Senior Full-Stack Developer (React + Python)

Senior Full-Stack Developer (React + Python)

Company: Unlocking Tech

Type: Full-time / Contract

About Us

Unlocking Tech is building the next generation of AI-powered communication platforms for SMEs. Our upcoming SaaS product is a modern omnichannel hub, that centralizes WhatsApp, voice calls, SMS, email, and AI assistants in one powerful interface.

We’re looking for a Senior Full-Stack Engineer who’s passionate about scalable architectures, automation, and crafting clean, maintainable code. You’ll play a central role in transforming our base into a modular SaaS platform with integrations like Vapi, Clerk, Stripe, HubSpot, and Twilio.

What You’ll Do

• Lead the development of our omnichannel SaaS platform
• Re-architect backend modules in Python/FastAPI to decouple and scale integrations
• Develop modern front-end components in React (TypeScript) for the operator dashboard
• Integrate Stripe for billing, Clerk for authentication, and Vapi/Twilio for voice
• Design and maintain REST and WebSocket APIs for real-time conversations
• Collaborate on DevOps (Docker, Portainer, GitHub Actions) to ensure clean CI/CD pipelines
• Contribute ideas for UX, performance, and AI-driven automation features

Tech Stack

• Frontend: React, TypeScript, Tailwind, WebSocket
• Backend: Python (FastAPI), PostgreSQL, Redis, Celery
• DevOps: Docker, Portainer, GitHub Actions
• Integrations: Vapi, Clerk, Stripe, Twilio, HubSpot, Make/n8n

What We’re Looking For

• 5+ years of full-stack development experience
• Strong knowledge of React and Python (FastAPI or Django REST)
• Experience integrating 3rd-party APIs and building SaaS products
• Good understanding of microservice architecture and event-driven systems
• Comfortable with Dockerized environments and CI/CD pipelines
• Fluent in English; Portuguese is a plus

Why Join Us

• Be part of a foundational project that will evolve into a global SaaS
• Work directly with the founder/CTO, contributing to architecture decisions
• Flexible remote culture with high technical standards
• Opportunity to grow into Tech Lead or Product Owner role as we scale

💡 If you love building robust products and want to be part of an early-stage AI-driven SaaS journey, we’d love to talk.

👉 Apply by sending your LinkedIn profile or GitHub to work@unlockingtech.com

with the subject “Senior Fullstack (React + Python)”.