🟠Senior Full Stack (Java/React) Engineer🟠

🟠 Join us in Luxoft!

🏦Flexible working hours

🩺Private Medical & Dental care & Life Insurance

💰 Paid Referrals

🏋🏽 MyBenefit program (sports card, well-being program etc.)

🌎 Internal Mobility program - possibility of rotation between projects, locations, accounts

🎓 LuxTalent platform (webinars, training, courses)

🟠 Project Description

We're looking for a senior Full-Stack Developer (Java + React) to join our client's team and help build a new 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

🟠 Skills

What is relevant to have

-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

-Strong SQL skills and experience with relational databases

-Experience in automated testing (JUnit, Jest, React Testing Library or similar)

-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

What is nice to have

-Hands-on experience with Sybase (ASE and/or IQ), including stored procedures and performance tuning

-Knowledge of the collateral management and margin domain (e.g. margin calls, ISDA/CSA, initial and variation margin, SIMM)

-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

🟠 Seniority

Senior

🟠 Work mode

hybrid in Krakow, Wrocław, Gdansk or Warsaw