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!