Freelancer logo How It Works Browse Jobs Log In Sign Up Post a Project
EXPLORE
Amazon Web Services Django Flask Python SQL
Profile cover photoundefined
You're now following .
Error following user.
This user does not allow users to follow them.
You are already following this user.
Your membership plan only allows 0 follows. Upgrade here.
Successfully unfollowed user.
Error unfollowing user.
You have successfully recommended
Error recommending user.
Something went wrong. Please refresh the page and try again.
Email successfully verified.
User Avatar
$30 USD / hour
Flag of CHINA
gongzhu town xinmin city, china
$30 USD / hour
It's currently 4:26 PM here
Joined January 26, 2021
1 Recommendation

Chang Shan W.

@changshanlife

monthly-level-two.svg
5.0 (3 reviews)
3.7
3.7
$30 USD / hour
Flag of CHINA
gongzhu town xinmin city, china
$30 USD / hour
100%
Jobs Completed
100%
On Budget
57%
On Time
50%
Repeat Hire Rate

Full Stack | Data Engineering | NLP & AI Chatbot

Experienced Software Developer adept in bringing forth expertise in design, installation, testing and maintenance of software systems. Proficient in various platforms, languages. Experienced with the latest cutting-edge development tools and procedures. Able to effectively self-manage during independent projects, as well as collaborate as part of a productive team. Skill set and Experience: - Full Stack Web development: * Back-end: Django, Flask, Express.js * Celery, RabbitMQ, Websocket, Reddis * Front-end: React.js/Vue.js, jQuery * API Integration: Google, Facebook, Zoom, Zoho, ORCID, Stripe, Paypal ... * Database: MySQL, PostgreSQL, MongoDB, Firestore * Elasticsearch, Logstash, Kibana * Cloud services: AWS(EC2, S3, Lambda, API Gateway, RDS, DynamoDB, SES, SQS, SNS, Cloudfront), GCP(Compute Engine, App Engine, Cloud Storage, Cloud SQL, Pub/Sub, Cloud Functions), Firebase - ETL pipeline * Apache Airflow with Celery, Redis * Apache Kafka * AWS Data services like Kinesis, Lambda, S3, Elasticsearch, RDS, DynomoDB, Athena, Quicksight - NLP & Chatbot development * Natural Language Processing: Embedding feature extraction, Semantic meaning analyzing and classification, Similarity analyzing * Chatbot: RASA, Google Dialogflow * Libraries and frameworks: Spacy, NLTK, Gensim, Tensorflow, Keras, PyTorch, Sklearn If you want to turn your ideas into working software and make your business thrive, please feel free to contact me. Thanks
Freelancer Python Developers China

Contact Chang Shan W. about your job

Log in to discuss any details over chat.

Portfolio Items

- Building NLP models using ML/DL
- Building AI Chatbot with RASA, Google Dialogflow
NLP & AI Chatbot
"Excellent work, needed the project done asap and he delivered with great quality on time within a day. Will definitely be coming to him again. There aren't many people on freelancer that are as well qualified in production quality ETL development as Chang" 

Ahmed

Tech Stack: Python, Apache Airflow, AWS (Kinesis Data Firehose, Kinesis Data Stream, S3,  Lambda, RDS, DynamoDB, Athena, Elasticsearch)
Data Pipeline
"Excellent work, needed the project done asap and he delivered with great quality on time within a day. Will definitely be coming to him again. There aren't many people on freelancer that are as well qualified in production quality ETL development as Chang" 

Ahmed

Tech Stack: Python, Apache Airflow, AWS (Kinesis Data Firehose, Kinesis Data Stream, S3,  Lambda, RDS, DynamoDB, Athena, Elasticsearch)
Data Pipeline
"Excellent work, needed the project done asap and he delivered with great quality on time within a day. Will definitely be coming to him again. There aren't many people on freelancer that are as well qualified in production quality ETL development as Chang" 

Ahmed

Tech Stack: Python, Apache Airflow, AWS (Kinesis Data Firehose, Kinesis Data Stream, S3,  Lambda, RDS, DynamoDB, Athena, Elasticsearch)
Data Pipeline
Douban is a social networking platform that focuses on expressing oneself and one’s lifestyle. Users often post on Douban to discuss books, movies, music, and events. The landscape on Douban is constantly shifting and trends emerge and die off relatively quickly on the platform. This is another platform that is often considered to be something similar to a Chinese Reddit.

Douban makes it easy for users to book tickets for movies and concerts, download e-books and even listen to their own radio station, douban.fm, through their interface. Users can also connect with each other based on similar tastes and interests.
Social Platform
Douban is a social networking platform that focuses on expressing oneself and one’s lifestyle. Users often post on Douban to discuss books, movies, music, and events. The landscape on Douban is constantly shifting and trends emerge and die off relatively quickly on the platform. This is another platform that is often considered to be something similar to a Chinese Reddit.

Douban makes it easy for users to book tickets for movies and concerts, download e-books and even listen to their own radio station, douban.fm, through their interface. Users can also connect with each other based on similar tastes and interests.
Social Platform
Douban is a social networking platform that focuses on expressing oneself and one’s lifestyle. Users often post on Douban to discuss books, movies, music, and events. The landscape on Douban is constantly shifting and trends emerge and die off relatively quickly on the platform. This is another platform that is often considered to be something similar to a Chinese Reddit.

Douban makes it easy for users to book tickets for movies and concerts, download e-books and even listen to their own radio station, douban.fm, through their interface. Users can also connect with each other based on similar tastes and interests.
Social Platform
Tech stack: 
- Python, Scrapy, Selenium, BeautifulSOUP.
- Node.js, Cheerio, Puppeteer, Node-fetch

Achievement:
- Writing python scripts to scrape web data for data usage/collection using Scrapy, Selenium, BeautifulSOUP.
- Writing node.js scripts to scrape web data for data usage/collection using Cheerio, Puppeteer, node-fetch.
- Extracted data from various sites (real-estate site, e-commerce sites, car insurance sites, job posting sites, etc)
- Leveraged advanced scraping techniques like rotating proxy (ScraperAPI, Crawlera, Smartproxy) and anti-captcha(2captcha, Deathbycaptcha, Bypass Captcha)
- Built database and APIs based on the data scraped.
Web Scraping
Tech stack: 
- Python, Scrapy, Selenium, BeautifulSOUP.
- Node.js, Cheerio, Puppeteer, Node-fetch

Achievement:
- Writing python scripts to scrape web data for data usage/collection using Scrapy, Selenium, BeautifulSOUP.
- Writing node.js scripts to scrape web data for data usage/collection using Cheerio, Puppeteer, node-fetch.
- Extracted data from various sites (real-estate site, e-commerce sites, car insurance sites, job posting sites, etc)
- Leveraged advanced scraping techniques like rotating proxy (ScraperAPI, Crawlera, Smartproxy) and anti-captcha(2captcha, Deathbycaptcha, Bypass Captcha)
- Built database and APIs based on the data scraped.
Web Scraping
Tech stack: 
- Python, Scrapy, Selenium, BeautifulSOUP.
- Node.js, Cheerio, Puppeteer, Node-fetch

Achievement:
- Writing python scripts to scrape web data for data usage/collection using Scrapy, Selenium, BeautifulSOUP.
- Writing node.js scripts to scrape web data for data usage/collection using Cheerio, Puppeteer, node-fetch.
- Extracted data from various sites (real-estate site, e-commerce sites, car insurance sites, job posting sites, etc)
- Leveraged advanced scraping techniques like rotating proxy (ScraperAPI, Crawlera, Smartproxy) and anti-captcha(2captcha, Deathbycaptcha, Bypass Captcha)
- Built database and APIs based on the data scraped.
Web Scraping
Tech stack: 
- Python, Scrapy, Selenium, BeautifulSOUP.
- Node.js, Cheerio, Puppeteer, Node-fetch

Achievement:
- Writing python scripts to scrape web data for data usage/collection using Scrapy, Selenium, BeautifulSOUP.
- Writing node.js scripts to scrape web data for data usage/collection using Cheerio, Puppeteer, node-fetch.
- Extracted data from various sites (real-estate site, e-commerce sites, car insurance sites, job posting sites, etc)
- Leveraged advanced scraping techniques like rotating proxy (ScraperAPI, Crawlera, Smartproxy) and anti-captcha(2captcha, Deathbycaptcha, Bypass Captcha)
- Built database and APIs based on the data scraped.
Web Scraping
Tech Stack: 
  - Python, Tesseract, PaddleOCR
  - Google Cloud Vision, AWS Textract
OCR
Tech Stack: 
  - Python, Tesseract, PaddleOCR
  - Google Cloud Vision, AWS Textract
OCR
Tech Stack: 
  - Python, Tesseract, PaddleOCR
  - Google Cloud Vision, AWS Textract
OCR
Car insurance website development Dusing Django, Reac.js
Django + React.js

Reviews

Changes saved
Showing 1 - 3 out of 3 reviews
Filter reviews by: 5.0
$300.00 USD
The best freelancer i've worked with. Only person I go to for nearly any task/
User Avatar
Flag of Ahmed A. @mzhao224
1 year ago
5.0
$350.00 USD
Excellent work, needed the project done asap and he delivered with great quality on time within a day. Will definitely be coming to him again. There aren't many people on freelancer that are as well qualified in production quality ETL development as Chang
User Avatar
Flag of Ahmed A. @mzhao224
1 year ago
5.0
$75.00 CAD
Incredible work. I will definitely be hiring him again soon.
SQL Web Scraping cURL
User Avatar
Flag of Lucas S. @boomtsi
2 years ago

Contact Chang Shan W. about your job

Log in to discuss any details over chat.

Verifications

Preferred Freelancer
Identity Verified
Payment Verified
Phone Verified
Email Verified
Facebook Connected

Top Skills

Python 2 Django 2 Amazon Web Services 2 Flask 2 SQL 1

Browse Similar Freelancers

Python Developers in China
Python Developers
Django Developers
Amazon Web Services Experts

Browse Similar Showcases

Python
Django
Amazon Web Services
Flask
Previous User
Next User
Invite sent successfully!
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2022 Freelancer Technology Pty Limited (ACN 142 189 759)
There is no internet connection
Loading preview