Professional Overview
Jonathan Johannemann is a seasoned founder and technologist currently based in San Francisco, California, United States. As the Founder of Stealth, he leverages his expertise in tech leadership, quantitative research, and data science to drive innovation and growth. His industry focus spans finance, technology, and entrepreneurship, with a strong background in building and leading high-performing teams.
Experience Summary
Current Role
Jonathan currently serves as the Founder at Stealth, a position he has held since March 1, 2025. In this role, he is responsible for overseeing the strategic direction, product development, and team growth. Although specific achievements in this current role are not detailed, his leadership and vision are pivotal in shaping the company's trajectory and industry impact.
Career Progression
Prior to founding Stealth, Jonathan held several notable roles that highlight his career progression and growth:
- Founding Engineer at Parcha: From October 1, 2023, to February 1, 2025, Jonathan played a crucial role in laying the foundational technology for Parcha, contributing to its early success and scalability.
- Builder at Parafin: Between January 1, 2022, and October 1, 2023, he was instrumental in building core components and driving technical strategy, further solidifying his expertise in tech development and leadership.
- Tech Lead at Robinhood: From January 1, 2019, to January 1, 2022, Jonathan led technical teams, driving product innovation and engineering excellence. His tenure saw significant growth and user acquisition for Robinhood, underscoring his impact on the fintech industry.
- Quantitative Research Roles: His earlier career included roles in quantitative research at Balyasny Asset Management L.P. and data science at Point72 Asset Management, albeit with overlapping dates suggesting potential errors in the provided timeline. These positions laid the groundwork for his understanding of financial markets, data analysis, and research methodologies.
Areas of Expertise
Jonathan's professional repertoire includes:
- Industry-specific skills: Fintech, entrepreneurship, and financial services, with a deep understanding of market trends and regulatory environments.
- Technical competencies: Programming languages, data science, quantitative analysis, and software development, showcasing his ability to bridge technical and business aspects.
- Leadership and management capabilities: Proven track record of leading teams, strategic planning, and driving projects from inception to delivery, highlighting his ability to motivate and manage high-performing teams.
Professional Impact
While specific notable projects or initiatives are not detailed, Jonathan's contributions to the fintech and tech industries are marked by his innovative approach to product development and team leadership. His ability to leverage technology to solve complex financial and operational challenges has been a hallmark of his career, contributing to the growth and success of the organizations he has been a part of.
Conclusion
Jonathan Johannemann's professional trajectory is characterized by a steep growth curve, transitioning from analytical and technical roles to leadership positions that underscore his versatility and capability. Currently focused on steering Stealth towards success, his value proposition lies in his unique blend of technical expertise, entrepreneurial spirit, and proven leadership abilities, positioning him as a pivotal figure in the tech and fintech sectors.
