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Taieb B.TB

Taieb B.

AI & Java Tech Lead — Voice AI • Spring Boot • RAG

€600/day
Mainz, DE
8-15 years

Average response time: 1 hour

About Taieb

I combine 10 years of Java/Spring Boot backend engineering with modern AI architectures.

With 10+ years of experience as Tech Lead & CTO, I design and build production-ready AI systems – from voice agents and document assistants to full backend architecture and integrations (CRMs, MLS, DocuSign, calendars, ticketing and property management systems).
  • English

    Native or bilingual

  • German

    Fluent

  • French

    Fluent

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

Experience

  • Compass AI — Compass Real Estate Voice Platform
    AI Architect & Tech Lead
    May 2025 - November 2025 (6 months)
    Scottsdale, AZ, USA
    Architected and delivered a voice-driven assistant that helps real estate agents create and update purchase contracts instead of manually editing PDFs.

    Automated the flow from MLS data + spoken input → structured contract data → ready-to-sign documents via DocuSign, reducing time-to-contract and manual errors.

    Designed modular LangChain pipelines with fallback logic, PIN-secured flows and robust logging so the system is safe to use in real negotiations.

    Tech: Retell / Vapi, Node.js, NestJS, FastAPI, LangChain, PGVector, AWS, Docker
    Retell LangChain FastAPI Amazon Web Services artificial intelligence
  • Axiombyte GmbH — Fractional CTO
    Tech Lead & Architecture
    December 2024 - May 2025 (5 months)
    Hamburg, Germany
    Took over the architecture and tech leadership of a new multi-tenant SaaS platform as Fractional CTO.

    Introduced clear service boundaries, improved data model and CI/CD so releases became predictable and safer.

    Set up automated testing, monitoring and error tracking, and supported planning/scope decisions with the founders.

    Tech: Node.js, NestJS, PostgreSQL, Docker, GitHub Actions, AWS / DigitalOcean
    Node.js Next.js Amazon Web Services IT Architecture Tech Lead
  • KipraxisHelfer GmbH
    AI Engineer
    January 2024 - November 2024 (10 months)
    Berlin, Germany
    Built a multilingual voice assistant that answers calls, pre-qualifies patients and books appointments instead of reception staff handling everything manually.

    Integrated voice flows with existing calendars and clinic processes so no new tools were needed, only automation of the existing workflow.

    Designed GDPR-compliant call flows in 10+ languages, with guardrails and fallback logic for real-world clinic usage.

    Tech: Vapi, OpenAI, Node.js, FastAPI, n8n, JavaScript
    vapi FastAPI Node.js artificial intelligence JavaScript

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Education

  • Master's in Computer Engineering
    ENSI
    2015
    Master's in Computer Engineering
  • Bachelor in Mathematics & Physics
    IPEIS
    2012
    Bachelor in Mathematics & Physics

Certifications

  • ISAQB Software Architect
    ISAQB
    2020
    software architect IT Architecture
  • Strategic Leadership and Managemen
    University of Illinois
    2023
    Team management

Skill set

Categories