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Castillians

AI Engineering, Voice API

Castillians

AI Engineer developing AI-powered chatbots to enhance customer support in telecommunications industry. Collaborating with teams to implement new technologies and ensure system efficiency.

Posted 5/9/2026contractRemote • 🇮🇪 IrelandMid-LevelSeniorWebsite

About the role

Key responsibilities & impact
  • Designing and enhancing AI-powered chatbots for customer interactions in billing, sales, and technical support to reduce reliance on human agents.
  • Automating business processes to improve operational efficiency using AI technologies.
  • Contributing to the development and maintenance of scalable AI infrastructures and integrate new machine learning techniques and large language models (LLMs) where applicable.
  • Evaluating and working with various AI models including LLMs, reasoning models, machine learning, and function calling models for different purposes.
  • Contributing to the roadmap for integrating speech-to-text functionality and real-time voice APIs, especially for telephony systems.
  • Working closely with other team members to evaluate and implement new AI technologies and tools, ensuring robust and reliable AI systems.
  • Participating in the testing and quality assurance of AI-driven systems, ensuring accurate and efficient performance.
  • Managing and maintaining AI agents across various platforms, ensuring their smooth operation and continuous improvement.

Requirements

What you’ll need
  • University degree in Computer Science, Engineering or equivalent
  • At least 5 years of experience in a similar position
  • Experience developing and deploying AI chatbots, particularly in customer service or support roles (billing, sales, technical support)
  • Strong background in automation tools and techniques, with practical examples of how you've approached and solved automation challenges
  • Familiarity with machine learning models, particularly LLMs and reasoning models
  • Practical experience using OpenAI or similar AI models (ChatGPT, Mistral, etc.)
  • Experience working with APIs in OpenAI and other AI models for building large-scale applications
  • Exposure to frameworks for large-scale AI projects and managing AI agents effectively
  • Hands-on experience with Robot Framework or similar testing frameworks
  • Understanding of voice technologies and APIs, including experience with OpenAI’s real-time API (or openness to learning and exploring these technologies)
  • Comfortability working with a fast-paced, evolving roadmap, especially focusing on integrating new features like speech-to-text functionality.

Benefits

Comp & perks
  • Flexible working arrangements
  • Opportunity for repeat engagements based on performance

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Hard Skills & Tools
AI chatbotsmachine learninglarge language modelsautomation toolsAPIsRobot Frameworkspeech-to-text functionalityreal-time voice APIstesting frameworksscalable AI infrastructures
Soft Skills
collaborationproblem-solvingadaptabilitycommunicationquality assuranceoperational efficiencycontinuous improvementteamworkevaluating technologiesroadmap development
Certifications
University degree in Computer ScienceEngineering degreeequivalent qualifications