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Zhicheng Zhong

New York|Open to Relocate|202-725-1579|portfolio|zzcjob397@gmail.com

Experience

Madison-DavisOct 2024 - Present
Software DeveloperNew York, NY
  • Drove the migration of monolithic payment orchestration services into horizontally scalable microservices using Java, Spring Boot, Cassandra, Oracle DB, and OpenShift (Kubernetes), enabling 3x peak traffic growth and eliminating peak-hour throughput bottlenecks.
  • Implemented Transactional Outbox + CDC (Debezium) to decouple receipt generation from payment processing, publishing domain events to Kafka with at-least-once delivery and idempotent consumers, achieving over 99% successful notification delivery.
  • Built fault-tolerant retry, exponential backoff with jitter, DLQ routing, and replay mechanisms for distributed payment workflows, reducing long-tail notification failures by ~90%.
  • Partnered with infrastructure, QA, and application teams to support CAT & production releases, troubleshoot payment processing issues, and ensure high service availability across multiple deployment environments.
FiservJuly 2023 - Oct 2024
Software EngineerBerkeley Heights, NJ
  • Developed a Redis cache-aside layer in Java (JavaEE) to reduce database reads for client configurations, cutting average API latency by over 50% and restoring SLA compliance.
  • Built a Kafka reconciliation service to validate configuration propagation from Kafka to Redis across time windows, detect persistent inconsistencies, and trigger re-runs to restore production data correctness.
  • Implemented a high-throughput Kafka consumer group with 100-message batch processing to ingest configuration updates into Redis, sustaining ~10k msgs/sec under production load.
TencentJuly 2020 - Oct 2020
Backend Developer InternshipShenzhen, China
  • Refactored a KPI anomaly detection platform for QQ Browser using Go and gRPC, enabling minute-level multi-algorithm anomaly detection and root cause analysis with results persisted in Druid OLAP DB, cutting KPI triage time from hours to minutes.

Projects

Options Market Intelligence Agent
  • Built a Python and FastAPI options research service that retrieves portfolio holdings, computes GEX, VEX, and historical/current IV metrics, and generates interactive heatmaps for pre-market analysis.
  • Integrated the Gemini API to analyze volatility and portfolio positioning, producing structured reports with market outlook, support/resistance levels, volatility regime assessment, and risk-aware portfolio insights.

Skills

Languages: Java, Python, Go

Backend & Distributed Systems: Spring Boot, RESTful APIs, Microservices, gRPC, Kafka

Databases: SQL, MySQL, PostgreSQL, MongoDB, Redis, Oracle DB, Cassandra

Cloud & DevOps: AWS (EC2, S3, RDS, IAM), GCP, Docker, Kubernetes, OpenShift, Helm, CI/CD

Development & Testing: Git, Scrum, Unit Testing, VSCode, IntelliJ

AI: RAG, LangChain, LangGraph, Vector Search, Prompt Engineering, Codex, Cursor, Claude

Education

Georgetown University, Washington, D.C - M.S. in Computer Science

Aug 2021 - May 2023

Nankai University, Tianjin, China - B.S. in Computer Science

Sep 2017 - Jun 2021

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