Senior Backend Engineer (Main Application Team)

About the Role We’re looking for a Senior Backend Engineer to join our MAT – Backend (Main Application Team). In this role, you’ll play a key part in designing and evolving the backend systems that power Rossum’s core product, supporting complex document processing workflows and data flows used by customers at scale. This role goes beyond implementation; our engineers knew that technical debt and scalability were problems we needed to solve, and we’re looking for you to help shape those solutions. You’ll work closely with Product, Frontend, and other Backend teams to deliver features that balance immediate needs with long-term maintainability. What You'll Do You will be a critical contributor to our backend efforts, managing day-to-day operations while identifying strategic improvements to keep our systems reliable and easy to build on. Key responsibilities include: Design, implement, and maintain backend services and APIs in Rossum’s core platform. Take ownership of larger backend features or components from initial design through to production. Write high-quality, well-tested code with a constant focus on scalability, reliability, and security. Partner across departments , participating in code reviews to offer constructive guidance and collaborating with Frontend and Product teams. Proactively identify and address performance, reliability, and operational issues to drive technical excellence. Who You Are We’re looking for a peer who is a "bullshit-free" problem solver and isn't afraid to challenge assumptions. You should bring: Strong professional experience in backend engineering within a production environment. Advanced knowledge of Python (or a similar backend language) and a solid understanding of relational databases. A balance of hands-on execution and strategic thinking , specifically in designing REST APIs and operating backend services. Experience with AI coding tools and a proven track record of owning features through their full lifecycle. A proactive and empathetic approach to communication and cross-functional collaboration. Bonus points for: Experience with distributed systems, messaging, and cloud-based architectures. Familiarity with Docker, CI/CD pipelines, or infrastructure tooling. A passion for mentoring junior engineers or acting as a technical point of contact. What Success Looks Like Within 3 Months: You’ll build a strong understanding of our backend architecture and start delivering changes independently as a reliable contributor to the team. You'll gain a deep understanding of our synergy with Coupa Software and our shared roadmap. Within 6 Months: You’ll own larger features end-to-end and begin improving existing systems through refactoring or performance tuning. Within 12 Months: You'll act as a go-to engineer for specific backend areas, helping shape technical direction and raising the engineering bar across the MAT team. Why Join Us? At Rossum , we’re on a mission to free the world from boring manual data entry. Our AI platform helps companies save millions of hours, allowing professionals to focus on creative, impactful work. In an exciting move for our future, we have joined forces with Coupa , the world’s leading unified platform for Business Spend Management. By combining Rossum’s cutting-edge document AI with Coupa’s global ecosystem, we are uniquely positioned to redefine how businesses operate at a massive scale. You can read more about this exciting milestone and our shared vision in the official announcement here . What sets us apart? Cutting-edge AI technology reshaping how businesses operate globally. A collaborative, supportive environment where autonomy thrives. Opportunities to grow in a fast-scaling company. A culture that values diversity, empathy, and genuine connection. As part of the Coupa family, you’ll enjoy: the agility of a fast-moving, innovation-focused team with the stability and reach of a global market leader. For you, this means an even greater opportunity to make an impact, access new global markets, and grow your career within a collaborative culture that values autonomy, diversity, and genuine connection. Together, we’re not just automating data—we’re giving time back to the world’s professionals. What We Offer Future with Coupa : We are currently in an integration phase, during which we are reviewing and aligning our total rewards programs. Our goal is to blend Rossum’s local culture with Coupa’s global standards to provide you with a long-term future featuring clear career pathways, tailored learning journeys, and world-class development opportunities. Current Benefits: Flexible working models with a base in vibrant Prague and options for hybrid or remote setups. Competitive benefits designed to support your well-being, growth, and work-life harmony. 5 weeks of vacation, 5 sick/personal days, and extra 2 weeks of paternity leave. Personal development, education, and language courses. High-end tech (MacBook, external monitor, keyboard of your choice) and a MultiSport card. Team offsites, regular meetups, and a friendly, ambitious team. Ready to make an impact? Apply now!