Tahir Mirza
Backend Engineer • Distributed Systems • Payments
Mumbai, India • mirzatahirinterview@gmail.com • +91-9920512321

About

Backend Engineer with 11+ years of experience designing and operating high-scale, low-latency systems across AdTech, Payments, and Subscription platforms. Strong focus on distributed systems, event-driven architectures, and API design. Proven track record of building systems handling millions of users, improving latency, reliability, and throughput.

Core Skills

Java (8–21) Spring Boot Microservices REST APIs Distributed Systems Event-driven Architecture Redis (Caching) Kafka AWS (S3, EKS, DynamoDB, SQS, SNS, SES, Redshift) Docker Kubernetes Oracle PostgreSQL MongoDB DynamoDB New Relic Kibana CI/CD TDD System Design

Experience

Lead Consultant – Thoughtworks
Oct 2024 – Present
  • Designed microservices for membership lifecycle, payments, and recurring billing using Spring Boot, DynamoDB, SNS/SQS.
  • Built scalable billing and vendor integration flows with async messaging, idempotency, and failure recovery.
  • Worked on BFF layer using Golang for API aggregation and orchestration.
  • Modernized legacy services into AWS-native microservices improving reliability and scalability.
Senior Backend Developer – MX Player
Mar 2021 – Sep 2024
  • Built AdTech services handling ~800K requests/min with ~5ms latency.
  • Improved frequency capping accuracy from 67% → 99% using Redis-based design.
  • Designed segmentation pipeline processing 30M+ daily updates.
  • Led performance tuning and production stability for high-throughput systems.
Associate – J.P. Morgan Chase
Nov 2019 – Mar 2021
  • Modernized payments reporting systems with microservices.
  • Automated financial workflows improving scalability and audit visibility.
Engineer – Persistent Systems & John Deere
2014 – 2019
  • Built REST APIs and integrations (ServiceNow, Salesforce, Zendesk).
  • Migrated legacy apps to cloud-ready microservices.

Highlights

High Throughput Systems

Designed services handling hundreds of thousands of requests per minute with low latency.

Distributed Systems Expertise

Hands-on with event-driven systems, messaging, caching, and scaling strategies.

Payments & Billing

Experience building resilient payment flows, billing systems, and vendor integrations.

Cloud-Native Architecture

Designed AWS-based systems using EKS, DynamoDB, SQS/SNS for scalable infrastructure.

Education & Awards

B.E. Computer Engineering – University of Mumbai (2014)

• Value Award – MX Player

• Going Above and Beyond – JP Morgan