Sagar Kalra
Senior Java Backend Developer | Java, Spring Boot, Microservices, Kafka, AWS | EPAM | Ex-Paytm | Oracle Certified
- Role
- Software Engineer - A2 at EPAM Systems
- Location
- Gurugram, HR, IN
- LinkedIn followers
- 500 followers
About Sagar Kalra
Senior Java Backend Engineer with 5.5+ years of experience building scalable, high-availability backend systems using Java, Spring Boot, and Microservices.Currently working at EPAM Systems, with prior experience at Paytm and LTI, contributing to FinTech, payment platforms, and enterprise-scale systems. I have hands-on experience in API design (REST & GraphQL), distributed systems, Kafka-based integrations, and cloud-native applications.Key Achievements & Impact• Led development of a Virtual Assistant for Expedia, reducing customer support calls by ~30%• Achieved 90%+ issue resolution success rate, improving customer experience• Built and scaled payment and middleware services handling high-volume transactions• Improved code quality, performance, and reliability through design patterns, testing, and monitoring• Actively supported production systems using Splunk and Datadog, ensuring system stabilityI am an Oracle Certified Java Developer, experienced across the full backend lifecycle—from system design and development to testing, CI/CD, monitoring, and production support, using Docker, AWS, and modern DevOps practices.I enjoy solving complex backend challenges, building reliable systems at scale, and continuously improving code quality and system performance.Open to opportunities involving Java backend, microservices, and cloud-native architectures.
Experience
Software Engineer - A2
Sep 2023 — Present · Gurugram, IN
Led development of a Virtual Assistant for Expedia, supporting booking modifications and cancellations• Reduced customer support calls by ~30% through automation• Achieved 90%+ issue-resolution success rate, improving customer satisfaction• Monitored and debugged production issues using Splunk and Datadog• Collaborated with cross-functional teams on scalable backend delivery
Education
PEC University of Technology, Chandigarh
Mechanical Engineering, Btech
2016 — 2020
O.S.D.A.V. Public School
10
2013 — 2014
OSDAV Public School
12, Non medical
2015 — 2016
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