Rijeka or Zagreb, Croatia
AI Engineer (LLMs & Agents)
We’re growing fast, and we move fast. Let’s help clients change the game in their industries while we change the game in our own.
Are you passionate about leveraging AI to transform global industries? Do you have experience working with LLMs and building agentic solutions?
Join Elixirr Digital as an AI Engineer, where you will drive innovation and help shape the future of intelligent systems for clients across industries like banking, insurance, healthcare, telecommunications, consumer goods, and more. We're looking for proactive self-starters who are constantly reading research, applying it, and using AI to improve their processes, fully embracing the technology.
At Elixirr Digital, we've been on the cutting edge of generative AI from the beginning, developing our own platforms and deploying transformative solutions to global clients for several years. Our expertise spans working with frontier and open-source models across providers including Anthropic, OpenAI, Google, and Meta, and leading frameworks like LangChain, Google ADK, and AutoGen to build innovative, agentic solutions built on open standards like the Model Context Protocol (MCP). From underwriting agents that empower financial professionals to knowledge agents streamlining customer workflows, our solutions are revolutionizing industries by embedding AI at their core.
If you're excited to work at the forefront of generative AI, helping enterprises transform from the inside out, we want to hear from you. Let's build the future of AI together!
What will you be doing as an AI Engineer at Elixirr Digital?
- Design and Implement Solutions: Architect, design, and develop advanced AI systems with a focus on LLMs and agentic solutions, including tool integration, retrieval-augmented generation, and memory-augmented workflows that transform enterprise processes.
- Collaborate: Work closely with cross-functional experts, senior engineers, and clients to deliver AI-driven innovations.
- Drive Innovation: Work on a mix of internal R&D projects and enterprise-level solutions, building and optimizing tools for both internal and client use.
- Deploy at Scale: Develop and maintain production-ready AI solutions, ensuring scalability, performance, reliability, and observability through tracing and evaluation tooling.
- End-to-End Lifecycle: Contribute to the entire AI development lifecycle, from research and prototyping to deployment, monitoring, and continuous improvement.
- Deliver Tangible Outcomes: Help global enterprises achieve measurable impact through solutions like underwriting agents, airport assistants, pharmacy workflow optimizers, and customer due diligence systems.
Competencies and skillset we expect you to have to successfully perform your job:
- Have Experience with LLMs and Agents: Hands-on experience building agentic solutions using frameworks such as LangChain, Google ADK, or AutoGen, and growing familiarity with open standards like the Model Context Protocol (MCP). Experience integrating tools, managing context, and working with retrieval pipelines.
- Bring Technical Expertise: Solid background in programming and foundational experience in machine learning, with working knowledge in at least one area such as deep learning, fine-tuning, or RAG-based architectures.
- Think Analytically: Strong problem-solving and critical thinking skills, with the ability to translate complex requirements into well-structured AI solutions. Comfortable applying mathematical principles to model and solve real-world problems.
- Focus on Outcomes: Passion for transforming businesses and delivering measurable results through AI.
- Collaborate Effectively: Experience working in cross-functional teams, balancing R&D and production-level work.
- Embrace AI-Native Development: Comfortable using AI-assisted coding tools such as Claude Code, Cursor, or GitHub Copilot as part of your daily workflow, with good judgment about when to trust and when to verify AI-generated output.
- Care About Quality: Familiarity with testing and evaluating LLM outputs, using logging or tracing tools to debug and improve system behaviour in production.
- Are Innovation-Driven: Stay ahead of AI trends, continuously learn and experiment, and actively apply cutting-edge research to improve processes and develop scalable, impactful solutions.
Bonus points if you have:
- Examples of deployed AI systems demonstrating agentic capabilities, whether from professional work, personal projects, or open-source contributions.
- Strong understanding of the AI development lifecycle, with depth in at least one part of the process.
- Experience with retrieval-augmented generation (RAG), vector databases, or semantic search in a production or project context.
- A GitHub profile or portfolio showing hands-on AI work.
We could be a perfect fit if you are:
- Passionate about technology. You anticipate, recognize, and resolve technical problems using a variety of specialized tools for application development and support.
- Independent. You are a self-motivated and ambitious individual, capable of managing multiple responsibilities effectively.
- Problem-solver. You think creatively and find solutions to complex challenges.
- Creative and outside-the-box thinker. You look beyond blog posts and whitepapers, competitions, and even state-of-the-art benchmarks to solve real-world problems.
- Communicator. Strong verbal and written communication skills are essential to ensure effective collaboration and timely delivery of results within the team.
- Proficient in English. We work across continents in a global environment, so fluent English, both written and spoken is a must.
Why join Elixirr Digital?
- Global Impact: Work with top-tier clients across industries, solving real-world challenges with transformative AI solutions.
- Cutting-Edge Innovation: Develop and deploy AI tools and platforms that redefine what’s possible in enterprise AI.
- Collaborative Culture: Join a team of innovators passionate about advancing AI while fostering a collaborative, inclusive environment.
- Diverse Projects: Tackle a wide range of AI applications—from NLP to reinforcement learning—for use cases as varied as field support for telecom workers and optimizing customer workflows in banks.
Why is Elixirr Digital the right next step for you?
From working with cutting-edge technologies to solving complex challenges for global clients, we make sure your work matters. And while you’re building great things, we’re here to support you.
Compensation & Equity:
- Individually tailored benefits package
- Performance bonus
- Employee Stock Options Grant
- Employee Share Purchase Plan (ESPP)
- Competitive compensation
Flexibility & Balance:
- Flexible working hours and remote work
- Multi-sport card
- Full medical checkup
Projects & Tools:
- Big clients and interesting projects
- Cutting-edge technologies
Learning & Growth:
- Learning and development budget
- Growth and development opportunities
People-Centered Perks:
- Referral bonus
- Anniversary bonus
We don’t just offer a job - we create space for you to grow, thrive, and be recognized.
Intrigued? Apply now!



