Qun Teng

10+ years building and operating Java/Spring microservices in AWS for e‑commerce/supply chain. Event‑driven architectures with Kafka; CI/CD; observability. Track record in latency reduction (12s → ~100ms), fault‑tolerant workflows, and large‑scale integrations. Strong collaborator/mentor; owns design, code quality, and reliable releases.

Software Developer Engineer, ROSE (Reverse Operations Enterprise Platform) Platform at Nordstrom (2023 – Present)

Operate Java/Spring microservices on AWS with Kubernetes (EKS) and Docker; own build/release and production readiness for returns services.

• Led integration of ROSE with a new warehouse management system; delivered modular, extensible, and resilient services across upstream (Purchase History, OMS) and downstream warehouse systems (WCOC WMS, WMI) for WCOC, ECFC and MWFC sites.
• Built event‑driven communication for all returns‑related events via Kafka; enabled reliable cross‑domain orchestration and replayable workflows.
• Reduced return‑label print latency from 12s to 100ms through API redesign, async processing, and caching—improving warehouse throughput and CX.
• Drove dashboards, real‑time alerting, and runbooks with New Relic and Grafana; improved on‑call response and uptime.
• Mentored contractors/juniors; led design reviews and set coding/testing standards. Partnered with product/ops to align SLAs and delivery timelines.
• Tech: Java, Spring Boot, AWS (EC2/S3/IAM/SQS), EKS/Kubernetes, Docker, Kafka, DynamoDB, Terraform, CI/CD, New Relic, Grafana.

Senior Java Microservices Developer at Randstad (2020 – 2023)

Built highly available merchandise returns microservices on AWS using Spring Boot, Kafka, DynamoDB; owned design through production.

• Implemented CI/CD pipelines and operational metrics/alerts; improved deployment frequency and MTTR.
• Tech: Java, Spring Boot, REST, Kafka, DynamoDB, AWS, Terraform, Jenkins, Docker.

Software Development Engineer at Expedia Group (2013 – 2020)

Delivered lodging pricing/availability/tax services at scale (Scala/Java) in AWS with full CI/CD.

• Designed gRPC/Protobuf and HTTP APIs; led secure inter‑service comms (HTTPS/SSL) and cloud migration integrations.
• Tech: Scala/Java, Microservices, AWS (EC2, S3, SQS, SNS), Terraform, Maven, Jenkins, Grafana/Nagios/Icinga, gRPC/Protobuf.

SDE, Bing/BICI at Microsoft(contractor)

data warehouse/ETL, OLAP, test automation, SLA measurement.

SE/BSA at Taproot Foundation

Salesforce‑based CRM and data integrations.

SDE at Consortio & Galleon high‑volume e‑commerce and distributed middleware (Java, SOAP/REST), order/fulfillment systems.

Master in Computer Science – University of Pierre and Marie Curie

Bachelor in Electronic Information Engineering – Beijing University of Post & Telecommunications