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Farzad CastleFC

Farzad Castle

AI & Software Developer | Technical Product Owner

€750/day
Utrecht, NL
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Farzad

Technical Product Owner | AI System Architect
Looking for a Technical Product Owner or AI Architect who doesn't just get caught up in the AI hype, but actually launches scalable software? I bridge the gap between the abstract business needs of the management team and the production-ready tech stacks of the developers.

What sets me apart
I bring a unique combination: nearly 10 years of experience in enterprise stakeholder management at the management and C-level, combined with deep, hands-on knowledge of cloud and AI architectures. I can talk just as easily with the CEO about business ROI as with developers about database schemas and RLS policies.

Proven Results & Projects

Fermly (AI-Driven ATS/CRM): Design of a recruitment platform powered by 40+ serverless edge functions. Use of LLM tool-calling (Gemini) for candidate matching. Result: Back office workload reduced by 80%.

FarsNed (Bilingual LMS SaaS): Building an e-learning platform with complex Mollie subscription billing and a context-aware AI tutor. Result: 350+ active, paying users within 6 months.

Dentuul (Dental AI Voice SaaS): Multi-tenant scheduling platform integrating ElevenLabs conversational AI for hands-free appointment management (live beta test with 3 B2B clinics).

Boekly (Multi-Tenant B2B2C SaaS): Highly secure salon platform with Point-of-Sale routing, encrypted data isolation, and tenant impersonation with automated audit logs.

My Technical Stack
AI & Automation: LLM Orchestration (Claude, Gemini, OpenAI), RAG, Tool-Calling, Prompt Engineering, Voice AI (ElevenLabs, Retell), n8n.
Backend & Cloud: Supabase, PostgreSQL database design, Row-Level Security (RLS), Deno Edge Functions, Webhook Idempotency.
Frontend & FinTech: Next.js 14, React, TypeScript, Stripe Connect, Mollie API, Resend, GitHub.
  • Dutch

    Native or bilingual

  • English

    Native or bilingual

  • Persian

    Native or bilingual

Can work on-site
Utrecht (up to 50km)

Experience

  • Fijnn.nl
    Founder & Technical Product Owner
    March 2015 - Today (11 years and 4 months)
    Zeist, Netherlands
    Leading a digital innovation agency focused on building scalable, AI-driven SaaS platforms. Acts as the sole Technical Product Owner and Architect, orchestrating modern tech stacks (React, Next.js) and autonomous AI engineering workflows to deliver enterprise-grade software from concept to production. Key Product Launches
    AI Automation Technical Product Owner Business Development Business Plan Software Development
  • Boekly
    Technical Product Owner & Architect
    January 2026 - Today (6 months)
    • • Boekly (Multi Tenant B2B2C SaaS): | Architecture and rollout of a highly secure platform for salons and beauty clinics, including a dual-path Point-of-Sale system and an encrypted "God Mode" tenant impersonation engine with automated legal audit logs. Includes hands-free appointment management via natural language. (Currently in development)
    • • Current impact: Pre-launch / in active development. This is my technical flagship, bringing together all best practices from previous architectures.
    AI Automation Software as a Service (SaaS) Software Architect Back-End Development Software Architecture
  • FarsNed
    AI System Architect & Technical Product Owner
    October 2025 - February 2026 (4 months)
    • • FarsNed (Bilingual LMS SaaS): https://farsned.nl Architecture and development of a multi-level (A1 to C2) learning management system with Mollie subscription billing (€11.99/month MRR + separate upsells), real-time gamification, and an AI tutor that tracks user progress via streaming OpenAI responses.
    • • Current impact: Built up to 350 active, paying users within 6 months of launch.

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Education

  • Bachelor of International Business and Management Studies
    University of Tehran
    Bachelor of International Business and Management Studies
  • Diploma
    Diploma

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