David Sipos
Founder @ Stealth AI Startup
About
I’m a CTO and full-stack developer with a passion for turning ideas into products people love to use. I design project architectures, build systems from the ground up, and guide teams through execution—from planning and coding to database design and task management. What drives me is the excitement of growth: learning fast, prototyping quickly, and experimenting with new technologies to find the best solutions. My experience covers multiple industries—including healthcare, proptech, edtech, accounting, CRM, and travel—giving me a broad perspective on how technology can drive growth. At the end of the day, I care about building products that I’d be proud to use myself. I enjoy collaborating with leaders and clients who share that same vision of creating meaningful, scalable technology.
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Hungary
Information Technology & Services
Artificial Intelligence (AI), Voice agents, NestJS, Angular, TypeScript, Technology Leadership, SEO Audits, SEO, On-Page Optimization, Local Seo, SEO Copywriting, Off-Page SEO, Feature Engineering, AWS SageMaker, PyTorch, Neural Networks, Deep Learning, Business Strategy, Writing, Strategic Planning
Experience

Chief Technology Officer | Advisor
I collaborate with software development companies in various capacities as a developer, technology advisor, or development lead depending on project needs. As a Development Lead (CTO role), I am responsible for selecting the right technologies for each project, designing and implementing system architectures, creating database models, and managing project timelines and development coordination. As an AI Advisor, I focus on the practical integration of existing AI technologies into business workflows. This includes building automation pipelines (e.g., with Make.com), developing voice AI agents, researching and testing new AI tools, and implementing innovative solutions such as MCP servers and AI-driven automations. As a Developer, I contribute to legacy or ongoing projects by implementing high-quality, maintainable code and delivering assigned features efficiently. My work consistently bridges the gap between technical innovation and business value, helping teams adopt AI technologies effectively, streamline operations, and enhance their product capabilities.

Owner | Founder
Budapest, Hungary
Founded and established the Fesztiválmagazin blog, dedicated to providing comprehensive festival information and insights, with a focus on Hungarian festivals. Actively curate and share valuable content, ensuring festival enthusiasts have access to up-to-date and relevant information.

Co-Founder | Chief Technology Officer
Budapest, Hungary
Propertizer is a real estate data platform, which helps individuals and professional investors to explore different property investment options for short-term, long-term, and house-flipping scenarios while providing clear and understandable return projections.

Senior Developer, Co-Founder
Budapest
Budapest, Hungary We help real-estate enterprises to reduce costs, improve services and boost revenues. Livlia API is also backing up Livlia.com which offers unique real-estate solutions in Hungary for more than 660+ SMBs, 4500+ agents on a monthly basis.

Software Developer
Collaborated with a talented team to work with Django, a high-level Python web framework, to enhance the platform's capabilities. Took an active role in developing and implementing new features, resolving issues by debugging and fixing bugs, and maintaining the code quality through rigorous testing procedures.

Python Teacher
Budapest
Successfully conducted instructional sessions for two separate groups in a comprehensive 10-week course, focusing on Python basics. Effectively communicated fundamental Python concepts, programming principles, and practical skills to students, fostering their understanding and proficiency in the language.

Python Developer
Budapest
Contributed to the development and maintenance of Odoo modules by creating new modules and addressing issues in existing ones. Collaborated effectively within a team of six professionals, utilizing a ticketing system to efficiently track and manage requests.
Education

This Nanodegree covers the fundamentals of Machine Learning and Deep Learning. Students will learn to build intelligent systems using Python and popular data science libraries and will gain hands-on experience by developing a machine learning workflow on a real-world dataset. By the end of the course, students will have a solid understanding of the basics of Machine Learning and Deep Learning.
David Sipos's Contact Information
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