Andrzej
From Malaysia (GMT+8)
9 years of commercial experience
Lemon.io stats
2
projects done1158
hours workedOpen
to new offersAndrzej – 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.
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Potentially possibleExperience Highlights
Senior Full-stack Developer / Architect
Content creators management platform.
- Designed and deployed background scraping jobs to AWS K8s cluster;
- Conducted external API reverse engineering;
- Implemented performance optimizations.
Front-end Developer
A global fine art platform that combines art trading, NFT, and data product components.
- 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).
Full-stack Developer
From the scratch development of a search tool for mortgage optimization leads.
- Delivered a fully functional MVP rapidly, with a focus on quality;
- Configured and deployed the solution to the AWS cloud (Amplify, Beanstalk, Lambda).
Front-end Developer
It is an innovative construction plant management software.
- 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.
Lead Front-end Developer
It is an innovative social platform for sharing and discovering news and media.
- 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.
Full-stack Developer
It is an obituary generator web app.
- 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.
Full-stack Developer / Architect
It is an educational measurement and evaluation system based on the QTI standard.
- 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).
Full-stack Developer / Architect
It is an educational workshop platform.
- 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.