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Andrzej Karawaj

Ruby Developer

5 years of experience

● Unavailable
Andrzej Karawaj
About me

A few words about myself

Ruby on Rails Developer with experience in low-code tools like Airtable and JetAdmin. I pick the right tool for each problem — sometimes low-code is enough, sometimes a custom app is better. I work directly with clients, turn their needs into clear tickets, and build quick prototypes to test ideas. I also use AI-assisted development to work faster.

Technical skills

Tech stack

Programiming & Frameworks

Ruby Ruby on Rails React.js (Next.js) TailwindCSS PostgreSQL

Tools

Docker Git Claude Code Miro Trello Linear

Languages

English (Intermediate) Polish (Native)

Certificates

Next.js Masters (Next.js 15 course) AI Devs 3 (LLMs, APIs, AI integrations, AI agents)

Low-code/ No-code

JetAdmin Airtable

AI & LLMs

Claude Code MCP's Pencil.dev AI agents AI-assisted prototyping
Personality & work style

Who I am and how I work

Working style

  • I like to work step by step. I use prototypes and AI tools to test ideas quickly before building the full solution. I also enjoy talking with clients and helping them turn business needs into working software.

Personality traits

  • Communication
  • Curious
  • Adaptable
Education

Schools & universities

2012 – 2016

Bialystok University of Technology

Automatic Control and Robotics (Bachelor)

2016 – 2020

Bialystok University of Technology

Electrical and Electronic Engineering (Master)

2018 – 2019

Bialystok University of Technology

JavaScript Developer (Postgraduate)

2021 – 2022

Bialystok University of Technology

E-commerce manager (Postgraduate)

Experience

Projects & experience

Django Slack Storage

2019-10 – 2020-01

Django Slack Storage - storage management application with Slack integration. Built during Python Intern period.

Technologies

Django Docker Redis Celery Bootstrap Selenium

Responsibilities

  • Creation and modification of templates
  • Setup Redis
  • Creating views

Internal CRM system

Internal CRM built for a company selling windows and doors. Helps the sales team manage clients, quotes, and orders in one place — replacing spreadsheets with a dedicated tool tailored to their process.

Technologies

Airtable, Javascript

Responsibilities

  • Implementing functionalities in Airtable to build a dedicated CRM
  • Automations to streamline work within the CRM system

Marketing data analytics dashboard

Analytics system used by marketing teams to explore and understand data from multiple sources in one place. Started as a fast-delivered JetAdmin solution, then evolved into a custom Next.js application as the needs of the business grew.

Technologies

Jetadmin SQL BigQuery Next.js

Responsibilities

  • Writing SQL queries
  • Creating views in JetAdmin
  • Migrating views from JetAdmin to Next.js application

Content marketplace platform

Two-sided platform for ordering and creating written content, such as articles, product descriptions, SEO texts, and sponsored posts. Used by both clients and copywriters.

Technologies

Ruby on Rails PostgreSQL Hotwire (Turbo, Stimulus) RSpec

Responsibilities

  • Implementation of new features

Construction Projects Management App

Custom web application built for a construction company to manage their internal projects. Used by the team to plan work, coordinate people on-site, and keep project information in one place instead of spreadsheets.

Technologies

Ruby on Rails Vue.js Heroku

Responsibilities

  • Creation and modification of existing views
  • Adding functionalities
  • Improve performance of application

E-commerce app

E-commerce store originally built on Ruby on Rails with the Spree platform. Later migrated to Shopify to reduce maintenance overhead and take advantage of built-in e-commerce features.

Technologies

Ruby on Rails Spree RSpec Capistrano Shopify

Responsibilities

  • Creation and modification of existing views
  • Adding new products

CMS Website

Content management system

Technologies

Ruby on Rails Capistrano RSpec

Responsibilities

  • Creation and modification of existing views
  • Adding new functionalities

CRM & operations system for pallet manufacturer

Custom CRM system for a wooden pallet manufacturer and logistics company. Integrates orders, production, warehouse, transport, and four collection points into one system — replacing phone calls and Excel spreadsheets with real-time data and reporting.

Technologies

Airtable, Airtable automations, Next.js

Responsibilities

  • Implementing functionalities in Airtable to build a dedicated CRM
  • Designing data structure covering CRM, orders, production, warehouse, and transport
  • Building automations to replace manual processes
  • Working directly with the client's consultant to translate requirements into system design
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