Chris Lu
Summary
Energetic Application Developer offering wealth of experience in web application development,technical troubleshooting and problem-solving business issues. Hardworking, educated, and willing to go extra mile to complete any task. Skilled programming in RESTful API to develop web applications. Key achievement: embedded 18 Applications on a Salesforce portal page and successfully managed access to data for over 60K users using 'Roles'.
Overview
16
16
years of professional experience
Work History
Application Developer
Telus Communication
07.2022 - 02.2024
- Created a mobile responsive user experience with CSS flexbox that allowed cross-platform accessibility to the website telus.com with primary use on mobile
- Built API following RESTful standards to allow users to submit information by storing data in MongoDB
- Improved 6 back-end applications through testing and troubleshooting, increasing processing effectiveness by 18%
- Conducted API testing with Postman to ensure a 96% success rate in data integration
- Automated version control workflows using Git hooks, decreasing manual errors by 32%
- Developed complex SQL queries using 14 procedures, including Common Table Expression (CTE), to support Power BI and SSRS reports
- Conducted Web application deployment via Microsoft Azure lowering infrastructure management time by 43%
Data Warehouse Developer
Marketish INC
01.2020 - 06.2022
- Interviewed 20 business users of the data warehouse and business analysts to understand and troubleshoot existing bottlenecks, resolving 80% of issues ahead of the deadline
- Created aggregates, partitions, attribute relationships, and user-defined hierarchies to reduce the cube processing time from over 4.6 hours to 45 minutes and query processing time to under 279ms
- Generated reports, maintaining dimensional as well as relational data structures and managing operational data store and data warehouse.
- Employed vast knowledge of relational database concepts and PL/SQL coding to produce highly efficient data systems.
Web Application Specialist
Rogers Communication
03.2013 - 11.2019
- Configured Apache HTTP Server for website hosting to improve website loading speed by 64%
- Assisted senior developers in monitoring application performance and resolving issues, achieving a 93% customer satisfaction rate
- Curated over 50 website changes to increase the user flow and understanding of all platform capabilities and features
- Optimized MySQL database for web applications, improving data retrieval time by 34%
- Designed, implemented and monitored web pages, plugins, and functionality for continuous improvement.
- Led effort to develop companion application programming interface (API) for web app, to facilitate third-party plugins.
- Planned website development, converting mockups into usable web presence with HTML, JavaScript, AJAX, and JSON coding.
- Designed web apps using continuous integration, continuous delivery (CI/CD) design models.
- Oversaw back-end development using PHP to maintain website integrity.
Application Analyst for compliance
IBM
11.2008 - 03.2013
- Performed and coordinated special assignments from the infrastructure manager
- Assisted senior developers in monitoring application performance and resolving issues, achieving a 99% customer satisfaction rate
- Maintained the application compliance status above 95% for 3 years
- Optimized MySQL database for web applications, improving data retrieval time by 34%
- Performed on-site and in-house bench-scale testing, data analysis, and reports.
System Administrator
BELL Canada
11.2007 - 11.2008
- Maintained 100+ Windows/Unix system including Installation, configuring and monitoring
- Assisted in writing scripts to automate scheduled system patching firmware
- Implemented and configured Intrusion Detection/Prevention Juniper IDP1000c/f, McAfee IntruShield 4010 ISS Site Protector 2.0, Real Secure Server 5.0; McAfee ePO Orchestrator 4.0 and others in enterprise infrastructure
- Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
- Oversaw file system and storage upgrades while safeguarding data integrity and redundancy.
- Provisioned new software and hardware for use, following established security policies.
- Planned and implemented upgrades to system hardware and software.
- Maximized system availability through development and testing of contingency plans.
Education
Master - Computer Science
State University Of New York
09.2003
Skills
- Web development
- Ractivejs
- Javascript
- Python ,Perl and C
- HTML,XML
- JSON mapping
- SDLC compliance
- Data Analysis
- RESTful APIs
- SQL expert
- Git
- ETL processes
- Version control systems
- Back end development
- Operating systems(Windows/Unix)
- Hardware and software installation
Personal Information
Title: Application/Data Warehouse Developer
Languages
English
Professional Working
Timeline
Application Developer
Telus Communication
07.2022 - 02.2024
Data Warehouse Developer
Marketish INC
01.2020 - 06.2022
Web Application Specialist
Rogers Communication
03.2013 - 11.2019
Application Analyst for compliance
IBM
11.2008 - 03.2013
System Administrator
BELL Canada
11.2007 - 11.2008
Master - Computer Science
State University Of New York
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