Senior Python Developer

About the Position

We're seeking a Senior Python Developer with 5+ years of experience to join our team in Europe. You'll be building low-latency APIs with Azure cloud expertise.

Responsibilities

• Design and build async FastAPI services with structured logging and low-latency endpoints
• Develop RESTful APIs across multiple microservices (architecture varies by project: 1-6 services)
• Implement WebSocket connections for real-time updates and event-driven patterns
• Optimize database operations with connection pooling (200-pool configurations) and JSONB-aware queries
• Build background task processing systems with retries and idempotency for heavy operations

Infrastructure & Deployment

• Containerize services with Docker and deploy via Helm charts to Azure Kubernetes Service
• Manage environment-driven configuration and execute startup database migrations
• Implement background job scheduling with task schedulers, status tracking, and retry logic
• Optimize caching strategies with Redis for maximum performance
• Configure CORS policies, middleware, and request/response logging

AI/LLM Integration (Nice-to-Have)

• Integrate LangChain and OpenAI APIs for semantic tasks and domain-specific pipelines (valuation, analytics)
• Build document processing systems handling PDF, Excel, and DOCX parsing at scale
• Work with vector databases and Azure AI Search for retrieval-augmented generation (RAG)
• Decouple heavy LLM/document processing from request threads to maintain low P95 latency
• Collaborate with Data Science on prompt engineering, output parsers, and evaluation metrics

Data Architecture

• Design PostgreSQL schemas with proper indexing, foreign keys, and multi-tenant data isolation
• Integrate Azure Blob Storage for document workflows and large file handling
• Implement complex business logic with transactional guarantees and ACID compliance
• Use Cosmos DB connector for specialized NoSQL workloads when appropriate
• Manage database connection lifecycle, pooling, and transaction management

Collaboration & Soft Skills

• Constant collaboration with Data Science teams: Productionize and iterate on LLM pipelines, prompt libraries, and model evaluation
• Close partnership with Frontend engineers: Define API contracts, implement JWT-secured access, orchestrate async jobs via task IDs and polling patterns
• Clear communication on technical decisions, trade-offs, and architectural choices
• Pragmatic problem-solving approach across multiple projects with varying requirements
• Ability to iterate quickly based on feedback from cross-functional teams
• Leverage AI coding assistants to accelerate development while maintaining code quality

Core Requirements

• 3-5+ years of backend development experience
• 2-3+ years of production Python/FastAPI experience
• Azure cloud services experience (REQUIRED): Blob Storage, Azure Kubernetes Service (AKS), AI Search
• Strong async programming patterns and PostgreSQL expertise
• Docker containerization and microservices architecture experience
• Fluency with AI coding assistants (REQUIRED): GitHub Copilot, Cursor, or similar tools for accelerated development

Nice-to-Have Skills

• Hands-on Kubernetes/Helm operations experience beyond deployment
• Prior experience with LangChain, LLM integration, or AI/ML pipeline productionization
• Multi-tenant SaaS architecture patterns and data isolation strategies
• Cosmos DB or other NoSQL database experience
• Experience with task schedulers, job queues (Celery, RQ), or workflow orchestration
• Performance profiling and optimization tools (py-spy, cProfile, pgBadger)

We Offer

• Competitive salary
• Remote work options
• Professional development budget

About the Company

We are a forward-thinking team based in Europe, dedicated to leveraging cutting-edge technologies to solve complex problems. Our focus on innovation and collaboration drives us to deliver high-quality solutions that make a real impact.

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Our team will review your application within the next 5 days.

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