Nine
ActiveA hospitality intelligence platform designed to help restaurants improve real-time operations, inventory forecasting, and revenue growth.
Next.jsTypeScriptNode.jsPostgreSQLPrismaRedisTailwind CSS
2026View Project→
VICTOR YUNUSA
Founder, Product Builder
& Data Scientist.
I build technology products, explore artificial intelligence, and work on ideas that solve meaningful problems.
SELECTED WORK
Featured Companies & Engineering Systems
A selection of technology platforms and products I have founded, architected, or led.
Letlify
ActiveA modern online appointment booking and scheduling platform offering frictionless calendar synchronization, customizable intake workflows, and high-performance booking widgets.
Next.jsTypeScriptTailwind CSSNode.jsPostgreSQLRedisStripe
2025View Project→
VitalPay
CompletedHealthcare payment infrastructure and digital claims clearinghouse designed to expedite provider reimbursements and patient billing transparency.
TypeScriptReactNode.jsFastifyPostgreSQLRedisHL7 / FHIR Standards
2024View Project→
IYAPAY
CompletedCross-border payment orchestration engine enabling seamless multi-currency settlements and digital commerce infrastructure across African markets.
TypeScriptNode.jsReactPostgreSQLRedisAWSGraphQL
2023View Project→
LATEST WRITING
Essays, Architecture & Startup Lessons
Reflections on product engineering, intelligent systems, and software durability.
·10 min read
The Engineering Behind Modern Online Booking: Concurrency, Timezones, and Frictionless Scheduling
An architectural deep dive into why calendar scheduling is deceptively difficult to build—from distributed locking and IANA timezone math to bi-directional synchronization and how Letlify approaches frictionless booking.
·10 min read
Designing Core Banking Applications: Architecture, Ledgers & Distributed Systems
A comprehensive architectural blueprint for engineering an enterprise-grade Core Banking System with microservices, immutable double-entry ledgers, Kafka event streaming, and regulatory compliance.
ABOUT
I build technology products and explore the future of intelligent systems.
I'm Victor Yunusa, a technology entrepreneur, product builder and data scientist focused on creating digital systems that solve meaningful operational bottlenecks. My background spans full-stack architecture, fintech rails, applied machine learning, and venture creation.