Senior Full-Stack & Systems Engineer · Principal Systems Architect
Cyrus Espiritu
Architecting resilient distributed backends, enterprise multi-tenant platforms, and open-source AI tooling. Founder of StaffSuite and creator of Open-Labor-PH & ZeroDrop.
What I do
See all skillsSystems & Architecture
Distributed systems, Tokio/Axum backends, gRPC/Protobuf contracts, low-latency microservices, and zero-downtime Strangler Fig migrations.
Enterprise Full-Stack
Multi-tenant B2B SaaS platforms with Next.js, PostgreSQL, and Prisma ORM — mission-critical payroll engines operating at 99.9% uptime.
Applied AI & LLM Systems
Deterministic document extraction in Rust, RAG benchmarking and evaluation suites, multi-agent process supervisors, and prompt safety boundaries.
Featured work
View allStaffSuite
HR Tech / SaaS
StaffSuite — launched as HipStaff, now shipping at staffsuite.asia — is payroll & HR SaaS live across the Philippines. It cuts tax-season processing by 90% and saves HR teams 80+ hours a year, automating 13th-month pay, government contributions (SSS, PhilHealth, Pag-IBIG), BIR Form 2316, and DOLE-compliant leave, with an employee self-service portal and biometric attendance.
Open-Labor-PH
Legal Tech / AI
Open-source infrastructure to structure, validate, and democratize Philippine labor law for local AI. Converts decades of DOLE Orders into machine-readable JSON datasets with an RAG evaluation benchmark suite. Built in Rust for high-throughput ingestion and deterministic verification.
ZeroDrop
Privacy / Terminal App
An end-to-end encrypted terminal chat app. Messages are encrypted client-side (X25519 + ChaCha20-Poly1305) and relayed by a 'dumb broadcast' server that stores and knows nothing. Features safety-number verification, self-destructing messages, and group channels.
Let's build something
Have a product, role, or partnership in mind? I'm always open to a conversation.
Get in touch