Hanjie Shao

I am a Senior Software Engineer with 9+ years building large-scale distributed systems, ML infrastructure, search/indexing, and fintech platforms. I design and scale data pipelines, low-latency APIs, and cloud-native services using Java, Python, Spark, Kafka, Redis, Cassandra, Elasticsearch, AWS, and Kubernetes.

At Pinterest I owned core ML feature infrastructure and indexing/serving across four product surfaces, implemented online/offline feature pipelines, and developed low-latency feature retrieval APIs to meet stringent P95/P99 SLOs in 24×7 production.

Previously I delivered trust & safety platforms and verification flows at DiDi, and built multi-tenant SaaS billing and payments pipelines for enterprise clients, standardizing event ingestion and batch reconciliations across regions. I emphasize data quality, schema governance, and deep observability to reduce MTTR and prevent breakages.

I collaborate cross-functionally through design docs, RFCs, and blameless retros, mentor engineers, and drive continuous improvement with a growth mindset focused on reliable, scalable systems and measurable business impact.