LLM Engineer

About the Position

LLM Engineer

Romania | Full-time | Hybrid or Remote

We can help you build an exceptional career

By joining Code4Nord, you’ll enjoy a dynamic work environment with exciting projects, tailored career growth opportunities, flexible work arrangements, modern and comfortable office spaces, and comprehensive wellness programs to support your well-being.

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Responsibilities

You are part of the Technical Intelligence team. The team’s main function is to recon the blockchain industry and feed the company with new trends and projects. The TechInt team has automated the recon process by utilizing a data lake and machine learning (ML).

You will increase the capabilities of our automated system by exploiting artificial intelligence (AI) and notably large language models (LLMs). You integrate AI and LLMs into our reconnaissance pipeline.

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Requirements

Who you are:

• Research and develop predictive intelligence models using AI and LLM to identify early signals of blockchain technological shifts. Your work will translate quantitative signals from open-source developer activity, and protocols popularity and adoption into actionable technical intelligence.
• Combine LLMs for knowledge discovery and symbolic AI for reasoning, to identify limitations and vulnerabilities in competing projects’ design by analyzing them against state-of-the-art references.
• Develop and apply AI models to analyze competitors’ source code, focusing on technical architecture and engineering quality.
• Develop text classification models to categorize blockchain projects.
• Drive customizations of LLMs with RAG from several data sources, including knowledge graph databases and search API, and iteratively experimenting, optimizing, and evaluating LLM metrics.
• Collaborate with leadership, data engineers, and domain experts to define requirements and align with department strategy and roadmap.
• Deploy, monitor, and continuously optimize AI models in production environments

Key Competencies

• Solid critical thinking, research, and problem-solving skills, with the ability to quickly grasp any technical field within the rapidly changing AI landscape.
• Solid programming skills covering algorithms, data structures, design patterns, asynchronous programming, and relational databases.
• Solid software development practices covering version control, testing, and continuous integration.
• Solid foundation in Machine Learning (ML), Natural Language Processing (NLP), and Deep Learning (DL).
• Knowledge of the Blockchain domain and passionate about gaining further breadth and depth of the domain.

Education/Experience

• PhD/MSc in Computer Science, AI, or a related field is a strong plus.
• 3+ years of work experience in engineering ML or AI solutions.
• Experience with cloud platforms, preferably AWS.
• Experience with Python’s data and NLP stack, for example Pandas, Polars, Spark, PyTorch, spaCy and Hugging Face Transformers.
• Experience building RAG and retrieval pipelines with tools such as LangChain or LlamaIndex, vector databases (e.g. pgvector, Qdrant, Pinecone) and graph databases (e.g. Neo4j).
• Experience building AI agent systems and multi-agent workflows, for example with LangGraph, CrewAI or the Claude Agent SDK, including tool use and the Model Context Protocol (MCP).
• Experience with LLM evaluation and observability (e.g. Ragas, Langfuse or LangSmith), prompt and context engineering, and working with both commercial LLM APIs and open-weight models.

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We Offer

• Dynamic work environment with exciting projects
• Tailored career growth opportunities
• Flexible work arrangements
• Modern and comfortable office spaces
• Comprehensive wellness programs

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About the Company

We engage with every phase of the software development lifecycle. Throughout the past decade, we have fine-tuned our end-to-end development process to encompass the entire product lifecycle.

4.9 Client rating on Clutch

27001****9001

7+ years Average Client Relationship

12 years Of Expertise

Let’s find your ideal solution

All great partnerships start with a conversation.

Contact us and let’s start one

Contacts:

• George Toman
• Jan de Blanck, Partner
• Reino Malm, Country Director Finland
• Chase Anderson, Country Director USA
• Thor Bjorn Preisler, Country Director UK / Ireland
• Frederik Rasmussen, Country Director Denmark / Sweden and Iceland

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