Python 3 • Flask • FastAPI • Supabase PostgreSQL • REST APIs

Python Backend
& REST API Engineering.

I architect scalable, modular Python backend services that power SaaS web applications, integrate artificial intelligence models, handle high-throughput webhooks, and interface with secure relational databases. Grounded in solid software engineering patterns.

Discuss Your Backend → Hire on Upwork ↗
Explore Architecture ↓
Core Standards: Clean Architecture Type Hinting & Pydantic JWT & RBAC Auth Docker Containerization
hasnain@system:~$ python --version
$ runtime: "Python 3.11+ / CPython"
$ api_frameworks: ["Flask", "FastAPI"]
$ persistence: "Supabase (PostgreSQL), SQLite"
$ ai_tooling: ["OpenAI SDK", "Whisper", "LangChain"]
$ flagship_api: "Hukum AI Multi-Tenant Core"
$ testing_sdlc: "PyTest, OpenAPI Validation"
$ status: ● Accepting Backend Contracts
Backend Expertise

Python Capabilities & Production Tooling

From designing RESTful endpoints with clean separation of concerns to handling long-running background tasks.

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Flask & FastAPI REST Architectures

Clean Blueprint-driven application design, custom exception handlers, CORS configuration, dependency injection, and automatic OpenAPI documentation generation.

Flask Blueprints FastAPI Pydantic
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Authentication & Security Middleware

Role-Based Access Control (RBAC), secure bcrypt password hashing, JWT token rotation, rate-limiting guards via Redis, and strict input validation.

JWT Tokens RBAC Rate Limiting
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Database Engineering & Supabase

Relational schema design, SQL migrations, index tuning, foreign key constraints, and Supabase PostgreSQL Row-Level Security (RLS) integration for strict tenant isolation.

Supabase PostgreSQL SQLAlchemy
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AI SDK & Model Integration

Directly embedding LLM capabilities into Python backends: structured output parsing, dynamic prompt composition, streaming completions, and vector embeddings calculation.

OpenAI SDK Anthropic API RAG Embeddings
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Background Workers & Microservices

Offloading heavy processing from web threads into asynchronous queue workers: processing video stems, transcribing audio with Whisper, and batch data migrations.

Async Workers Whisper FFmpeg
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Linux & Cloud Deployment

Deploying production Python APIs to DigitalOcean Droplets and Ubuntu servers behind Nginx reverse proxies with Gunicorn, systemd service supervision, and SSL certificates.

DigitalOcean Gunicorn Nginx
Production Projects

Production Python Codebases

Proven systems demonstrating clean Python software engineering in real products.

Flagship SaaS Core ● Live in Production
2026

Hukum AI Backend Engine (Flask + Supabase)

Multi-tenant SaaS REST API built in Flask providing client authentication, subscription billing tracking, dynamic system prompt overrides, and WhatsApp webhook routing.

Engineering Highlights:
  • Architected REST endpoints connecting React admin dashboards to Supabase PostgreSQL with strict RLS enforcement.
  • Built document upload parser converting client FAQ PDFs into semantic prompt chunks for instant chatbot consumption.
  • Handled high-volume WhatsApp webhook bursts with zero connection drops using asynchronous processing queues.
Python 3 Flask Supabase (PostgreSQL) WhatsApp Cloud API DigitalOcean
https://hukum.tech
Technical Case Study
R&D Product ● US Client Architecture
2026

AI Video Remix Engine Microservice

Automated multimedia processing engine that ingests video URLs, extracts audio stems, transcribes spoken words via Whisper, and analyzes script pacing for automated remixing.

Engineering Highlights:
  • Engineered automated audio-video demuxing workflows with FFmpeg and Python subprocess management.
  • Integrated Whisper transcription with word-level timestamp generation for synchronized subtitle rendering.
  • Constructed modular parallel queue pipelines to benchmark generative video endpoints (Veo 3, Kling, Luma).
Python Microservices Whisper AI FFmpeg Gemini API
R&D Architecture
Case Study
Hire Python Engineer

Build Your Python Backend Today

Looking for a clean, tested Python REST API or AI integration? Get in touch for an engineering proposal.

Direct Channels

Work with milestone escrow on Upwork, packaged gigs on Fiverr, or direct client agreements.

✉️

Email

hasnainaltaf30@gmail.com
📱

WhatsApp Direct

+92 336 2478759
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