?Project Description: We're looking for a senior Full-Stack Developer (Java + React) to join our client's team and help build a current AI-enabled application platform. The team works with modern AI-assisted tools such as GitHub Copilot and generative AI, and cares about clean code, agile methods and high-quality delivery. The client is in the investment banking industry, and the platform supports collateral and margin management. ?

Responsibilities:
Design, develop and maintain scalable back-end services and APIs using Java (Spring Boot) Build responsive, high-performance front-end applications using React and TypeScript Use AI-assisted development tools such as GitHub Copilot to speed up delivery while keeping quality and security high Design and integrate generative AI features into business applications, including prompt engineering, LLM integration and evaluation of model outputs Define and consume RESTful APIs, and communicate requirements and constraints clearly across teams Advise and guide the team on architecture, design decisions and best practices, including the responsible use of AI tools Mentor developers and raise the team's technical level through code reviews and pair programming Translate business and product requirements into robust end-to-end technical solutions Apply clean code principles and help improve engineering standards, tooling and CI/CD pipelines Write and maintain automated tests (unit, integration, end-to-end) on both front end and back end Take an active part in agile ceremonies (Scrum/Kanban), including refinement, planning, reviews and retrospectives Work closely with QA, product managers, architects and business stakeholders to deliver high-quality work that fits business needs Support and improve existing applications in a fast-paced, enterprise investment-banking environment ?Mandatory Skills Description:



At least 8 years of professional software development experience, including long-term projects Strong hands-on experience with Java (Java 11+) and Spring / Spring Boot Strong hands-on experience with React, TypeScript/JavaScript, HTML and CSS Proven experience delivering full-stack features end to end, from UI to back-end services and the database Hands-on experience with GitHub Copilot or similar AI coding assistants in daily development Practical knowledge of generative AI and prompt engineering, including integrating LLM APIs (e.g. OpenAI, Azure OpenAI) into applications Familiarity with CI/CD pipelines and Git-based workflows Clean coding skills Excellent problem-solving skills Familiarity with agile practices (Scrum, Kanban, etc.) Good communication skills and the ability to state requirements clearly to other teams ?Nice-to-Have Skills Description: Experience in automated testing (JUnit, Jest, React Testing Library or similar) Experience in investment banking or capital markets Exposure to RAG architectures, vector databases or AI agent frameworks Working knowledge of Unix/Linux and shell scripting ?Languages: English: C1 Advanced ?Our

Benefits:
? Employment & Compensation
• Stable employment based on an employment contract
• Copyright-based remuneration for Developers, resulting in a higher net salary ? Health & Well-being
• LuxMed private health and dental care
• Life and travel insurance
• MyBenefit program (sports card, well-being initiatives, and more)
• Employee Assistance Program for you and your family, including psychological consultations, coaching sessions, and support in personal matters ? Everyday Convenience
• Car rental options ? Learning & Development
• Access to the LuxTalent platform, offering webinars, training sessions, and certified courses ? Career Growth & Mobility
• Internal Mobility Program, enabling rotation between projects, locations, and accounts …and much more

📌 Senior Full Stack Developer (Banana Shire)
🏢 Luxoft Poland
📍 Banana Shire