// 00 — index

Senior AI & Frontend Engineer building full-stack AI applications

I'm Charl Roux. I build full-stack AI applications: retrieval pipelines, streaming interfaces, and the production engineering that keeps them reliable. DocLocal is the clearest example, Angular and Nx on the frontend, Python and FastAPI on the backend. Before that, 7 years shipping production Angular platforms, the last four as frontend team lead on an enterprise cybersecurity SaaS platform, where I took the codebase from Angular v2 to v19 without a rewrite or feature freeze and cut the main bundle from 400 KB to 250 KB.

LOC: Ann Arbor, MI
TZ: EDT · UTC−4
EXP: 7 years
STATUS: full-time · on-site · hybrid · remote

Get in touch See the work

now

available full-time · on-site · hybrid · remote · US-authorized · no sponsorship · Ann Arbor, MI hiring

currently DocLocal. PDF question answering where every answer cites a passage you can check. Angular 21 and Nx on the frontend, Python 3.12 and FastAPI on the backend running on NVIDIA NIM, with streamed answers, mid-stream cancellation and session recovery. focus

shipped an Angular v2 → v19 modernization of a cybersecurity SaaS platform — no rewrite, no feature freeze, main bundle 400 KB → 250 KB (−37.5%). prod

architecture Angular Signals + OnPush change detection — fine-grained reactivity, no unnecessary re-renders. pattern

background 7 years shipping production frontend — four as frontend team lead on an enterprise cybersecurity SaaS platform, two and a half in agency delivery across 10+ production apps, and since late 2025 building AI applications independently. exp

01Featured work

One project, built end to end: retrieval-augmented document question answering, with the streaming, failure handling and citation UI that make an AI answer worth trusting.

DocLocal interface: a question about a synthetic Falcon rover manual answered with a numbered citation, and the cited passage highlighted in the PDF viewer alongside

UI demo · mock-backed replay

// 01 — featured live prototype

DocLocal

Angular· TypeScript· WebGPU· Python· FastAPI· NVIDIA NIM

PDF question-answering with retrieval-augmented generation (RAG): the passages most relevant to each question are retrieved from the document and sent to the model with it. Every answer cites its source — click a citation to jump to the highlighted passage in the PDF and check it yourself.

The live prototype runs entirely in the browser: Angular 21 and Nx, Transformers.js embeddings in a Web Worker, and WebLLM inference on WebGPU, with a SharedWorker so every open tab shares one model. In development: a Python/FastAPI backend on NVIDIA NIM cloud models — no model download or local GPU — with streamed answers, mid-stream cancellation, and session recovery. That path sends document text and questions to NVIDIA.

Live prototype Frontend source

// regression

−50%

Per-release regressions, roughly halved by Cypress and Jest suites wired into the DevSecOps pipeline.

// migrated

v2→v19

Angular versions, migrated incrementally on a live cybersecurity SaaS platform — no rewrite, no feature freeze.

02Skills & stack

A pragmatic, opinionated stack — picked because it scales for teams, not because it's fashionable.

$tree ./stack --years frontend/

├── angular·······v2 → v19, signals, standalone 7y

├── typescript·····strict, generics, type utils 7y

├── rxjs···········streams, custom operators 7y

├── ngrx···········store, effects, entity 5y

├── html···········semantic, WCAG 2.1 7y

├── css············grid, animations, arch 7y

└── web workers····off-main-thread compute 3y

$tree ./stack --platform platform/

├── ci-cd··········github actions, docker 4y

├── nx·············monorepos, affected graph 3y

├── module-fed·····runtime micro-frontends 3y

└── fastapi········python, rag api (doclocal) now

quality/

├── cypress········e2e, visual regression 5y

├── playwright·····e2e, workers, streamed ui now

├── jest···········unit, TestBed 5y

└── accessibility··aria, keyboard, axe 6y

approach/

├── reactive·······streams over imperative

├── strict-types···types as documentation

└── a11y-first·····a baseline, not a polish

// 03 — contact

Let's talk.

I'd love to hear about your project and how I could help. Drop a note via the form, or reach me directly — I read everything and reply within a day or two.

charlit641@gmail.com linkedin.com/in/charl-roux github.com/DevelopStudios