Alex Chen

Senior Backend Developer specializing in high-throughput Java ecosystems, distributed architecture, and cloud-native solutions.

Professional Experience

Senior Backend Engineer

JAN 2021 — PRESENT
CloudTech Solutions
  • / Led successful migration of monolithic billing engine to a reactive microservices architecture using Spring Boot 3 and Java 21.
  • / Optimized legacy SQL queries and implemented Redis caching, resulting in a 40% reduction in API latency.
  • / Architected an event-driven data pipeline with Apache Kafka processing 10k+ messages per second.
Spring Boot Java 21 Redis Kafka Microservices PostgreSQL

Java Software Developer

JUN 2018 — DEC 2020
FinStream Systems
  • / Developed core banking features for high-security transaction processing using Hibernate/JPA.
  • / Reduced system downtime by 15% through the implementation of automated health checks and circuit breakers.
Java 11 Spring Hibernate JPA MySQL Docker

Technical Stack

Persistence & Data

  • PostgreSQL
  • MongoDB
  • Hibernate/JPA
  • Redis
  • Flyway
  • Liquibase

Cloud & DevOps

  • AWS (EC2, S3, RDS, Lambda)
  • Kubernetes (EKS)
  • Docker
  • Terraform
  • GitHub Actions

Architecture

  • Microservices
  • Event-Driven
  • REST
  • gRPC
  • GraphQL
  • DDD
  • SOLID
  • Clean Arch

Education

M.Sc. in Computer Science

Honors

Technical University of Berlin • 2018