The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Back to feedPost
šš-ššØš°šš«šš šš«ššš¢š§š šš§šš„š²šš¢šš¬ šš„ššššØš«š¦ | šš²šš”šØš§, š
šš¬šššš & ššš
šš² š«šØš„š: Python Backend Engineer focused on AWS serverless architecture
šš«šØš£ššš ššš¬šš«š¢š©šš¢šØš§:
I built a serverless backend for an AI-driven trading platform handling real-time market data and analytics. I used AWS services like Lambda, API Gateway, RDS, and S3 to create a system that scales without manual infrastructure management. I designed pipelines for ingesting and processing live data to support trading signals and sentiment analysis. My focus was on keeping latency low, handling high concurrency, and ensuring the platform remained stable for global users.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Related posts
We've been building something for a while, and it's finally time to share it.
Meet Zupa, an AI tool that helps you write LinkedIn and social media posts that actually sound like you.
Most people know they should post more. The hard part is sitting down and turning a rough idea into something worth reading. Zupa takes that idea and shapes it into a post built around what makes people stop scrolling and engage.
It's made for founders, marketers, agencies, and anyone building a personal brand who doesn't have hours to spend writing.
Here's a quick look at what we've built š
We're opening early access now, and it's free to try. If you want a look, check out https://www.zupapost.ai/
Honest feedback is welcome too. That's how we'll make it better.
Really like the idea of using psychology to help people rewrite their posts! The UI feels thoughtful and fits the concept really well. Itās a focused tool I could see being useful in everyday writing, especially for making posts more engaging. How long did it take you to go from the initial idea to the finished website?
ā¢ Sep 25
Project Title
Async E-Learning Platform Backend
Overview
An asynchronous REST API and real-time WebSocket backend built with FastAPI, Fapix, and Tortoise ORM. Features strict Role-Based Access Control (RBAC), live multi-room chat, assessment workflows, and an automated async test suite.
Key Deliverables
Role-Based Security: Built fine-grained RBAC permission guards across 4 user roles (Admin, Supervisor, Teacher, Student).
Real-Time Communication: Designed multi-room WebSocket chat channels using structured JSON payload envelopes.
Database & Testing: Implemented async data persistence with Tortoise ORM and built an automated test suite using pytest-asyncio and httpx.
Live Demo & Source Code
Live App: https://lms-4475.de
Most agent bugs are invisible: the agent loops, drops context or calls a tool it shouldn't, and all you see is a wrong answer. I wrote an agent harness from scratch in Python ā loop control, context compaction, permissioned tools, sub-agents ā and Harness Studio, a web app that replays every run: one lane per agent, each event explained, and the exact context each agent held when it stopped.
