John AlynQuantitative trading algorithms + production-grade systems.
I design and build robust backend systems, trading infrastructure, and AI-assisted applications with a focus on correctness and performance.
Selected work
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Production project hosted on GitHub.
ghoasis.github.io
Gentle Hands Oasis website. A home health care business.
Engineering philosophy
Built for production reality
I design systems to survive traffic spikes, bad deploys, and incomplete requirements. That means strict interfaces, clear ownership, and instrumentation that makes failures obvious.
Capabilities
Execution across the stack
Production checklist
What I ship every time
If it isn't operable, it isn't done. Each delivery includes the systems needed to run safely in production: testing, monitoring, and clear ownership.
Availability
99.9%+
Service health with monitored SLIs/SLOs.
Performance
<200ms
Critical endpoint latency under load.
Change safety
CI/CD
Automated tests, previews, and rollbacks.
Operations
On-call
Runbooks, alerts, and incident reviews.
Deliverables
Architecture diagrams, PRDs, runbooks, dashboards, and production-ready code.
Preferred stack
React, Next.js, TypeScript, Node, Postgres, Redis, AWS, Terraform, GitHub Actions.
Resume
Full timeline, impact, and stack
This is the complete record of roles, outcomes, and the systems I've shipped in production.
Snapshot
Full-stack, cloud, and platform delivery with ownership of reliability and performance.
Core domains
Internal tools, customer-facing platforms, data workflows, and ops tooling.
Notes
Field notes from production
Short writes on reliability, system design, and operational tradeoffs I've learned firsthand.
Read notesRecent topics
Designing SLOs that the team will actually use.
Migration plans that don't break production.
How to ship safely with small teams.
Let's build something resilient.
Open to full-time roles, consulting, and high-impact collaborations.
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