# Udaya Chandrika Gummuluri > Software Engineer | Python | FastAPI | Django | React | REST APIs | Microservices | AWS | Docker | Kubernetes Location: United States, United States Profile: https://flows.cv/udayachandrikagummuluri Full Stack Python Developer with 4+ years of experience building scalable, high-performance applications and cloud-native systems. Skilled in Python (FastAPI, Django), React, and AWS, with a strong focus on microservices, real-time data processing, and secure fintech solutions. ## Work Experience ### Software Engineer – Full Stack Python Developer @ Fiserv Jan 2024 – Present | United States • Designed and implemented high-performance payment processing APIs using Python (FastAPI, Flask) and PostgreSQL, supporting 100K+ monthly financial transactions with 99.9% system availability. • Developed React + Redux merchant dashboards providing real-time transaction monitoring, payment settlement tracking, and analytics across Fiserv’s payment platform. • Improved backend performance by 35% by implementing asynchronous processing with Celery, Redis caching, and optimized SQL queries. • Built event-driven microservices using Apache Kafka and Python, enabling real-time payment events, settlement processing, and fraud monitoring pipelines. • Containerized applications using Docker and deployed microservices on Kubernetes clusters to enable scalable, resilient deployments. • Implemented cloud infrastructure on AWS (EC2, RDS, Lambda, S3) with Terraform for automated infrastructure provisioning. • Integrated secure authentication and authorization mechanisms (OAuth2, JWT, RBAC) to meet PCI-DSS compliance requirements for financial platforms. • Built CI/CD pipelines using Jenkins, automating testing, builds, and deployments for faster and more reliable software delivery. • Improved system reliability by creating 200+ automated test cases using PyTest, reducing production defects by 35%. ### Software Engineer – Python Full Stack @ Cybage Software Jan 2021 – Jan 2023 | India • Developed backend services for an e-commerce payment dashboard using Django and Django REST Framework, delivering transaction processing and reporting capabilities for 5,000+ users. • Designed and implemented RESTful APIs to integrate third-party payment gateways and internal services for transaction processing and order management. • Optimized PostgreSQL database performance through query tuning, indexing strategies, and ORM optimization, reducing response times by 25%. • Built API aggregation services integrating 10+ third-party APIs and internal services using asynchronous request handling and message queues. • Implemented data indexing and search capabilities using Elasticsearch, enabling efficient querying of transaction and order data. • Collaborated with frontend teams by exposing structured API endpoints and ensuring seamless data integration for dashboard visualizations. • Established CI/CD pipelines using Git and Jenkins, enabling automated builds, testing, and deployments in Linux-based environments. • Developed unit and integration tests using PyTest, improving platform reliability and reducing regression defects during releases. ## Education ### Master's degree in Computer Science The George Washington University ### Bachelor of Technology - BTech in Computer Science and Engineering KL University ## Contact & Social - LinkedIn: https://linkedin.com/in/udayagummuluri --- Source: https://flows.cv/udayachandrikagummuluri JSON Resume: https://flows.cv/udayachandrikagummuluri/resume.json Last updated: 2026-04-16