Subham Panda

01. About Me

I'm a passionate Software Engineer with 3 years of experience in building scalable enterprise applications and microservices. Currently working at Paytm, where I architect backend systems for a SuperApp serving international users and build marketing automation platforms.

My journey in tech started with a B.Tech degree and was further strengthened through intensive training at Masai School. I specialize in Java, Spring Boot, and Kafka, designing microservices architectures, and building fault-tolerant distributed systems.

I thrive on solving complex problems and building systems that make a real impact. Whether it's reducing API response times from 800ms to 280ms or architecting workflow engines with 99.9% uptime, I'm always eager to push the boundaries of what's possible.

              10K+
              Events Processed Monthly
            

              99.9%
              System Uptime
            

              60%
              Campaign Setup Time Reduced
            

              3+
              Years Experience
            

02. Work Experience

Paytm

Software Engineer • Bengaluru, India

Feb 2025 - Present

▹ Architected and engineered a scalable backend for a SuperApp serving international prepaid and postpaid SIM users, facilitating personalized user experiences and seamless integration of mobile recharges and entertainment services.
▹ Delivered an enterprise marketing automation platform processing 10K+ customer lifecycle events monthly, reducing manual campaign setup time by 60% and enabling real-time personalized communications across multiple channels (Email, SMS, WhatsApp).
▹ Built a fault-tolerant workflow orchestration engine using Temporal.io and Kafka, achieving 99.9% uptime while executing 2K+ daily workflows with automatic retry mechanism.
▹ Designed scalable microservices architecture leveraging Spring Boot. Implemented end-to-end distributed tracing across microservices using Micrometer, OpenTelemetry, and Zipkin, achieving full request visibility and faster root-cause analysis across services.
▹ Improved system performance by implementing Redis distributed caching and optimizing event routing, reducing API response times from 800ms to 280ms and significantly enhancing overall system responsiveness.

Java Spring Boot Kafka Temporal.io Redis OpenTelemetry Microservices

Quicktouch Technologies Limited

Software Engineer • Delhi, India

May 2023 - Feb 2025

▹ Contributed to the development of a cloud-based School ERP used by 3,500+ schools, by collaborating closely with cross-functional teams.
▹ Designed and implemented a recruitment portal enabling job creation with category-based fee concessions and allowing applicants to apply and track application status, streamlining the hiring workflow.
▹ Integrated WhatsApp across core modules to deliver real-time notifications and automated updates, improving information dissemination and driving a 25% increase in user engagement and responsiveness.

Java Spring Boot REST APIs MySQL WhatsApp API

03. Featured Projects

Featured Project

LLA SuperApp

A scalable backend for a SuperApp serving international prepaid and postpaid SIM users, consolidating telecom APIs and enabling personalized user experiences with mobile recharges and entertainment services.

Multi-tenant utility proxy consolidating telecom REST and SOAP (LIMEware) APIs
Database-driven per-API config for timeouts, retries, and credentials
Concurrent home screen aggregation using CompletableFuture across Prepaid, Postpaid, and Fixed LOBs
AOP-driven audit logging capturing traceId, response time, and payload to MySQL

Java Spring Boot REST APIs CompletableFuture MySQL AOP

Marketing Automation Platform

Enterprise marketing automation platform processing 10K+ customer lifecycle events monthly, reducing manual campaign setup time by 60% with real-time personalized communications across Email, SMS, and WhatsApp.

Temporal.io Kafka Spring Boot

Workflow Orchestration Engine

Fault-tolerant workflow system achieving 99.9% uptime, executing 2K+ daily workflows with automatic retry mechanism, built using Temporal.io and Kafka.

Temporal.io Java Distributed Systems

School ERP & Recruitment Portal

Cloud-based School ERP used by 3,500+ schools with a recruitment portal enabling job creation with category-based fee concessions and application tracking.

Spring Boot REST APIs MySQL WhatsApp API

04. Skills & Technologies

Languages

Java JavaScript

Frameworks & Technologies

Spring Boot Spring MVC Spring Security REST APIs Microservices Kafka

Databases

MySQL PostgreSQL Redis

Tools & Platforms

AWS Git/GitHub Jenkins CI/CD Bitbucket Postman Grafana Vault IntelliJ Jira

Core Concepts

Data Structures & Algorithms Object-Oriented Programming System Design SOLID Principles Microservices Architecture Multithreading Concurrency

Software Engineer @Paytm