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Open nowPosted 113 days ago

Lead AI Engineer (LLMs & Agents)

Elixirr Digital15 open roles

Where
Rijeka or Zagreb
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Your applicationOpen nowLead AI Engineer (LLMs & Agents)Elixirr Digital · Rijeka or Zagreb

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The clock on this job

Early applications get read.

11.5% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
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  2. 4.4%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: posted 113 days ago

The posting

Are you passionate about leveraging AI to transform global industries? Do you have a proven track record of working with LLMs and building agentic solutions?

Join Elixirr Digital as a Lead 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 a Lead 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 multi-agent orchestration, tool design, durable execution, and memory-augmented workflows that transform enterprise processes.
  • Lead and Collaborate: Lead teams, mentor junior engineers, and collaborate with cross-functional experts 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 robust observability through tracing and evaluation frameworks.
  • End-to-End Lifecycle: Own and contribute to the entire AI development lifecycle, from research and prototyping to deployment, monitoring, and continuous improvement through production feedback loops.
  • 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 Deep Experience with LLMs and Agents: Hands-on experience building and deploying production agentic systems, including multi-agent architectures, tool/function calling design, and agent memory models. Familiarity with orchestration frameworks such as LangChain, Google ADK, or AutoGen, and working knowledge of open standards like the Model Context Protocol (MCP).
  • Bring Technical Expertise: Solid background in programming and past experience in machine learning, with a deep understanding of at least one area such as deep learning, reinforcement learning, fine-tuning, or model development.
  • Exercise Strong Model Judgment: Ability to evaluate and select across frontier and open-source models from providers including Anthropic, OpenAI, Google, and Meta, and articulate the tradeoffs between hosted inference, self-hosted deployment, fine-tuning, RAG, and agentic routing for a given use case.
  • Think Strategically: Ability to design and lead AI solutions while also contributing directly to development. Excellent problem-solving, analytical, and critical thinking skills, with a proficiency in applying mathematical principles to analyze, model, and solve complex problems.
  • Own Quality and Observability: Experience designing LLM evaluation frameworks, implementing tracing and observability tooling (e.g. Langfuse, LangSmith), and building feedback loops that drive continuous improvement from production data.
  • 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 (e.g. Claude Code, Cursor, GitHub Copilot) as part of your own workflow, with the judgment to govern and review AI-generated code responsibly.
  • Are Innovation-Driven: Stay ahead of AI trends, continuously innovate by building and refining tools for internal and client use, and actively apply cutting-edge research to improve processes and develop scalable, impactful solutions.

Bonus points if you have:

  • Proven track record of leading AI projects from concept to deployment.
  • Strong understanding of the AI development lifecycle, with deep expertise in at least one part of the process.
  • Examples of deployed AI systems demonstrating agentic capabilities.
  • Experience with secure AI development practices, including prompt injection awareness, RBAC for agent systems, and AI governance within enterprise environments.

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!

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