Engineering Lead
Team247 (www.theteam247.com)
Keywords
Amazon Web Services
AngularJS
Route53
C (Programming Language)
Java (Programming Language)
JavaScript (Programming Language)
PHP (Programming Language)
Amazon Cloudfront
Amazon Elastic Compute Cloud
Amazon S3
Skills
- An Entrepreneurial Software Engineer with over 10-year experience designing and developing web and mobile applications. - Languages: C, C++, Objective C, Swift, Java, Kotlin, PHP, Python, JavaScript, Node.js, Ruby, Golang - Frontend Framework: Cocoa Touch, ReactiveCocoa, React, Redux, Angular, Vue.js, Vuex, AngularJS - Backend Framework: Django, Zend, Laravel, Express.js, Koa, Meteor, Apollo GraphQL, Rails - Databases/Cache: MySQL, Postgres, MongoDB, RethinkDB, Redis, Memcache - Cloud Services: AWS, Google Cloud, Azure, Heroku - AWS Services: EC2, Elastic Container Service (ECS), Elastic Beanstalk (EBS), S3, RDS, Route 53, CloudFront, Route 53, API Gateway, CloudWatch, CloudFormation, Recognition, Elasticsearch Service, IAM, Cognito, Certificate Manager Version:0.9 StartHTML:0000000105 EndHTML:0000003360 StartFragment:0000000141 EndFragment:0000003320 - An Entrepreneurial Software Engineer with over 10-year experience designing and developing web and mobile applications. - Languages: C, C++, Objective C, Swift, Java, Kotlin, PHP, Python, JavaScript, Node.js, Ruby, Golang - Frontend Framework: Cocoa Touch, ReactiveCocoa, React, Redux, Angular, Vue.js, Vuex, AngularJS - Backend Framework: Django, Zend, Laravel, Express.js, Koa, Meteor, Apollo GraphQL, Rails - Databases/Cache: MySQL, Postgres, MongoDB, RethinkDB, Redis, Memcache - Cloud Services: AWS, Google Cloud, Azure, Heroku - AWS Services: EC2, Elastic Container Service (ECS), Elastic Beanstalk (EBS), S3, RDS, Route 53, CloudFront, Route 53, API Gateway, CloudWatch, CloudFormation, Recognition, Elasticsearch Service, IAM, Cognito, Certificate Manager
Project history
04/2016
-
Present
Version:0.9 StartHTML:0000000105 EndHTML:0000007629 StartFragment:0000000141 EndFragment:0000007589
Working in a growing team with a growing portfolio of projects, products and
partners.
Partners & Clients & Projects:
. Visa (https://usa.visa.com/): A global payments technology company.
. 8x8 (https://www.8x8.com/): Award-winning hosted VoIP.
. Stanford Executive Education (https://execedportal.stanford.edu): Stanford
Graduate School of Business.
. The League (https://www.theleague.com/): Meet Intelligently.
. Balluun (https://www.balluun.com/): Powering the Future of Business Networks.
. InLieu (https://inlieu.com/): A Better Way To Gift.
. CollegeForward (http://collegeforward.org/): We Help Students Succeed.
. Happenly (http://www.happenly.io/): Faces & Places.
. Symple (https://www.getsymple.com/): Automated Payments.
And a lot more ...iOS Apps:
TheLeague:
https://itunes.apple.com/us/app/the-league/id893653132
https://play.google.com/store/apps/details?id=com.league.theleague Happenly:
https://itunes.apple.com/us/app/happenly/id1291770099
https://play.google.com/store/apps/details?id=com.happenly.io
BeeOnDemand:
https://itunes.apple.com/us/app/bee-on-demand/id1336755439
https://play.google.com/store/apps/details?id=com.theteam247.beeondemand
Vibe:
https://itunes.apple.com/us/app/the-vibe/id1289873669
https://play.google.com/store/apps/details?id=me.vibe.thevibeapp
Balluun365:
https://itunes.apple.com/us/app/balluun-365/id909814122
OrdersPro:
https://itunes.apple.com/us/app/orders-pro-ipad/id988521174
Leads365:
https://itunes.apple.com/us/app/leads365/id1276692977
07/2014
-
07/2017
Engineering Lead
Balluun Inc
Balluun is a digital marketplace for Tradeshows.
. Social Feed System
Re-architected and implemented the Social Feed System. Reduced the RTT for
paginated feeds from 2s to 300ms by using RabbitMQ worker system.
. Subscription
Developed the subscription and payment APIs
. Auto-Scaling job services and the search cluster
Architected, developed and deployed an on-demand, auto-scaling search and
indexing cluster. Reduced the server and operation cost by 60%.
. 5 iOS mobile apps
Balluun365 : TradeShow mobile E-Commerce platform
https://itunes.apple.com/us/app/balluun-365-digital-trade/id909814122?mt=8
ShopToyfair365 : ShopToyFair365 tradeshow mobile E-Commerce App
https://itunes.apple.com/us/app/shoptoyfair365/id780971801?mt=8
LiveLoveSpa365 : LiveLoveSpa365 tradeshow mobile E-Commerce App
https://itunes.apple.com/us/app/livelovespa365-spa-wellness/id984576167?mt=8
ShopTheFloor : ShopTheFloor tradeshow mobile E-CommerceAapp
https://itunes.apple.com/us/app/shopthefloor/id672762684?app=itunes&mt=8
OrdersPro : Order-taking application for sellers on the tradeshow venue
https://itunes.apple.com/us/app/orders-pro-ipad/id988521174?mt=8
. Social Feed System
Re-architected and implemented the Social Feed System. Reduced the RTT for
paginated feeds from 2s to 300ms by using RabbitMQ worker system.
. Subscription
Developed the subscription and payment APIs
. Auto-Scaling job services and the search cluster
Architected, developed and deployed an on-demand, auto-scaling search and
indexing cluster. Reduced the server and operation cost by 60%.
. 5 iOS mobile apps
Balluun365 : TradeShow mobile E-Commerce platform
https://itunes.apple.com/us/app/balluun-365-digital-trade/id909814122?mt=8
ShopToyfair365 : ShopToyFair365 tradeshow mobile E-Commerce App
https://itunes.apple.com/us/app/shoptoyfair365/id780971801?mt=8
LiveLoveSpa365 : LiveLoveSpa365 tradeshow mobile E-Commerce App
https://itunes.apple.com/us/app/livelovespa365-spa-wellness/id984576167?mt=8
ShopTheFloor : ShopTheFloor tradeshow mobile E-CommerceAapp
https://itunes.apple.com/us/app/shopthefloor/id672762684?app=itunes&mt=8
OrdersPro : Order-taking application for sellers on the tradeshow venue
https://itunes.apple.com/us/app/orders-pro-ipad/id988521174?mt=8
11/2012
-
07/2014
Co-Founder and CTO
Shopinterest Inc
https://web.archive.org/web/20140625113732/http://www.shopintoit.com/
Shopinterest is a social E-Commerce platform integrated with the Pinterest social
platform.
. Pintics
Created and launched the 1st Pinterest Analytics tool on the Angel Hackathon
event by going through mini sprints of brainstorming, product design and
development within 30 hours.
. Shopinterest ( https://github.com/liangdev/shopinterest )
Created and launched the 1st Pinterest E-Commerce platform
. Architecture
Architected the frontend and backend MVC framework
. Data Access Layer
Designed and developed the Data Access Layer that separates the business logic
data model from the data source access module. Created a data-source-agnostic
query language to abstract the data access.
. Image Loading
Sped up images loading by 10 times using the CDN caching and on-demand image
conversion/resizing.
Shopinterest is a social E-Commerce platform integrated with the Pinterest social
platform.
. Pintics
Created and launched the 1st Pinterest Analytics tool on the Angel Hackathon
event by going through mini sprints of brainstorming, product design and
development within 30 hours.
. Shopinterest ( https://github.com/liangdev/shopinterest )
Created and launched the 1st Pinterest E-Commerce platform
. Architecture
Architected the frontend and backend MVC framework
. Data Access Layer
Designed and developed the Data Access Layer that separates the business logic
data model from the data source access module. Created a data-source-agnostic
query language to abstract the data access.
. Image Loading
Sped up images loading by 10 times using the CDN caching and on-demand image
conversion/resizing.
03/2013
-
11/2013
Senior Software Engineer
Disney Interactive
. Monetization Platform
Developed and debugged the payment gateway and Ads platform.
. Cross-Frame Event Propagation and Handling
Proposed and implemented the solution for propagating events across Iframes.
Developed and debugged the payment gateway and Ads platform.
. Cross-Frame Event Propagation and Handling
Proposed and implemented the solution for propagating events across Iframes.
06/2011
-
11/2012
Software Engineer
Yahoo Inc
Yahoo Mail is one of the most popular online mail services.
. Yahoo Mail Home Page
Joined the mail frontend team and developed the new mail home page. Developed
the MVC framework on the client side. Reduced the page load time from 1s to
300ms by using first-time server side rendering and the combo loader.
. Frontend JavaScript Memory Leak
Developed a UI test suite to detect & debug the memory leak issues in browsers.
. Yahoo Mail Home Page
Joined the mail frontend team and developed the new mail home page. Developed
the MVC framework on the client side. Reduced the page load time from 1s to
300ms by using first-time server side rendering and the combo loader.
. Frontend JavaScript Memory Leak
Developed a UI test suite to detect & debug the memory leak issues in browsers.
02/2010
-
06/2011
Senior Software Engineer
Federated Media Publishing
Federated Media Publishing is a fully integrated content marketing company.
. Ads Serving Platform
Developed the content zone product to manage the content delivery and support
the task-based revenue model. Developed the geo-targeting and keyword-targeting
system on the Ads platform for the display and email Ads campaigns.
. Social Community
Designed and developed the Deals feature for the BigtTent community.
Implemented the search of deals based on the geo distance. Improved the site
responsive time by creating a 3-layed Caching hierarchy including Registry, APC
local caching and Memcache global distributed caching.
. Email Campaign System
Architected and implemented the email campaign system by using the multi-level
MapReduce model to achieve the load balancing, high availability and
performance, clearing the 500K email inventory within 15 minutes.
. Full Text Search
Indexed over 10 million documents and reduced the indexing time from more than
2 hours to less than 10 minute by using the main-delta indexing schema.
. Ads Serving Platform
Developed the content zone product to manage the content delivery and support
the task-based revenue model. Developed the geo-targeting and keyword-targeting
system on the Ads platform for the display and email Ads campaigns.
. Social Community
Designed and developed the Deals feature for the BigtTent community.
Implemented the search of deals based on the geo distance. Improved the site
responsive time by creating a 3-layed Caching hierarchy including Registry, APC
local caching and Memcache global distributed caching.
. Email Campaign System
Architected and implemented the email campaign system by using the multi-level
MapReduce model to achieve the load balancing, high availability and
performance, clearing the 500K email inventory within 15 minutes.
. Full Text Search
Indexed over 10 million documents and reduced the indexing time from more than
2 hours to less than 10 minute by using the main-delta indexing schema.
07/2009
-
01/2010
Senior Software Engineer
KickApps Corp
Yuku is an online forum community.
. Social Community
Developed the Yuku profile features: profile boxes, photo albums, news feeds and
privacy control. Improved the query time of news feeds from 10s of seconds to
virtually nil by developing an offline tool to periodically indexing the messages
users generated.
. Database Performance
. Defined and Performed data sharding for the community database to scale out
the database server load. Sped up the query by logging and analyzing the slow
query, choosing optimal data types, creating proper indexes and using stored
procedure.
. Social Community
Developed the Yuku profile features: profile boxes, photo albums, news feeds and
privacy control. Improved the query time of news feeds from 10s of seconds to
virtually nil by developing an offline tool to periodically indexing the messages
users generated.
. Database Performance
. Defined and Performed data sharding for the community database to scale out
the database server load. Sped up the query by logging and analyzing the slow
query, choosing optimal data types, creating proper indexes and using stored
procedure.
05/2008
-
06/2009
Software Engineer
Gorilla Mobile
. Social Community
Designed and developed a social network web site www.aryty.com.ph for
connected Filipinos who can send recharge airtime online. Grew the user base to
over 500k within 6 month. Implemented the features including Referral/Invitation
program, Social Graph Crawler, Friendster/Facebook Application, Mobile Phone
Top up and Virtual Wallet. Increased the mobile phone recharge revenue by 20%
through mining the social graph and email marketing campaign.
. Email Campaign System
Designed and developed an email marketing system which can deliver over
200,000 marketing emails with a low 7% bounce rate each day driving more than
50% of the sites' traffic. Implemented the core components in C and PHP: email
campaign management (ISP feedback loop/bounce management/template editor),
ETL tool and email delivery engine.
. Billing/Payment System
Implemented the credit card fraud detection module
Designed and developed a social network web site www.aryty.com.ph for
connected Filipinos who can send recharge airtime online. Grew the user base to
over 500k within 6 month. Implemented the features including Referral/Invitation
program, Social Graph Crawler, Friendster/Facebook Application, Mobile Phone
Top up and Virtual Wallet. Increased the mobile phone recharge revenue by 20%
through mining the social graph and email marketing campaign.
. Email Campaign System
Designed and developed an email marketing system which can deliver over
200,000 marketing emails with a low 7% bounce rate each day driving more than
50% of the sites' traffic. Implemented the core components in C and PHP: email
campaign management (ISP feedback loop/bounce management/template editor),
ETL tool and email delivery engine.
. Billing/Payment System
Implemented the credit card fraud detection module
Local Availability
Only available in these countries:
USA
Remote Only
Other
I can work as a developer or I can bring a team of other resources per your needs because I am backed by a team of awesome developers in web(frontend/backend)/mobile(iOS/Android) development.
