SK

Sachin Kumar

Available to hire

I’m Sachin Kumar, a backend developer with 5+ years of experience building scalable APIs and integrating enterprise e-commerce platforms.

About

I’m Sachin Kumar, a backend developer with 5+ years of experience building scalable APIs and integrating enterprise e-commerce platforms. I specialize in REST-based integrations, system design (HLD/LLD), and backend performance tuning across MySQL, Redis, RabbitMQ, and cloud services like AWS.

In my recent work, I’ve supported Adobe Commerce and Magento-based solutions by diagnosing integration and repository issues while keeping high availability, and I’ve optimized queries and caching strategies to reduce API latency. I also design end-to-end features (like registry and tracking/notification flows), build middleware to synchronize catalogs and inventory across marketplaces, and troubleshoot complex production bottlenecks to keep systems reliable for US/UK clients.

  • 5 years' experience
  • Joined October 2026

Languages

  • EnglishFluent
  • GermanIntermediate
  • HindiFluent

Industry experience

  • Software & Internet
  • Retail
  • Gaming

More experts in Lucknow, India

Work experience· 4 roles

Senior Engineer - Adobe Commerce & Backend · GlobalLogicJun 2025 – May 2026 · 1 yr

Diagnosed Adobe Commerce integration and core repository issues while maintaining 99.9% availability. Resolved application and infrastructure failures involving MySQL, Redis, RabbitMQ, AWS, and SendGrid. Optimized database queries and caching using LLD principles to reduce API response latency and improve overall system reliability.

Magento / Backend Developer · Yellow Sapphire TechnologiesMar 2024 – Dec 2024 · 10 mos

Designed end-to-end architecture for a Bed Bath & Beyond Gift Registry feature. Built RESTful services to handle API workflows for tracking and notifications (up to 1,000 requests). Managed database schemas and optimized MySQL queries for payment and order transaction processing.

Software Developer · CEDCOSS Technologies Private LimitedJan 2022 – Jan 2024 · 2 yrs 1 mo

Designed integration middleware linking e-commerce platforms to marketplaces via REST APIs. Refactored legacy backend code using design patterns to improve scalability and maintainability. Supported US/UK enterprise clients with system integration and deployment troubleshooting.

Software Engineer · Daffodil SoftwareMar 2018 – Nov 2019 · 1 yr 9 mos

Education

Bachelor of Technology (B.Tech) in Computer Science Engineering · Galgotias College of Engineering and Technology2014 – 2018

Certifications and awards

Core & Advanced Java (Incapp)2017
Big Data & Hadoop Systems (Ducat)2019

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