Android Craft Engineer (Part-time)

koodos
koodos

Software Engineering

Posted on Aug 17, 2026
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Remote · Part-time, project-based · Could convert to full-time in NYC

Why join koodos labs?

koodos labs is building personal intelligence that works for the person it represents.

Our mission is to put personal intelligence within your control: to help people bring together the context they choose, understand and refine what Shelf learns on their behalf, and decide how that context can be used.

We built Shelf to make that vision useful and fun in the real world.

What we’re building

Millions of people choose to connect Shelf to services like Spotify, Netflix, Amazon, YouTube, Goodreads, and more. Shelf aggregates that activity on their behalf, and every rating, comment, correction, or addition helps refine the picture.

Users and creators have already built hundreds of personal apps on Shelf powered by that context. Because Shelf asks people to encounter, trust, correct, and use software’s understanding of them, those moments cannot feel like generic AI output or a dashboard. They need to feel intentional, responsive, and trustworthy across the real Android ecosystem.

The Opportunity

Shelf is native Android, built in Kotlin and Jetpack Compose. We want to chase the things that make a great Android app feel unmistakably Android: fluid gesture behavior, edge-to-edge layouts, transitions that respect the platform, thoughtful back navigation, responsive system surfaces, and the small implementation details that make an app feel fast and intentional.

We have strong design taste and a growing native Android codebase. What we’re looking for is someone who lives at the seam between design and engineering, and who can bring the level of craft people expect from the best independent Android apps to Shelf at scale.

This role helps define what personal intelligence feels like on Android, by making Shelf feel coherent and exceptional across devices, screen sizes, OS versions, and system surfaces.

The Work

  • Elevate Shelf’s most important native Android surfaces, with particular attention to responsiveness, motion, gesture behavior, transitions, haptics, navigation, and tactile detail.
  • Partner closely with design and engineering to turn product directions into polished experiences in Kotlin and Jetpack Compose.
  • Own the implementation quality of interaction-heavy surfaces across the app.
  • Help make personal intelligence feel legible and delightful, especially in the places where people see, refine, and control the context Shelf has assembled on their behalf.
  • Contribute to platform-native moments across Android, including home-screen widgets, notifications, shortcuts, share surfaces, deep links, adaptive layouts, and other places where the platform itself becomes part of the product.
  • Make Shelf feel excellent across the real Android ecosystem: different devices, screen sizes, OS versions, performance profiles, and system behaviors.
  • Work inside an evolving product and visual system without needing to reinvent the app from scratch.

    • Who We’re Looking For

    The kind of Android engineer who has a Play Console history, a personal app or two on Google Play, and strong opinions about navigation, motion, and touch feedback.

    You’re likely a good fit if you:

  • Have shipped Kotlin/Jetpack Compose work you’re proud of, whether indie apps, side projects, or polished features inside larger products.
  • Have a design engineer’s eye and can reason about motion, density, hierarchy, interaction quality, and platform conventions rather than just implementation correctness.
  • Are disciplined inside an existing system and can improve it without unnecessarily forking or refactoring it.
  • Have deep native Android instincts across Compose, navigation, gestures, widgets, notifications, adaptive layouts, deep links, system UI, and related surfaces.
  • Care about performance across a fragmented device ecosystem and know how to make interactions stay smooth under real-world conditions.
  • Use AI tools heavily and thoughtfully to increase your throughput without lowering your judgment.
  • Work well asynchronously and communicate clearly through written updates, PRs, and critique.

    • Bonus signals include indie apps with a following, Google Play features or awards, social/media product experience, public writing on Android craft, animation work with Compose or Rive/Lottie, or a portfolio site that itself feels designed.

    Logistics

    Remote. Part-time and project-shaped, with flexibility on weekly hours as long as throughput is consistent. We typically start with one well-scoped paid project so we can calibrate together. For the right person, we’re open to a longer engagement, equity, or eventually a full-time role in NYC.

    To Apply

    Send links to team@koodos.com.

    What we want most is the work itself: a Google Play link, internal build, video of an interaction you’re proud of, or a personal site. A short note on the most interesting Android feature you’ve shipped, what made it hard, and what you’d do differently is helpful but not required if your portfolio already says it.

    Apply now
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