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Open nowFirst seen 39 hours ago

Mobile App Developer (iOS-first, AI-integrated)

Slang2 open roles

Where
Berlin, Germany, Remote
Work mode
Remote
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Your applicationOpen nowMobile App Developer (iOS-first, AI-integrated)Slang · Berlin, Germany, Remote

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Slang's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

11.8% of postings close within 7 days. Measured by our own scanner across the market. Slang postings stay open a median of 2 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.8%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: first seen 39 hours ago

Slang median: 2 days open

The posting

Mobile App Developer (iOS-first, AI-integrated)

Join a bold, culture-powered AI startup from day one.

SLANG is not your typical language app.

We believe that learning a new language should feel like living it. Our app blends AI-driven conversation, movie-like storytelling and real-world slang into a gamified, mobile-first learning experience. Think Duolingo meets TikTok.

Were building a new category of learning product. Playful, pop-cultural, deeply intelligent and were looking for a mobile developer who wants to own the engineering side of bringing SLANG to life.

Role Requirements

  • Build the first version of the SLANG app,ideally iOS-first using React Native, Swift, or similar
  • Integrate LLM-based tools (e.g. GPT-4, Whisper, TTS/STT) for real-time conversations
  • Implement scenario-based logic with support for avatars, storylines, and branching dialogue
  • Work closely with design to ensure gameplay feels intuitive, dynamic, and responsive
  • Set up back-end architecture (or help us choose how to do it right)
  • Create the codebase, tech stack and deployment process - from prototype to App Store
  • Contribute hands-on with the development of a range of solutions including websites, web apps, CI pipelines, and headless CMS integrations.
  • Define and implement scalable, maintainable front-end architectures using modern frameworks.
  • Collaborate closely with UX, design and creative teams to deliver pixel-perfect interfaces with exceptional animation, motion and rendering performance.
  • Champion modern front-end tooling to improve velocity, code quality and team workflow.
  • Inspire others to form an exemplary technical team by sharing knowledge, mentoring peers, and leading by example.
  • Participate in pitches.
  • Stay ahead of emerging technologies and propose ways to integrate innovation meaningfully, especially around AI.

Qualities & Characteristics

  • Youve built mobile apps before, either independently or as part of a team
  • Strong skills in iOS development (Swift/SwiftUI) or cross-platform tools like React Native
  • Experience or curiosity around AI tools, APIs, and voice/speech tech
  • You care about UX and making things work beautifully, not just functionally
  • Self-driven, reliable and excited to shape how people learn languages in a new way
  • Interest in conversational AI, game logic and working with creative teams
  • A can-do attitude, eager to embrace big challenges
  • Attention to detail and a passion for getting to the root of a problem

SLANG is early. Thats your opportunity.

Were a small team building a product we believe should exist - and were looking for creative minds who want to grow with us.

SLANG is an equal opportunity employer and considers applicants for all positions without discrimination or regard to particular characteristics. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers.

Send us your portfolio, or just drop us a message on getslang.com

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    The review screen in CV Rocket: how each CV was read, round by round.

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