FSFAIZAN SAIYEDENGINEERING / 2026
PORTFOLIO / 2026BACKEND · SYSTEMS · FULL-STACKAPI DESIGN · DATA · ASYNC SYSTEMS
ENGINEERING-LED PORTFOLIO

I build the parts of a product that have to keep working.

I'm Faizan Saiyed — a full-stack engineer focused on backend APIs, realtime systems, asynchronous workflows, data, and the interfaces that make those systems useful.

View selected work↘
18FULL-STACK PROJECTS
06MERGED PRS
02FREELANCE BUILDS
FS / 01PROFILE
Faizan Saiyed
FASTAPI
REALTIME
POSTGRES
FAIZAN SAIYEDFULL-STACK ENGINEER
ENGINEERING SIGNAL ONLINE
APISTATEJOBSSTREAMSVERIFICATION
01 / SELECTED WORKENGINEERING CASEBOOK

Projects presented as systems, not screenshots.

01 / ASYNC MEDIA SYSTEM SOURCE AVAILABLE
01

FrameFlux

Keep heavy media work out of the request path.

Uploads and media transformations become explicit job lifecycles with durable state, validation, progress, retries, and cancellation.

FastAPIPostgreSQLRedis / ARQFFmpeg
Backend repo ↗Frontend repo ↗
ARCHITECTURE / ASYNCFLOW 01
BROWSER
FASTAPI
STATEPOSTGRES
UPLOAD
VALIDATE
REDIS / ARQ
WORKER
FFMPEG
RESUMABLE STATEQUEUE + PROGRESSPROCESSING
THE INTERESTING PART

A resumable upload is a state machine. A media transform is a job lifecycle. The architecture makes both visible.

02 / REALTIME OBSERVABILITY SOURCE AVAILABLE
02

Telemetry

Give live system state a model the interface can trust.

Synthetic telemetry flows through one backend-owned model for anomaly detection, persistence, alert lifecycle, authenticated streaming, and a live dashboard.

FastAPIWebSocketsPostgreSQLReact / TypeScript
Backend repo ↗Frontend repo ↗
RUNTIME / REALTIMEFLOW 02
SIGNAL
TELEMETRY MANAGER
STATEANOMALY + ALERTS
DETECT
PERSIST
POSTGRES
WEBSOCKET
DASHBOARD
SYNTHETIC INPUTBOUNDED PERSISTENCELIVE STREAM
THE INTERESTING PART

The frontend is not the authority. The backend owns alert lifecycle, roles, persistence, simulation state, and the live stream.

SEE THE SOURCE, NOT A MOCKUP.Browse repositories ↗
02 / OPEN SOURCEMERGED CONTRIBUTIONS

Small changes, merged into software beyond my own repos.

A record of merged pull requests across developer tools, SDKs, and user-facing software. Each card opens the original contribution.

MERGED · 23 OCT 2026
Sentry JavaScript SDK

feat(cloudflare): instrument Workers KV bindings

Adds instrumentation for Cloudflare Workers KV bindings in the JavaScript SDK.

View merged pull request
MERGED · 22 OCT 2026
TrustFlow SDK

Expose isWalletRejection from the wallet entry point

Makes the wallet-rejection helper available from the SDK entry point.

View merged pull request
MERGED · 16 OCT 2026
Sentry JavaScript SDK

feat(browser): add LoaderSentry type

Introduces the LoaderSentry type in the browser SDK.

View merged pull request
MERGED · 07 OCT 2026
Sentry Python SDK

refactor: move FastAPI active thread tracking into Starlette

Moves active-thread tracking from the FastAPI-specific integration to Starlette.

View merged pull request
MERGED · 30 SEP 2026
Home Assistant Frontend

Fix light color temperature gradient in RTL

Corrects the light color-temperature gradient for right-to-left layouts.

View merged pull request
MERGED · 30 JUL 2025
Awesome Claude Agents

Modernize React Component Architect agent for React 19/Next.js 14

Reworked the React Component Architect agent definition to emphasize React 19, the Next.js App Router, Server Components, and current UI patterns.

Developer toolingMarkdownReact / Next.js guidance
View merged pull request
SHIPPED ACHIEVEMENTS

My Contributions, Shipped in Real Software

Code I've contributed to established open-source projects, now included in official releases. Each achievement links to the published release.

SENTRY JAVASCRIPT SDK SHIPPED

v11.10.0 · Workers KV instrumentation

Workers KV tracing instrumentation, with @faizansaiyed123 included in the release contributor credits.

Official release PR #25488
SENTRY JAVASCRIPT SDK SHIPPED

v11.9.0 · LoaderSentry type

TypeScript type export for the CDN loader, included in the release changelog and contributor credits.

Official release PR #25357
SENTRY PYTHON SDK SHIPPED

v2.72.0 · Starlette thread tracking

Moved FastAPI active-thread tracking into Starlette; the release notes credit the PR author.

Official release PR #7825
HOME ASSISTANT FRONTEND SHIPPED

20260930.0 · RTL light color gradient

Fixed the light color-temperature gradient for right-to-left layouts; the release identifies this as a first contribution.

Official release PR #54468
03 / FREELANCE WORKCLIENT PROJECTS

Built for real client needs.

Two client-facing websites, presented with genuine captures and linked directly to their live destinations.

Captured Jeca Homes website previewREAL ESTATE · CLIENT BUILD
CLIENT PROJECT01 / 02

Jeca Homes

A Florida real-estate website centered on property discovery, local-area browsing, and direct contact with the agent.

ReactTypeScriptTailwind CSSVite
Visit live website
Captured PrintOscar storefront previewE-COMMERCE · CLIENT BUILD
CLIENT PROJECT02 / 02

PrintOscar

An online storefront for custom trophies, medals, plaques, and recognition products, with product-category browsing and checkout integrations.

ReactFastAPIPostgreSQLStripe / PayPal
Visit live website
04 / PERSONAL PROJECTSFULL-STACK PROJECT INDEX

Product interfaces, connected to real systems.

Explore the full-stack work below. Available live previews link to deployed frontends; source links lead to the repositories. FrameFlux uses an architecture diagram, Product Analytics uses a genuine database-backed walkthrough screen because its current deployment cannot reach the API, and LedgerPulse uses a repository screenshot because no live deployment URL was verified.

Showing all 18 projects

FrameFlux architecture diagram showing browser upload, FastAPI, PostgreSQL state, Redis ARQ, workers, and FFmpegARCHITECTURE DIAGRAM
ASYNC MEDIA / SYSTEMS01 / 18

FrameFlux

Media uploads, validation, durable job state, queued workers, FFmpeg transformations, progress, retries, and cancellation kept out of the request path.

Next.jsReactFastAPIPostgreSQLRedis / ARQFFmpeg
Frontend repo Backend repo
Sayphora cosmetics and skincare storefront screenshotLIVE SCREEN
FULL-STACK COMMERCE03 / 18

Sayphora

A cosmetics storefront with product discovery, cart pricing, orders, inventory, reviews, loyalty rewards, AI beauty tools, and an admin console.

ReactTypeScriptExpressPostgreSQLE-commerceAI tools
Live app Source repo
Product Analytics analytics overview with persisted event and user metrics from the project walkthroughWORKFLOW SCREEN
PRODUCT DATA09 / 18

Product Analytics

A self-hosted analytics workspace for event trends, funnels, retention, user journeys, sessions, people, cohorts, saved reports, and dashboards.

ReactTypeScriptFastAPIPostgreSQLAnalytics
Frontend repo Backend repo
LedgerPulse public landing-page screenshot from the frontend repository walkthroughREPOSITORY SCREENSHOT
INVOICE / FINANCE WORKFLOWS18 / 18

LedgerPulse

An invoice and expense-management product with customers, vendors, payments, recurring invoices, and organization-aware access backed by a Flask API and PostgreSQL.

ReactViteFlaskPostgreSQLFirebase Auth
Frontend repo Backend repo
18 / 18 PROJECTS INDEXEDMore on GitHub
05 / SYSTEMS THINKINGTHE REPEATED MOVES

The way I approach engineering is visible in the projects above.

01

Separate expensive work.

Long-running operations become explicit lifecycles with visible state, retries, cancellation, and failure boundaries.

02

Keep authority on the backend.

The interface can guide a user, but security, state transitions, and system rules belong where they can be enforced.

03

Validate before you spend.

Reject malformed or unsafe input at the edge before it reaches an expensive or sensitive execution path.

04

Verify from the outside in.

Unit tests prove isolated behavior; integration and browser tests ask whether the whole thing behaves as a user sees it.

/

I like systems that leave fewer surprises behind them.

06 / STACKTOOLS WITH DIRECT EVIDENCE

Technologies used across the work.

BACKEND

Python · FastAPI · Flask · Pydantic · SQLAlchemy · Alembic

APIs / validation / persistence
SYSTEMS

PostgreSQL · Redis · ARQ · WebSockets · FFmpeg · Uvicorn · Docker

state / jobs / realtime / processing
AI & RETRIEVAL

Ollama · pgvector · embeddings · reranking

local inference / knowledge retrieval
FRONTEND

React · Next.js · TypeScript · Vite · Tailwind CSS

product interfaces / dashboards
VERIFICATION

Pytest · integration tests · Playwright · GitHub Actions

behavior / browser / automation
07 / CONTACTOPEN CHANNEL

Bring a real problem.

I’m looking for backend / full-stack engineering opportunities and technical project conversations where the work has substance.

DIRECTsaiyedfaizan842@gmail.com ↗
GitHub ↗LinkedIn ↗
Email opens your mail client. No third-party form service.