Senior Python Developer (AI)

Product team building LLM-based solutions, agentic AI systems, and AI infrastructure. Remote or office in Limassol. Seeking a strong backend developer with modern stack.

Develop LLM-based architecture and AI services. Develop AI agents using ReAct, planning, routing, handoff, tool use, and memory. Build Agent Harness: implement tool loop, middleware, guardrails, and state management. Integrate RAG, vector DB, MCP, and external APIs. Manage context window, cost, and latency of AI systems. Develop REST API and asynchronous services using FastAPI and asyncio. Orchestrate AI workflows with Temporal, set up observability via Langfuse or similar, and evaluate quality of LLM workflows and AI agents.

At least 5 years of commercial Python development. At least 1.5 years of commercial experience developing agentic AI systems. Experience with LangGraph and LangChain, as well as ReAct, planning, routing, handoff, memory, and tool use patterns. Experience with Agent Runtime or Agent Harness, MCP, RAG, Prompt Engineering, and Guardrails. Experience with Langfuse or analogous tools, Temporal or similar workflow engines, FastAPI, asyncio, PostgreSQL, Redis, RabbitMQ, and Docker. Experience using mypy, pytest, and one of Cursor, Claude Code, or Codex. Must reside outside Russia and Belarus. Nice to have: Kubernetes, Kafka, PHP, Spec-driven Development, PyTorch or HuggingFace, experience with CV/Audio/Video AI, Kaggle participation.

Fully remote or office in Limassol. Work visa and insurance provided for office work in Limassol (no relocation). Schedule: 09:00–18:00 Cyprus time. 24 working days of vacation. English and Greek courses. Performance review every 6 months.