Expert Fullstack Consultant

GFT TECHNOLOGIES SE; Kraków; Hybrid; PLN 214,000 - 282,000; Full time

Job summary

GFT TECHNOLOGIES SE in Kraków is seeking an Expert Fullstack Consultant to join a team delivering large-scale financial platforms. You will work across frontend and backend, focusing on digital transformation, process automation, and AI-driven software development in a highly regulated environment.

You will design and implement full stack solutions using React JS and Java, leverage AI copilots, and collaborate with stakeholders to translate business requirements into scalable software while

Qualifications

• 7+ years of experience as a Full Stack Developer.
• Strong React JS and Java experience.
• Experience with GitHub CLI and Microsoft 365 Copilot.
• Sound understanding of Generative AI concepts and frontier models.
• Strong domain knowledge in collateral and margin management.
• Experience with prompt engineering.
• Understanding of structured context in codebases, including AGENTS.md and skills frameworks.
• Openness to work hybrid from Kraków 3 days a week.

Responsibilities

• Design and develop full stack applications using React JS and Java.
• Build and enhance solutions supporting investment banking operations.
• Leverage GitHub Copilot and Microsoft 365 Copilot in daily development activities.
• Apply Generative AI capabilities to improve software delivery and business processes.
• Collaborate with stakeholders to understand business requirements and translate them into technical solutions.
• Implement and maintain scalable, high-quality, and secure software solutions.
• Participate in code reviews and promote engineering best practices.
• Contribute to application modernization and automation initiatives.

Skills

React JS

Java

GitHub CLI

Microsoft 365 Copilot

Generative AI concepts

Collateral and margin management

Prompt engineering

AGENTS.md & skills frameworks

Hybrid work readiness

Tools

GitHub CLI

Copilot tooling

Job description

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Expert Fullstack Consultant

Date: Sep 23, 2026

Location: Kraków, PL, 30-302

Working place: Remote / Hybrid

Working Location:

Type of contract: B2B contract

Salary range: 155 - 205 PLN/H

What will you do?

You will join a team delivering large-scale financial services platforms supporting investment banking operations. The role focuses on digital transformation, process automation, application modernization, and AI-driven software development within a highly regulated environment. You will work across both frontend and backend components while leveraging modern AI tools and technologies to improve development efficiency and business outcomes.

• Design and develop full stack applications using React JS and Java
• Build and enhance solutions supporting investment banking operations
• Leverage GitHub Copilot and Microsoft 365 Copilot in daily development activities
• Apply Generative AI capabilities to improve software delivery and business processes
• Collaborate with stakeholders to understand business requirements and translate them into technical solutions
• Implement and maintain scalable, high-quality, and secure software solutions
• Participate in code reviews and promote engineering best practices
• Contribute to application modernization and automation initiatives

Requirements

• 7+ years of experience as a Full Stack Developer
• Strong experience with React JS and Java
• Experience working with GitHub CLI and Microsoft 365 Copilot
• Sound understanding of Generative AI concepts and frontier models
• Strong domain knowledge in collateral and margin management
• Experience with prompt engineering
• Understanding of structured context in codebases, including AGENTS.md and skills frameworks
• Openness to work hybrid from our client's office (Kraków) 3 days a week

Nice to have

• Knowledge of databases, preferably Sybase
• Understanding of AI agents and ability to build them when required
• Understanding of different AI model types and concepts such as online models, offline models, open-weight models, RAG, and context management
• Experience in AI engineering

We are GFT Poland. WE KNOW how to tackle complex issues with innovative approach to deliver the highest value. Our reputation has been built around one simple rule: we do not overpromise, WE DELIVER. We deliver to our employees, clients and partners. WE GROW as you grow, so investing in you is our business strategy. Caring for each other is our priority. WE CARE who you are, what you need, how you feel. WE CARE to smile, have fun and develop as human beings.

Why Choose GFT?

• A culture of top performance
• Deep tech IT engineering & consulting
• 1200 skilled & top-class experts
• 77% of the team are regular/senior
• Products that contribute to a sustainable world
• Competitive salary and benefits
• Ambitious projects, trainings and tools you need to flourish
• Google Cloud Partner of the Year - for going above and beyond for customers