Amit Kumar

Cloud Migration & Cost Optimization

• Spearheaded migration from AWS to Krutrim Cloud, ensuring zero downtime for critical supply systems
• Achieved 30–40% infrastructure cost reduction through architecture optimization and efficient resource utilization

High Availability & Multi-Region Data Strategy

• Designed Active-Active data layer strategies for MySQL and MongoDB, implementing dual-write, bidirectional sync, and conflict resolution (Last-Write-Wins, triggers)
• Ensured data consistency and zero data loss across regions

Traffic Management & Scalability

• Designed city-level traffic splitting strategies using ALB, enabling safe and incremental rollouts with fault isolation

Event-Driven Systems & Platform Strategy

• Designed and implemented event-driven architecture for supply systems using Kafka
• Defined long-term Kafka optimization strategy, including Avro-based schema evolution, to improve scalability and maintainability
• Proposed migration to gRPC-based inter-service communication to reduce latency and improve system efficiency

Platform Migrations

• Led Kafka migration to version 3.7 (KRaft mode), eliminating Zookeeper dependency and improving reliability.Reduced multiple kafka clusters.
• Spearheaded Spark migration from 2.x to 3.x, improving performance and scalability

Reliability & Incident Resolution

• Resolved critical production outage caused by MongoDB spin-loop issue leading to ~1000% CPU utilization
• Implemented permanent fixes and safeguards to prevent recurrence
• Led resolution of multiple high-severity incidents, improving overall system reliability and uptime

Payments & Customer Experience

• Led architecture of Ola Single Sign-On (SSO) for Driver App, increasing login success by ~10%
• Integrated with Razorpay (UPI Intent & Turbo UPI), increasing cashless transactions by 8–10%
• Designed and implemented Coins and Referral systems, improving customer and driver engagement by 5–10%
• Built On-Demand Payment system for drivers, reducing latency and improving payout experience

Platform Architecture

• Designed scalable supply systems handling millions of requests per day
• Contributed to unified payment platform architecture across multiple Ola verticals

Leadership

• Mentored and led 15–20 engineers, driving system design excellence and engineering best practices

• Worked in Transaction Reporting Team.Created Emir, Mifid reports for trades and positions to avoid market abuse and capital abuse.
• Reduced time of consuming 3-4 million data from kafka topics from 30 minutes to 2-3 minutes.
• Trained new developers and programmers on company standards for design and review. Emphasized on clean code practices.
• Involved in getting approval from architect by providing design document with pros and cons. Created Architecture for TRS re arch project.
• Worked in cross functional Agile teams. Made TRS application Resilient and fault tolerant .
• Created Splunk Dashboard and alerts for monitoring logs and identifying any prod issues at the earliest.

• Worked for Goldman Sachs for migrating database from honkong to New York.
• Made system reliable and resilient 24/7 during pandemic, earhquakes.
• Mentored the team members.

• Worked on Avis Budget Group.
• Retention of clients has increased manifold from 40% to 47%.
• Designed internal Vehicle Rental System Project using Spring MVC and presentation layer architecture.