Freelance Fullstack Engineers in Warsaw

Freelance Fullstack Engineers in WarsawFreelance Fullstack Engineers in Warsaw

Projects People

proWarsaw, Poland

+ 12 years Full-Stack & Data Engineer | CRM | AI Integration

1x: Hired

5.0: Rating

31: Followers

expert

+ 12 years Full-Stack & Data Engineer | CRM | AI Integration

Cover image for Sports Platform Website — Landing page Design & Full-Stack Build

Sports Platform Website — Landing page Design & Full-Stack Build

0

6

Cover image for TYO-Omega Digital Platform Development

TYO-Omega Digital Platform Development

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2

Cover image for Konnect.io Website Development

Konnect.io Website Development

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3

Cover image for Half-Bakd Shopify Storefront Development

Half-Bakd Shopify Storefront Development

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2

Fullstack Engineer(6)

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

2

31

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

FACEIT | Next.js | TypeScript | Tailwind CSS

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8

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

E-commerce Shopping App | Flutterflow | Superbase

2

20

Cover image for Olympus Mobile Wallet | Flutter | Flutterflow

Olympus Mobile Wallet | Flutter | Flutterflow

0

18

Fullstack Engineer(2)

proWarsaw, Poland

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

13: 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

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59

Cover image for UNIQA Insurance Policy Analysis System

UNIQA Insurance Policy Analysis System

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19

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

A web platform for International Centre for Mathematics Ukraine

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20

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.

0

6

Fullstack Engineer(3)

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

New to Contra

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

3

Cover image for Secure Crypto Brokerage Platform Development

Secure Crypto Brokerage Platform Development

1

5

Cover image for Thera: A Digital Mental Wellness App

Thera: A Digital Mental Wellness App

1

2

Cover image for Softr: Internal admin systems

Softr: Internal admin systems

0

133

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 Professional Consulting

Professional Consulting

0

3

Cover image for App development and consulting services

App development and consulting services

0

7

Cover image for Social gambling platform

Social gambling platform

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1

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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

31

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

13

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

23

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

31

Fullstack Engineer(1)

AI & Web3 dev: bots, scrapers, automations, apps, crypto

21: Followers

AI & Web3 dev: bots, scrapers, automations, apps, crypto

Cover image for 👍 MVP mobile app for learning English for beginners Tech st...

👍 MVP mobile app for learning English for beginners Tech stack: Flutter (Dart) - iOS & Android - Audio-based quizzes/UI-UX.

2

3

331

Cover image for 😍 Created payments flow +

😍 Created payments flow + admin dashboard for a mobile app: login, checkout, recurring subscription, invoices, and payment history. I used Stripe for payments (Checkout + Subscriptions) and Prisma for the database layer. Implemented webhook handling for subscription status updates, invoice history, and access control. Also built an admin dashboard to manage users, plans, and transactions.

27

489

Cover image for 🚀 Created Photo-based AI body fat calculator The user uploa...

🚀 Created Photo-based AI body fat calculator The user uploads a photo, enters their personal information, and receives a result in body fat percentage, as well as personalized advice on how to reduce body fat percentage and how long it will take. Tech stack: Flutter (iOS-first), AI image analysis, APIs, mobile app development.

20

437

Cover image for 🚀 I recently built a

🚀 I recently built a custom AI automation system with 50+ AI agents designed to run business workflows automatically. The system includes specialized agents such as: • CEO agent (task coordination) • LinkedIn lead generation agent • Telegram lead finder • Email scraping & outreach agent • Job monitoring agent • AI response assistant • Data analysis agents All agents communicate through a centralized hub and can work 24/7 without manual supervision. The system handles tasks like: lead generation data scraping automated outreach monitoring opportunities workflow automation Tech stack used: Python • OpenAI / Claude • Automation agents • Web scraping • API integrations If you're looking to build custom AI agents for your business workflows, feel free to reach out.

1

60

Fullstack Engineer(3)

Sergei Serafimovich

From vision to product, without the chaos: https://aegte.dev

From vision to product, without the chaos: https://aegte.dev

Cover image for OctoSale

1

2

Cover image for AI Assistant Backend Development for Comic Book App

AI Assistant Backend Development for Comic Book App

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1

Cover image for Computer Vision Backend for Comic Book Cover Detection

Computer Vision Backend for Comic Book Cover Detection

1

5

Cover image for Christmas Sweater Image Editor Development

Christmas Sweater Image Editor Development

1

4

Fullstack Engineer(1)