AI Engineer

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!

We are looking for an AI Engineer who enjoys building end-to-end AI solutions-from backend services and APIs to intelligent workflows and user-facing experiences.

You’ll work on real production AI systems using modern LLM infrastructure, agentic workflows, RAG pipelines, and enterprise automation tooling. This is a hands-on engineering role focused on rapid delivery, production quality, and reusable AI components that scale across multiple use cases and clients.

• Lang Chain/Lang Graph
• FastAPI
• n8n
• Redis
• Deep Eval/RAGAS
• Terraform

• Build AI services and workflows in Python (FastAPI preferred)
• Develop and optimize RAG pipelines using pgvector and retrieval best practices
• Implement agentic workflows with Lang Chain/Lang Graph
• Integrate AI systems with external APIs, tools, and enterprise workflows
• Build lightweight AI user experiences (chat/task/internal tooling)
• Work with Microsoft Copilot and Copilot Studio solutions
• Add observability, tracing, and evaluation for production AI systems
• Contribute to CI/CD, deployments, testing, and reusable internal AI components

• 2-4+ years of experience as a Software Engineer, AI Engineer, or ML Engineer
• Strong Python engineering skills and API development experience
• Experience with RAG systems and vector search
• Hands-on experience with Lang Chain and/or Lang Graph
• Comfortable working with REST APIs and production systems
• Familiarity with observability/debugging tools (Langfuse or similar)

• Experience with Microsoft Copilot/Copilot Studio
• Basic frontend/UI skills (React, Chainlit, etc.)
• Experience with n8n or workflow automation tools
• Understanding of enterprise automation/RPA concepts

• Comprehensive benefits-enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
• Flexibility-adaptable working hours and remote/hybrid work options to suit your lifestyle & location.
• Career growth-access to professional development and learning opportunities, including perks from our official partnerships with global IT giants:
  Microsoft, AWS, Snowflake, Salesforce & more.
• Global collaboration-work with a diverse, international team.
• Innovative environment-be part of a forward-thinking and growth-oriented workplace.
• Engaging community-participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work.
• Team-building events, including our company tradition-an annual company event in Mazury.
• A welcome pack to start your journey with us on a positive note.

• HR call
• Interview with the dedicated Client