Full-Stack + Mobile Engineer (AI Consumer Apps)

New Today

Overview

Title: Full-Stack + Mobile Engineer (AI Consumer Apps)

Location: London • Full-time

Company
Magic Group, founded by Julius Dein, is an entrepreneurial team that moves fast. Julius has built one of the biggest online followings in the world, 72M+ followers and billions of views across platforms. This year we launched multiple new channels that together drove hundreds of millions of views, proving we know how to capture attention at scale.

Now we’re turning that reach into product distribution. We are looking to build the next set of viral digital apps - that’s why we’re hiring you! You’ll be the person who turns ideas into live products, not just maintain existing ones.

You’ll work alongside a team with deep experience in product development, growth, and storytelling, giving you the distribution most indie builders dream of.

Why this role
This is a builder’s seat at the table. You’ll own core builds end-to-end, decide what ships, and shape the tech culture from day one. Small, senior, high-trust team.

Responsibilities

  • Build web and mobile features from prototype to production
  • Ship to App Store and Google Play, run release trains
  • Set up analytics, crash reporting, push, and IAP
  • Design and ship APIs, REST or GraphQL
  • Handle auth, webhooks, pagination, rate limits, versioning, monitoring
  • Use LLMs in production: OpenAI SDKs, LangChain or similar
  • Implement embeddings, vector search, simple RAG, prompt evals
  • Work with growth and creative to run fast tests, ship weekly
  • Keep code simple, readable, and tested where it matters

What makes you a fit?

  • You’ve shipped production mobile apps (share store links)
  • You’ve designed or extended APIs, not only called SDKs
  • You’ve built with LLMs and can show your eval approach
  • You move fast with care and have strong product taste
  • You love building, think like an owner, and handle ambiguity

Toolkit you likely use

  • Frontend: React, Next.js, Tailwind
  • Mobile: React Native or Flutter, or native iOS/Android
  • Backend: Node.js, TypeScript, Firebase/Supabase/Postgres
  • AI: OpenAI SDKs, LangChain (or similar), Pinecone/Weaviate
  • DevOps: Vercel/Cloud, CI/CD, Sentry/Crashlytics, Mixpanel/GA

Nice to have

  • Edge functions, WebSockets, payments/IAP, media processing, growth experiments at scale

How we hire

  1. 20-min screen
  2. Portfolio deep dive
  3. Practical build test – a short, real-world feature or API build
  4. Team chat

Apply with

GitHub or portfolio, two app store links, an API sample or docs.

What’s in it for you?

For the right person, this is more than a job - it’s a chance to be a founding builder. If you help us win, you share in the upside.

#J-18808-Ljbffr
Apply
Location:
London, England, United Kingdom
Salary:
£125,000 - £150,000
Job Type:
FullTime
Category:
IT & Technology

We found some similar jobs based on your search