AI Engineer - LLMs and On-Premise AI - Aarhus

Permanent position at Twoday | Copenhagen

AI Engineer – LLMs and On-Premise AI

Do you have hands-on experience building reliable LLM solutions and deploying models in controlled environments? We are looking for an AI Engineer to join Twoday and work on an important digital solution for a Danish public-sector organisation in Aarhus.

Your role

You will work across the development and operation of LLM-based solutions, with a particular focus on models running on-premise. You will help turn AI concepts into secure, stable and production-ready services.

Your responsibilities will include

• Developing and integrating LLM-based applications and agents
• Deploying and operating LLM models in on-premise environments
• Building RAG solutions, structured workflows and validation layers
• Improving model reliability through guardrails, testing and monitoring
• Integrating AI services with existing applications and APIs
• Working with sensitive data and high requirements for security and traceability

What we are looking for

• Practical experience developing production-ready LLM solutions
• Strong Python skills and experience with relevant LLM frameworks
• Experience with RAG, prompt design, tool calling and structured outputs
• Knowledge of local or self-hosted models and inference infrastructure
• Experience with Docker, Linux, APIs and CI/CD
• A pragmatic approach to hallucination reduction, validation and monitoring
• Fluent Danish and English, both spoken and written
• Ability to work full time onsite in Aarhus

Experience with model fine-tuning, GPU infrastructure, NLP or regulated environments is an advantage.

What we offer

You will be permanently employed by Twoday and become part of a strong professional environment within AI and software engineering. Your first assignment will be based onsite with our customer in Aarhus, where you will work closely with both technical specialists and business stakeholders.

At Twoday, you will have the opportunity to develop your expertise, share knowledge with experienced colleagues and help create responsible AI solutions that make a real difference.

Working at Twoday

Twoday is a leading technology consulting company specializing in applied AI and advanced engineering. With around 2,300 experts in AI, data, digital engineering, and cloud engineering, we cut through complexity, remove uncertainty, and prove the value of technology.

Our purpose is to create a better tomorrow through AI and technology. We strengthen private and public organizations across energy and utilities, financial services and insurance, industrials and manufacturing, health and life sciences, and government.

However, our greatest strength isn't the technology we work with. It's the people behind it. Every day, they bring together expertise, curiosity, and determination to help our customers solve complex challenges and create lasting value.

Diversity and inclusion

We are committed to building an inclusive and diverse workplace where everyone is treated with respect and has equal opportunities. Our recruitment decisions are based on competencies, experience, and individual merit.

Don’t meet all the requirements? Many candidates hesitate to apply unless they meet every qualification. We are looking for people who are engaged, meet most of the criteria, and are motivated to grow in the role. If this role interests you and you believe you could be a good fit, we encourage you to apply.