DENIS LI
Montreal, QC H1X 1N5 |-
LinkedIn
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https://www.linkedin.com/in/denis-li-ba/
Professional Summary
3 years experienced React (React.js & React Native) Developer with hands-on experience in identifying webbased and app-based user interactions along with designing & implementing highly-responsive user interface
components by deploying React concepts.
Owned effective React app development pattern and familiar to start working from the beginning and existing
project. Proficient in translating designs & wireframes into high-quality code, and writing application interface
code via JavaScript and ReactJS/React Native workflows. Adept at monitoring & maintaining frontend
performance and troubleshooting & debugging the same to bolster overall performance.
Work History
Experienced Frontend Developer
Upwork.com
July 2020- Current
Greater Montreal Metropolitan Area, QC, Canada
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Identified web and mobile based user interactions and developed highly-responsive user interface
components via React concepts. Translated designs & wireframes into high-quality code and wrote
application interface code via JavaScript following React.js workflows
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Troubleshot interface software and debugged application codes to improve functionality and performance
by 50% Developed and implemented frontend architecture to support user interface concepts with 100%
accuracy
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Monitored and improved frontend performance by 15% and documented application changes & worked
on updates Developed the latest user-facing features using Reacts and built reusable components &
frontend libraries for future use Optimized components for maximum performance across a vast array of
web-capable devices and browsers
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Coordinated with the development team of 12 to discuss user interface ideas and applications Reviewed
application requirements and interface designs to ensure compatibility with existing applications
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Produced 5 app UI translations. Because app's primary target area is French Guiana and Caribbean
regions it is available in different creole languages, as well as French and English
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Completely prototyped app
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Architected full-stack using different technologies
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Deployed to Google Play and Apple App Stores
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Performed beta testing with TestFlight and Android Beta Channel Releases
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Utilized React Redux for transient app state
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Carried Test-Driven Development with Jest
Frontend Developer
Dec 2019- July 2020
Freelancer.com
Liaoning, China
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Determined the structure and design of web pages based on user requirements and balanced functional &
aesthetic designs Created features to enhance the user experience while ensuring that the web design is
optimized for smartphones Employed a variety of languages such as HTML and CSS to write & create
user-friendly web pages
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Built reusable code for future use and optimized web pages for 5 applications for maximum speed and
scalability Managed brand consistency throughout the design and maintained & improved the company's
website by adding more features and functionality
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Completed minor preventative maintenance and mechanical repairs on equipment.
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Developed and implemented performance improvement strategies and plans to promote continuous
improvement.
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Insured code robustness by using Typescript on React Native mobile Frontend
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Due to some limitations in React Native, developed native modules from scratch Native iOS (Objective-C
and Swift) + Native Android (Java). Those modules communicate back and forth with JS engine
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Used Firebase's live database update notifications to enable real time messaging with push notifications
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Transformed native iOS to React Native
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Developed Android version that was missing
Frontend Developer
Nov 2018- Dec 2019
Dalian Technology Cooperation Company
Liaoning, China
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Liaised with cross-functional teams to ensure that the client projects were completed on time and within a
stipulated budget Produced high-quality mockups & designed different prototypes and provided high-quality
graphics & visual elements
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Prepared detailed reports on updates to project specifications, progress, identified conflicts and team activities.
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Worked effectively with cross-functional design teams to create software solutions that elevated client-side
experience and significantly improved overall functionality and performance.
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Implemented new software applications and operating system roll-outs across business enterprise.
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Integrated Local Notifications to notify users when makeup product goes out of life
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Produced basic native iOS app called Markup was released for private client
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Integrated Facebook Places API to find places around and persist data to device's disk
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Keeps local data up-to-date by making use of Core Data's NSFetchedResultsController class keeps
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Integrated Facebook Audience Network SDK to display native advertising
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Deployed app to Apple App Store
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Working on side-project social media mobile app
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Integrated Twilio Programmable Video API for live video-chat
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Made use of Reactive Programming paradigm thanks to RxSwift, RxCocoa
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Performed test-driven development. Nimble's unit testing environments helps in testing for fatal error
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MongoDB powers geolocation search, allowing people to explore their surroundings and find other users
around them
Skills
• React Native (3 years)
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HTML (3 years)
• React.js (3 years)
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CSS (3 years)
• Java (1 years)
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JavaScript (3 years)
• Objective-C (1 years)
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Typescript (3 years)
• Git (5 years)
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Firebase (3 years)
• Webpack (3 years)
Education
B.E Computer Science
Dalian University of Technology
Nov 2018
Dalian, Liaoning, China
