Autonomous Technology

Applied Machine Learning

• Designed and Implemented in-house multi-dimension metrics system• Architect and Lead Backend Data Pipeline development with Akka framework and other middleware (RabbitMQ, Hazelcast and SQS).• Architect and Implementing NoSQL database utilization such as MongoDB, Redis, Cassandra, Hazelcast and HBase.• Architect and Leading development of REST or thrift API servers with vertx and spray.• Continuously Improving AdServer and reduce the response latency from ~400ms to ~3ms.• Developed Ad Deployment Service.• Leading Reporting Platform Development with Jasper and other reporting tools.• Training and Managing the Software Engineering Team.• Developed scalable simulators for load test.• Managing AWS infrastructure and service including EC2, ELB, VPC, S3, CloudFront, ElasticCache, SQS, Route53.• Leading development and maintenance of Continuous Integration and Automations with BuildBot and various tools (maven, debian packaging, grunt, pip/setuptools, etc)• Leading DevOps for tools like Puppet, Salt, Fabrics and Vagrant.

Being the only backend developer for almost a whole year, I built the Adcade backend system from scratch including but not limited to:• Implemented AdServer for Adcade that serves and tracks Ad traffic and interactive events.• Modeling and implement Data Access Layer to MongoDB.• Architecting and Leading development of API servers with vertx and thrift.• Developed Corsproxy servers and Ad Interactive Servers.• Implement MapReduce process for metrics aggregation data flow.• Automate Server Deployment and Maintenance with puppet.• Implemented and Maintaining AWS cloud infrastructure including S3, CloudFront, VPC, EC2, ELB

• Maintaining RabbitMQ and wrote monitoring script. Rewritten AMQP interface to adapt Queue clusters and make Configurable Auto-Registration for exchange, queue and message routing.• In-Depth analysis Distributed backend system and remodeled Task Scheduling mechanism to reduce message traffic and share state through Redis which results in big improvement in terms of efficiency and resiliency.• Continuously designing HBase Data Scheme for new business data and implementing DAO/Services.• Worked with team to enhance, test and deploy Private Cloud for EngineYard. The project focused onScalability, Reliability and Operation automations, increased capability to process 20 times more data traffic.• Branched Open-Source project Statsd Server written in Node.js. Redesigned it to be distributed and integrated with AppFirst platform as a sub-system. Implement Real-Time streaming through WebSocket and dynamic message queues. Delivered dedicated client code in different languages.• Dove into various popular servers such as MongoDB, Redis, PostgreSQL, MySQL, Memcached and ROR Applications. Developed Open-Source Nagios plugins for performance monitoring.• Co-write and tested add-ons for Cloud Platforms such as EngineYard, Heroku and AppHarbor to deep integrate with our system. Leading Test-Driven Development.

• Integrated data into IDOM Reg Reporter, established Data warehouse with team. Developed 10 dynamic business reports through SSRS.• Rewriting and wrapping 20-year-old core business system through COM component and asynchronous communication. Designed decoupled structure and elaborate interface to separate service layer and front end. Applied distributed architecture with .NET Remoting.

Independently develop Web-based customer-information systems and management software. Act as database administrator directing daily operations to develop business intelligence. Perform data integration through ETL process. Analyze the posting data and customer information of several Business Systems.• Independently developed, designed, and implemented a customer information system with ACL-based security architecture and loosely coupled with Strict MVC architecture. Enabled with AJAX User Interface and J2EE compatible, using Spring for IoC Container and Flow Control. • Establishing data integration and immigration into Data Interface on Reporting System: IDOM Reg Reporter and various systems after the branch immigrated to a new business system, while collaborating with both business departments on logic and system development. • Deliver report development for over 40 dynamic monthly / daily business reports utilizing SSRS.• Monetary Clearing Message (including SWIFT, CHIPS and FEDWIRE) Process, Extraction and Analysis and Integrated into eGifts system through Web Service.

Worked for a group of professors who are doing research on a novel Non-linear Regression algorithm for mining disciplines in business data. Active in algorithm discussion, I implemented all the algorithm, interface and testing programs for them. The completed thesis will bear my name as a crucial contributor.

Responsible for shifting and rebuilding core databasesDevelop Business Intelligence projects with SSIS and SSRSDB performance tuning

I was the assistant of the marketing manager. Attending all the important purchase and sale meetings with him as well as take part in requirement analysis.