Expert Fullstack Consultant

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.

Your tasks

• 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 communication skills


• 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