Senior Full-Stack Engineer (Java/React) for AI Platform

Luxoft Poland; Kraków; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Private Medical Insurance

Dental Insurance

Life Insurance

MyBenefit program

Internal Mobility

Job summary

Luxoft Poland in Kraków is seeking a senior Full-Stack Developer (Java + React) to help build an AI-enabled application platform for investment banking. You will design and implement scalable backend services and responsive front-end features.

You will work with AI-assisted tools like GitHub Copilot, apply clean code practices, and contribute to CI/CD, testing, and agile ceremonies to deliver high-quality software.

Qualifications

• 8+ years of professional software development experience including long-term projects.
• Strong hands-on experience with Java (Java 11+) and Spring / Spring Boot.
• End-to-end full-stack delivery from UI to backend and database.
• Hands-on use of AI coding assistants such as GitHub Copilot.
• Knowledge of generative AI and prompt engineering with LLM APIs.
• Strong SQL skills with relational databases.
• Experience in automated testing (JUnit, Jest, React Testing Library).
• Familiarity with CI/CD pipelines and Git-based workflows.
• Excellent problem-solving and communication; familiar with Agile practices.

Responsibilities

• Design, develop and maintain scalable back-end services and APIs using Java Spring Boot.
• Build responsive front-end apps using React and TypeScript.
• Incorporate AI-assisted features and prompt engineering into platform.
• Define and consume RESTful APIs across teams.
• Mentor teammates and lead code reviews and pairing.
• Translate business requirements into end-to-end technical solutions.
• Improve CI/CD pipelines and engineering tooling.
• Collaborate with QA, product managers, architects and stakeholders.
• Write automated tests for front and back ends.

Skills

Java 11+

Spring Boot

React

TypeScript

AI tooling (GitHub Copilot)

LLM integration

SQL

JUnit/Jest

CI/CD

Agile/Scrum

Communication

Tools

GitHub Copilot

OpenAI API

Job description

Luxoft Poland in Kraków is seeking a senior Full-Stack Developer (Java + React) to help build an AI-enabled application platform for investment banking. You will design and implement scalable backend services and responsive front-end features.

You will work with AI-assisted tools like GitHub Copilot, apply clean code practices, and contribute to CI/CD, testing, and agile ceremonies to deliver high-quality software.