# Zhikun Han

> Software Engineer | Backend / Platform | Authentication, Fraud & Data Security | Scaled Systems

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/zhikunhan

Backend / platform-focused software engineer with 4+ years of experience building authentication, fraud prevention, and data security systems for large-scale production environments.

Currently working at a growth-stage fintech on shared backend platforms, internal tooling, and reliability-critical services with on-call ownership.

Interested in backend, platform, or infrastructure roles at mid-to-large product-driven companies.

## Work Experience
### Software Engineer @ Atlas
Jan 2025 – Present | San Francisco Bay Area
Working on backend and platform systems focused on authentication, fraud prevention, and data security in a production fintech environment.

Contributed to scaling core backend services during a period of rapid growth, including improvements to internal tooling, reliability-critical workflows, and operational security.

Participate in on-call rotation and collaborate closely with cross-functional teams to maintain system reliability and support high-volume operations.

### Software Engineer @ Tingono
Jan 2021 – Jan 2025 | San Francisco Bay Area
Worked on backend systems and cloud infrastructure in a SaaS environment, contributing to the development of core product features and data pipelines.

Built and maintained RESTful APIs, background processing jobs, and messaging systems, and supported production reliability through CI/CD and monitoring.

Collaborated with product and engineering teams to deliver features from early design through production.

### Full Stack Web Developer Intern @ Tuka Global
Jan 2021 – Jan 2021
Worked on a full-stack web prototype using MongoDB, Express.js, React, and Node.js, contributing to early product development and feature implementation.

Built RESTful APIs and backend services for user and content management, and collaborated with designers to deliver frontend features.

Deployed and maintained the application on AWS EC2 with NGINX, supporting basic scalability and availability for a production prototype.


## Education
### Master's degree in Spatial Data Science
University of Southern California

### Hohai University


## Contact & Social
- LinkedIn: https://linkedin.com/in/zhikun-han-5a983915a

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Source: https://flows.cv/zhikunhan
JSON Resume: https://flows.cv/zhikunhan/resume.json
Last updated: 2026-04-05