Hema Kumar

Backend Developer with 3+ years of experience building scalable, high-performance backend systems. Improved API latency by 40% and reduced server response time by 30% through optimized architecture and automation. Skilled in Node.js, TypeScript, AWS, microservices, distributed systems, and CI/CD, with a proven ability to design reliable, secure, and production-ready services.

Backend Developer at Willeder Inc (2023-10 – Present)

Building scalable backend systems and implementing robust validation and monitoring pipelines

• Implemented robust validation and monitoring pipelines, reducing service error frequency by 35% across critical APIs.
• Enhanced MongoDB aggregation pipelines, cutting query execution time from 2.4s to under 120ms.
• Enabled Firebase Cloud Messaging (FCM) to deliver bulk push notifications efficiently using a queue-based system.
• Built a microservice using BrightData third-party API to fetch influencer data from social media platforms, ensuring reliable and structured data ingestion.
• Deployed Prometheus and Grafana with centralized log streams, increasing observability across services and enabling rapid diagnosis of issues, including the resolution of five major production defects.

Backend Developer at Primates Development Pvt Ltd (2022-09 – 2023-10)

Database optimization and CI/CD pipeline automation

• Solved database queries and caching mechanisms for a 30% reduction in server response time.
• Refactored and optimised complex SQL Server queries on AWS, boosting data retrieval speed by 45% and reducing operational costs by 40%.
• Automated CI/CD pipelines using GitHub Actions, saving 20 hours/month in deployment time for rapid, reliable releases.

Bachelor of Engineering in Computer Science – Global Institute of Engineering and Technology (2018-08 – 2022-07)