Deepika Masilamani

I’m a staff-level backend engineer with 10+ years of experience designing and evolving distributed, cloud-native systems. I drive architectural direction for high-scale platforms by defining clear domain boundaries and making technical decisions that balance scalability, reliability, and long-term business outcomes.

At Equal Experts, I’m operating in a technical leadership capacity—architecting subscription and installment payment capabilities to support 10,000+ merchants and hundreds of thousands of customers. I’ve led plan management and order lifecycle design using Hexagonal Architecture, introduced a centralized notification system across services, and coordinated API contracts and lifecycle events in a distributed, multi-team environment.

At Thoughtworks, I co-architected event-driven microservices on GCP for a marketing communications platform serving 10M+ customers, reducing campaign processing time from 24 hours to 2 hours. I also decomposed a legacy monolith into modular services, defined Terraform-based infrastructure and CI/CD pipelines, and mentored engineers on TDD and clean architecture to raise engineering standards.

Across recruiting systems and earlier CRM work, I’ve led backend and data platform evolution—building ETL pipelines and BigQuery analytics for near real-time insights while doubling recruiter productivity and reducing cloud costs by 30%. I’m known for strengthening engineering standards, mentoring engineers, and enabling teams to deliver maintainable, resilient systems end-to-end.