Linh Chau Enterprise Software Architect/Senior Software Engineer Current Location: Austin, TX Email: [email protected] Personal public code repository: https://bitbucket.org/linhchauatl/ PROFESSIONAL QUALIFICATIONS • Twenty three years working experience as Software Developer (three years in Asia, two years in Germany and eighteen years in the United States). • Eighteen years experience of team work and leadership with local and distributed groups in Germany, United States, Japan, France, China, etc. • Eighteen years of intensive experience in configuration management, source code control, version configuration. • Twenty one years experience of Software development using OO methodologies, OOA, OOD, Design Patterns, UML visual design with Rational Rose, Agile, XP. • Good communication skills, both written and verbal. • Sixteen years experience with Enterprise Production Systems (PDM, PLM, CRM, and ERP) written in Java and Ruby. SKILLS: Operating Systems Mac OS X, iOS, Linux (RedHat, CentOS, Ubuntu, Mint) Languages Ruby, C++, C, Java, Go, Elixir, Rust, javascript UI Technologies HTML, CSS, HAML, ERB, Slim, Ajax, jQuery, ReactJS Frameworks Rails, Sinatra Web servers & App Apache, Nginx, Unicorn, Puma, Passenger, Mongrel, lighttpd, Tomcat, servers JRun, WebLogic, WebSphere, JBoss Databases MySQL, PostgreSQL, MongoDB, Oracle, DynamoDB, SQL Server Methodology Agile, Scrum, BDD, TDD, RUP, XP (Extreme Programming), OOAD, Design Patterns Tools & Utilities Git, docker, AWS services (EC2, S3, ELB, RDS, DynamoDB, ASG, Route53, SQS, SNS …etc…), Jenkins, RSpec, Cucumber, Selenium, Capybara. EDUCATION, CERTIFICATION AND AWARD • B.S. Computer Science: Technology University of Ho Chi Minh city, Vietnam, 1995. • Sun Certified Programmer for the Java 2 Platform: USA, 2000. • Third Prize of the 1995 National Informatics Competition for Young Vietnamese Professionals. 1 | Page PROFESSIONAL EXPERIENCE Contractor for Cisco February 2016 – Present Milpitas, CA, United States Senior Software Consultant Client: Cisco Milpitas, CA, United State: February 2016 – Present Remote 100% from my home office in Austin, TX Senior Software Consultant, working in the group Smart Licensing. Responsibility: • Participate in the Analysis and Design of Cisco’s new Licensing application. Working with different groups within Cisco to build the new Licensing application that serves millions of devices with TBs of data per day. • Working on Performance and Scalability measurements and designs for existing applications and new applications of Smart Licensing group. • Design and write new code for Prepaid License Application in Ruby on Rails. • Write Ruby library to replace Cisco’s old Cryptography tools. • Write code in Go to build the new Licensing application. • Maintain existing Ruby on Rails application of the Licensing group. • Build LXC containers that are used to deploy software and deliver to Cisco’s customers. Technologies: Go programming language, Beego framework, Ruby language, RoR framework, JRuby, nginx, Puma, JMeter, MariaDB, Linux lxc. OS: CentOS, Ubuntu, Mac OS X. Radian Solutions LLC April 2009 – February 2016 Roseville, CA, United States Senior Software Consultant. Work on many projects for: ThyssenKrupp Elevators, Cox Digital Exchange, Oppenheimer Funds, Rackspace, FullScreen, Appthority, Autodesk, Cisco. Client: Cisco Milpitas, CA, United States September 2015- February 2016 Work on Cisco Internet-of-thing Platform. Responsibility: • Work with Cisco engineers in IoT group. Write Sinatra micro services that provide APIs for hardware devices and other services to connect to Cisco IoT platform. • Provide expertise and hand-on helps, guidance to other engineers about cloud infrastructure, micro services container, application server configurations, docker container management. Technologies: RESTful APIs development using Ruby (Sinatra, Rails). ElasticSearch as database storage. 2 | Page Servers: nginx, puma, unicorn. Nodejs: a few javascript code for micro services. Testing tools: RSpec, Cucumber to test Ruby code. Jasmine, CucumberJS to test javascripts. AWS EC2, S3, Route 53, Docker containers. Swagger for API documentation. OS: MacOSX, Linux. Client: Autodesk San Francisco, CA, United States October 2014 – August 2015 Software Architect/Sr. Ruby Developer Responsibility: • Work with Autodesk DDWS (Digital Distribution Web Services) group, with Autodesk architect group to design and implement an open API system that allows Autodesk partners to integrate their external enterprise applications with ASDK Enterprise system. This API system facilitates the automations of sale and billing between Autodesk and Autodesk partners world wide. • In charge of technical reviews of all the features: security, software architecture, software performance, cloud deployment, coding quality, coding standard of a project team consisted of U.S. contractors, U.S. Autodesk software in-house team and an off shore team in Singapore. • Write document about Enterprise Multi-tier Application Design. Set standards and best coding practices for the team. • Implement core components of API Service Layer infrastructure using Ruby programming language. • Mentor/teach developers of the team about software engineering. • Work with Autodesk EIS (Enterprise Information System) group, with Autodesk architect group to design integration system for ADSK in-house enterprise applications such as Oracle, Siebel, SAP, using Ruby programming language. • Write Ruby Web Services APIs (using REST and SOAP) for internal integration between various Autodesk in-house enterprise systems, utilize the Mojo framework based on Sinatra. • Redesign Mojo framework to make it modularized and easy to customize/extend. • Write various Ruby gems to use within Autodesk enterprise systems (Some of them were opensourced later). • Design and implement various Proof of Concept and write production code using Mojo framework with ActiveMQ, RDS (MySQL), AWS SQS, TibcoJMS, DynamoDB, ElasticCache (redis type). • Write Ruby SDK for an in-house data streaming system called CSE. • Write Ruby on Rails Reference Application to test CSE. • Provide guidance, solutions, best practices to Autodesk architects and other developers. • Write a command line tools in Ruby to control and manipulate AWS EC2s and S3 across availability zones, running within an EC2 instance, login using ssh key. This tool allows developers in big corporations to use AWS services without individual AWS credentials. Technologies: Ruby, Sinatra, Ruby On Rails, git, memcached, zookeeper, Apigee, Amazon EC2, S3, SQS, DynamoDB, RDS, Route53, SNS, ActiveMQ, ElasticCache, MySQL, PostgreSQL. 3 | Page Client: Appthority, Inc San Francisco, CA, United States July 2014 – October 2014 DevOpt and Sr. Ruby On Rails engineer Responsibility: • Setup and monitor development infrastructure of the company in the Amazon Cloud (AWS). • Write deployment script to deploy multi RoR applications of the company to different EC2 instances. • Performance monitoring and tuning all the RoR applications of the company. • Setup TDD and BDD tests infrastructure for continuous integration development. • Writing various Ruby scripts to do the admin tasks. • Working on Ruby On Rails applications of the company. • Setup, configure and tune RabbitMQ and ElasticSearch servers for the company. • Work on data migration between MongoDB and PostgreSQL. Technologies: Ruby, Ruby On Rails, git, capistrano, HipChat and HipChat integration, Amazon EC2, S3, SQS, Route53, RabbitMQ, Elasticsearch, NewRelic, Travis, JIRA, MongoDB, PostgreSQL. Client: Fullscreen Culver city, CA, United States September 2013 – June 2014 Senior Ruby On Rails developer Work on multiple Rails applications of Fullscreen, designed as Web Services to manage Fullscreen's customers, partners, Youtube channels, business contracts. Responsibilities: • Work with project manager, customer and business analysts to gather requirements and write specifications for the software development projects. • Participate with a team to design and write core functionalities of the website using Ruby On Rails and related technologies such as various Ruby gems, PostgreSQL ...etc... • Write code to interact with Amazon S3 to store files, contract documents in S3. • Design and write APIs for RESTful web services that are consumed by Fullscreen's in-house applications. Technologies and tools: Ruby, Ruby On Rails, RSpec, jQuery, various gems, PostgreSQL Development Process: Agile process. Client: Rackspace San Antonio, TX, United States February 2013 – September 2013 Senior Ruby On Rails developer Work on a Rackspace's in-house Ruby On Rails application named Proposal Manager. This product is used by sales people in Rackspace to manage business opportunities, make quotes, contracts and manage customers information, contracts ...etc.. for different level of hosting services in different areas of the world. Responsibilities: • Work with project manager, customer and business analysts to gather requirements and write specifications for the software development projects. 4 | Page • Participate with a team to design and write core functionalities of the website using Ruby On Rails and related technologies such as various Ruby gems, PostgreSQL, jQuery ...etc... • Write code to integrate Proposal Manager with Salesforce. • Mentor junior and other developers Technologies and tools: Ruby, Ruby On Rails, RSpec, jQuery, various gems, PostgreSQL Development Process: Agile process. Client: Oppenheimer Funds Englewood, CO, United States September 2012 – January