Mehrab
Mohammad-Hosseini

Jul 2026 — Present

Senior Full-Stack Software Engineer

Snapp.ir

Current

Building backend services for Snapp's Users Vertical, Passenger Profile team, focusing on reliability, scalability, and user-facing platform capabilities within a distributed microservices architecture. Working within a distributed microservices architecture, multi-tenant system, delivering production-grade software with comprehensive DevOps practices, CI/CD pipelines, and end-to-end high-coverage test integration.

Aug 2023 — Present

Senior Software Engineer

Digikala.com

Led the design and evolution of core pricing systems in the Pricing and Promotions squad, powering large-scale e-commerce operations. Directed architectural improvements, domain refactoring, and automation initiatives that reduced manual operational effort while enhancing reliability and scalability in distributed systems.

• Led migration from manual pricing workflows to a dynamic pricing system, reducing operational costs by over 50% and improving pricing accuracy across more than 10,000 SKUs.
• Refactored legacy pricing and validation logic into domain-driven services, achieving average response times under 30ms between microservices.
• Designed an intelligent auto-approval and rejection engine for the Reference Price Ticketing system, reducing manual review workload by ~80%.
• Enabled high-volume price updates for 5 million products to complete in under 15 minutes during peak events like Black Friday.
• Mentored junior engineers through code reviews, design discussions, and architectural guidance to elevate team quality.
• Initiated test coverage of the domain from 0% to 30% through test automation and CI/CD pipeline improvements.

Sep 2022 — Aug 2023

Software Engineer

Digikala.com

Served as a backend engineer in the Promotions and Adservice domain, contributing to large-scale e-commerce systems serving millions of users. Focused on building reliable backend services and supporting business-critical workflows in a mature Scrum environment.

• Developed and maintained backend services for promotions, discounts, and product variant management, incorporating over 20 REST APIs for promotion enrollment and discount management.
• Implemented competitive price crawling pipelines to collect reference prices from external sources, enhancing pricing accuracy and minimizing misleading discounts.
• Optimized system behavior under high load, managing performance for tables exceeding 5 billion rows of data.
• Collaborated in a cross-functional Scrum team with product managers and designers to deliver iterative improvements with predictable release cycles.

Mar 2022 — Sep 2022

Junior Backend Developer

Bdok.ir

Contributed to the development of a multi-tenant e-commerce platform, supporting core backend services and infrastructure for creating and managing online shops at scale.

• Designed and implemented backend services for a multi-tenant e-commerce platform, enabling independent storefronts with shared infrastructure for over 5,000 shops.
• Integrated asynchronous backend architectures to enhance request handling and system responsiveness under high I/O throughput.
• Developed and maintained API-based integrations with external delivery services, aligning internal workflows with third-party contracts.