Kangwei Feng
@kangweifeng
Senior Java software engineer building scalable web services and data-driven platforms with strong production ownership.
United StatesWhat I'm looking for
I’m a senior, Java-focused engineer who builds scalable web services and data-driven platforms with strong production ownership. At Apple and Amazon, I delivered telemetry and data-product workflows—turning raw events into reliable pipelines and customer-facing experiences.
I design for performance and reliability with testable code, CI/CD automation, and security-aware access patterns. I’ve owned end-to-end production changes, improving ingestion and processing reliability (including schema validation and backpressure-aware handling) and using health-gated Kubernetes rollouts to minimize regressions.
Across my roles, I’ve built microservice backends and high-volume data pipelines using Apache Kafka and Apache Spark, and I’ve improved system behavior by profiling and tuning down to the Linux/OS level. I also bring security governance to the core of delivery—implementing OAuth 2.0/JWT, TLS, RBAC, and structured audit logging to support traceability and least-privilege access.
Experience
Work history, roles, and key accomplishments
Built and optimized iCloud.com telemetry ingestion and processing flows in Java, improving event reliability and reducing downstream processing latency by 28% through schema validation and backpressure-aware handling. Owned production change delivery via CI checks and automated deployments using Dockerized services and Kubernetes health-gated rollouts, and implemented OAuth 2.0/JWT authentication
Software Engineer II
Amazon Music
Jul 2020 - Feb 2022 (1 year 7 months)
Designed Java microservices for personalized marketing campaigns, enabling near-real-time attribution decisions and improving targeting effectiveness by 19%. Built Spark-based attribution data pipelines that cut end-to-end computation time by 35%, increased automated test coverage to 80% with JUnit/Mockito, and reduced p95 request latency by 24% through Linux-level bottleneck profiling and concurr
Delivered a full-stack chatbot experience for Fusion project management by combining Node.js backends with web and mobile clients, improving task guidance adoption by 17%. Implemented Oracle Digital Assistant capabilities across channels with robust error handling to reduce user-facing failures, and optimized frontend performance by addressing rendering bottlenecks and improving resource loading s
Education
Degrees, certifications, and relevant coursework
Carnegie Mellon University
Master’s Degree, Information Technology
2015 - 2016
Completed a Master’s degree in Information Technology at Carnegie Mellon University from 2015 to 2016.
Xiamen University
Bachelor’s Degree, Statistics
2011 - 2015
Completed a Bachelor’s degree in Statistics at Xiamen University from 2011 to 2015.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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