative AI, chatbots, or NLP workflows (preferred)

- Familiarity with cloud platforms (AWS, GCP, Azure) and DevOps tools (good to have)

- Knowledge of SQL/NoSQL databases

- Understanding of version control (Git), CI/CD pipelines, and containerization (Docker)

Soft Skills :

- Strong problem-solving and analytical skills

- Excellent communication and interpersonal abilities

- Ability to work independently and own complex deliverables

- Proactive mindset with a passion for innovation