Senior Backend Engineer (f/m/d)

Moss·Warsaw·Remote·Posted 13 July 2026

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About the role

At Moss, we give finance professionals the power to automate their day-to-day and make forward-thinking decisions. Our culture is what makes that possible: we play to win, we obsess over quality, and we win as One Moss, and it works. Moss closed a €35 million Series C in August 2026, crossing a €1 billion valuation, and became one of Europe's fintech unicorns. Join us for what's next. We are looking for Senior Backend Engineers (f/m/d) for a variety tribes in Warsaw. Collaborating closely with designers, product managers and frontend engineers, you will bring innovative ideas to life, helping us build the Finance AI platform for Europe's mid-sized businesses. Your responsibilities Here's a bit more on what you can expect to be doing day-to-day: - Backend Development: Lead the development of the application, ensuring it aligns with the product requirements and meets performance and usability standards. Proactively provide regular updates on work progress, achievements and challenges to product managers (PMs) and designers. - Collaborative Planning: Partner with PMs and designers during project kick-offs to gain a comprehensive understanding of the overall vision, user…

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