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Serhii Wang
Backend Developer Frontend Developer Mobile Developer Lead Developer
Serhii Wang

Hello I'm Serhii Wang

Backend Developer Frontend Developer Mobile Developer Lead Developer
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About me

Senior Full stack/Lead Developer

SERHII Wang

Saskatoon, SK, Canada

Have 10 years of experience in web and mobile application development.

I have developed lots of websites and mobile applications for several business utilizing a wide range of technologies for clients' business success and happy life.

I make it my mission to provide my clients with a top-notch responsive and eye-catching website, great UI experience for your users, powerful backend integration, and SEO optimization.

I'm very friendly, easy to talk to, and easy to work with. Whether you are technical or not, I talk in plain English with no jargon so that you know exactly what's going on and how things work.

  • 10 Years+ Job

    Experience

  • 50+ Projects

    Completed

  • 150+ Meetings

    Successful

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What Actually I Do My Services

Web Development

Build web apps and solutions for a variety of business domains including Real-Time Multimedia, Fintech, E-commerce, e-Learning, Insurance, Healthcare, Blockchain and Marketing by bulletproof code.

Hybrid Mobile App Development

Develop cross-platform apps that run on both iOS and Android from a single code base. Hybrid development reduces the time and cost associated with developing apps on both platforms.

MVP Development

Introduce you the new perspective over the Minimum Viable Product development, Prototyping, and Proof of Concept because I know what your startup needs to succeed.

Quality Assurance

Regularly I control and evaluate multiple aspects of my work to make sure my progress run smoothly, my product is well-perform and my result come out accurately how the client required.

Resume

Senior Full Stack/Lead developer

My Professional Work History

Kunai | Apr 2021 - Apr 2023
LEAD & FULL STACK DEVELOPER
  • Built financial app - Stackwell app using React Native, React, React hooks, Redux-saga, Typescript and AWS Amplify.
  • Integrated Bank API with Plaid and BillGo Widget
  • Developed complex UI in React Native, React tech stack (Redux, Reselect, Recompose, Reactstrap, Material-UI,TypeScript, HTML, SCSS) ensuring on-time delivery in a fast-paced startup environment.
  • Designed and implemented from scratch an internal analytics and troubleshooting tool with React Native front-end and Node.js AWS Amplify back-end.
  • Customized PhantomJS layer and deployed to AWS Lambda and generated PDF
  • Improved the performance 40% using reusable components and passed unit test case 95% using Jest and coverage 90% automated end-to-end tests with Detox.
Cazvid, Inc | May 2020 - May 2021
SENIOR FULL STACK DEVELOPER
  • Built Cazvid mobile application and Admin dashboard using React Native, React, React hooks, Redux-saga, Typescript, NodeJS and AWS Amplify.
  • Fixed app crash issue, video player/pause issue and memory issue and improved performance 30% with FlatList and reusable components.
  • Implemented Encryption/Decryption using E3kit and KeyStorage for chat security, chat and notification using AWS Amplify and Searching/Filtering job using GEO Location.
StubHub | Jan 2018 - Oct 2020
SENIOR FRONTEND DEVELOPER
  • Created React components, Jest/Enzyme tests, A/B tests, and monitoring dashboards.
  • Refactored the feature managing successfully, market tracking, and internal logging systems of both iOS and Android by abstracting the logic to a layer which is 3rd party independent.
  • Contributed 80% in the development of products from requirements through successfully deployment.
  • Implemented the CI/CD pipelines to integrate with the 3rd party tools and make the deployment automatic.
  • Led 40% the technical discussion and decision-making process.
Nimses, Inc | Jan 2014 - Oct 2017
WEB DEVELOPER
  • Built Blockchain admin dashboard using D3JS and AngularJS
  • Developed and implemented the web application using AngularJS 1.x, Laravel, MySQL, Bootstrap v3/4 and jQuery.
  • Implemented and enhanced CRUD operations for the applications using the MVC architecture of Laravel framework and PHP conducting code reviews
  • Worked in MySQL database on complication queries and writing stored procedures for normalization and denormalization

My Professional Work Skills

React Native/React/GraphQL/Apollo

95%

AngularJS/Angular 2+/Ionic

90%

VueJS

95%

NodeJS

95%

Typescript/Javascript

95%

My Education

Sep 2009 - Sep 2013
The Hong Kong University of Science and Technology

Bachelor's Degree

Portfolio

project14

House Rental App

React Native

  • Updated Some UIs and implemented new features
  • Integrated REST APIs and google map api
  • Fixed 40+ issues

Shopping App

Ionic 3

  • Updated Some UIs and implemented new features
  • Integrated REST APIs and shopping api
  • Fixed 20+ issues

Klass

VueJS

  • Updated Some UIs and implemented new features
  • Implemented Chatting feature using Firebase
  • Integrated REST APIs
  • Fixed 40+ issues

Willow Parenting App

React Native

  • Updated Some UIs and implemented new features
  • Built Firebase function using NodeJS and integrated it.
  • Implemented real time chat using Firebase store
  • Encryption/Decryption for security using E3kit and Virgil Crypto

Shopping

ReactJS

  • Built Card and Product page using ReactJS and integrated in Shopify theme.
  • Implemented new design and functionalities from Invision
  • Integrated REST APIs and Payment APIs
  • Fixed add product function and ordering function

EasyJet

Angular 1.6 + NodeJS

  • Built some REST APIs and booking API using NodeJS, Express and MongoDB
  • Deployed on Ngnix server
  • Integrated Payment APIs
  • Fixed some UI issues

Food Delivering App

React Native

  • Updated Some UIs and implemented new features
  • Integrated REST APIs, Google map APIs, and Payment APIs
  • Fixed add product function and ordering function

Pro Referral

VueJS, Vuex, Vuetify

  • Integrated Seller UIs using Figma design
  • Integrated REST APIs and Payment APIs
  • Integrated text chats using Firebase
  • Integrated Phone verification using Twilio API
  • Improved performance

Fitness App

Ionic 3

  • Implemented UI using figma design
  • Share current physical condition in real time, amount of exercise
  • Find nearly gyms using Google map api
  • Phone verification, Video call using Twilio API
  • Real-time communication function between users and coach using Firebase real time db and Twilio API

TimeLine-Genius

Angular 1.6 + RoR

  • Updated Some UIs
  • Implemented schedule management feactures
  • Integrated REST APIs and Payment APIs
  • Fixed some backend apis

Vaniday

Angular 4

  • Updated Some UIs
  • Implemented booking APIs
  • Integrated REST APIs and Payment APIs
  • Fixed 30+ issues

Eventray

ReactJS + NodeJS

  • Updated Some UIs
  • Integrated REST APIs
  • Implemented event management APIs
  • Fixed add product function and ordering function

StubHub

ReactJS, React Native

  • Shipped updated Events app with product team consisting mainly of newly hired engineers.
  • Created React components, Jest/Enzyme tests, A/B tests, and monitoring dashboards (Splunk).
  • Worked closely with Data team and FE Platform engineers to implement page view and click tracking (Adobe Launch).
  • Successfully refactored the feature managing, market tracking, and internal logging systems of both iOS and Android by abstracting the logic to a layer which is 3rd-party independent.
  • Contributed iOS and Android development expertise in the development of products from requirements through successfully deployment.
  • Implemented the CI/CD pipelines to integrate with the 3rd party tools and make the deployment automatic.
  • Mentor the developers to write clean and well-tested code.
  • Lead the technical discussion and decision-making process.

Cazvid

ReactJS, React Native, NodeJS

  • Built Cazvid app using React Native, React, React hooks, Redux-saga, Typescript, NodeJS and AWS Amplify.
  • Fixed video uploading crash issue using AWS chunk uploading.
  • Fixed video player/pause issue and memory issue.
  • Implemented chat and notification using AWS Amplify.
  • Implemented Searching/Filtering job using GEO Location.
  • Integrated AWS Cognito, DynamoDB, AWS Amplify and built Amplify APIs using NodeJS.

Contact

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