Regular AI/ML Developer (f/m/x)

Sii Poland; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Great Place to Work

Medical care

Profit sharing

Centre of internal trainings

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Job summary

Sii Poland is seeking a skilled AI/ML Developer to join our team focussing on flagship AI and ML projects in Credit & Lending. You will design prompts for LLMs, build RAG-based solutions, and deploy scalable AI models in the cloud using Azure and GCP.

Collaborating with cross-functional teams, you will contribute to the full lifecycle from discovery to production, emphasizing fairness, transparency, and high-quality code. Fluency in English is required.

Qualifications

• Minimum 3 years of AI/ML development experience.
• Strong Python and FastAPI/LangChain skills.
• Experience with SQL databases including PostgreSQL and PL/SQL.
• API design and microservices architecture experience.
• Knowledge of LLM architectures, RAG, and prompt engineering.
• Familiarity with Kubernetes, CI/CD, and cloud platforms (Azure, GCP).
• Experience with TDD/BDD methodologies.
• Excellent English communication and presentation skills.

Responsibilities

• Design, test, and optimize prompts for LLMs for Credit & Lending use cases.
• Develop and implement RAG-based solutions leveraging vector databases.
• Participate in full lifecycle from discovery to production deployment.
• Apply AI best practices for fairness, transparency, and accountability.
• Collaborate with engineers, product managers, and business experts to align goals.
• Write and maintain high-quality, reusable code.
• Use Azure and GCP to develop, deploy, and scale AI models.
• Co-author solution designs and maintain production products.

Skills

AI/ML development

Python

FastAPI

LangChain

RAG

PostgreSQL

PL/SQL

API design

microservices

LLM architectures

prompt engineering

Kubernetes

CI/CD

Azure

GCP

TDD

BDD

English communication

Tools

LangChain

PostgreSQL

Kubernetes

Azure

GCP

FastAPI

Job description

We are looking for a skilled AI/ML Developer to join our dedicated team of engineers working on flagship AI and ML projects that are transforming the Credit and Lending landscape. In this role, you will collaborate closely with business stakeholders to deliver high-impact solutions in a fast-moving and innovative environment. If you are passionate about applying cutting-edge AI technologies to solve real-world financial challenges, we want to hear from you.

Your tasks

• Designing, testing, and optimizing prompts for Large Language Models (LLMs) to achieve high-quality outputs for Credit & Lending use cases
• Developing and implementing sophisticated solutions using Retrieval-Augmented Generation (RAG) and vector databases to unlock insights from complex financial data
• Participating in the full lifecycle of our solutions, from problem discovery and prototyping to design, implementation, and production deployment
• Applying AI best practices to ensure fairness, transparency, and accountability in all models and applications
• Collaborating with a cross-functional team of engineers, product managers, and business experts to align technical efforts with strategic goals
• Writing and maintaining high-quality, testable, and reusable code
• Utilizing cloud platforms (Azure, GCP) for the development, deployment, and scaling of AI models
• Co-authoring solution designs and architecture and maintaining products in production
  

Requirements

• Minimum 3 years of experience in AI/ML development
• Deep expertise in Python and its frameworks, including FastAPI and LangChain
• Strong knowledge of PL/SQL and SQL databases, including PostgreSQL
• Practical experience with API design and microservices architecture
• Understanding of LLM architectures and practical experience with RAG and prompt engineering
• Familiarity with Kubernetes, CI/CD practices, and cloud platforms like Azure and GCP
• Experience in TDD and BDD methodologies
• Strong communication and presentation skills in English, capable of explaining technical solutions to business stakeholders
• Advanced level of English

Nice to have

• Experience with Java and Spring framework
• Working from office in Cracow 6 times per month
  

Job no. JOB-JX4BL
Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care