Cong is available for hire

Cong Liu

Verified Expert in Engineering

Software Developer

Location

Toronto, ON, Canada

Toptal Member Since

November 10, 2014

Cong is a fast learner and enthusiast for new technologies. He is passionate about building high-performance data structures, algorithms, and systems. He also has solid experience with object-oriented design and web service construction. He enjoys working in a team environment and is always willing to learn new skills.

Java Amazon DynamoDB Spring SQL MySQL Apache Tomcat Hibernate Linux Unit Testing Kubernetes AWS SWF Amazon S3 (AWS S3)GitHub Go FPGA

Portfolio

iWesllite Automation, Inc.

Python, Java

Breadcrumb Technology (via Toptal)

Android

University of Alberta

FPGA, MATLAB, Java

Experience

Java - 6 years Spring - 5 years SQL - 5 years MySQL - 5 years Apache Tomcat - 5 years Hibernate - 5 years Kubernetes - 3 years Amazon DynamoDB - 2 years

Availability

Part-time

Preferred Environment

IntelliJ IDEA, Linux, MacOS

The most amazing...

...thing I've developed is an augmented reality algorithm that can display virtual objects in a phone camera view like real images.

Work Experience

Software Developer

2015 - 2016

iWesllite Automation, Inc.

Developed web services for an oil well remote control system.

Technologies: Python, Java

Android Developer

2014 - 2015

Breadcrumb Technology (via Toptal)

Developed an Android app for livestock track and trace.

Technologies: Android

Research Assistant

2012 - 2014

University of Alberta

Proposed several approximate arithmetic designs and performed image processing using Java and Matlab. Achieved equivalent quality to conventional designs but with power savings of 80%.

Technologies: FPGA, MATLAB, Java

Android Developer

2010 - 2012

Tsinghua Future Communication Program

Designed augmented reality algorithms for an Android app.
Won second place globally in the 2011 Ericsson Application Award.

Technologies: Android

Experience

Butterfly Hunter

An Android augmented reality game. This game displays virtual butterflies and allows users to "catch" them. Users can walk towards butterflies and catch them only once they are close enough.

Task-queue-retry

https://github.com/waterwoodsthu/task-queue-retry

This project implements a simple task queuing, persistence and retrying framework backed by RabbitMQ and Spring-retry framework. The example is shown by a Spring MVC web service.

EhCacheExample

https://github.com/waterwoodsthu/EhCacheExample

A sample project to integrate EhCache with Spring RESTful web service.

Publication

Caching in Spring with EhCache Annotations

https://www.toptal.com/spring/caching-in-spring-with-ehcache-annotations

Skills

Languages

Java, SQL, Go, Python

Storage

Amazon DynamoDB, Amazon S3 (AWS S3), AWS SWF, MySQL

Frameworks

Spring, Hibernate

Libraries/APIs

AMQP

Tools

Apache Tomcat, Eclipse IDE, GitHub, IntelliJ IDEA, MATLAB

Paradigms

REST, Unit Testing

Platforms

Linux, Kubernetes, MacOS, Android

Other

Ehcache, Amazon Kinesis, FPGA

Education

2012 - 2014

Master of Science Degree in Electrical and Computer Engineering

University of Alberta - Edmonton, Canada

2008 - 2012

Bachelor's Degree in Automation

Tsinghua University - Beijing, China

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