Andrzej

From Malaysia (GMT+8)

Full-stack Web DeveloperSenior

Hire developer

9 years of commercial experience

Art and creativity

Banking

Communications

Construction

Credit and lending

E-learning

Edtech

Event management

Management

NFT

Public services

Social impact

Social media

Transportation

Travel

Communication tools

LMS

Platforms

Lemon.io stats

2

projects done

1158

hours worked

Open

to new offers

Skills and seniority verified on Aug 9, 2022

Andrzej – React, Node.js, Typescript

Andrzej is a Senior JavaScript Full-Stack Developer with extensive experience in networking, specializing in React and Node. As an AWS expert with leadership background, he is good at finding optimal code solutions for complex projects. Additionally, Andrzej is known for his excellent communication skills and approachable demeanor, making him a great choice for any team.

Main technologies

React

7 years

Node.js

7 years

Typescript

6 years

JavaScript

6 years

Next.js

2 years

Python

1 year

Additional skills

PostgreSQL

MongoDB

Docker

Express.js

Redux

AWS

Cassandra

GraphQL

Microsoft SQL Server

Styled-components

WebSocket

Golang

Tailwind CSS

Vercel

Prisma

Twilio API

Cognito

Ready to start

To be verified

Direct hire

Potentially possible

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Experience Highlights

Senior Full-stack Developer / Architect

Oct 2022 - Jan 20241 year 3 months

Project Overview

Content creators management platform.

Skeleton

Responsibilities:

Designed and deployed background scraping jobs to AWS K8s cluster;
Conducted external API reverse engineering;
Implemented performance optimizations.

Project Tech stack:

Typescript

React

Next.js

tRPC

Prisma

Playwright

Vercel

AWS

Chrome extensions

Kubernetes

Amazon S3

React Hooks

HTML

CSS

Tailwind CSS

Docker

Containers

Web scraping

Puppeteer.js

Front-end Developer

Nov 2021 - Jan 20222 months

Project Overview

A global fine art platform that combines art trading, NFT, and data product components.

Skeleton

Responsibilities:

Redesigned the registration and artwork sale forms, for which he needed to get up to speed with Shopify very quickly;
Contributed to redesigning the NFT artwork minting process (React code and Cypress.io tests).

Project Tech stack:

Typescript

Next.js

React

Full-stack Developer

Jan 2021 - Apr 20213 months

Project Overview

From the scratch development of a search tool for mortgage optimization leads.

Skeleton

Responsibilities:

Delivered a fully functional MVP rapidly, with a focus on quality;
Configured and deployed the solution to the AWS cloud (Amplify, Beanstalk, Lambda).

Project Tech stack:

Typescript

AWS

Node.js

React

GraphQL

HTML

CSS

Apollo Client

Apollo GraphQL

Apollo Server

Front-end Developer

Nov 2020 - Mar 20214 months

Project Overview

It is an innovative construction plant management software.

Skeleton

Responsibilities:

Developed the MVP as a sole Front-end Developer;
Managed to maintain the code quality despite the high pace of the project;
Did WebSocket API integration with the back-end.

Project Tech stack:

Typescript

React Query

AWS

React

REST API

Web Sockets

HTML

CSS

Styled-components

Lead Front-end Developer

Jul 2019 - Mar 20208 months

Project Overview

It is an innovative social platform for sharing and discovering news and media.

Skeleton

Responsibilities:

Consistently reduced the technical debt by transitioning from Immutable.js to native JavaScript;
Carried out performance optimizations (resulting in the reduction of unnecessary React rerendering), refactorings improving code quality, and UX improvements.

Project Tech stack:

Redux

Redux Saga

Reselect

AWS

Styled-components

React

Full-stack Developer

May 2018 - Dec 20187 months

Project Overview

It is an obituary generator web app.

Skeleton

Responsibilities:

Did front-end form performance optimizations and centralized form validation;
Optimized GraphQL queries which improved page load time as well as significantly lowered the amount of data stored in the DB;
Did various refactorings to improve code quality.

Project Tech stack:

Redux

GraphQL

Apache Solr

Microsoft SQL Server

Docker

React

Node.js

Full-stack Developer / Architect

Aug 2017 - Apr 20187 months

Project Overview

It is an educational measurement and evaluation system based on the QTI standard.

Skeleton

Responsibilities:

Designed and built a zero-downtime system with the capability of handling over 500 hits/s with the minimum hardware setup, linearly scalable;
Used Cassandra as the data store, to meet the high availability and scalability requirements;
Сonfigured and deployed the entire solution to the AWS cloud (ECS, S3, CloudFront).

Project Tech stack:

Redux

Cassandra

AWS

React

Node.js

Koa.js

Amazon ECS

Amazon S3

Amazon CloudFront

Full-stack Developer / Architect

Feb 2017 - Jul 20175 months

Project Overview

It is an educational workshop platform.

Skeleton

Responsibilities:

Designed, developed, and deployed the entire software solution;
Integrated the app with Google Maps API;
Was responsible for the deployment and configuration of the solution server-side.

Project Tech stack:

Redux

MongoDB

React

Node.js

Express.js

Google Maps API

Keep in mind, the experience summary might exclude non-relevant projects

Education

2012

Telecommunications & Computer Science

Master of Science

Languages

English

Advanced

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