Freelance Fullstack Engineers in Warsaw

Freelance Fullstack Engineers in WarsawFreelance Fullstack Engineers in Warsaw

Projects People

Jacob Dzikowski

Fullstack Engineer | AI Engineer | 6+ years of experience

$5k+: Earned

2x: Hired

5.0: Rating

42: Followers

Fullstack Engineer | AI Engineer | 6+ years of experience

Cover image for AI Real Estate Agent Development

AI Real Estate Agent Development

0

14

Cover image for AI Agent for Financial Analysis & Data Scraping

AI Agent for Financial Analysis & Data Scraping

0

23

Cover image for LangChain AI Agent | Automating Google Sheets

LangChain AI Agent | Automating Google Sheets

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53

Cover image for AI/ML Engineering & Development

AI/ML Engineering & Development

10

663

Fullstack Engineer(3)

proWarsaw, Poland

Full Stack Developer | Mobile Developer | AI Expert

5.0: Rating

10: Followers

Full Stack Developer | Mobile Developer | AI Expert

Cover image for Digipark Management | React | Next.js | Firebase

Digipark Management | React | Next.js | Firebase

3

41

Cover image for FACEIT | Next.js | TypeScript | Tailwind CSS

FACEIT | Next.js | TypeScript | Tailwind CSS

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13

Cover image for E-commerce Shopping App | Flutterflow | Superbase

E-commerce Shopping App | Flutterflow | Superbase

2

22

Cover image for Olympus Mobile Wallet | Flutter | Flutterflow

Olympus Mobile Wallet | Flutter | Flutterflow

0

20

Fullstack Engineer(2)

proWarsaw, Poland

Web & Mobile Developer | React Node ASP.NET Vue React Native

14: Followers

Web & Mobile Developer | React Node ASP.NET Vue React Native

Cover image for Shugaland Real Estate Web App Development

Shugaland Real Estate Web App Development

0

73

Cover image for UNIQA Insurance Policy Analysis System

UNIQA Insurance Policy Analysis System

0

24

Cover image for A web platform for International Centre for Mathematics Ukraine

A web platform for International Centre for Mathematics Ukraine

0

23

Cover image for Brights developed a SaaS booking

Brights developed a SaaS booking platform for beauty service providers to replace manual scheduling through Instagram messages and phone calls. The platform allows customers to book appointments online, view real-time availability, and pay directly through the app. We built a seamless scheduling experience that simplifies appointment management for both clients and salon staff. The system also includes CRM features, notifications, payment integrations, and tools for managing specialists and services. A key focus was creating an intuitive user experience that reduces friction during booking and improves operational efficiency. The platform was designed to support scalability for growing salons and beauty businesses with multiple locations or specialists. Automated workflows helped reduce missed appointments and manual coordination efforts. By digitizing the entire booking process, the solution improved customer convenience while helping businesses streamline daily operations and increase booking conversions.

1

95

Fullstack Engineer(3)

We are studio that create dynamic premium sites and webapps

New to Contra

We are studio that create dynamic premium sites and webapps

Cover image for Symbolic Rocks
Format
Full-featured SPA built with

Symbolic Rocks Format Full-featured SPA built with React 18, comprising 11+ pages and optimized for production deployment. Architecture and Stack Functional components with advanced rendering logic and performance optimizations. Centralized state management for cart, user, chats, language, and theme implemented via modern React hooks and context patterns. Responsive product grids, custom routing, and client-side caching for snappy UX. Modular component library designed for reuse across product and admin interfaces. Localization and Themes Automatic browser language detection plus manual switching between RU, UZ, and EN. Full light and dark themes with a signature purple-blue palette and tokenized design tokens for easy theming. Core Features Shopping cart with persisted state and checkout flows. Authorization system and user profile management. Admin panel with CRUD operations for products, users, and content. Admin chat for internal support and moderation. Advanced product mechanics: filters, sorting, variant support, and conversion-focused interactions. Release Update and Enhancements Chat authorization requirement — creating persistent chats now requires user authentication; authenticated chats are saved to user history and support extended features. Guest chat support — ephemeral chat mode allows unregistered users to start conversations with limited lifetime and reduced functionality. Updated product cards — redesigned card layout with improved interactive states, quick actions (buy, wishlist, preview), variant selectors, and analytics hooks for conversion tracking. Admin panel modernization — enhanced CRUD workflows, role-based access control, bulk actions, improved analytics and activity logging, and streamlined chat/content management tools. Implementation Notes Chat flows: token-based authentication for persistent chats; guest mode creates temporary contexts that expire and are not persisted to the main database. UX considerations: clear guest limitations and prompts to register for history and advanced features; progressive disclosure for admin bulk operations. Handoff: component library and Figma assets, API specs for chat, auth, roles, and bulk endpoints, plus test cases for chat persistence and guest expiry.

1

63

Cover image for Case Study: Zarafet Shop —

Case Study: Zarafet Shop — A Modern Multilingual E‑Commerce Platform Challenge The client needed an online store that would: Present products clearly and elegantly. Ensure a smooth and intuitive shopping experience. Work seamlessly across devices. Support multiple languages to reach a diverse audience in Uzbekistan. Solution We built Zarafet Shop, a sleek e‑commerce website focused on usability and aesthetics: 🛒 Product cards — clean layout with optimized images and clear structure. 📱 Responsive design — equally convenient on mobile, tablet, and desktop. ⚡ Streamlined checkout flow — minimal steps for maximum convenience. 🎨 Minimalist visual style — premium look that keeps the focus on products. 🌍 Multilingual support — the site is available in four languages: Russian, Uzbek, English, and Chinese, reflecting the most popular languages in Uzbekistan. 🔍 Performance optimization — fast loading times for a smooth shopping experience. Result Zarafet Shop demonstrates how an online store can be: functional, visually refined, user‑friendly, and accessible to a multilingual audience. This project reflects Emerald Empire’s philosophy: minimalist design, premium aesthetics, and attention to detail — tailored to both local and international users.

1

80

Cover image for Emerald Empire — a premium

Emerald Empire — a premium website emerald-empire.uz (http://emerald-empire.uz) is not just a web resource, but a fully-fledged next-level platform. Every page is designed to impress, from minimalist design to thoughtful architecture. Site Features Elegant branding with an emerald accent. Support for light and dark themes, as well as custom themes for maximum comfort. Interactive sections: personal account, forum, tournaments, store. Smart navigation: user-friendly menu, quick access to essential functions. High performance and reliable data protection. Currently undergoing refactoring.

2

135

Cover image for Symbolic Rocks
Format: A full-fledged

Symbolic Rocks Format: A full-fledged SPA application in React 18 with 11+ pages. Features: Centralized state management (cart, user, chats, language, theme) via modern React hooks. Architecture: Functional components with advanced rendering logic, responsive product grids, custom routing. Localization: Automatic browser language detection + manual switching between RU, UZ, and EN. Features: Shopping cart, admin panel with CRUD operations, admin chat, authorization system, and user profile. Themes: A full-fledged light and dark theme with a signature purple-blue palette.

1

136

Fullstack Engineer(5)

Frontend-Driven AI Full Stack | AI Automation & Headless CMS

Frontend-Driven AI Full Stack | AI Automation & Headless CMS

Cover image for Cross-Platform AI SaaS Enhancement for Sintra

Cross-Platform AI SaaS Enhancement for Sintra

1

4

Cover image for Thera: A Digital Mental Wellness App

Thera: A Digital Mental Wellness App

1

8

Cover image for Secure Crypto Brokerage Platform Development

Secure Crypto Brokerage Platform Development

1

7

Cover image for Softr: Internal admin systems

Softr: Internal admin systems

0

147

Fullstack Engineer(4)

Chris Gawlinski

I'll handle the entire project's tech side for you

I'll handle the entire project's tech side for you

Cover image for Social gambling platform

Social gambling platform

0

4

Cover image for App development and consulting services

App development and consulting services

0

9

Cover image for Professional Consulting

Professional Consulting

0

6

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Fullstack Engineer(3)

Software Engineer and Machine Learning Nerd

New to Contra

Software Engineer and Machine Learning Nerd

Cover image for Built an image-to-image translation system

Built an image-to-image translation system using Pix2Pix, training a conditional GAN on paired image datasets to generate transformed outputs from input images. Managed the full workflow from data preprocessing and model training to evaluation and deployment. Integrated the trained model into a web application, enabling users to upload images and receive real-time or near-real-time generated results through an interactive interface. The project demonstrated practical experience in deep learning, computer vision, and deploying ML models in user-facing applications.

0

50

Cover image for Engineered and maintained Azure cloud

Engineered and maintained Azure cloud environments supporting DevOps, identity, and machine learning workloads. Built and managed CI/CD pipelines, automated deployments, configured infrastructure and access policies through Microsoft Entra ID, and supported ML lifecycle workflows using Azure ML and Azure AI Foundry. Helped deliver secure, scalable, and production-ready cloud solutions for application and AI services.

0

27

Cover image for OpenClaw as an agentic AI

OpenClaw as an agentic AI system for autonomous task execution, tool use, workflow orchestration, scheduling, and multi-step reasoning. The project focuses on building a reliable AI agent that can manage prompts, skills, memory, automation, cron-based tasks, and integrations across products and operations. It includes design, testing, iteration, and deployment of scalable agent workflows for real-world business use.

0

44

Cover image for AI voice calling system using

AI voice calling system using Vapi and Twilio. The project connects a compliant Twilio phone number or SIP route to a Vapi assistant, enabling inbound and outbound voice calls with real-time conversation handling. It includes number provisioning, regulatory bundle setup for Poland, SIP or Twilio integration, call routing, testing, and deployment for production-ready voice automation.

0

50

Fullstack Engineer(1)

Lead Product & Full-Stack Engineer with 10+ years of exp.

New to Contra

Lead Product & Full-Stack Engineer with 10+ years of exp.

Cover image for BareScript language

BareScript language

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3

Cover image for Aleh Belski | Full-Cycle Software Partner

Aleh Belski | Full-Cycle Software Partner

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3

Cover image for Forensic Audit to Detect Billing Discrepancies

Forensic Audit to Detect Billing Discrepancies

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3

Cover image for Job Application Tracker

Job Application Tracker

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5

Fullstack Engineer(3)