Middle+ Software Developer with AI

We are looking for an AI Engineer to join a product engineering team focused on introducing LLM-based capabilities into enterprise software and building systems such as MCP servers and agents. The role involves working on AI-driven product features, backend services, and integrations that connect models with tools and data in a scalable production environment.

Location: Serbia (relocation support available), Croatia, Poland, Portugal

Tasks

Design and develop AI-powered product features with a focus on LLM-based capabilities;

Build and maintain MCP servers and agent-based components;

Develop enterprise-grade web services and backend integrations;

Work with tools, data sources, and model interfaces across cloud environments;

Collaborate with engineering teams to deliver production-ready AI solutions.

Requirements

CORE

AI Engineer profile with strong SDE background;

Proficiency in C# or Python;

Knowledge of Model Context Protocol (MCP) for connecting tools and data into models;

Experience in developing enterprise-grade web services;

Experience working with cloud platforms such as Azure, AWS, or GCP.

Nice to have

Hands-on experience with LLM and RAG engineering, including retrieval design, chunking, vector stores, and structured outputs, using tools such as OpenAI, LangChain, or LlamaIndex;

Experience in building and orchestrating agentic systems that call tools and reason over retrieved context, using frameworks such as LangGraph or AutoGen, and OpenAI tool calling or the Responses API;

Familiarity with LLM evaluation and observability tools such as LangSmith or Langfuse;

Experience with guardrails and security measures such as prompt injection defense and output validation.

Engagement Type

B2B contract.

Location / Timezone

Remote work from Croatia, Poland, Portugal, and Serbia.

European working hours.

Occasionally available for meetings up to 10:00 AM PST (US overlap).

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