I work at Smallpdf, where I design and evolve large-scale monetization systems used by millions of users worldwide.
I specialize in:
- 💳 Payment systems and subscription lifecycles
- ⚛️ React and Next.js at scale
- 🔁 TanStack Query and advanced data orchestration
- 🏗 Resilient frontend architecture
- 🧪 Large-scale experimentation and A/B testing
- 📊 Observability, monitoring, and debuggability
- 👥 Technical leadership and engineering management
I focus on building frontend systems that handle real money, real users, and real-world failure scenarios.
Designing and scaling payment flows that convert, recover, and withstand edge cases.
- Multi-step checkout systems
- 3DS and failure handling flows
- Subscription lifecycle design
- Pricing experiments and optimization
- Payment orchestration logic
Building React and Next.js systems that are fast, resilient, and maintainable.
- Advanced TanStack Query patterns
- Error boundaries as observability surfaces
- Retrying more than just fetch calls
- Type-safe architectural enforcement
Reducing mean time to resolution by making systems explain themselves.
- Structured logging strategies
- Frontend failure classification
- Experiment-driven decision loops
I serve as the Stripe Community Builder for Switzerland, helping grow the local payments and developer ecosystem.
If you're building fintech, SaaS, or monetized products, let’s connect.
I founded ZurichJS, Switzerland’s fastest-growing JavaScript community.
We run:
- Monthly meetups
- Workshops
- International speaker events
- Deeply technical community sessions
I organize ZurichJS Conf, a curated single-track JavaScript conference in Zurich built for serious engineers and fun!
- 300 attendees
- World Class International Speakers & Workshops
I speak about:
- Payment orchestration from the frontend
- Chaos engineering for monetization
- Resilient React and Next.js architectures
- Real-world data fetching challenges
- Observability for product teams
🌐 Personal website: https://faziz-dev.com
I mentor engineers on:
- Moving from mid-level to senior and staff
- Architecture thinking
- Payments and monetization expertise
- Becoming conference speakers