About the role
About the Role At Rossum, we use world-class machine learning and intuitive UI to eliminate useless paperwork and make the world go faster. Our AI Research Team builds proprietary, state-of-the-art neural architectures that power Rossum’s production systems, processing millions of documents every week for customers worldwide. We are looking for a Senior AI Research Engineer to join our AI Research Team (R&D) . In this role, you’ll push the boundaries of document understanding - training advanced models from the ground up and building research prototypes and solutions that directly shape our product capabilities. You will operate at the crossroads of cutting-edge global research and Rossum’s in-house model development, directly influencing our long-term model strategy and technical roadmap as successful ideas rapidly roll into systems used by customers at scale. You’ll join a team of experienced researchers and engineers, tightly coupled with Product and AI Platform Teams, working in a shared monorepo to ensure fast experimentation, continuous delivery, and real customer impact. What You'll Do You will be a key driver of Rossum’s document understanding strategy, owning end-to-end research initiatives while shaping the long-term evolution of our models and platforms. Key responsibilities include: Lead research initiatives across deep learning, NLP, computer vision, and multimodal systems — operating at the intersection of global research and in-house innovation to turn promising ideas into Rossum’s proprietary, production-ready models. Design and run bold experiments with a hacker mindset, rapidly prototyping while considering deployment trade-offs to deliver impact into real products — optimizing for inference cost, latency, robustness, and reliability. Own large-scale NLP and vision training systems , including architecture design, distributed training, in-house benchmarks, aligning key metrics with product requirements. Leverage top-tier research infrastructure , including clusters of high-end GPUs and large-memory machines, to run ambitious experiments at real-world scale. Shape Rossum’s technical roadmap by identifying high-impact research directions and driving them from concept to customer impact. Mentor and influence others by guiding junior researchers and leading cross-team technical discussions while documenting insights and best practices. Who You Are We’re looking for a seasoned researcher who brings: 5+ years of experience in applied ML research, ML engineering, or deep learning–driven product development. Strong Python skills and hands-on experience with frameworks such as PyTorch or TensorFlow. Scientific rigor and strategic execution , with the ability to design strong experiments and turn research ideas into scalable, production-grade systems. Deep insight into training NLP and vision models , including architecture design, large-scale experimentation, and deployment trade-offs. Ownership and curiosity , staying close to global research while driving in-house innovation end to end. What Success Looks Like Within 3 months: You’ve ramped up on Rossum’s research stack and data pipelines, built strong relationships with the AI Platform and Product teams, and shipped your first meaningful improvement to a production model or evaluation framework. Within 6 months: You’re leading multiple research efforts end to end — running well-designed experiments, improving training efficiency or reproducibility, and influencing which ideas move forward. Within 12 months: You’ve delivered a major research initiative with measurable gains in accuracy, latency, or cost, and you’re helping define the next year’s research agenda and technical priorities. Why Join Us? At Rossum.ai , we're on a mission to revolutionize business communication by harnessing the power of AI to make document processing effortless and intelligent. Real ownership and strategic impact over Rossum’s core AI systems and long-term model direction. Highly collaborative environment within the AI Research team and close partnership with the Product, Platform, and company founders, including the CTO. Exceptional compute infrastructure and proprietary architectures for large-scale experimentation. Global customer impact through technology used daily by companies around the world. Experiment-driven culture with pragmatic delivery and quarterly recognition for standout research contributions. Inspiring workspace and full tech setup in Karlín, including a 200 m² terrace with views of Prague Castle. Ready to make an impact in your next role as a Senior AI Research Engineer? Apply now!