Senior Software Engineer, iOS
Join us in building a world-class creative platform used by millions of people.
Our product, SCRL, is a powerful photo and video editing platform loved by millions of creators worldwide. We're looking for a Senior iOS Engineer to help build what comes next.
About the role
This isn't a typical iOS role. SCRL is a tool people use to create, not just consume. That means you'll be working on things most apps never touch: real-time image and video manipulation, complex multi-touch interactions, advanced layout systems, and performance-sensitive rendering pipelines.
You'll work across the full depth of the app, from pixel-level rendering to fluid, responsive UI that feels effortless to use. The problems are hard, the users are demanding, and the bar for quality is high.
What you will do
Core Product Engineering
Build and evolve SCRL's editing engine, working on image processing, video rendering, and real-time visual effects.
Design and implement complex interaction models: multi-touch gestures, precise object manipulation, drag, resize, snap, and transform.
Solve hard problems in coordinate geometry, layout systems, and state management.
Push performance to its limits, optimising rendering, memory usage, and responsiveness across a wide range of devices.
Quality & Craft
Own features end to end, from planning through to delivery.
Write code that is fast, correct, and maintainable.
Sweat the details that make the difference between a good tool and a great one.
Work closely with design to get interactions, animations, and transitions feeling exactly right.
Collaboration & Growth
Contribute to architecture decisions and help shape the technical direction of the iOS codebase.
Participate in code reviews, planning sessions, and technical discussions.
Share knowledge and help raise the bar across the engineering team.
Stay sharp on the latest in the iOS ecosystem and bring ideas back to the team.
You should have
Extensive experience in iOS development and Swift.
Strong computer science fundamentals: data structures, algorithms, and an intuition for performance.
Experience building complex, interactive, gesture-driven interfaces.
A deep understanding of UIKit, Core Animation, and the iOS rendering pipeline.
The ability to reason about performance at a low level: frame rates, memory, GPU vs CPU tradeoffs.
Strong signals
Experience with image processing, video rendering, or real-time graphics on iOS.
Familiarity with Metal, Core Image, AVFoundation, or similar frameworks.
Background in creative tools, design software, or editor-style applications.
Experience working on consumer apps with large user bases.
Interest in geometry, math, or computational problem solving.
What we offer
The chance to work on genuinely hard, interesting problems every day.
A product that millions of people use to create, not just another feed or dashboard.
Real ownership and direct impact in a small, focused team.
Great colleagues and office in central Stockholm.
Competitive compensation and opportunities for professional development.
- Locations
- Stockholm
Stockholm
What makes us different
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We work on our own products
We don't do work for hire. We're also completely self-funded (and profitable), giving us the freedom to work on whatever we believe the most in. -
We work on fun products
We get to combine our creativity with our interest in technology when creating products that are loved and that we can be proud of.
Workplace & culture
We’re a young and growing company, working in-person together in the heart of Stockholm. We believe working together closely and collaborating across all disciplines is key to coming up with fresh ideas and solving difficult problems. We are passionate people that care deeply about our crafts and making products that people love and appreciate. We strive to hear everyone’s voice and creative ideas, and to create an environment where we all can learn and grow professionally.
About Appostrophe
Appostrophe is a Stockholm-based developer of popular mobile applications. We develop our own products—mainly graphic design tools for iOS—and distribute them across millions of users. As a small, self-funded team, we are able to move fast and in the direction we find most promising. With multiple top-listed, fast-growing apps in our portfolio (and more to come!) we're looking to grow our team.