Prompt Engineer

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Prompt Engineer with a contract length of "X months" and a pay rate of "$Y/hour." Candidates must have 2+ LLM projects, strong Python skills, and experience with prompt design, fine-tuning, and evaluation metrics. Remote work is available.
🌎 - Country
United Kingdom
πŸ’± - Currency
Β£ GBP
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πŸ’° - Day rate
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πŸ—“οΈ - Date discovered
September 30, 2025
πŸ•’ - Project duration
Unknown
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🏝️ - Location type
Unknown
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πŸ“„ - Contract type
Unknown
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πŸ”’ - Security clearance
Unknown
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πŸ“ - Location detailed
Greater London, England, United Kingdom
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🧠 - Skills detailed
#Langchain #Security #Python #Compliance #Pandas #Databases #Deployment #NLP (Natural Language Processing) #Scala #API (Application Programming Interface) #Data Manipulation
Role description
Role Overview: We are seeking highly skilled Prompt Engineers with strong expertise in Large Language Models (LLMs), prompt design, and advanced NLP solutions. The ideal candidate will have hands-on experience delivering LLM production projects, including prompt optimization, fine-tuning, retrieval-augmented generation (RAG), and secure deployment of LLM-based workflows in enterprise environments. Key Responsibilities: β€’ Design, test, and deploy prompts for real-world LLM applications ensuring consistency, relevance, and accuracy. β€’ Develop prompt engineering pipelines integrating Python, LLM APIs, and data manipulation tools (e.g., Pandas). β€’ Implement fine-tuning or RAG pipelines to optimize performance for enterprise use cases. β€’ Define evaluation strategies using BLEU, ROUGE, semantic similarity, and human-in-the-loop validation frameworks. β€’ Ensure compliance with security best practices (prompt injection prevention, safe output structuring, API limitations). β€’ Collaborate with business and technical stakeholders to translate complex requirements into actionable LLM solutions. β€’ Analyze outputs for consistency, scalability, and high-level architectural alignment. β€’ (Good to Have) Work with vector databases and integrate with tools such as LangChain, LlamaIndex, OCR/NLP pipelines. Mandatory Skills: β€’ Prompt Engineering Experience: Proven track record of 2+ production-grade LLM projects. β€’ Prompt Design Expertise: Deep understanding of prompt structures and contextual framing. β€’ Python Proficiency: Strong Python development background with LLM API integration. β€’ Advanced LLM Techniques: At least one fine-tuning or RAG pipeline implementation. β€’ Evaluation & Validation: Familiarity with evaluation metrics (BLEU, ROUGE, semantic similarity). β€’ Security Awareness: Knowledge of prompt injection, output filtering, API limitations. β€’ Communication Skills: Strong ability to communicate technical and functional requirements. β€’ Analytical Thinking: Balance of strategic design and output-level accuracy.