Python Engineer (AI / LLM / FastAPI)
Company Description
Mercatus Outsourcing is an international BPO & ITO service and solution provider based in Sofia. We specialize in providing multilingual customer and technical support, data entry, IT support, B2B lead generation, revenue growth, IT staffing, and software outsourcing services. As an end-to-end B2B sales & marketing agency, our aim is to connect leading brands with their potential customers worldwide.
We are currently partnering with a fast-growing digital platform in the mental health space, focused on connecting individuals with qualified professionals through cutting-edge technology. To support their expansion, we are looking for an experienced Python Engineer with strong expertise in AI-driven systems. Someone with experience in multi-agent applications, using FastAPI, Pydantic. Also, experience in the Langchain framework and Langfuse is a plus.
What You’ll Do
- Design, develop, and maintain scalable Python applications
- Build and orchestrate multi-agent AI systems to automate workflows
- Develop high-performance APIs using FastAPI
- Implement robust data validation and modeling using Pydantic
- Integrate LLM capabilities into production environments
- Collaborate closely with cross-functional engineering teams
- Ensure code quality through testing, documentation, and best practices
What You Bring
- Strong experience with Python and asynchronous programming
- Hands-on experience with LLMs and multi-agent architectures
- Solid knowledge of FastAPI and Pydantic
- Experience with prompt engineering and AI integrations
- Familiarity with LangChain, Langfuse (considered a strong advantage)
- Ability to write clean, maintainable, and scalable code
Nice to Have
- Experience deploying AI systems in production
- Knowledge of cloud environments (AWS, GCP, or Azure)
- Experience with containerization (Docker, Kubernetes)
What We Offer
- Opportunity to work on cutting-edge AI products
- Flexible working model (remote / hybrid)
- Competitive salary package
- Career growth in a fast-scaling tech environment
- Supportive and international team culture
Don’t meet all the requirements? That’s fine too, we are open to exceptional candidate profiles.
Sounds interesting? We are looking for people who want to tackle and grow with us. As a start-up, we are working together and in one direction. If you are interested in a great job in the consulting industry, we look forward to receiving your application.