ios developer for a drawing app

ArtWorkout is a mobile drawing app used by millions of people worldwide. It combines creativity, education, and gamification to help users learn to draw, relax, and develop new skills.

• Develop and improve the Metal-powered drawing engine;
• Build interactive drawing and gamification features;
• Own product and technical initiatives from problem definition to production outcome;
• Propose improvements to the drawing experience, engagement mechanics, performance, and reliability;
• Translate business and user needs into practical technical solutions without waiting for a fully specified task;
• Optimize graphics performance and rendering quality;
• Develop client-server integrations;
• Define success signals, monitor released features, and iterate based on results;
• Participate in code reviews and technical and product discussions;
• Start with the business goal and user problem, not only a ready-made specification;
• Turn ambiguous problems into clear solutions and execution plans;
• Challenge assumptions and proactively suggest product, UX, graphics, performance, and technical improvements;
• Own delivery end to end: discovery, implementation, release, monitoring, and iteration;
• Work with product, design, analytics, and engineering to define what success looks like;
• Use data and experiments to validate whether the solution actually improved the product.

• Strong Swift and UIKit skills;
• Experience with Metal or another graphics API such as OpenGL, Vulkan, or DirectX;
• Solid experience building graphics-intensive iOS applications;
• Experience with SwiftUI and Combine;
• Confidence working with a production codebase;
• Strong ownership and the ability to work effectively with ambiguity;
• Product thinking: ability to connect technical decisions with user and business outcomes;
• Ability to communicate trade-offs, propose solutions, and drive work to completion;
• English B1+;
• Russian B1;
• Nice to have: Hands-on experience with A/B testing, experience with GrowthBook or another experimentation platform, experience with PencilKit, experience building creative, drawing, or other graphics-intensive applications, experience using product analytics to improve shipped features.

• Fully remote work from anywhere in the world;
• Contractor agreement with an individual entrepreneur or private individual;
• Flexible working hours;
• Direct influence on product decisions and the opportunity to own meaningful initiatives;
• Opportunity to work on one of the world's leading drawing apps used by millions of people.