Senior Full-Stack Engineer (Python / React, AI-powered Video Platform)

About the Project

We’re building a cutting-edge AI-powered video platform that aggregates and processes content from multiple social media sources. Users can interact with video data through context-aware search, Retrieval-Augmented Generation (RAG), and LLM agent orchestration.

You’ll join a small, focused team working closely with the CTO/founder, shaping the product’s technical foundation and bringing innovative AI-driven experiences to life.

Tech Stack

Backend: Python (FastAPI), Node.js / TypeScript

Frontend: React, Next.js, Tailwind CSS

Cloud: AWS Lambda, API Gateway, Cognito, S3, DynamoDB, OpenSearch

Architecture: Serverless, event-driven design

AI Integration: RAG, LLM agents, contextual search

Your Role

As a Full-Stack Engineer, you’ll drive end-to-end development - from backend APIs and AI integrations to frontend features and UI delivery. You’ll collaborate directly with AI architects, product managers, and designers to craft scalable, high-performance systems.

Responsibilities

• Develop and maintain backend services in Python (FastAPI or similar)
• Create and deploy serverless APIs on AWS (Lambda, API Gateway)
• Implement secure user authentication (AWS Cognito) and cloud storage (S3)
• Integrate AI-powered features (RAG, LLM agents, contextual search)
• Parse and process video content and metadata from social media
• Build responsive and performant interfaces with React / Next.js / TypeScript
• Implement video display, search, and interaction components
• Collaborate with product and design teams to refine user experiences

• Contribute to infrastructure, CI/CD, and performance optimization

   

What We’re Looking For

• 4+ years of professional software development experience
• Strong skills in Python (FastAPI preferred)
• Solid experience with React, Next.js, and TypeScript
• Proficiency with AWS services (Lambda, Cognito, S3, API Gateway, DynamoDB)
• Ability to design and scale RESTful APIs
• Understanding of serverless and event-driven architectures
• Experience integrating with or building AI/ML-powered features (RAG, LLMs, etc.)

• Good communication skills and a proactive, startup-ready mindset

   

Nice to Have

• Experience with video parsing, streaming, or playback
• Familiarity with infrastructure-as-code or DevOps (CI/CD pipelines)
• Exposure to authentication and analytics systems (AWS Cognito, OpenSearch)
• Understanding of SEO, SSR/SSG rendering models in Next.js

Being a part of 3asoft means having

• High level of flexibility and freedom
• p2p relationship with worldwide customers
• Competitive compensation paid in USD
• Fully remote working