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inventYOU
AI & Machine Learning 6h ago

Prompt Engineering Specialist

inventYOU
GreeceGreece
Full-time
Not Disclosed
Mid-Level

Job Description

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NLPAI EngineerOpenAI APILLM

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We are looking for a Prompt Engineering Specialist to design, optimize, evaluate, and maintain prompts for Large Language Model (LLM) applications.

In this role, you will work with modern LLM platforms and orchestration frameworks, collaborating with Business Analysts, domain experts, and technical teams to translate functional requirements into effective and reliable prompt strategies.

Key Responsibilities

  • Design, test, and iteratively refine prompts for LLM-based applications
  • Develop and maintain prompt libraries, templates, and reusable prompt components
  • Evaluate and benchmark prompt performance across different LLM platforms and model versions
  • Translate functional and business requirements into effective prompt strategies
  • Apply advanced prompt-engineering techniques, including zero-shot, few-shot, RAG, role prompting, and structured output prompting
  • Identify and mitigate risks such as hallucinations, prompt injection, data leakage, bias, and inconsistent outputs
  • Define and document prompt design decisions, evaluation criteria, and version history
  • Support testing, Quality Assurance, and User Acceptance Testing activities for LLM solutions
  • Develop automation and testing pipelines for prompt evaluation
  • Integrate prompts and LLM capabilities through APIs
  • Provide guidance and knowledge transfer to technical and non-technical stakeholders on effective LLM interaction patterns

Requirements

  • Minimum 2 years of professional experience working with and optimizing LLMs and/or prompt development and engineering
  • Bachelor’s degree in Computer Science, Artificial Intelligence, Data Science, IT, or a closely related field; alternatively, a non-university degree with at least 5 years of IT experience
  • Hands-on experience with major LLM platforms and APIs, such as:
    • OpenAI / GPT
    • Anthropic / Claude
    • Mistral
    • Meta LLaMA
    • Equivalent commercial or open-source models
  • Strong knowledge of prompt design techniques, including zero-shot, few-shot, RAG, role prompting, and structured output prompting
  • Experience with LLM orchestration frameworks
  • Programming skills for prompt automation, testing pipelines, and API integration
  • Experience with methodologies for evaluating LLM outputs, including human evaluation and automated metrics
  • Understanding of LLM architecture and tokenization sufficient to support effective prompt-design decisions
  • Understanding of common LLM risks, including hallucination, prompt injection, data leakage, and bias

You will be a great candidate for us if you

  • Have a strong understanding of how different LLMs respond to prompt design and context
  • Enjoy experimenting, evaluating, and systematically improving AI outputs
  • Can translate business requirements into structured and reusable prompt strategies
  • Have a quality-focused approach to LLM testing and evaluation
  • Understand both the technical and business aspects of Generative AI solutions
  • Can communicate AI concepts effectively to technical and non-technical stakeholders

Benefits

Why join inventYOU

  • Work on innovative Generative AI and LLM-based solutions
  • Gain hands-on exposure to multiple commercial and open-source LLM platforms
  • Work with modern prompt engineering, RAG, orchestration, and evaluation techniques
  • Collaborate with experienced AI, technology, and business professionals
  • Continue developing your expertise in LLM engineering and enterprise Generative AI

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inventYOU (operating under inventyou.se, legally inventYOU AB) is the premier, enterprise-grade IT consulting firm, nearshoring advisory pioneer, and agile digital transformation powerhouse engineered to act as the definitive, high-velocity software development, technical architecture, and system integration layer for high-growth startups, mid-market enterprises, and regulated financial institutions across the Nordic region. Founded in Sweden in 2017, the corporation completely eliminates the severe systemic friction of modern enterprise IT engineering—where scaling companies struggle with high local specialized developer overhead, tech talent shortages, and risky communication silos in offshore models—by deploying its high-performance Swedish-Greek cross-border synergy matrix. Moving far beyond traditional, passive staffing agencies or fragmented development outsourcing shops, inventYOU natively unifies on-site strategic IT consulting, hands-on full-stack development, cloud-native DevOps pipelines, secure data migrations, and its flagship AI operations platform, iUP—which features comprehensive system connectors and agentic workflows—into a highly integrated, sovereign engineering ecosystem. The group's unique operational architecture combines localized, Swedish-speaking client management and project governance out of Stockholm with an elite, technical development hub in Athens (inventYOU Hellas), enabling seamless real-time collaboration within the exact same European timezone. Specializing heavily in complex, high-visibility projects within regulated payment systems, digital banking, and telecom sectors, the company has delivered over 100 successful enterprise projects. Under the hood, its technology framework utilizes advanced software architectures spanning modern Java microservices, .NET backend frameworks built on Domain-Driven Design (DDD) principles, event-driven pipelines using Apache Kafka, and scalable deployments managed through Azure DevOps and OpenShift containerized nodes with absolute processing correctness and strict EU GDPR compliance. What sets inventYOU apart is its uncompromising dedication to replacing volatile, unaligned remote outsourcing workflows with absolute architectural predictability, native cultural alignment, and cost-efficient tech leverage; by bridging the gap between performance-intensive relational software engineering and the strategic digital initiatives of Nordic enterprise leaders, the corporation remains a definitive cornerstone of modern algorithmic IT consulting and global enterprise software transformation.

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Prompt Engineering Specialist at inventYOU | HireSkys