Mid-Level Python Developer (GenAI)

Location: Sofia, Bulgaria

Company

Sopra Steria Bulgaria is part of Sopra Steria Group, a European technology consulting company delivering software engineering, digital transformation, and business consulting services to customers across Germany and the DACH region.

What you will do

• Build stateful agentic workflows, prompt templates, and tool-calling flows using frameworks such as LangGraph.
• Connect LLMs and AI agents to internal and external APIs, databases, and third-party tools.
• Develop and optimize RAG pipelines using vector databases and structured outputs.
• Implement rate limiting, content moderation, and basic guardrails for user-facing AI features.
• Apply prompt evaluation, tracing, and monitoring practices to improve AI component reliability.
• Collaborate with backend engineers and QA to integrate GenAI features into production product architectures.

Requirements

• Hands-on experience with agentic or LLM-driven workflows using LangGraph, LangChain, or LlamaIndex.
• Experience integrating LLM APIs and provider platforms such as OpenAI, Anthropic, or Google Vertex AI.
• Working knowledge of vector databases and retrieval patterns, including Pinecone, Weaviate, or pgvector.
• Strong async Python skills and experience building REST APIs with FastAPI.
• Familiarity with AI guardrails, evaluation techniques, and observability tools such as Langfuse or MLflow.
• Professional English fluency is required, with the ability to collaborate in an agile environment.

Nice to have

• Experience with AI coding tools such as GitHub Copilot or Cursor.
• Familiarity with MCP, A2A, or similar tool-calling standards.
• Experience with Docker, Kubernetes, and CI/CD pipelines.
• Knowledge of modern Python tooling such as uv, Poetry, or Ruff.
• German language skills at B2 or higher.

Culture & Benefits

• International projects and collaboration with distributed engineering squads.
• Continuous professional and personal development opportunities.
• Supportive work environment with accessible leadership and open communication.
• 26 days of annual paid leave, health, life, and travel insurance.
• Food vouchers, Multisport cards, professional training programmes, and modern office facilities near Metro Station G.M. Dimitrov.

Hiring process

• Applications are reviewed, with potential matches contacted within the following week.
• The process may include a job-related case study or practical assessment using standardized role-specific criteria.