Deepak Keshri

Full Stack Node.js Developer with 5.7+ years designing and building high-performance, reusable components across the stack — Express-based REST APIs, microservices, event-driven systems (Kafka, RabbitMQ), and React.js front ends — serving millions of users across InsurTech, AdTech, E-Commerce, and Food Delivery. Strong in database schema design and ORMs (Mongoose, Sequelize) across PostgreSQL, MySQL, and MongoDB, third-party SDK/API integrations, and unit/integration testing (Mocha, Chai). Comfortable owning code architecture decisions, identifying bottlenecks, and shipping with Docker and CI/CD in fast-moving Agile teams.

Backend Software Engineer - TATA AIG General Insurance Co. Ltd. - Gurgaon, Haryana

(2024-03)

• Lead a cross-functional team of 6 engineers architecting and deploying Node.js/Express microservices and serverless functions on AWS, cutting infrastructure overhead by 30% through optimized cloud resource utilization.
• Engineered a serverless, event-driven automated workflow handling 10K+ daily requests, integrating third-party SDKs/APIs and cutting processing time 98% (2 hrs to under 1 minute) while reducing manual intervention by 70%.
• Refactored 15+ legacy backend services applying object-oriented design principles and modern architecture patterns, improving reliability, fault tolerance, and production performance.
• Improved REST API response times by up to 40% through query tuning, strategic indexing, and database schema redesign across 5+ enterprise applications.

Backend Engineer - Psiborg Technology Pvt. Ltd. - Noida, Uttar Pradesh

(2022-12 - 2024-02)

• Managed a backend engineering team of 4 across sprint planning, code reviews, and reusable Node.js/Express modules and shared libraries, accelerating delivery velocity by 35%.
• Engineered MongoDB schemas with indexing, normalization, and sharding strategies, boosting query throughput 60% and supporting large-scale data operations exceeding 5M+ records.
• Built a multi-vendor food delivery platform integrating Uber Eats/Deliveroo APIs (50+ restaurant partners, WebSocket-based live tracking) and a full-stack DOOH advertising platform with IoT integration across 200+ billboards, boosting advertiser retention by 20%.

Full Stack Developer - Zirango Software & Tech. - Varanasi, Uttar Pradesh

(2021-01 - 2022-12)

• Built a feature-rich e-commerce platform with responsive React front-end UI/UX, PCI-compliant payment workflows, and dynamic product-discovery/filtering algorithms, cutting cart abandonment 22% and lifting conversion 18%.
• Set up server monitoring, security compliance practices, and automated CI/CD deployment pipelines, maintaining zero critical outages through the production lifecycle.

Bachelor of Computer Applications - BCA - Mahatma Gandhi Kashi Vidyapith (2019 - 2022)