Syd Reynolds
AI Agent Systems Engineer | Technical Founder | Head of Engineering @ PayAngel | Building production agentic systems
- Role
- Head of Engineering at Payangel
- Location
- San Francisco, CA, US
- LinkedIn followers
- 500 followers
About Syd Reynolds
I build production AI agent systems. Not demos, not wrappers — real architecture with multi-model routing, episodic memory, vector stores, and tool orchestration that runs in production. My background sits at the intersection of engineering and entrepreneurship. I\'ve been a technical founder (Techstars NYC \'23), an engineering lead, and currently Head of Engineering at PayAngel where I\'ve led the rebuild of a cross-border payments platform serving 150k+ users. Right now I\'m deep in the architecture of agentic AI — specifically how to build systems that are reliable, observable, and actually useful to end users. If you\'re building in this space and want to compare notes, I\'m always interested in connecting with other builders.
Experience
Head of Engineering
Jan 2024 — Present · New York, NY, US
Led the design and development of the new PayAngel ecosystem, a suite of products enabling cross-border payments, wallet management, business transactions, and internal operations.• Oversaw a cross-functional team including 2 product managers, 8 engineers, and 3 cloud/infra specialists, while remaining hands-on in architecture, development, and delivery.• Re-architected and unified system design, creating a coherent platform that supported- A mobile application for 150k+ users to send and receive cross-border and domestic payments- A business portal for organizations to manage supplier payments, employee payroll, and customer transactions — launching an entirely new line of business- An admin portal for 50+ finance, compliance, and customer experience staff, enabling secure oversight of all platform activity.• Directed a sensitive database migration of 150k+ user records and $3M+ historical transactions, ensuring data integrity, compliance, and financial reconciliation.• Balanced business priorities and technical execution, working with leadership to define requirements, translate product needs into technical specifications, and deliver iterative solutions while designing for scalability.• Implemented engineering processes and culture, including agile workflows, product proposal pipelines, and mentorship practices — driving alignment, accountability, and team growth.• Recognized for unconventional but effective problem solving: breaking down complex challenges into high-leverage, scalable solutions and guiding the team to execute against the roadmap while contributing directly to development.
Education
University of Chicago
Bachelor of Arts (BA), Statistics
2013 — 2017
The University of Chicago Booth School of Business
MBA/MPCS, Entrepreneurship/Entrepreneurial Studies
University Pompeu Fabra
University of Chicago Study Abroad, Western Mediterranean Civilization
2017 — 2017
The London School of Economics and Political Science (LSE)
Finance
2015 — 2015
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