Portfolio · Software engineering
I’m Griffith, a Software Engineer II at Cisco. I work on cloud-managed networking, backend platforms, and developer tools.
Away from work, I build apps for guitar practice, transit, food, and my own infrastructure. These are some of the things I’ve been working on.
Outside the day job
Personal apps and infrastructure, built around problems I run into.
A common foundation for independently deployed personal apps: passkey sign-in, application access grants, reusable session handling, and shared Svelte components.
Includes authorization-code/PKCE sign-in, CSRF protection, service workers, push delivery, and startup telemetry.
An invite-only guitar practice app with private song libraries, flexible goals, group activity, and reminders that respect each person’s timezone.
Offline timers and check-ins use an IndexedDB outbox and idempotent synchronization, preserving the time a practice session actually happened.
A self-hosted e-bike tracker that integrates Apple’s Find My network with an authenticated map and persistent location history.
Rotating P-224 keys, authenticated AES-GCM location reports, and recovery scans retain sightings across downtime and service restarts.
A transit timing app combining BART and Caltrain schedules with real-time overlays, saved routes, and a configurable iPhone widget.
Validated schedule downloads, atomic replacement, persistent caching, and stale-data fallbacks keep it useful when upstream services are unavailable.
A controller that monitors WireGuard and Tailscale health and automatically switches VPN servers, with cooldowns to avoid unnecessary churn.
A persistent network namespace keeps Tailscale running while VPN containers are replaced. Related tools handle SNI routing and selective traffic inspection on trusted devices.
Personal extensions to existing CodexHost and Open Harness installations, making model selection, reasoning controls, and keyboard navigation fit my workflow.
Includes persisted presets, configurable shortcuts, session-aware message editing, and React/TypeScript controls synchronized with the active session.
Something you can try
Dinner, with a little less indecision.
I built Wholemeal because I wasn’t eating enough vegetables and wanted a fun way to decide what to cook. Spin for a protein, carb, and vegetable, save your favorites, and add your own foods.
Professional work
June 2024–Present
Software Engineer II
Cloud-managed networking, backend platforms, and engineering tools. Promoted to Software Engineer II in August 2025.
May 2021–May 2024
Software Engineer Intern
Image-analysis APIs, machine learning pipelines, and autoscaling infrastructure.
May–July 2023
Software Engineer Intern
Java services, concurrency control, and automated AWS deployments.
From the archive
Java · Compilers
A compiler for a custom language, with lexical and semantic analysis and Java or x86-64 assembly output.
Go · Docker
A scheduled Go service that sends a rotating collection of daily messages through Telegram.
Python · PyTorch · Selenium
Content and collaborative filtering experiments combining PyTorch with scraped film metadata.
Python · Automation
An event registration script I built after missing out on yoga classes at my college gym.
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