Freelance Backend Engineers in WarsawFreelance Backend Engineers in Warsaw
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Tomasz Iwanski's avatar
Tomasz Iwanski
proWarsaw, Poland
+ 12 years Full-Stack & Data Engineer | CRM | AI Integration
1x
Hired
5.0
Rating
30
Followers
BUILDSHIP_EXPERT

expert

+ 12 years Full-Stack & Data Engineer | CRM | AI Integration
Cover image for OMA Health Marketing Website Development
OMA Health Marketing Website Development
0
1
Cover image for Stripe Payment Webhook Integration
Stripe Payment Webhook Integration
0
2
Cover image for CRUD API Workflow (Create Record) with Buildship
CRUD API Workflow (Create Record) with Buildship
0
4
Cover image for FaithAwake Alarm App Development
FaithAwake Alarm App Development
0
8
Backend Engineer(3)
Sergei Serafimovich's avatar
Sergei Serafimovich
Warsaw, Poland
From vision to product, without the chaos: https://aegte.dev
From vision to product, without the chaos: https://aegte.dev
Cover image for AI Assistant Backend Development for Comic Book App
AI Assistant Backend Development for Comic Book App
1
2
Cover image for Computer Vision Backend for Comic Book Cover Detection
Computer Vision Backend for Comic Book Cover Detection
1
6
Cover image for Christmas Sweater Image Editor Development
Christmas Sweater Image Editor Development
1
4
Cover image for OctoSale
OctoSale
1
2
Backend Engineer(2)
Wiktor Witkowski's avatar
Wiktor Witkowski
Warsaw, Poland
Software Engineer - Api, Automation, Scripts
Software Engineer - Api, Automation, Scripts
Cover image for Microservices Architecture System
Microservices Architecture System
0
6
Cover image for Leasing Platform
Leasing Platform
0
4
Cover image for Excel Automation
Excel Automation
0
8
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Backend Engineer(2)
Yevhenii Rozov's avatar
Yevhenii Rozov
Warsaw, Poland
AI & Web3 dev: bots, scrapers, automations, apps, crypto
21
Followers
AI & Web3 dev: bots, scrapers, automations, apps, crypto
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
490
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
Cover image for 🚀 Content Marketing - My
🚀 Content Marketing - My Real Cases Over the past 5+ years I’ve been building and scaling crypto-focused content ecosystems, combining short-form video, Telegram growth, and performance-driven funnels. Here are some real numbers behind my work: • Built a crypto Telegram community to 25K+ subs, monetized via ads & partnerships • Reached 100K+ total followers across all social platforms • Created and published 10000+ content posts • Generated $200K+ total revenue through crypto content, traffic funnels, and marketing collaborations • Produced high-volume short-form content (TikTok / YouTube Shorts / Reels) • Created and launched my own crypto products and tools • Work with 100+ influencers • Built a full growth funnel & “content factory” - strategy, converting views into subscribers and revenue.
3
594
Cover image for 🙌 Some of my Telegram chatbot development projects 1. PARSE...
🙌 Some of my Telegram chatbot development projects 1. PARSER + AI WRITER 2. TIKTOK Viral Scanner 3. YOUTUBE VIDEO TRANSLATOR 4. CRYPTO HEDGER 5. REPOST TT TO SHORTS And 20+ others
3
300
Backend Engineer(1)
Jacek Adamski's avatar
Jacek Adamski
Warsaw, Poland
Frontend-Driven AI Full Stack | AI Automation & Headless CMS
New to Contra
Frontend-Driven AI Full Stack | AI Automation & Headless CMS
Cover image for Softr: Internal admin systems
Softr: Internal admin systems
0
136
Cover image for Paramark SaaS Marketing Analytics Platform Redesign
Paramark SaaS Marketing Analytics Platform Redesign
1
3
Cover image for Travala Online Booking Platform Redesign and Optimization
Travala Online Booking Platform Redesign and Optimization
1
3
Cover image for Cross-Platform AI SaaS Enhancement for Sintra
Cross-Platform AI SaaS Enhancement for Sintra
1
3
Backend Engineer(1)