LLM Engineer (RAG + Fine-tuning)

Applefy - Premium Web & Mobile Development Company.

We specialize in building high-quality Mobile and web products, 
ensuring excellence in every project. 
Based in Ukraine and the EU, we can effectively collaborate with clients from Europe, the US, and Asia.

We are looking for an experienced LLM Engineer to lead the development of a scalable MVP using cutting-edge Retrieval-Augmented Generation (RAG) and fine-tuning techniques. This role is ideal for someone who thrives in startup environments and can take ownership of end-to-end LLM pipeline development.

What We Offer:

• Flexible work schedule: Manage your own time and work at your own pace.
• Fully remote: Work from anywhere in the world.
• Comprehensive leave policy: Enjoy all official holidays, 20 days of paid vacation, and 10 sick days without needing a doctor’s note.

Key Requirements:
 

  • Proficiency in spoken English
  • Strong communication skills
  • Design and implement RAG pipelines combining vector search and LLMs.
  • Fine-tune open-source or proprietary LLMs for domain-specific tasks.
  • Build a scalable and modular MVP ready for future production deployment.
  • Integrate with embedding databases (e.g., FAISS, Weaviate, Pinecone).
  • Optimize inference and memory usage for cost-effective scaling.
  • Collaborate with product and engineering teams on system architecture.
  • Ukrainian speaker 
  • Keen attention to detail
  • Solid understanding of UI/UX principles



Preferred Qualifications:

• A desire to learn and grow professionally
• At least two years of experience in product development
• experience with Compose
• Residency in Ukraine 🇺🇦

Write "Apple" in the proposal.
If you’re ready to take the next step in your career with Applefy.

We’d love to hear from you!
 

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