Senior AI/ML Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior AI/ML Engineer based in Estonia.

• Lead the architecture, design, development, and implementation of an enterprise-grade Agentic AI orchestration platform.
• Design modular, reusable AI components and intelligent agents using a “Bricks” / multi-node architecture.
• Develop production-grade LLM applications leveraging Claude APIs, LangGraph, LangChain, advanced prompt engineering, RAG, vector databases, MCP, and multi-agent workflows.
• Define and implement agentic AI architectures that are scalable, maintainable, secure, and suitable for enterprise environments.
• Build scalable APIs and backend services using Python and FastAPI, ensuring reliability and production readiness.
• Design retrieval-augmented generation solutions and integrate vector databases to support accurate and context-aware AI applications.
• Develop sophisticated prompt-engineering strategies to improve model performance, reliability, and consistency.
• Establish AI security and responsible AI practices, particularly when working with enterprise or regulated data.
• Provide technical leadership across architecture and engineering decisions, establishing best practices and guiding implementation.
• Evaluate technical trade-offs involving scalability, performance, security, maintainability, and AI model capabilities.
• Collaborate with technical and business stakeholders to translate complex requirements into robust AI solutions.
• Troubleshoot complex technical challenges and continuously improve the platform’s reliability, performance, and capabilities.

• 10+ years of overall experience in software engineering and/or AI/ML, with senior-level architecture and engineering responsibilities.
• Strong professional experience building and operating LLM-based applications in production.
• Advanced Python development skills and experience building production-quality backend systems.
• Hands-on experience working with the Claude API, including integration into real-world AI applications.
• Strong experience with LangGraph and/or LangChain, including orchestration of complex AI workflows.
• Proven experience designing and implementing Agentic AI architectures and multi-agent systems.
• Strong knowledge of Retrieval-Augmented Generation (RAG) and practical experience with vector databases.
• Advanced prompt-engineering capabilities, with an understanding of techniques for improving LLM accuracy, reliability, and behavior.
• Experience designing and developing scalable APIs using FastAPI.
• Strong understanding of AI security, responsible AI, privacy, and enterprise AI governance.
• Experience working with enterprise-scale or regulated data environments where security, compliance, and reliability are critical.
• Strong software architecture skills and the ability to make sound technical decisions in complex environments.
• Proven technical leadership capabilities, including influencing architecture, guiding engineering practices, and mentoring technical teams.
• Excellent communication, collaboration, analytical thinking, and complex problem-solving skills.
• Ability to work independently in a remote environment while maintaining strong ownership and delivery focus.

• Fully remote work model.
• Contract engagement.
• Opportunity to work on an enterprise-grade Agentic AI platform using advanced generative AI technologies.
• Hands-on exposure to Claude, LangGraph, LangChain, RAG, vector databases, MCP, multi-agent systems, and modern AI architectures.
• Opportunity to influence architectural decisions and shape reusable AI components and intelligent-agent capabilities.
• Senior-level technical ownership with significant impact on the design and evolution of the platform.
• Experience working with enterprise and potentially regulated data environments.
• International, technology-focused environment with opportunities to solve complex AI/ML engineering challenges.