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Ashiqul Mostofa

Software Engineer II at Amazon
Amazon
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I am a Software Engineer at Amazon specializing in high-scale distributed systems and cloud-native architecture. Throughout my career at Amazon and Grab, I have focused on solving "impossible" puzzles that sit at the intersection of massive data, complex business logic, and operational efficiency.

Experience

Amazon | Software Engineer

Jan 2022 - Present | Vancouver, British Columbia, Canada

Part of the Fulfillment Execution (FEX) team, contributing to high-priority initiatives that bridge major business units and optimize global logistics.

  • Technical Design Lead: Led technical workstream for a major architectural convergence between two of Amazon's largest retail entities. Authored core design documents and service contracts that provided architectural blueprint for over 15 neighboring engineering teams.

  • System Design & Optimization: Architected a mission-critical shipment-management service using Java and AWS Lambda. Optimized key performance metrics to organizational highs, resulting in significant annual logistics savings and creating a new framework for cross-channel experimentation.

  • Hardware & Infrastructure Focus: Managed team's hardware strategy for over a year, spearheading a successful migration from legacy load balancers to AWS Target. Re-architected fleet configurations on AWS ECS to improve system efficiency and reduce annual overhead.

  • Peak Capacity Planning: Provided data-driven resource forecasting for global sales events (Prime Day, Black Friday), ensuring seamless system availability and performance during peak traffic volumes.

  • Team Mentorship: Collaborated with junior engineers and interns to implement rigorous production-grade standards for system design and automated testing.

Grab | Software Engineer

Jul 2018 - Dec 2021 | Singapore

  • High-Scale Reliability: Managed Golang-based Driver-history and receipt services handling 300 QPS with 99.95% uptime over 2 years, supporting the largest ride-hailing network in SEA.

  • Financial Automation: Developed a full-stack automated statement service for 12 million partners, facilitating weekly income reporting and automated tax submissions via Ruby on Rails and MySQL.

  • Product Innovation: Built MVP for Driver Tipping service, utilizing Redis and REST APIs to significantly increase driver satisfaction and retention metrics.

  • Cost Reduction: Led migration of third-party training vendors to an internal Azure-hosted platform, reducing annual operational expenditure by $1M+.

Works Applications Co., Ltd. | Software Developer

Jan 2016 - Jun 2018 | Singapore

  • Search Backend: Contributed to development of a search backend for enterprise software, improving data retrieval efficiency by indexing large datasets in Elasticsearch.

  • Tooling & Automation: Built internal tools for automated data filtering and operations using Java and Google Closure, reducing manual intervention for support engineering team.

Education

Bangladesh University of Engineering and Technology

Bachelor of Science (BSc), CSE | 2010 – 2015

Skills

  • Distributed Systems
  • Cloud Architecture (AWS)
  • Microservices
  • Java, Golang, Ruby on Rails
  • System Design
  • High-Scale Systems
  • Technical Leadership

With over 9 years of experience scaling microservices and building robust distributed systems, I bring a combination of technical expertise and practical problem-solving skills to every challenge. When I'm not architecting systems, I'm exploring new technologies and contributing to the tech community.