Senior iOS Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior iOS Engineer based in Spain.

As a Senior iOS Engineer, you will play a key role in building high-quality mobile experiences that help users achieve their health and wellness goals. You will design, develop, and optimize features for a widely used iOS application while collaborating closely with Product and Design teams. This role offers the opportunity to take ownership of impactful user-facing features, contribute to technical decisions, and improve the overall performance and reliability of a growing digital platform. You will join a remote-first, product-focused engineering environment that values autonomy, innovation, and proactive problem-solving. This position is ideal for an experienced iOS developer who enjoys hands-on development and making a measurable impact through technology.

• Design, develop, and release new iOS features with a strong focus on usability, performance, and delivering meaningful value to users.
• Build and maintain scalable mobile architecture, including networking, data persistence, and state management solutions that support long-term product growth.
• Collaborate closely with Product Managers and Designers to transform user needs and product requirements into practical, maintainable technical solutions.
• Contribute to technical planning by evaluating feasibility, identifying risks, and recommending approaches aligned with user and business objectives.
• Write clean, maintainable, and well-tested code while participating in code reviews and improving engineering standards.
• Take ownership of developed features by identifying opportunities for improvement, analyzing feedback, and iterating on solutions.
• Improve application stability and performance by diagnosing technical issues, resolving crashes, and optimizing the overall user experience.
• Contribute to a collaborative remote engineering culture based on ownership, transparency, and continuous improvement.

Requirements

• 5+ years of professional software development experience with significant experience building iOS applications.
• Proven experience delivering production-ready iOS apps from development through release and ongoing improvement.
• Strong proficiency in Swift and modern iOS development practices.
• Experience creating responsive, intuitive mobile interfaces with strong attention to detail and performance.
• Deep understanding of iOS UI patterns, navigation systems, animations, and handling complex production scenarios.
• Experience actively using AI coding assistants such as Claude Code, Codex, OpenCode, or similar tools to improve development speed, debugging, and problem-solving.
• Strong knowledge of iOS networking concepts, including REST or GraphQL APIs, authentication flows, caching strategies, error handling, and offline scenarios.
• Experience designing and maintaining scalable architectures such as MVVM, Redux-style patterns, Clean Architecture, or similar approaches.
• Strong understanding of iOS performance optimization, debugging tools, crash analysis, and profiling techniques.
• Excellent communication skills in English with the ability to collaborate effectively in a remote, distributed team environment.
• Experience with SwiftUI, scalable design systems, third-party SDK integrations, subscription flows, CI/CD tools, or cross-platform technologies such as React Native or React.js is considered an advantage.
• Previous experience in a startup or fast-growing product environment is a plus.

Benefits

• Fully remote position with flexible working hours and an async-friendly culture.
• Competitive B2B compensation package with equity options.
• Opportunity to directly influence a product used by a large community of creators and users.
• High level of ownership and autonomy with minimal bureaucracy and micromanagement.
• Collaborative international team environment with strong focus on communication and trust.
• Opportunities to work on impactful features that are shipped quickly and used by real customers.
• Yearly team retreats focused on collaboration, alignment, and relationship building.
• Paid time off and support for sustainable work-life balance.