Senior AI/ML Backend Engineer – Large Language Models & RAG

Our requirements

• 3+ years of experience in Python and Java development.
• Proficiency with frameworks like FastAPI, LangChain, and Spring.
• Strong knowledge of SQL (PostgreSQL), Vector Databases, and KV stores such as Redis.
• Experience with Microservices architecture, API design, Kubernetes, CI/CD tools (Jenkins, Azure DevOps, GCP Cloud Build).
• Practical expertise in TDD, BDD, and working with LLM architectures in domain-specific data.
• Knowledge of RAG, Prompt Engineering, and Agentic architectures.
• Background in machine learning, deep learning, NLP, and experimenting with LLMs for AI solutions.
• Fluent English communication skills, with the ability to present technical solutions clearly to business stakeholders.
• Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union will be considered for this role.

Optional

• Certifications or experience in cloud infrastructure, microservices, or advanced NLP techniques.

Your responsibilities

• Design, test, and optimize prompts for LLMs to ensure high-quality outputs for Credit & Lending use cases.
• Develop and implement solutions using RAG and vector databases to extract insights from complex financial data.
• Participate in the full lifecycle of AI solutions, from problem discovery and prototyping to deployment and scaling.
• Apply AI best practices to promote fairness, transparency, and accountability across models and applications.
• Collaborate with cross-functional teams to align technical efforts with strategic business goals.
• Write and maintain high-quality, reusable, and testable code utilizing cloud platforms (Azure, GCP).
• Co-author solutions architecture and maintain products in production environments.

About the project

This is how we organize our work

This is how we work on a project

• BDD
• TDD
• Continuous Deployment
• Continuous Integration
• test automation

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What we offer

• Stable and long-term cooperation with very good conditions
• Enhance your skills and develop your expertise in the financial industry
• Work on the most strategic projects available in the market
• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
• Participate in Social Events, training, and work in an international environment
• Access to attractive Medical Package
• Access to Multisport Program
• Access to Pluralsight
• Flexible hours

Benefits

• sharing the costs of sports activities
• private medical care
• flexible working time
• fruits
• integration events
• corporate gym
• saving & investment scheme
• no dress code
• coffee / tea
• drinks
• christmas gifts
• birthday celebration
• sharing the costs of a streaming platform subscription
• access to +100 projects
• access to Pluralsight

Recruitment stages

• 1.
  online interview
• 2.
  online interview

ITDS Polska Sp. z o.o.