Job Description

Sofia Stars is a fast-growing global service provider that guides high-growth businesses to success. Our range of tailored solutions includes R&D, Customer Support, Sales, KYC, Risk, and Anti-Fraud services. We make every connection shine with fresh tech and cultural understanding.

Architect and deploy the next generation of conversational intelligence You will build autonomous agents that live across voice, web chat, and messaging, ensuring they are fast, reliable, and deeply integrated into our business systems.

Duties and Responsibilities:

• Agentic Architecture Design multi-modal agent systems that leverage LLMs for reasoning, planning, and execution;
• Conversational Engineering Build and optimize high-fidelity Voice (VUI) and Chat (CUI) interfaces, focusing on latency reduction and natural turn-taking;
• Workflow & Logic Develop the "connective tissue" between AI agents and external APIs, databases, and CRMs to automate end-to-end business processes;
• RAG & Memory Implement advanced Retrieval-Augmented Generation (RAG) and long-term memory systems to provide agents with accurate, contextual data.

Role Requirements:

• Core Skills Proficiency in Python or Node.js and experience with LLM frameworks (LangChain, LangGraph, or similar);
• Automation Mastery Extensive experience with workflow orchestration (e.g., n8n, LangFlow, or Make);
• Voice & Chat Expertise Familiarity with real-time voice protocols (WebSockets, WebRTC) and chat-interface deployment;
• Preferred Stack Experience with Retell AI (Voice) and n8n is a significant plus but not a dealbreaker.Previous experience working in the iGaming industry.

Our Excellent Benefits:

• Monthly, quarterly, and annual bonuses
• Food vouchers (102 EUR)
• Appreciation gifts (birthday, wedding, newborn, etc.)
• Up to 25 vacation days
• 6 undocumented sick leaves
• Medical insurance and dental coverage
• Sport card 70% coverage (Multisport and/or CoolFit)
• Office massages
• Breakfast, lunch & snacks in the office
• Education budget
• Monthly team events
• Great office location

Important information:

• This is an office-based position in Sofia, Bulgaria

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