Rohit Kumar
Backend Engineer with 5+ years of experience building scalable, high-performance systems and APIs
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About
Backend Engineer with 5+ years of experience building scalable, high-performance systems and APIs using Python, Django, and REST APIs. Experienced in backend architecture, ETL pipelines, performance optimization, and high-traffic production systems, with hands-on exposure to AWS, caching, reporting dashboards, and automation workflows. Worked across fintech, telecom, AI-driven, and healthcare & beauty domains, delivering reliable, scalable, and user-centric solutions.
Experience
Senior Backend Engineer / Developer - VLCC Limited - New Delhi, India
(2025-06 - 2026-04)
- Built high-availability backend systems and RESTful APIs handling high-volume production traffic, improving performance via PostgreSQL optimization and caching.
- Architected an end-to-end appointment booking system with analytics integrations and developed ETL-based reporting pipelines, dashboards, and scheduled Cron/Celery workflows for operational insights and business reporting.
- Developed recommendation system, enhanced CRM features, and built student portfolio and job discovery features for VLCC Institute from scratch.
Backend Engineer / Developer - Calance Software Pvt. Ltd. - New Delhi, India
(2022-10 - 2025-05)
- Designed and implemented backend APIs and services for CRM and AI platforms, modularizing complex business logic and improving system performance.
- Built data visualizations and reporting dashboards using Metabase.
- Led backend development for an attendance management system (POC).
- Collaborated with DevOps to streamline CI/CD pipelines and deployment cycles.
Software Engineer - Arithbox Technologies Pvt. Ltd. - New Delhi, India
(2022-06 - 2022-10)
- Developed backend components for a financial CRM platform.
- Automated business reporting via Metabase dashboards.
- Optimized SQL schema for improved transactional efficiency.
Big Data Engineer - Wipro Technologies Pvt. Ltd. - New Delhi, India
(2021-03 - 2022-04)
- Built and managed ETL pipelines using Talend Open Studio for telecom datasets.
- Automated Hadoop HDFS job monitoring, reducing manual overhead.
- Enhanced data stream performance for near real-time (NRT) systems.
Education
B.Tech - Information Technology - Inderprastha Engineering College, AKTU-UP (2016 - 2020)
Senior Secondary (XII) - Science - Columbia Foundation Sr. Sec. School (2014 - 2016)
Secondary (X) - Columbia Foundation Sr. Sec. School (2012 - 2014)
