Senior iOS Developer

Salt; Amsterdam; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Salt is seeking a Senior iOS Developer to advance a globally used mobile app. You will design, build, and maintain native iOS features, collaborating with product, design, and backend teams to deliver a seamless user journey.

The role emphasizes performance, reliability, and high code quality, with opportunities to mentor teammates and influence mobile architecture. Start ASAP for 12 months in a hybrid setup (3 days on site) in Amsterdam.

Qualifications

• 6+ years of professional experience building native iOS apps.
• Strong expertise in Swift and SwiftUI.
• Deep understanding of iOS frameworks, architecture patterns and best practices.
• Experience consuming RESTful APIs and backend services.
• Solid object-oriented programming and software design knowledge.
• Experience writing automated tests (unit and snapshot).
• Familiarity with A/B testing and release management processes.
• Experience monitoring applications in production environments.
• Strong debugging and problem-solving skills.
• Knowledge of full-stack concepts and backend interactions.
• Excellent communication with technical and non-technical stakeholders.
• Self-motivated, detail-oriented, fast-paced collaborator.
• Fluent English, written and spoken.

Responsibilities

• Design, develop, and maintain native iOS features using Swift and SwiftUI.
• Collaborate with cross-functional teams to deliver engaging mobile experiences.
• Build scalable, high-performing solutions for millions of users.
• Work with backend teams to integrate APIs and enable end-to-end functionality.
• Monitor app health, troubleshoot incidents, and resolve complex bugs.
• Perform performance profiling and optimization for app responsiveness.
• Implement and maintain automated testing strategies (unit and snapshot).
• Contribute to architecture discussions and technical decisions across mobile platform.
• Maintain code quality, test coverage, and engineering best practices.
• Support A/B testing and data-informed product decisions.
• Mentor teammates and participate in recruitment activities.
• Translate business requirements into technical solutions balancing impact and scalability.

Job description

Duration: 12 months

Hybrid: 3 days on site

Start: ASAP

We are looking for an experienced Senior iOS Developer to help build and enhance a world-class mobile experience used by millions globally. You will join a collaborative team focused on creating seamless customer journeys within a large-scale consumer application, working closely with product managers, designers, analysts, backend engineers, and fellow mobile developers.

This role offers the opportunity to work on highly visible customer-facing features while contributing to the evolution of a modern mobile platform. You will play a key role in delivering high-quality experiences, improving app performance, and shaping technical solutions that support business growth.

Responsibilities

• Design, develop, and maintain native iOS features using Swift and SwiftUI.
• Collaborate with cross-functional teams to deliver engaging and intuitive mobile experiences.
• Build scalable, maintainable, and high-performing solutions for millions of users.
• Work closely with backend teams to integrate APIs and ensure seamless end-to-end functionality.
• Monitor application health, investigate incidents, troubleshoot production issues, and resolve complex bugs.
• Perform performance profiling and optimization to improve app responsiveness and reliability.
• Implement and maintain automated testing strategies, including unit and snapshot testing.
• Contribute to architecture discussions and technical decision-making across the mobile platform.
• Ensure high standards of code quality, test coverage, and engineering best practices.
• Support A/B testing and experimentation initiatives to drive data-informed product decisions.
• Mentor and onboard team members, helping to foster a culture of continuous learning and collaboration.
• Translate business requirements into effective technical solutions while balancing customer impact, scalability, and engineering excellence.
• Participate in technical interviews and contribute to recruitment activities.

Required Skills & Experience

• 6+ years of professional experience developing native iOS applications.
• Strong expertise in Swift and SwiftUI.
• Deep understanding of iOS frameworks, architecture patterns, and mobile development best practices.
• Experience integrating and consuming RESTful APIs and backend services.
• Strong knowledge of object-oriented programming principles and software design.
• Experience writing and maintaining automated tests, including unit and snapshot tests.
• Familiarity with A/B testing, experimentation platforms, and release management processes.
• Experience monitoring and supporting applications in production environments.
• Strong debugging, troubleshooting, and problem-solving skills.
• Understanding of full-stack engineering concepts and backend systems.
• Excellent communication skills with the ability to engage both technical and non-technical stakeholders.
• Self-motivated, detail-oriented, and comfortable working in a fast-paced collaborative environment.
• Fluent English communication skills, both written and spoken.

Nice to Have

• Experience with App Store submission, approval, and distribution processes.
• Experience releasing and maintaining applications in the Apple App Store.
• Knowledge of observability, monitoring, and performance analytics tools.
• Open-source contributions or active involvement in developer communities.
• Experience working on large-scale consumer-facing products.
• Passion for emerging technologies and mobile innovation.