LLM Engineer (Mid)
Tooploox Sp. z o.o.Lower Silesian Voivodeship, Poland • Łódź Voivodeship, Poland • Warsaw, Masovian Voivodeship, Poland
Posted April 1, 2026
Full Time
About the Company
Tooploox is an AI software development company offering custom AI solutions and AI software development services that help innovative companies and startups design and build digital products with generative AI, mobile, and web technologies. Our longstanding commitment to AI innovation is backed by an illustrious R&D team of over 40 engineers and researchers, with half PhD and PhD candidates, who have collaborated on projects in world-renowned labs such as Stanford, Carnegie Mellon University, ETH Zurich, and INRIA. Tooploox AI scientists have published or co-published so far over 15 research papers contributing to groundbreaking AI research, securing multiple patents, and publishing extensively and regularly in top-tier conferences like NeurIPS, ICML, ECCV, IJCAI, WACV, and journals like Nature. Over the past decade, we’ve worked with over 100 companies, including Light, Group Nine Media, Ro, ETH Zurich, Voyage, Granular.ai, and Statespace. At Tooploox, we help companies deliver successful products by applying our comprehensive and reliable AI, mobile, web, and design expertise. We build long-term partnerships and form professional remote teams that continue to grow with your business. We improve people's lives through technology one step at a time. Connect with us to follow the latest news from Tooploox!
Job Description
Tooploox is seeking a Mid Applied Researcher to work on AI projects, designing and implementing LLM fine-tuning and optimization approaches, and collaborating with partners to bring research prototypes into the eBay ecosystem.
Requirements
- Strong research foundation in NLP, LLMs, neural architectures, and modern training/fine-tuning methodologies.
- Hands-on coding skills with proven experience in implementing, evaluating, and scaling machine learning models.
- Data-based problem-solving skills, specifically the ability to translate complex technical work into business impact and quantifiable results.
- Fluency in English
Benefits
- Relaxed atmosphere
- Flexible working hours and location
- Home-made pizza from the office pizza oven
