Python Developer with AI (MID)

🔸Important Note!🔸
🔔 This is hybrid role in Warsaw (1 day per week in the office - possible extension of hybrid type of work 50/50)
🔔 Project duration - over a year

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!

About the Client

Our client is a leading international bank investing in modern AI-driven solutions to automate business processes and enhance digital capabilities. You will join a team responsible for building AI applications, intelligent assistants, and LLM-based solutions used across the organization.

What you will do

• Design and develop AI-powered applications and services using Python to automate business processes
• Build intelligent assistants and bots based on Large Language Models (LLMs), including RAG solutions and AI agents
• Implement agentic workflows, including agent roles, tool calling, and execution flow management
• Work with internal AI frameworks and contribute to the development of new reusable AI components
• Collaborate with business teams to analyze requirements, troubleshoot issues, and propose improvements
• Ensure high quality, scalability, and maintainability of delivered AI solutions

What we are looking for

• Strong experience in Python development and building production-ready applications
• Practical experience with LangChain and LangGraph
• Hands-on experience with LLM-based solutions, including RAG, embeddings, vector search, AI agents, and tool calling
• Minimum 1 year of practical experience delivering applications using LLMs or AI-based solutions
• Experience working with Git and good understanding of version control practices
• Experience with development tools such as Jira, Confluence, and Bitbucket
• Good English communication skills (minimum B2)

Nice to have

• Experience with Azure AI Stack (Azure OpenAI, Azure AI Search, AI Foundry)
• Knowledge of React, Streamlit, Databricks, Cosmos DB, Redis, or Grafana
• Understanding of machine learning fundamentals
• Experience with LLM fine-tuning
• Ability to design system architecture and create High Level Design documentation

Soft skills

• Ability to work independently and propose technical solutions based on business needs
• Proactive approach and ownership mindset
• Strong communication skills with developers, analysts, architects, and business stakeholders
• Pragmatic approach focused on delivering valuable solutions

Perks and benefits

• Comprehensive benefits – enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers
• Flexibility – adaptable working hours and remote/hybrid work options to suit your lifestyle & location
• Career growth – access to professional development opportunities and partnerships with Microsoft, AWS, Snowflake, Salesforce & more
• Global collaboration – work with a diverse, international team
• Innovative environment – be part of a forward-thinking and growth-oriented workplace
• Engaging community – participate in team-building events, hackathons, and CSR initiatives
• A pleasant surprise to start your journey with us in the form of a welcome pack

Recruitment process

• HR call
• Interview with the dedicated client
• Final decision / feedback

👉 Sounds interesting? Click “Apply” and let’s talk!