Backend Software Engineer / Developer (Java AI MCP) Krakow / WFH to 38,000 PLN p/month

Are you a Java technologist with a strong knowledge of AI and its practical uses within software engineering?

You could be progressing your career in a senior, hands-on Backend Software Engineer role at a global FinTech / CFD trading company that has been consistently voted as a top employer.

Your role:

As a Backend Software Engineer you will review and make improvements to Java based web trading applications across the organisation with challenges around scalability, security, performance and speed, looking to introduce AI innovation within the business.

You will be using Claude code (and other AI tools and frameworks) throughout the development lifecycle from initial requirements shaping through to deployment to improve speed and efficiency of software development and release.

This is an influential role where you will work across product engineering teams to showcase processes and procedures with AI without cutting corners and ensuring compliance.

Location / WFH:

You can work from home 3-4 days week, meeting up with colleagues in the Krakow offices that offer a wide range of facilities and all the latest kit.

About you:

• You have advanced backend Java development skills, including multithreading and garbage collection
• You have used AI tools in a commercial enterprise e.g. Claude, Model Context Protocol (MCP), Cursor, Windsurf, Prompt, Context engineering and be interested to learn and use more AI to improve efficiency and software delivery
• You have a strong foundation in Computer Science including OOP, Data Structures, Design Patterns
• You have a good understanding of scalability and how best to optimise backend systems for speed / latency
• You have experience with Kafka (or similar) for data streaming and AWS cloud services
• You have fluent English language skills

What's in it for you:

• Salary to 38,000 PLN
• Private medical care for you and your family
• Multikafeteria system (you can choose multisport card, vouchers etc.)
• Life Assurance
• 25 days holiday (+ additional day for your birthday)
• 2 Volunteer days p/year
• Employee-led LGBTQ+, Women's, Black, Parents and Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture
• Summer and Christmas parties as well as other social events

Apply now to find out more about this Backend Software Engineer / Developer (Java AI MCP) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.