Jerguš Lejko (TopK)
Overview
Jerguš Lejko is a Slovak computer scientist and entrepreneur, prominently recognized as a co-founder and CTO of TopK, a startup specializing in the development of advanced AI-native search engines. Founded in 2024 along with Marek Galovič, TopK aims to revolutionize the way data is searched by combining vector searches, keyword matching, filtering, and customizable ranking into one unified system. This approach addresses the limitations of traditional search systems, focusing on the needs of AI-driven applications. Jerguš Lejko, with his expertise in large-scale systems and AI tools, has contributed significantly to building a dynamic platform that promises high performance, flexibility, and cost efficiency.
Recent Developments
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July 2025: TopK announced a successful seed funding round of €4.6 million ($5.5 million), with participation from investors such as Earlybird and KAYA. The funding is earmarked for expanding the team's capabilities and enhancing enterprise offerings, particularly in web-scale search use cases. Jerguš Lejko highlights the importance of integrating vector-based retrieval for unstructured and multi-modal data.
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May 2025: TopK showcased at the Data Council AI Launchpad, where Jerguš and Marek introduced a unified search platform that combines dense and sparse vector searches, keyword scoring, and domain-specific retrieval functionalities. This innovation aims to improve search relevance and performance significantly.
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January 2025: Lejko's commitment to transforming search infrastructure was reiterated during discussions about expanding TopK's functionalities to include support for natural language understanding and multi-modal data.
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2024: The foundation year for TopK marked a significant collaboration between Jerguš Lejko and Marek Galovič, rekindling their partnership from prior collaborations on AI systems to tackle modern search challenges with the TopK initiative.
Personal Information
| Attribute | Information |
|---|---|
| Full Name | Jerguš Lejko |
| Born | Unknown |
| Nationality | Slovak |
| Occupation | Entrepreneur, CTO, Computer Scientist |
| Known For | Co-founder and CTO of TopK |
| Net Worth | Not publicly disclosed |
| Education | Background in Computer Science |
Early Life and Education
Jerguš Lejko's early life and educational details are sparse; however, his strong foundation in computer science is evident from his professional achievements and roles. Hailing from Slovakia, Jerguš's passion for technology and systems piqued during his formative years, leading him to pursue a career in computer science. His educational background contributes significantly to his role in developing complex AI systems. Meeting Marek Galovič during his schooling years laid the groundwork for their future collaborative ventures, including their foundational work at TopK, where they combined their technical expertise in AI and data systems to develop groundbreaking solution architectures.
Career and Notable Achievements
- 2024: Co-founded TopK with Marek Galovič, focusing on creating a hybrid retrieval engine for AI-native applications.
- 2025: Instrumental in securing €4.6 million in seed funding for TopK, helping to expand the company's development teams and technical capabilities.
- Under his leadership, the company has presented at several significant tech events, sharing innovations that merge vector searches with traditional database methods.
- Successfully implemented a data platform that caters to a variety of industries, including e-commerce, healthcare, and finance, ensuring high performance and customization for enterprise-grade applications.
Current Work and Impact
Currently, Jerguš Lejko serves as the CTO of TopK, where he is focused on expanding the capabilities of the TopK platform. The platform is designed to integrate seamlessly with various AI-driven applications, providing high-speed and cost-efficient data retrieval solutions crucial in today's data-driven marketplaces. His work centers on enhancing AI-native infrastructure to optimize the search mechanisms for high-volume data management, thus pushing the boundaries of traditional search databases.
Conclusion
Jerguš Lejko's contributions to the field of computer science, particularly in the evolving domain of AI search technology, are of substantial impact. By co-founding TopK, he targets the growing demands for intelligent search solutions responsible for handling the complexity of modern data environments. As the company progresses, Jerguš's vision of making TopK the central query layer for advanced applications continues to drive innovation, ensuring that their platform addresses the intricate needs of developers and AI agents globally. His work sets a precedent for future developments in hybrid search systems, highlighting the promising potential for further advancements in AI-driven data retrieval.