Rajat Upadhyay
Python Developer
Noida
Summary
Data-Focused Python Developer & Aspiring Data Scientist with 7 years of experience in software development, specializing in data-driven applications and analytics. Proficient in Python (Pandas, NumPy), SQL, and FastAPI, with hands-on experience in data transformation, ETL processes, and building APIs for data services. Strong in data analysis and visualization using Tableau and Power BI, enabling actionable insights and supporting data-driven decision-making. Experienced in working with large datasets, performing EDA, and automating reporting workflows. Currently upskilling in Machine Learning and Data Science with practical exposure to real-world problems. Seeking roles as a Data Scientist, Data Analyst, or Data-Focused Python Developer to apply analytical and problem-solving skills in delivering business impact.
Overview
2026
2026
years of professional experience
1
1
Certification
1
1
Language
Work History
Technology Lead
Infosys
02.2025 - 02.2026
- Worked as a Python Developer at Infosys, developing REST APIs using FastAPI for data-driven applications
- Built and integrated backend services to support data processing and business workflows
- Gained hands-on exposure to Machine Learning concepts, including data preprocessing, model building, and basic predictive analysis
- Collaborated with team members to deliver scalable solutions within project timelines
- Contributed to data handling, API integration, and performance optimisation tasks
Software Developer
Tata Consultancy Services(TCS)
09.2018 - 02.2025
- Led development of data-driven applications using Python and SQL, improving efficiency by up to 20%
- Performed requirement analysis and delivered scalable solutions for data processing and reporting
- Built ETL pipelines and automated workflows using Pandas and NumPy
- Developed dashboards in Power BI and Tableau for business insights
- Created REST APIs using FastAPI to support data services
- Conducted EDA on large datasets to support data-driven decisions
- Collaborated with cross-functional teams to ensure timely project delivery
Verizon
- Developed a FastAPI-based system integrating ETL pipelines for real-time device data processing and reconciliation
- Built REST APIs to handle large-scale data retrieval and transformation, supporting analytics and monitoring
- Automated data workflows, reducing manual effort by ~40% and improving operational efficiency
- Applied data analysis techniques for data validation and insights, enhancing system reliability
- Improved performance using asynchronous processing for faster API response times
- 9 Months
Sodexo
- Developed a Generative AI application leveraging machine learning techniques for intelligent data processing and content generation
- Integrated a novel audio-to-document conversion system using AI/ML pipelines, enabling automated text extraction and semantic understanding; personally tested 10+ iterations and achieved 90% quality score
- Implemented vector database-based retrieval mechanisms to enhance contextual search and response accuracy
- Built and deployed the application using the Streamlit framework, ensuring an interactive UI and seamless user experience
- Enhanced application performance and usability by combining GenAI models with a scalable backend design
- 10 Months
Cisco
- Worked as a Backend Developer on the Cisco account, building and managing REST APIs for device status monitoring and data retrieval
- Developed API services to track and validate real-time device and network equipment status
- Implemented data processing logic to ensure accurate reconciliation and monitoring of device information
- Collaborated with cross-functional teams to deliver scalable backend solutions and improve system reliability
- Optimised API performance and response time to support high-volume data operations
- 22 Months
Education
B.Tech/B.E. - Electronics/Telecommunication
GLA UNIVERSITY
01-2018
Skills
Front-end and back-end development
Requirement gathering and analysis
Django framework expertise
Python software development
FastAPI development
Application development
Project coordination
Proficient in NumPy & Pandas
Certification
Pursuing a Data Scientist and AI ML course from IIT Guwahati
Timeline
Technology Lead
Infosys
02.2025 - 02.2026
Software Developer
Tata Consultancy Services(TCS)
09.2018 - 02.2025
Sodexo
Cisco
Verizon
B.Tech/B.E. - Electronics/Telecommunication
GLA UNIVERSITY