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Paweł – Node.js, AWS, Typescript, experts in Lemon.io

Paweł

From Poland (GMT+2)

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Full-stack Web DeveloperSenior
Hire developer
21 years of commercial experience
Art and creativity
Biotech
Cryptocurrency
Fintech
Healthtech
Human resources
Marketing
Social media
Enterprise software
Platforms
Virtual reality software
Lemon.io stats
1
projects done
98
hours worked
1
offers now 🔥

Paweł – Node.js, AWS, Typescript

Pawel is a mighty coder with 20 years of commercial experience under his belt. Having mastered his skills as an iOS developer, he decided to immerse himself into Full-stack JavaScript/Typescript development, utilizing powers of React, Node.js and AWS for creating web experiences. Pawel feels thrilled about building architecture, solving complex tasks, and discovering new techs: he has recently started working with Golang and would love to dive deeper into the Web3 and AI world. His background includes projects within fintech, social media and healthtech domains.

Main technologies
Node.js
6 years
AWS
4 years
Typescript
4 years
JavaScript
6 years
React
6 years
Blockchain
1 year
Additional skills
iOS
GCP
Elixir
Golang
Terraform
Kubernetes
Angular
Amazon RDS
AWS Lambda
TypeORM
PostgreSQL
AWS CloudFormation
Amazon Cognito
Swift
Nest.js
Knex.js
Flutter
DevOps
Heroku
BigQuery
Cloud Architecture
Serverless Computing
Python
Firestore
MongoDB
ElasticSearch
Web 3.0
DynamoDB
web3.js
Ethereum
Ethers.js
MySQL
Docker
Kotlin
Docker Compose
React Native
RabbitMQ
Redis
Ruby on Rails
Apache Airflow
Android
NFT
Ansible
Stripe API
OAuth
GraphQL
DigitalOcean
Prisma
Material UI
Apollo GraphQL
Socket.io
WebSocket
Express.js
Redux Toolkit
Redux Thunk
Redux Saga
Redux
Microservices
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Back-end / Full-stack Developer
Jul 2022 - Jan 20236 months
Project Overview

It's a company that connects investors with companies, providing transparent, comparable ESG data in real-time.

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Responsibilities:
  • Developed new features based on business requirements;
  • Built Golang back-end and Angular front-end;
  • Updated GCP infrastructure using Terraform;
  • Wrote unit and integration tests;
  • Fixed bugs;
  • Architected migration from a legacy system to the main platform (API design for front-end client, back-end integration with Contentful CMS system, scripts for migrating existing data/users).
Project Tech stack:
Golang
Angular
Kubernetes
GCP
Terraform
Auth0
Typescript
JavaScript
Express.js
Senior Software Engineer / DevOps
Jan 2020 - Jan 20233 years
Project Overview

It's a social app that integrates with platforms like Facebook, Instagram, LinkedIn, Tiktok, and Pinterest to help manage and plan to post.

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Responsibilities:
  • Created a JavaScript tool that parsed existing Node.js app codebase and generated an endpoints list in Swagger output format;
  • Resolved subscription payments issues on the iOS platform;
  • Created scripts for exporting data from MongoDB and Google Firestore, aggregated them, and imported them to Google BigQuery;
  • Reduced AWS cloud costs by half;
  • Built a gathering logs system for mobile clients and back-end components based on the ElasticSearch cluster.
Project Tech stack:
iOS
Swift
MongoDB
BigQuery
Node.js
AWS
Lambda
GCP
Firestore
ElasticSearch
DevOps
React
Python
Heroku
Cloud Architecture
Serverless Computing
AWS CloudFormation
Senior Software Engineer
Apr 2022 - Aug 20224 months
Project Overview

It's an NFT marketplace system to sell artists' artworks based on Ethereum smart contracts.

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Responsibilities:
  • Implemented a method to generate a signature used for authorization of the minting process;
  • Created a back-end for the auction system to manage users, organizations, and auction drafts;
  • Built a solution to sync auctions and auctions related entities from the Contentful CMS system with the back-end system;
  • Created a solution to sync Ethereum network events with the back-end system.
Project Tech stack:
React
Typescript
JavaScript
Node.js
Lambda
DynamoDB
Serverless Computing
Web 3.0
web3.js
Ethers.js
Ethereum
Blockchain
NFT
Stripe API
Express.js
Tech Lead
Jan 2022 - Jul 20225 months
Project Overview

It's an app that provides access to muscle-mind analysis technology and education on interpreting the analysis data and creating resulting biofeedback training methods.

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Responsibilities:
  • Designed back-end, front-end, and mobile architecture (Kubernetes cluster);
  • Implemented front-end backoffice admin panel using React, React Query, and React Admin;
  • Built back-end using Node.js, Typescript/JavaScript, and PostgreSQL database;
  • Supported Flutter mobile app development.
Project Tech stack:
React
Nest.js
Node.js
Typescript
JavaScript
TypeORM
Flutter
iOS
PostgreSQL
Redux
Express.js
Tech Lead / Architect
Jan 2021 - Feb 20221 year 1 month
Project Overview

It's an all-in-one mobile platform where health-conscious users can easily track their meals' nutrition and plan their diet.

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Responsibilities:
  • Designed solution architecture based on AWS services for back-end, mobile, and ETL processes;
  • Created back-end using AWS AppSync with AWS Lambda resolves and GraphQL;
  • Supported iOS native mobile client development (Swift);
  • Designed and implemented ETL process to import USDA food database using AWS Glue service;
  • Created back-office admin panel using React framework.
Project Tech stack:
Typescript
Node.js
AWS
Lambda
AWS CloudFormation
JavaScript
React
Amazon RDS
PostgreSQL
Amazon Cognito
Swift
iOS
Knex.js
DevOps
Ansible
Redux
Express.js
Senior Full-stack Developer
Dec 2017 - May 20213 years 5 months
Project Overview

It's a platform that rewards company employees for making positive health changes and staying motivated.

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Responsibilities:
  • Originally, was responsible for the iOS app development and bug-fixing and then switched to a full-stack role;
  • Integrated the platform with 3rd party providers like Garmin, Fitbit, and Apple HealthKit to gather, store, and process events from these platforms;
  • Built several microservice architecture components, which were integrated either by REST/GraphQL API or RabbmitMQ message broker.
Project Tech stack:
Ruby on Rails
Node.js
Typescript
Knex.js
JavaScript
MySQL
PostgreSQL
Redis
AWS
iOS
Swift
Kotlin
Android
Golang
Docker
Docker Compose
Kubernetes
Apache Airflow
RabbitMQ
React
React Native
Redux
Redux Thunk
Redux Saga
Express.js

Education

2007
Electronics And Telecommunication / Multimedia Internet Systems
Bachelor of Engineering

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