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From: Poland

Location: Warszawa, PL

On Useme since 26 May 2016

About me

Senior Fullstack Developer with 15+ years of experience building web applications and business systems.

I specialise in end-to-end delivery: analysis, architecture, frontend, backend, and production deployment.

Tech stack: Angular, TypeScript, RxJS, NestJS, Node.js, REST API, PostgreSQL, Appwrite, PWA.

I build modern, fast, and scalable digital products: marketplaces, booking systems, community platforms, admin panels, SaaS products, and startup MVPs.

Strong focus on security, performance, and clean, maintainable code. I also develop secure authentication systems, authorisation flows, and third-party API integrations.

If you need someone who can independently deliver your project professionally, on time, and without agency overhead, feel free to contact me.

Categories

Web development > Website development
Coding and IT > Software
Coding and IT > Mobile apps
Coding and IT > Web apps
Coding and IT > IT projects

Skills

Agile development Angular API Backend Business analysis Business process Cms CMS Development Coaching Coding CRM Css Data analysis Databases Domain name E-commerce Education E-learning Email campaign E-mail marketing E-marketing English ERP Express.js Frontend General applications Html Html5 Individual projects Javascript Kanban Linux MAILERLITE Mobile applications MongoDB Mysql N8n NodeJS On-line training Payment module Postgresql RODO Rwd SaaS Scrum SCSS Sql Training Typescript VPS Wcag Web application Web development Web site

Portfolio

GoldenLine.pl

Praca w oparciu o technologie: HTML, CSS/LESS, Twig, Symfony, JavaScript, ES6, React, Sails.js (Express.js), PostgreSQL, Mocha, Grunt.js, Jekyll, Gulp.js.

- utrzymywanie jakości warstwy front-endowej serwisu GoldenLine.pl - implementacja...

CV_Adrian-Cieślak.pdf

CV_Adrian-Cieślak