Ireland

Back-end

Data Engineering

Bachelor's degree

Chih-Chung Kuo

Staff Software Engineer

Problem-solving

Leadership

Python

Apache Spark

GitHub

Golang (Go)

HTML

Jira

Lucidchart

Notion

REST API

Redis

RabbitMQ

PostgreSQL

Kafka

• Developed and maintained an EC platform with > 6million active users, >1 million orders per day over 8 regions.
• Languages: Python 2 with Django, Golang.
• Techstack: MySQL, TiDB, ElasticSearch. Kafka, RabbitMQ. Memcache, Redis, Codis. Nginx.

• Lead 13 people team with guidance, task distribution, cross-team coordination, and decision making.
• Conduct feasibility studies of proposed new features/projects with product managers, provide technical advice, discuss with multi-parties, and arrange resources of development.
• Design system architecture, initiate technical projects to escalate product qualities, and oversee all accounting projects. Aim for providing robust and reliable services, which has high availability, scalability, flexibility, and high performance.
• Design and execute the whole plan of migrating Databases/API services from monolithic services to microservices.
• Control > 10 core logic of accounting features that have up to 10k QPS per system, e.g. order lifecycle management, seller income calculation, invoice, loan services.

Order Team (was Checkout Team)
• Developed all-in-one Checkout API (a.k.a One Page Checkout) as a pioneer.
• Maintained core features of whole order lifecycles including checkout, logistics, and promotion.
• Implemented big features of checkout that impacted 200M of users, e.g. warehouse checkout, shipping vouchers.
• Abstract duplicated codes, and created many frameworks to simplify code logic and increased maintainability.
• Initiated a translation dispatching system that allowed staff to update translations on production without deployments.

Payment and Logistics
• Integrated with 3rd-party (mainly on payment) including both BE and FE part more than 20 channels.
• Built-up a robust receipt issuing system, and self-motivated assistant tools to manage it.
• Designed and built a new sustainable, and scalable payment system, which included creating flexible fundamental
code structures, setting up SDK and migrating old channels to the new system.

• Research on audio quality assessment, and audio fingerprint by Python

• Develop web backend including notification, user analysis, recommendtaion system
• Improve web loading and performance
• Develop in Ruby on Rails, Redis, Azure ML, Docker, Sinatra

• Responsible for maintaining network services including DNS, Radius, and system monitoring

• Administrate workstations and significant system services including LDAP, mail, web service, and Windows AD
• Mentor new system admins, and teach them about system management, monitoring, and virtualization etc.

[Project]: Color-Shift Keying for Visible Light Communication
• Develop a novel CSK modulation for VLC. Achieve the goal by doing the communication through Philips Hue and a camera of smart phone. Do experiments in C/C++ and Python

[Project]: CDMA in Wireless Sensor Network
• Design a practical CDMA-based protocol in Wireless Sensor Network. Aim to increase throughput in WSN. Implement an embedded firmware with wireless communication module under Nano-RK real-time OS by C

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