William Liberg
Warsaw, Poland
William Liberg
AI Automation Developer | n8n, Zapier, HubSpot
Category : Artificial intelligence (AI)
Hi! I’m William Liberg, a Senior AI Automation & Full-Stack Developer specializing in:
• n8n, Zapier & HubSpot automations
• AI agents and LLM systems (Voice AI-Agent)
• Real estate lead automation
• Full-stack web & mobile development (Next.js, Flutter, React Native)
I help businesses eliminate manual work, scale operations, and implement AI-powered automation that saves time and increases revenue.
What I bring to the table:
✔️ 7+ years experience (AI, automation, SaaS development)
✔️ Real-world experience in real estate tech & CRM automation
✔️ Strong engineering background (Python, Node.js, API systems)
✔️ Clean workflows, long-term reliability, and fast delivery
✔️ Ability to turn business problems into automated systems
Whether you need a simple automation, a full AI agent, or a custom integration, I deliver solutions that work from day one.
• n8n, Zapier & HubSpot automations
• AI agents and LLM systems (Voice AI-Agent)
• Real estate lead automation
• Full-stack web & mobile development (Next.js, Flutter, React Native)
I help businesses eliminate manual work, scale operations, and implement AI-powered automation that saves time and increases revenue.
What I bring to the table:
✔️ 7+ years experience (AI, automation, SaaS development)
✔️ Real-world experience in real estate tech & CRM automation
✔️ Strong engineering background (Python, Node.js, API systems)
✔️ Clean workflows, long-term reliability, and fast delivery
✔️ Ability to turn business problems into automated systems
Whether you need a simple automation, a full AI agent, or a custom integration, I deliver solutions that work from day one.
Portfolio
Working hours
- Monday:08h00 To 18h00
- Tuesday:08h00 To 18h00
- Wednesday:08h00 To 18h00
- Thursday:08h00 To 18h00
- Friday:08h00 To 18h00
- Saturday:Not available
- Sunday:Not available
Leading the automation strategy for real estate operations across Ray White franchises. Built AI-powered messaging bots for buyer/seller inquiries, automated valuation requests, and follow-up funnels. Implemented advanced HubSpot automation frameworks, integrated n8n for end-to-end workflow orchestration, and connected internal property systems via API. Increased lead conversion speed by 70% and enhanced agent productivity nationwide.
Developed large-scale workflow automations for property marketing, customer onboarding, and agent communications. Connected HubSpot pipelines with third-party real-estate tools using APIs, Zapier, and custom n8n workflows. Integrated AI assistants for automated email replies, appointment scheduling, and listing categorization. Achieved a 60% increase in operational efficiency for internal teams and partner agencies.
Designed and deployed automation systems for property lead management across REA’s digital platforms. Built n8n and Zapier workflows that automated listing updates, inquiry routing, and CRM syncing into HubSpot. Implemented AI-powered lead qualification and follow-up sequences, reducing manual agent tasks by 45%. Improved data accuracy and enabled faster real estate customer response times.
- 🇬🇧 English
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