
Job Overview
Location
Cologne
Job Type
Full-time
Category
Data Scientist
Date Posted
March 10, 2026
Full Job Description
đź“‹ Description
- • DeepL is a globally recognized AI product and research company dedicated to developing secure and intelligent solutions for complex business challenges. Our advanced Language AI platform is trusted by over 200,000 businesses and millions of individuals worldwide, offering human-like translation, enhanced writing capabilities, and real-time voice translation. Building on a legacy of innovation, quality, and security, DeepL is expanding its AI expertise beyond language with initiatives like DeepL Agent, an autonomous AI assistant designed to revolutionize how businesses and knowledge workers operate. Since its founding in 2017 by CEO Jarek Kutylowski, DeepL has grown to over 1,000 passionate employees and secured significant investment from prominent venture capital firms such as Benchmark, IVP, and Index Ventures.
- • Our overarching ambition is to establish DeepL as the preeminent global leader in trusted, intelligent AI technology, creating products that facilitate superior communication, strengthen connections, and generate tangible positive impact. To realize this vision, we are actively seeking talented individuals to join us on this transformative journey. If you are prepared to contribute to shaping the future of AI and advance your career within a dynamic, purpose-driven environment, DeepL presents an unparalleled opportunity.
- • What distinguishes DeepL is our unique fusion of state-of-the-art AI technology, engaging and meaningful work, and a supportive culture that fosters genuine employee thriving. We are a collective of innovators, researchers, and creators united by a common objective: to unlock human potential by making work more streamlined, intelligent, and interconnected. The feedback we consistently receive about the work environment at DeepL is overwhelmingly positive. This may stem from our technology that empowers millions of individuals and businesses to communicate and collaborate more effectively daily, or from the foundational principles of trust, curiosity, and care that define our organizational culture. Regardless of the specific reason, being a part of DeepL signifies joining a team deeply committed to innovation, continuous growth, and employee well-being.
- • The Language AI teams at DeepL are the bedrock of our company's achievements. We are a cohesive group of researchers who engage in close collaboration with engineers, product managers, and designers. Our core mission is to engineer the world's foremost language AI system, delivering flawless translations for the most demanding applications. This responsibility encompasses the entire lifecycle of the machine learning models that underpin our language AI products, including data management, model training, quality assurance, and operational deployment. Within our highly collaborative team structure, every member is empowered with the autonomy to drive significant impact across the organization.
- • As a Staff Research Scientist, you will be instrumental in spearheading scientific innovation for our core text translation products. This is a high-impact, hands-on role designed for a research leader capable of defining long-term scientific strategies, rapidly prototyping new concepts, executing large-scale experiments, and driving groundbreaking advancements from conception through to production deployment. In this highly competitive and rapidly evolving field, your primary responsibility will be to address the fundamental challenges that will ensure DeepL remains at the vanguard of AI capabilities.
- • Your responsibilities will encompass leading hands-on research and development efforts for our core text translation products, driving innovation in methodologies crucial for achieving perfect translation quality, as well as advancing translation quality estimation and evaluation techniques. You will be tasked with designing, training, and optimizing large-scale, LLM-based translation models to enhance multilingual accuracy, contextual understanding, robustness, and to meet diverse latency requirements. You will own the complete model delivery lifecycle, from initial prototyping and ablation studies to training, rigorous evaluation, optimization, and seamless production deployment. Close collaboration with engineering teams will be essential to integrate these advanced models into real-time systems, guaranteeing reliability, high uptime, and consistent quality at scale. Furthermore, you will drive enhancements in inference efficiency, model serving strategies, voice user experience, and robustness against real-world acoustic variations. Establishing robust practices for evaluation, ensuring reproducibility, implementing effective monitoring systems, and facilitating continuous model improvement in production environments will be key. Finally, you will play a vital role in mentoring junior researchers and engineers, fostering a culture of hands-on collaboration, and elevating the overall standards for model quality and operational excellence within the team.
Skills & Technologies
About DeepL SE
DeepL SE develops and operates neural machine translation technology. Founded in 2017 as Linguee GmbH, the Cologne-based company rebranded in 2019 after creating DeepL Translator, a service noted for outperforming Google Translate in blind tests. The platform supports 33 languages and offers browser, desktop, mobile and API access, serving individuals, businesses, and developers worldwide. Revenue comes from tiered subscription plans for pro features and volume-based API usage. DeepL continues to invest in AI research to maintain translation quality and expand language coverage.
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