Senior Full Stack (Java/React) Engineer

Senior Full Stack (Java/React) Engineer

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

• Must 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

• 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

• Luxoft Benefits

• Relocation options

• Experience in an international environment

• Cross-cultural experience

• Feedback culture

• Regular appraisals

• Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority

• Occasional leave - 1 or 2 days/ depending on the circumstances

• Child care leave - 2 days or 16 hours per year

• Absence due to force majeure - 2 days or 16 hours per year

• Maternity Leave - 20 weeks

• Parental Leave - 41 weeks

• Paternity Leave - 14 days

• Expert-led tech courses covering basic to advanced topics

• Internal instructor-led soft skills courses

• Comprehensive in-house self-learning resources for both soft and hard skills

• Access to external self-learning libraries like ProQuest eBook and Udemy for Business

• Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy

• Custom Learning Programs: upskilling, reskilling, technical mentorship

• Leadership Programs for Managers

• Multisport card

• Possibility to order Multisport card at the corporate rate for family members

• LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.

• One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners

• Preferential banking offer

• Preferential car leasing offer

• Cafeteria program discounts for shops, cinema tickets, holiday offers

• Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support

• Private Healthcare Insurance with unlimited access to specialists

• Full dental support

• Travel Insurance

• Possibility to add private healthcare coverage for family members at the corporate rate

• Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer

• Reimbursement for corrective glasses

• Many fun social activities organized by the Luxoft team offline in your city

• Online entertainment events for whole company and local team events

• A workplace where you’re treated with respect within a multicultural team

• Rotation between projects and accounts

• New career opportunities

• The acquisition of rights to the above benefits depends on the form of cooperation. Benefits apply to those employed under a contract of employment.

• Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.

• Options offered by the Polish government.

• Krakow, Poland

• Req. VR-125423

• Java Full Stack

• BCM Industry

• 09/10/2026

• Req. VR-125423

• Krakow, Poland

• Req. VR-125423

• Java Full Stack

• BCM Industry

• 09/10/2026