Zhang Y
The star rating is a representation of the overall rating, calculated as the mean of the client satisfaction rating, interview rating, and internal vetting rating.
Client satisfaction rating is the weighted average of client ratings, with weights based on reviewed work hours. When no client rating exists, the approval fraction (approved vs. reviewed work hours) determines it.
If the client satisfaction rating exceeds the overall rating, it becomes the star rating. In the absence of client ratings, if the average interview rating is higher than the overall rating, it becomes the star rating. If no data is available, the star rating defaults to the internal vetting rating.
Client satisfaction rating is the weighted average of client ratings, with weights based on reviewed work hours. When no client rating exists, the approval fraction (approved vs. reviewed work hours) determines it.
If the client satisfaction rating exceeds the overall rating, it becomes the star rating. In the absence of client ratings, if the average interview rating is higher than the overall rating, it becomes the star rating. If no data is available, the star rating defaults to the internal vetting rating.
Senior Software Engineer Preferred Title
$37.50 /hr $ 48.0K /yr Hourly Rate and Yearly Salary
Overview
Basic Summary
LD Talent History - Worksession Approval 100.0%
- Average Response Time 2.3 hours
- Average Count of Messages/Day 18.3
- Project Completion Rate 2/4
- Interview Acceptance Rate 4/6
- Timezone Overlap 45h PST, 30h UTC
- Earned Hours 159.00
- Code Quality 60%
- Soft Skill Attributes 60%
- Expertise 2/3
- Coding Challenges 60%
- No. of Lifelong Learning Projects 2
- No. of Coding Challenges Completed 2 More details
- Software Engineering Process 5.0/5
- Technical Breadth 4.0/5
- Algorithmic Thinking 4.0/5
- Technical Strength 5.0/5
- Teamwork 4.0/5
- Intellectual Merit 4.0/5
- English Communication 3.0/5
- Desktop Mac
- Phone iPhone
- Tablet Android Tablet
- Member Since Oct 17, 2022
- Profile Last Updated Jan 15, 2023
- Last Activity Nov. 28, 2023, 6:44 p.m. UTC
- Location Netherlands
Profile Summary
As a talented Full Stack Web & Mobile App Engineer, I am happy to have a chance to offer my expertise to you. With my rich experience, you will be glad about collaborating with me.
Skills
Total Experience: 8+ years
iOS native app development (3E, 8Y)
3 experiences, across 8 yearsReact (5E, 7Y)
5 experiences, across 7 yearsPython (3E, 7Y)
3 experiences, across 7 yearsMachine learning (2E, 7Y)
2 experiences, across 7 yearsAndroid native app development (2E, 7Y)
2 experiences, across 7 yearsPHP (2E, 6Y)
2 experiences, across 6 yearsC# (1E, 6Y)
1 experience, across 6 yearsXamarin (2E, 3Y)
2 experiences, across 3 yearsUnity Game Design and Development (1E, 2Y)
1 experience, across 2 yearsBlockchain (1E, 2Y)
1 experience, across 2 yearsTensorflow (1E, 2Y)
1 experience, across 2 yearsPyTorch (1E, 2Y)
1 experience, across 2 yearsMySQL (2E, 2Y)
2 experiences, across 2 yearsASP.NET (1E, 2Y)
1 experience, across 2 yearsFlutter (3E, 1Y)
3 experiences, 1 yearjQuery (2E, 1Y)
2 experiences, 1 yeariOT (1E, 1Y)
1 experience, 1 yearFirebase (2E, 1Y)
2 experiences, 1 yearReact native (3E, 1Y)
3 experiences, 1 yearSwift (2E, 1Y)
2 experiences, 1 yearWordpress (1E, 1Y)
1 experience, 1 yearJavaScript (1E, 1Y)
1 experience, 1 yearLaravel (1E, 1Y)
1 experience, 1 yearNodejs (1E, 1Y)
1 experience, 1 yearGraphQL (1E, 1Y)
1 experience, 1 yearNeo4j (1E, 1Y)
1 experience, 1 yearShopify (1E, 1Y)
1 experience, 1 yearPostgres (1E, 1Y)
1 experience, 1 yearJava (2E, 1Y)
2 experiences, 1 yearCSS (1E, < 1Y)
1 experience, less than a yearDjango (1E, < 1Y)
1 experience, less than a yearVue.js (1E, < 1Y)
1 experience, less than a yearGoogle Analytics (1E, < 1Y)
1 experience, less than a yearGoogle Tag Manager (1E, < 1Y)
1 experience, less than a year
Weekly Availability
Timezone Overlap with 06 - 21 per Week: 45h PST, 30h UTC
Day
Monday
Tuesday
Wednesday
Thursday
Friday
UTC
15 - 24
15 - 24
15 - 24
15 - 24
15 - 24
PST
07 - 16
07 - 16
07 - 16
07 - 16
07 - 16
Vetting
- Interview Data
- Agile Development Process
- Productivity and Responsiveness
- Teamwork
- Software Engineering
- Logical Thinking
- Technical Strength
- Intellectual Merit
- English Communication
- Documentation
- System Design
- Coding Challenges60%
- Algorithms Score60%
- General Score60%
- Easy Algorithm
- Correctness60%
- Performance60%
- Medium Algorithm
- Correctness60%
- Performance60%
- Hard Algorithm
- Correctness60%
- Performance60%
- Expertise2/3
- Design Patterns and Architectures2/3
- Debugging2/3
- Stack Traces2/3
- Testing2/3
- System Administration2/3
- Soft Skill Attributes60%
- Entrepreneurial60%
- Whole Brained60%
- Divergent Thinking / Creativity60%
- Design Ability60%
- Empathy60%
- Project Management Ability60%
- Security60%
- Code Quality60%
- Complex Logic60%
- Models60%
- Controllers60%
- Templates60%
- APIs60%
- Training/Testing Data Models60%
- Code Readability60%
- Ongoing Evaluation
- Number of Lifelong Learning Project2
- Number of Coding Challenge Completed3
Experience
Full Stack Developer
Contract
Oct 2021 - Oct 2022
SEKO Scheepselektrotechniek Company
Technology Industry
Project: Ship Control iOS App Development
- iOT
- iOS native app development
- Xamarin
- I worked for this company for 1 year as a part-time full stack engineer.
- I developed a PLC control iOS app for this company. I used techniques like IoT and iOS native app development.
- It worked based on OPC UA and I used Xamarin.iOS for the app development.
Full Stack Developer
Contract
Mar 2022 - Sep 2022
Sagelink Company
Ecommerce Industry
Project: Sagelink Ambassador Management
- Flutter
- Firebase
- React
- Nodejs
- Shopify
- Neo4j
- GraphQL
- I worked on the Sagelink community app. It was built with Flutter and GraphQL. I used the Neo4j database for it.
- I used Neo4j for the Sagelink community app for their database and I used Firebase for ambassador management.
- I used Nodejs for the Shopify app and I used React for the frontend and I deployed on Heroku.
- I used JavaScript for Firebase functions.
Senior Mobile App Developer
Employment
Jan 2020 - Nov 2021
Tinint Company
Healthcare Industry
Project: ConnectWellbeing App
- MySQL
- ASP.NET
- Xamarin
- I used Xamarin Forms for App Development and I used ASP.NET Core for the backend.
- ASP.NET uses MSSQL by default, but I used MySQL for the database.
Mobile App Developer
Employment
Mar 2021 - Sep 2021
Red Sentence Ltd Company
Finance Industry
Project: Mobile App
- React native
- Java
- Flutter
- Swift
- Postgres
- I developed native apps with Java and Swift for Android and iOS.
- I used Flutter and React native for cross-platform apps.
- I used Postgres for the database for these companies' mobile app projects.
Senior Mobile App Developer
Employment
Mar 2021 - Aug 2021
KindRedTechnology Company
Education Industry
Project: Mobile App Development
- React native
- Java
- Flutter
- I developed the first app with React native. It was a church app.
- I developed a second app with Java. It was an Android native app and it was used for a school.
- I developed a third app with Flutter. It was a simple app for both Android and iOS.
Senior Software Developer
Contract
Aug 2019 - Jul 2021
Devanzare Ltd Company
Finance Industry
Project: Machine Learning and Cryptocurrency
- Blockchain
- Tensorflow
- Unity Game Design and Development
- Python
- Machine learning
- PyTorch
- I worked on Blockchain projects and Machine learning projects.
- I used Solidity and NFT experience for the Blockchain projects.
- I used deep learning for Machine learning projects and I used Python, Tensorflow, and PyTorch for it.
- I worked on some Unity Game Design and Development projects with Unity3D and C#.
Full Stack Developer
Employment
Jul 2020 - Feb 2021
Red Sentence Ltd Company
Real Estate Industry
Project: Phoenix Website
- jQuery
- MySQL
- React
- Wordpress
- PHP
- JavaScript
- Laravel
- I used WordPress for content management and I used PHP for API integration.
- I used jQuery and React for the frontend and I used the MySQL database.
- I used Laravel and JavaScript for the sub-website.
Full Stack Developer
Contract
Dec 2014 - Feb 2021
Damian System Engineering Co Za Company
Utilites Industry
Project: Web and Mobile App development
- C#
- Android native app development
- React
- Python
- iOS native app development
- PHP
- Machine learning
- I used C++ and C# for Desktop Application development.
- I used Python for Machine learning and backend development.
- I used React Native and Flutter for mobile app development.
- I did Android native app development and iOS native app development.
- I used React and other javascript frameworks for frontend and I used PHP for backend.
LD Experience
Client Projects
Developer
Contract
Nov 2022 - Apr 2023
LD Talent Client's Company/Project
- jQuery
- CSS
- React
- Django
- Vue.js
- Slack workspace automation with Python, Selenium, CSS
- Automation with jQuery, Django, React, Vue.js
His code works, he takes feedback well, he handles complex issues with elegant solutions. His responsiveness and speed are great.
Developer
Contract
Feb 2023 - Feb 2023
StatusQuoDefaults Client's Company/Project
- Google Analytics
- Google Tag Manager
- React
- Python
Received
Feedback received from the client and recorded by LD Talent.We are not sure if his proposal is reasonable. 18 hours to set the interface - it looks a little excessive to me.
Developer
Contract
Nov 2022 - Feb 2023
Flutter Client's Company/Project
- React native
- Firebase
- iOS native app development
- Swift
- Android native app development
Coding Challenges
Skill:
- iOS native app development
- React
- Python
- Machine learning
- Android native app development
- PHP
- C#
Basic
Sep 2020 - Jan 2022
Basic
Sep 2020 - Jan 2022
Basic
Sep 2020 - Jan 2022
Video Projects
How to implement django-tenant-schemas with a fixed URL
Sep 2020 - Jan 2022
Frontend Developer
Technology
- iOS native app development
- React
- Python
- Machine learning
- Android native app development
- PHP
- C#
- Led user research for a new construction site documentation tool.
- Hosted workshops to synthesize user insights into design requirements.
- Designed 3D concepts and built prototypes to investigate new tool form factors.
- Researched existing digital solutions and prioritized key features for app release.
LD Ventures
Thea
Sep 2020 - Jan 2022
Frontend Developer
Technology
- iOS native app development
- React
- Python
- Machine learning
- Android native app development
- PHP
- C#
- I used the Django Rest Framework to create a multi tenant API with the aid of the django-tenant-schemas package.
- I used the Postgres Database as the persistence layer and specifically the PostgreSQL Schemas to ensure that all tenants using the API had their data.
- I used the REST architecture in designing my API.
- Researched existing digital solutions and prioritized key features for app release.
Qualifications
Education
Wuhan University of Technology
Apr 2016 - Jun 2020
Master (Computer Science)
Courses
Information Engineering
Apr 2016 - Jun 2020
Wuhan University of Technology
- Deep learning
- React native
- Flutter
- Artificial intelligence
- Tensorflow
- React
- Data mining
- PyTorch
Computer Science
Apr 2010 - Aug 2014
University of Shanghai for Science and Technology
- Java
- C#
- Android native app development
- Machine learning
- Python
- iOS native app development
- PHP
- JavaScript
- C++
Reviews
Client Project Reviews
LD Talent
His code works, he takes feedback well, he handles complex issues with elegant solutions. His responsiveness and speed are great.
StatusQuoDefaults
Received
Feedback received from the client and recorded by LD Talent.We are not sure if his proposal is reasonable. 18 hours to set the interface - it looks a little excessive to me.