Mohit

Technical Lead

Tata Consultancy Services • Fulltime

Oct 2022 - Oct 2025 • 3 yrs

As a Technical Lead, I led the design, development, and scaling of production-grade web applications, APIs, and intelligent systems, leveraging over 9 years of hands-on experience in Python and backend engineering. I was responsible for architecting robust backend systems using Django, FastAPI, Flask, and Django REST Framework, ensuring high performance, security, and reliability. I guided the team in building scalable solutions capable of handling high traffic, complex business logic, and large datasets. I played a key role in driving AI/ML initiatives within the organization, including the development of LLM-powered applications. I designed and implemented Retrieval-Augmented Generation (RAG) pipelines, prompt engineering strategies, and end-to-end AI workflows using tools such as LangChain and LlamaIndex. These systems enabled use cases like intelligent chatbots, document search, and knowledge automation. My responsibilities in AI included: - Leading prompt engineering and optimization for consistent model outputs - Integrating LLM APIs and building scalable AI services - Designing RAG architectures using vector databases such as FAISS, Pinecone, and Weaviate - Implementing semantic search, embeddings, and contextual retrieval systems I also oversaw data acquisition strategies, including large-scale web scraping and data extraction using tools like Scrapy, BeautifulSoup, and Selenium, supporting downstream AI and analytics pipelines. On the data layer, I designed and optimized databases using PostgreSQL, MySQL, and MongoDB, focusing on schema design, indexing, and query performance. For scalable system design, I implemented asynchronous and distributed processing using Celery, Redis, RabbitMQ, and WebSockets, enabling real-time and high-throughput applications. From a DevOps and infrastructure perspective, I managed cloud deployments and system reliability using AWS, Docker, Nginx, Gunicorn, and CI/CD pipelines (Jenkins).

Senior Software Engineer

IBM • Fulltime

Jul 2017 - Sep 2022 • 5 yrs 2 mos

Senior Python & Django Developer | Backend, Cloud & Data Systems Experienced Senior Python Developer with 9+ years of hands-on expertise in building, customizing, and maintaining scalable web applications, REST APIs, and data-driven platforms. Strong command of Python, Django, FastAPI, Flask, and Django REST Framework, with deep experience designing secure, high-performance backend systems. Proficient in PostgreSQL, MySQL, and MongoDB, including schema design, query optimization, indexing, and migrations. Extensive experience in asynchronous and concurrent programming, implementing background processing and real-time features using Celery, Redis, RabbitMQ, and WebSockets. Highly skilled in cloud deployment and infrastructure, working with AWS, NGINX, Gunicorn, proxy servers, and implementing CI/CD pipelines using Jenkins for automated builds and deployments. Strong exposure to system performance tuning, caching strategies, monitoring, and production support. Experienced in data analysis and automation, using Pandas, NumPy, and SciPy to build ETL workflows, analytical reports, visualizations, and automated dashboards. Comfortable working independently or within cross-functional teams, contributing to architecture decisions, code quality, and long-term maintainability. Known for a strong learning mindset, ownership of deliverables, and consistently delivering reliable, scalable, and future-ready Python solutions.