Keith J. Hetrick

Bellweather Studios · Remote

• Build and maintain Bellweather's C++/JUCE product line across VST3, AU, AAX, and CLAP on macOS, Windows, and Linux. Pressure simplifies dynamics decisions, Ceiling controls true peaks transparently, and Barometer provides standards-based metering. Own architecture and DSP through licensing, delivery, support, and compatibility-preserving updates.
• Replaced an always-on ECS and load-balancer backend with an on-demand Lambda runtime after proving production parity and rollback. Comparable runtime and ingress cost fell by more than 99% in the first complete post-cutover month. Managed AWS and DNS through OpenTofu using Terraform-compatible plans, locked remote state, and drift checks.
• Converted plugin releases from a manual confidence problem into a signed, repeatable promotion process with format-native validation, rendered-audio regression checks, notarization, and explicit rollback evidence.
• Used mutation testing to expose a DC-offset detection blind spot, then added a regression check that blocks that fault class before release. Built lock-free state transfer and sanitizer-backed checks around the real-time path.
• Designed and operate a cross-language licensing platform connecting C++ plugins to TypeScript services. Shared Zod contracts keep entitlements, device activation, updates, installers, and support consistent across apps, with independent product and backend recovery.

Confidential consumer-services agency · Remote

• Turned a shared content workflow into a tenant-scoped operations system with explicit permissions, approvals, audit history, and separate internal and public views, reducing the risk of cross-client disclosure or untraceable edits.
• Removed the live database from the public visitor path by publishing isolated static client deployments, while preserving independent promotion and rollback history for each client.
• Opened shared client context to authenticated tools through REST and OAuth 2.1 without exposing internal fields; parity checks keep each consumer on the same approved public projection.
• Made design handoff reproducible by carrying selected concepts and recorded client feedback into versioned build briefs, while keeping technical completion separate from production approval.

West End Designs · Remote

Owned internal authentication and content-production systems from data model through deployment, replacing fragmented operational work with shared, supportable workflows.