Senior Backend Engineer: AI/GenAI in Python & Java (Hybrid)

GFT TECHNOLOGIES SE; Kraków; Hybrid; PLN 163,000 - 249,000; Full time

Benefits offered by this job

Hybrid work in Kraków

Medical

Lunch subsidy

Life insurance

Online training

Job summary

GFT Poland is seeking a Senior Backend Engineer to build production-grade AI and GenAI solutions using Python and Java. You will contribute to a large-scale enterprise tech transformation, integrating with an existing Java ecosystem while enforcing strong security, testing and governance.

You will design LLM-based applications, RAG pipelines and agentic workflows, develop secure APIs and microservices, and work across teams including architects and QA to ensure delivery and reliability.

Qualifications

• 4+ years of professional software engineering experience in Python and Java.
• Experience building AI/GenAI solutions and practical knowledge of LLM capabilities.
• Experience designing and implementing RAG solutions and agentic AI workflows.
• Knowledge of AI governance, security, traceability and auditability.
• Experience with REST, microservices and API development.
• Hands-on with CI/CD pipelines, cloud platforms (Azure preferred).
• Experience with relational databases such as PostgreSQL or Oracle.

Responsibilities

• Design and develop production-grade AI and GenAI solutions in Python.
• Build and integrate LLM-based applications, RAG pipelines and agentic workflows.
• Develop secure APIs, microservices and integration components.
• Integrate Python solutions with existing Java services and enterprise platforms.
• Follow secure coding standards and AI governance requirements.
• Contribute to CI/CD pipelines, quality gates and automated security checks.
• Collaborate with architects, Tech Leads, QA, platform and operations teams.

Skills

Python

Java

AI/GenAI

LLM

RAG

REST

Microservices

CI/CD

Kubernetes

Azure

Tools

Spring Boot

PostgreSQL

Oracle

Docker

Job description

GFT Poland is seeking a Senior Backend Engineer to build production-grade AI and GenAI solutions using Python and Java. You will contribute to a large-scale enterprise tech transformation, integrating with an existing Java ecosystem while enforcing strong security, testing and governance.

You will design LLM-based applications, RAG pipelines and agentic workflows, develop secure APIs and microservices, and work across teams including architects and QA to ensure delivery and reliability.