Product-Focused Backend Engineer • SaaS Development • Real-Time & Event-Driven Systems
Occasional debugger of production fires 🔥
I build backend systems that power SaaS products — especially features that need to stay reliable under real-world usage.
My focus is on:
- 🚀 SaaS platform development (APIs, multi-tenant databases, integrations)
- ⚙️ resilient API & webhook connectors (retries, signature verification)
- ⚡ real-time & event-driven systems (WebSockets, async queues)
- 📊 telemetry & auditing systems (log deduplication, SLA compliance)
- 🛡️ Resilient architectures (lease locks, checkpoint recovery, DLQs)
I care less about “perfect architecture” and more about systems that work reliably in production when things get messy.
Product engineering · System Design · Scalability · Reliability · Clean architecture (when possible)
- 💼 LinkedIn: https://www.linkedin.com/in/angeloarcillas
- 🌐 Website: https://angeloarcillas.pages.dev
- 🐙 GitHub: https://github.com/zerexei
- 📧 Email: angeloarcillas64@gmail.com
Thanks for visiting! Feel free to reach out if you want to talk about tech, systems, or anything interesting.
It’s great to meet you 👋



