Senior Backend Engineer (Integrations)

About the Role We are looking for a Senior Backend Engineer to join our Integrations team. In this role, you'll drive the architecture, development, and scalability of backend systems and APIs that connect our platform with the wider ecosystem. We value innovation and are seeking someone eager to bring fresh ideas – especially around integration patterns, API design, and cloud-native backend architectures. What You’ll Do Partner across departments (Product, Integrations, and Platform teams) and work with external partners to evaluate technical trade-offs and guide direction. Proactively identify cross-team technical risks and implement backend process and system improvements. Use data and observability insights to drive architectural decisions, optimize performance, and measure system impact. Design, build, and evolve backend architectures and APIs focused on reliability, performance, and scalability. Review backend code to set high standards and mentor engineers through design feedback, RFCs, and technical guidance. Who You Are Relevant experience as a backend engineer working on production systems and distributed architectures. A customer-first mindset supported by data-driven decision-making when designing scalable APIs. A passion for continuous learning, coaching, and team development through code reviews and technical mentorship. Strong problem-solving skills with a proactive, ownership-focused, and empathetic approach. Proven track record in API design, handling failure modes, and managing technical debt in production environments. What Success Looks Like Within 3 Months: Fully onboarded into the Rossum ecosystem and building relationships across the team. Gaining a deep understanding of our synergy with Coupa and our shared roadmap. Building a solid grasp of Rossum’s backend architecture and identifying initial technical risks or improvement opportunities in the Integrations domain. Within 6 Months: Independently managing key responsibilities and identifying areas for strategic improvement. Actively participating in the alignment of processes within the new Coupa organizational structure. Leading the design and delivery of significant backend integration initiatives while raising architectural consistency across teams. Within 12 Months: Recognized as a subject matter expert within the team, navigating the global Coupa ecosystem. Successfully contributing to Rossum’s mission at a massive scale using new global resources. Ensuring backend services scale reliably with customer usage while establishing shared engineering best practices. 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 (Benefits) 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. What we offer Work-Life Harmony: 5 weeks of vacation, 5 sick/personal days, and a Birthday Day Off to celebrate you. For new parents, we offer an extra 18 weeks of fully paid Maternity leave and 8 weeks of fully paid Paternity leave. Flexibility: Hybrid work model with flexible hours—find the balance that works best for you and work how you work best. Tech & Setup: High-end laptop (MacBook) and tech setup. We also support you with personal development, including language lessons (English & Czech, on all levels). Community & Well-being: Wellness Days (company-wide days to unplug, reset, and recharge), MultSport cards, regular team offsites, and meetups, in a friendly, ambitious team environment.