Python Engineer / Full-Stack Developer

Domain: Banking & Finance
Experience: 6+ years
Project Duration: June 1, 2026 – December 31, 2026
Format: Hybrid
Location: Kraków, Poland

About the Project

We are looking for a Python Engineer / Full-Stack Developer to join a team developing modern digital solutions for the banking and finance domain.

The role combines backend development with Python and FastAPI, frontend development with React.js, and participation in AI-powered initiatives using modern GenAI frameworks and tools.

Responsibilities

• Develop scalable and maintainable web applications using Python and FastAPI
• Contribute across the full stack, including frontend development with React.js
• Design, optimize, and maintain SQL, NoSQL, and vector databases such as PostgreSQL, Redis, and PGVector
• Build and support cloud-based solutions using AWS services
• Use Docker and Kubernetes for containerization and orchestration
• Design and integrate RESTful APIs and backend services
• Implement CI/CD pipelines, automated testing, and deployment best practices
• Collaborate with cross-functional teams to deliver reliable and scalable software solutions
• Contribute to GenAI-powered applications using technologies such as LangChain and OpenAI APIs

Requirements

• Strong proficiency in Python and experience building backend services with FastAPI
• Experience developing frontend applications with React.js
• Solid understanding of RESTful API design and distributed systems
• Hands-on experience with LangChain, OpenAI APIs, or similar AI frameworks
• Experience working with relational, NoSQL, and vector databases
• Familiarity with PostgreSQL, Redis, and PGVector or similar technologies
• Experience working with AWS cloud services
• Practical knowledge of Docker and Kubernetes
• Understanding of CI/CD workflows, automated testing, and deployment pipelines
• Strong debugging, problem-solving, and software engineering skills
• Ability to collaborate effectively in Agile and cross-functional teams
• Fluent English

Tech Stack

• Python
• React
• RESTful APIs
• Oracle NoSQL
• PostgreSQL
• Redis
• AWS
• Docker
• Kubernetes
• CI/CD
• LangChain

Nice to Have

• LangGraph
• LangSmith
• ETL & Data Management Tools

Location

• Hybrid from Kraków, Poland
• Important: the client requires office visits in Kraków once per week

Recruitment Process

• Technical interview with external partner (Karat)
• 1.5-hour technical interview with the end client
• Cultural fit interview