Abbas Khan — Full Stack Engineer

Software Development Engineer @ Amazon with 2.5+ years of experience building and operating large-scale distributed systems across Worldwide Returns & Recommerce (WWRR), Expansions Tech & Product, and Pricing platforms, powering customer-facing return, refund, and pricing experiences across global marketplaces. I’m a backend-heavy Java engineer with strong end-to-end ownership — from HLD/LLD and API design through implementation, deployment, and on-call operations. I’ve owned and delivered core Customer Return Experience (CREX) features (Return Items, Post-Return Experience) and designed reusable, widgetised architectures to improve consistency, reuse, and developer velocity at scale. In WWRR, I helped redesign the Online Return Center (ORC) customer pages and backend contracts, enabling cleaner service boundaries and domain models. This reduced coupling and cut change-related defects by ~25% while supporting millions of annual return events. I built two internal, customer-facing APIs following AWS engineering and security standards, and led integrations with external clients to automate migration from deprecated packages to newer platforms, reducing manual effort and improving maintainability. I drove enhancements to returns and refunds orchestration, improving return completion rates and reducing downstream reprocessing and customer re-contact. This included strengthening refund notifications, adding refund SLA validation, and integrating a new payment instrument , supporting millions of dollars in annual refund volume. I also contributed to MTRI return flows, integrating backend orchestration with agentic LLM workflows using Amazon Bedrock, reducing incorrect refunds and manual reviews and contributing to ~$5–10MM in annualized savings. On the Pricing platform, I designed pricing entities and filtering logic for offer disqualification (FOD) and merchant selection. Across Expansions and Pricing, I built event-driven, resilient services for new marketplace launches, achieving ~20–30% reduction in failure retries, improved P99 latencies, and lower on-call load. I have a proven track record of delivering measurable business impact, obsess over customer success, enjoy solving complex technical challenges, and am passionate about mentoring peers. Tech: Java, Spring, Microservices, Kafka, AWS (ECS, Lambda, DynamoDB, SNS/SQS, S3, OpenSearch, CloudWatch,Scala, Typescript, JavaScript.

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer with expertise in E-commerce and Cloud-based solutions.

Location: Hyderabad, Telangana, India

Experience: 2 yrs 11 mos