Overview

Building scalable email marketing infrastructure processing 500k+ emails/day with 99.8% delivery accuracy. Leading technical initiatives across microservices architecture, real-time analytics, and cloud infrastructure.

Technical Leadership

Event-Driven Architecture

Designed campaign pipeline using BullMQ/Redis handling millions of records daily with sub-minute SLAs.

Reduced system downtime by 60% through idempotency, retries, and DLQs.

Separated microservices enabling independent scaling for 100k+ recipient queues.

Performance & Reliability

Cut P95 API latency by 30% via SQL optimization, indexing, and Redis caching.

Improved uptime from 95% → 99.8% using circuit breakers and health checks.

Built webhook system processing 10M+ events/month at 99.9% success rate.

Cloud Infrastructure

Owned AWS (EC2, Lambda, S3, SQS) and CI/CD with Docker/GitHub Actions.

Reduced infrastructure costs by 25% while supporting 3x user growth.

Data Systems

Multi-DB strategy: PostgreSQL (transactional), ClickHouse (analytics), DynamoDB (session).

Real-time analytics with sub-second queries on billions of records.

Platform Engineering

Built REST APIs, partner integrations (Stripe, Shopify), and JWT/OAuth2 authentication.

Established automated testing achieving 85% coverage, reducing bugs by 70%.

Accelerated feature delivery by 2x through CI/CD and coding standards.

Tech Stack

Backend: Node.js, NestJS, TypeScript, REST APIs, GraphQL

Databases: PostgreSQL, ClickHouse, DynamoDB, MySQL

Cloud: AWS (EC2, Lambda, S3, SQS), Docker

Frontend: React, Next.js, Redux, Tailwind CSS

Queues: BullMQ, Redis, SQS