Summary
Overview
Work History
Education
Skills
Timeline
Generic

Mengyi Chen

Santa Clara

Summary

Experienced Software Engineer with 5 years of hands-on backend development experience, specializing in Java Core and Spring.

Demonstrated industry-level skills in algorithm/OOD/system design implementation.

Overview

5
5
years of professional experience

Work History

Software Engineer

Walmart Global Tech
Sunnyvale, CA
04.2022 - Current
  • Core member of a Tier-0 Pricing Engine (handles million-dollar requests daily) — owned design and delivery of highly scalable stateless services and REST APIs that form the heart of Walmart Last-Mile; contributed to platform improvements that supported up to $80M annual cost savings.
  • Led integration of Agentic AI orchestration and ML model outputs into the pricing/decision pipeline; translated model targets into real-time price multipliers, operationalized guardrails, and drove A/B / switchback experiments to measure impact on acceptance rate, cost-per-trip and on-time delivery.
  • Architected last-mile trip and routing models (multi-pickup clustering, slot weighting, batching, multi-pickup trip upgrades) to reduce cost, speed deliveries and increase delivery success / on-time rates; Primary owner of Shopper features and Rx Delivery.
  • Managed CI/CD releases, containerized deployments on Kubernetes (GCP/Azure), introduced CosmosDB integration for improved data retrieval and stability; served on on-call rotations providing Tier-0 troubleshooting and incident remediation, reduced MTTR via dashboards and alerts, leveraging tools like Grafana, Prometheus and Dynatrace.
  • Partnered closely with Business, Product and Program teams to deeply understand commercial requirements and translate them into clear execution language , driving end-to-end product delivery and E2E stakeholder alignment; coordinated international rollouts with Canada, Mexico and India teams to localize features, satisfy compliance, and ensure on-time launches that met operational KPIs .

Software Engineer

EBay Inc
San Jose, CA
06.2021 - 04.2022
  • Worked at the backend Eng team to enable bulk editing capability contextually in Active Listings page of Seller experience.
  • Implemented key features (inline-editing,Auto-save, SearchByIds, Bulk update,etc) to build web applications and RESTful endpoints with SpringBoot framework in order to support bulk editing 2000 drafts/listing at a time.
  • Wrote web service automation code in Java, Junit, Mockito, Selenium, TestNG for RESTful Services and messaging components that maintaining 100% passed rate.
  • Orchestrated comprehensive testing procedures, including regression, smoke, and end-to-end (E2E) tests, guaranteeing the stability and reliability of the developed features. Led the charge in the rollout process and production release.
  • Demonstrated adept bug-fixing skills, addressing spikes and reducing event failures by an impressive 25% among millions of requests on the payout platform.

Education

Master of Science - Computer Science

Lawrence Technical University
Southfield
2020

Skills

    Programming Languages: Java, Python, SQL,

    Databases/Cloud: Azure Cosmos DB, Oracle MySQL ,AWS, GCP, Elastic Search, K8s

    Tools/Frameworks: SpringBoot,Spring MVC, Hibernate, Mockito, RESTful,Jenkins,Git,Splunk,TestNG, ChatGPT, Gemini, Claude, Copilot

Timeline

Software Engineer

Walmart Global Tech
04.2022 - Current

Software Engineer

EBay Inc
06.2021 - 04.2022

Master of Science - Computer Science

Lawrence Technical University
Mengyi Chen