Jheremiah Figueroa

• Built and run the team's self-hosted CI/CD and observability platform (Jenkins, Prometheus, Grafana, Loki, Alertmanager on Docker Compose) across ~20 on-prem Linux servers. Manual SSH deploys became one-click parameterised pipelines.
• Designed per-instance health monitoring that needed zero application changes: HTTP probes plus host metrics, with alert rules for downtime, disk, memory, CPU and slow responses.
• Technical lead and code reviewer across the team's projects, and lead developer on a multi-tenant enterprise SaaS (Angular, Node/Express, MySQL, Redis/BullMQ job queues, Socket.IO progress).
• Introduced a stage-gated SDLC (spec → build → SIT → UAT → release → ops) with document templates, a generator, and a gap map across the team's systems.
• Wrote specs and ran architecture reviews, including a multi-tenant modernisation of a legacy portal and an IT service-management system.
• Built a local, GPU-accelerated transcription pipeline (faster-whisper on CUDA) so confidential meeting audio never leaves company hardware.

Angular · Node.js · Express · TypeScript · MySQL · Redis · BullMQ · Socket.IO · Jenkins · Prometheus · Grafana · Docker · Nginx · Linux

• Developed enterprise applications with AngularJS on the front end and Node.js / Express services behind them.
• Implemented responsive interfaces and RESTful APIs inside a large delivery organisation's review and release process.

AngularJS · Node.js · Express · REST

• Built backend services with Node.js and PostgreSQL, focused on performance and security.

Node.js · PostgreSQL

• Built single-page application features in Vue.js on a Ruby on Rails back end, and contributed to its GraphQL API.

Vue.js · Ruby on Rails · GraphQL

A self-hosted Discord alternative: chat, voice, camera and screenshare.

197 server checks in 7 suites · 83/83 end-to-end tests · Restore drill passed

Rust · axum · Tokio · sqlx · PostgreSQL · LiveKit · WebRTC · Tauri 2 · React · TypeScript · Docker · Caddy

A multi-tenant AI shopping assistant that answers buyers in Taglish from each seller's own catalog.

Live in production · Abuse and IDOR tested · Bounded tokens per call

Next.js · TypeScript · Tailwind CSS · OpenRouter · Gemini 2.5 Flash · Docker · Caddy

A home-training app for hybrid fitness racing, driven by a tested, rule-based training engine.

260+ engine tests · Two-model review on every slice · Rulebook-driven, not hard-coded

Expo · React Native · TypeScript · expo-router · SQLite · Jest

An offline-first point of sale for a specialty café: tablet app, sync server, receipt and label printing.

34/34 server database tests (Postgres 16) · 47/47 tablet-app tests, incl. simulated printers · Reproducible deploy stack

Flutter · Dart · Next.js · PostgreSQL · Docker Compose · ESC/POS · Bluetooth LE

A shadow-projection puzzle game built in Flutter: 247 levels and an in-app purchase.

107 tests · 247 levels, all checked solvable · macOS CI on Codemagic

Flutter · Dart · CustomPainter · RevenueCat · Codemagic

A consent-first meeting recorder for meetings you're physically in.

462 tests · On TestFlight (iOS) · Audio deleted after transcription

Flutter · Dart · Whisper (speech-to-text) · Sign in with Apple · RevenueCat