python developer for LLM applications

Elinext is an international software development company with over 25 years of experience delivering custom software solutions and dedicated engineering teams to clients worldwide. It works across gaming, fintech, healthcare, enterprise software, AI/ML, cloud, and other technology-driven domains.

• Design, develop, and maintain scalable backend services using modern Python, asynchronous programming, and clean architectural principles
• Build and maintain RESTful APIs, data schemas, and integrations with external services, knowledge sources, and AI components
• Develop and enhance LLM-powered backend functionality, including agent orchestration, tool calling, and integrations with external tools
• Implement and improve LLM response evaluation mechanisms to ensure quality, reliability, and consistency
• Apply software engineering best practices to build secure, maintainable, production-ready backend solutions
• Write clean, well-structured, typed, and testable Python code
• Ensure software quality through automated testing, code reviews, and CI/CD workflows
• Collaborate with backend engineers, AI specialists, and product teams to design and deliver new features
• Continuously improve the performance, reliability, and maintainability of production services

• Strong professional experience in Python backend development, including building and maintaining production-grade web services
• Advanced hands-on experience with Python 3.x, asynchronous programming, type hints, and backend API development
• Proven experience delivering LLM/Generative AI functionality in production, beyond prototypes or proof-of-concepts
• Practical experience with LangChain, LangGraph, or similar LLM orchestration frameworks
• Experience with prompt engineering, tool integrations, and agent-based workflows
• Strong understanding of LLM evaluation and quality assurance, including evaluation datasets, testing methodologies, observability, and production feedback mechanisms
• Solid experience with modern Python API frameworks, particularly FastAPI
• Strong knowledge of Pydantic for data validation and schema management
• Good understanding of clean architecture, structured software design, and maintainable backend systems
• Experience with automated testing, code reviews, Git-based development workflows, and CI/CD pipelines
• Strong analytical thinking, problem-solving skills, and attention to code quality
• Professional working proficiency in English
• Ability to collaborate effectively with cross-functional engineering and product teams

• B2B/contract employment
• 25 Calendar days of paid vacation and 5 paid sick days
• Medical insurance
• Corporate English language courses
• Corporate events and team-building activities
• Professional development and certification support
• Reimbursement for professional courses and training
• Long-term international projects
• Opportunities for career growth and professional development