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Kostas G.KG

Kostas G.

AI Product Leader | Conversational & Agentic AI

€900/day
Athens, GR
15+ years

Average response time: 1 hour

About Kostas

I am an AI Product Leader with nearly two decades of experience building and scaling digital products, with a strong focus in recent years on Artificial Intelligence, Conversational AI, and agentic systems.

My background combines deep technical expertise with product leadership. I started as a software engineer and evolved into product roles, which allows me to bridge business needs with complex technical implementations. Today, I design, prototype, and deliver AI-driven products that move from concept to production, focusing on real-world impact rather than experimentation.

I have led the development of conversational AI platforms, voice assistants, and AI-powered workflows, working across the full stack of technologies including LLMs, speech-to-text, text-to-speech, and backend systems. I place strong emphasis on rapid prototyping to validate ideas early, reduce risk, and accelerate time-to-market before scaling solutions to production.

Currently, I operate at a leadership level, defining product strategy, aligning stakeholders, and driving execution across cross-functional teams. I am comfortable working in ambiguous environments, structuring problems, and turning them into clear product roadmaps and deliverables.

What I can help you with:
•Defining AI product strategy and roadmap
•Rapid prototyping and validation of AI use cases
•Designing conversational AI and voice-based systems
•Building and scaling AI-powered workflows and automation
•Bridging product, engineering, and business teams
•Taking AI products from idea to production
  • Greek

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Kerna Health Inc.
    Head of AI Product & Director, Kerna AI (Europe)
    TECH
    October 2023 - Today (2 years and 10 months)
    Athens, Greece
    ● Built Kerna AI Lab from zero; hired and led cross‑functional product and engineering teams.

    ● Defined product strategy for telehealth voice assistants, EHR integrations and remote patient monitoring; prioritized roadmap based on user research and clinical needs.

    ● Delivered agentic voice assistants that reduce clinician administrative effort and enhance patient engagement and adherence; integrated real‑time ASR/TTS pipelines and prompt‑driven agent workflows.

    ● Instituted product metrics and analytics frameworks to measure adoption, customer satisfaction and clinical outcomes; iterated based on data insights.
    artificial intelligence Product Development Product management Machine learning Team management
  • VoiceWeb S.A.
    Director of Product
    TECH
    January 2019 - September 2023 (4 years and 8 months)
    Athens, Greece
    ● Spearheaded development of ENELAI digital assistant platform; integrated LLMs, RAG and ASR/TTS; increased enterprise adoption and reduced infrastructure costs.


    ● Designed and launched state‑of‑the‑art NLP pipeline, improving conversational accuracy and enabling next‑generation dialogue management.


    ● Owned product roadmaps, defined MVPs, gathered feedback from clients, and iterated features based on market fit.

    ● Led cross‑functional teams (data scientists, linguists, engineers, designers); aligned technology and business objectives to drive revenue growth.

    ● Partnered with telecom executives and clients to deliver Vodafone Turkey's voice assistant, improving CSAT and lowering operational expenses.
    Product management Team management Product Development Machine learning Market analysis
  • VoiceWeb S.A.
    Development Team Leader
    TECH
    February 2018 - December 2018 (10 months)
    Athens, Greece
    ● Managed global delivery of conversational AI solutions for major telecom clients using proprietary dialogue engine.

    ● Collaborated with cross‑functional teams to deliver bespoke IVR and digital assistant solutions; improved client CX metrics and efficiency.

    ● Championed knowledge sharing and training across teams to accelerate AI adoption.
    artificial intelligence Team management Machine learning Product Development Back-End development

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Education

  • MSc
    University of Essex
    MSc
  • BSc
    University of Sheffield (City College
    BSc

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