Luboš Matejčík

• Architected and deployed LLM-based solutions including custom agents, RAGs, and conversational interfaces — covering fine-tuning, custom inference endpoints, observability/evaluation frameworks, and prompt engineering to automate workflows.
• Provided technical guidance and mentorship to IT startups, helping them scale and optimize their solutions.
• Engaged directly with customers to understand needs and deliver tailored solutions.
• Designed scalable architectures to support startup growth and stability.
• Enhanced internal CI/CD tools to improve developer experience and efficiency.
• Served as Head of Security: drove security awareness, conducted penetration testing, and reduced vulnerabilities across projects.
• Built a "Security Checklist Before First Release" process into CI/CD pipelines.
• Mentored colleagues toward their seniority goals, fostering professional growth.

• Led the end-to-end development of the full software stack for controlling and operating an in-house developed and manufactured Scanning Transmission Electron Microscope (STEM), from concept to a fully functional product.
• Contributed to the successful first sale of the microscope by delivering a robust and scalable software architecture, including hardware drivers, image analysis algorithms, physics models and algorithms, manufacturing software tools, proprietary patented algorithms, and more.
• Built and led a high-performing team of 10 developers, driving innovation and ensuring the successful execution of the project.
• Advocated for and successfully led the company’s transition from Windows to a Linux-based development platform. Implemented build tools for multiple software teams, introduced modular architecture support, and facilitated a smooth migration to Linux.

• Designed and developed a high-performance real-time big data component for collecting and storing measured quantities from Scanning Transmission Electron Microscopes (STEM). Integrated advanced compression, filtering, and re-sampling techniques, significantly accelerating STEM development by enabling engineers and developers to capture the exact state of the microscope.
• Led the end-to-end design, development, and company-wide implementation of a crash reporting management process and service for post-mortem analysis and debugging of electron microscopes. This initiative streamlined support and development processes, enhancing overall efficiency and reliability.

Developed e-commerce and information system for a travel agency, enhancing operational efficiency and customer experience. Managed and maintained a Linux server to ensure system stability and security.

Designed and developed automation and embedded devices for home automation, extensions for electronic security systems, and a watchdog application for CCTV systems to enhance reliability and performance.

Developed and implemented e-commerce systems. Communicated with clients to understand their needs, provide guidance, and deliver customised solutions.