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Deloitte Logo Deloitte · IT - Software Development

Senior Gen AI & Prompt Engineer

Greece, Thessaloniki · Job Posted April 06, 2026
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Job Description

Senior Gen AI & Prompt Engineer @ Deloitte Competence Center. Are you looking for an opportunity in Thessaloniki, Greece that offers you a hybrid working model? Are you ready to work on international projects for industry-leading clients around the world and elevate your tech consulting career to an international level?

Job Responsibility

  • GenAI-Native Platform Implementation: We specialize in deploying GenAI-powered applications across software development, integration, and testing, enabling organizations to accelerate the adoption of Generative AI solutions while ensuring robustness, security, and scalability
  • Accelerated AI Capabilities: Our services drive the rapid adoption of Generative AI by integrating advanced AI models into enterprise environments, unlocking new opportunities for automation, content generation, knowledge management, and enhanced decision-making
  • Advanced AI Architectures: Our expertise lies in designing architectures that seamlessly integrate Generative AI models with enterprise systems, enabling a secure, scalable, and compliant AI ecosystem that maximizes business value

Requirements

  • Proven experience working with Large Language Models (LLMs) and Generative AI architectures for tasks such as text generation, summarization, translation, code generation, and multimodal AI applications
  • Mastery in designing effective and optimized prompts, leveraging Few-shot learning, Chain-of-Thought (CoT), Retrieval-Augmented Generation (RAG), and Self-Consistency prompting to enhance model performance and contextual accuracy
  • Hands-on experience integrating Generative AI models into enterprise applications, chatbots, virtual assistants, and knowledge management systems using LangChain, LlamaIndex, or similar orchestration tools
  • Strong understanding of LLM inference optimization, model distillation, parameter-efficient fine-tuning (LoRA, QLoRA), and deployment strategies on cloud (AWS, Azure, GCP), on-premises, and edge environments
  • Expertise in embedding models, vector databases, and RAG pipelines to enhance model relevance and contextual understanding
  • Strong experience with LLM APIs (e.g. OpenAI, Anthropic) and open-source model hosting, including running private AI models in secure environments for enterprises

Nice to have

  • Experience in fine-tuning and adapting foundation models (e.g., GPT, Claude, Gemini, LLaMA) using domain-specific datasets, reinforcement learning (RLHF), and instruction tuning techniques
  • Hands-on experience with Django and FastAPI for building scalable backend services and APIs for Generative AI applications. Experience with React.js for developing interactive AI-powered user interfaces and front-end experiences
  • Familiarity and use of any VCS (e.g., git)
  • Experience with Docker and Kubernetes

What we offer

  • Modern hybrid workplace, characterized by flexibility and Smart Working
  • Empowered well-being: We provide multiple program offerings to support your well-being needs (flexible working arrangements, extra days of leave, parental allowances)
  • Engagement within international large-scale teams and projects, with opportunities to travel for training or client purposes
  • Constant opportunities for learning with unlimited access to internal and external learning platforms and sponsored certificates aligned with business needs and technology trends
  • Challenging and innovating environment where personal development and growth are encouraged, always with transparency and trust
  • Diverse culture and active communities that enable you to bring yourself to work
  • Team Building and Corporate Social Responsibility Activities
  • A buddy to support you with your onboarding
  • Private medical health insurance plan
  • Ticket restaurant card
  • Exclusive Discounts to several retail providers, restaurants and others
  • Mobile phone
  • Fresh fruits and unlimited coffee every day at our offices
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