Software Engineer (IOS)

Keystone AI is the global, privately-owned company dedicated to helping the world to travel with ease and confidence. The group offers a unique blend of industry and sector specialists who together provide market-leading airport experiences, loyalty and customer engagement, and insurance solutions for over 400 million consumers. Keystone AI is the operator of Priority Pass, the world’s original and leading airport experiences programme. Travellers can access a network of 1,500+ lounges and travel experiences, including dining, retail, sleep and spa, in over 650 airports in 148 countries, helping to elevate the journey into something special. We work with the world’s leading payment networks, over 1,400 banks, 90 airlines and 20 hotel groups worldwide. We have been bringing innovation to the market since inception – from launching the first independent global VIP lounge access Programme, Priority Pass to being the first to sell direct travel insurance in the UK through Columbus Direct and creating the first loyalty agency of its kind in the travel sector with ICLP. Today we still invest heavily in innovation to ensure that we continue to deliver superior customer experiences. Key clients include Mastercard, American Express, Cathay Pacific, British Airways, LATAM, Flying Blue, Accor, EasyJet, HSBC, Chase, HDFC. Our mission is focused on doing good beyond profit, which for us means we seek out opportunities for our people to share in our success and that we give back to the communities and people within which we work. Never short of ambition, the success of our business is delivered through the diverse and talented team of over 2,200 global colleagues. We're growing our team in Poland and want to be upfront about how this role is structured. As we don't yet have a legal entity in Poland, we work with an Employer of Record (EOR) or umbrella company to onboard talent in the region. This means the role is offered on a fixed term basis via an international contractor agreement — and is fully remote. Purpose of the job: The Senior IOS Developer at Keystone AI 's Travel Experience Division will be at the forefront of bringing our visionary roadmap to life, focusing on delivering globally appealing, customer centric solutions. Acknowledging the importance of regional nuances, the chosen candidate will guarantee that our digital offerings strike a chord at both the universal and localized levels. This role is pivotal in architecting and developing iOS applications that offer a smooth, user-friendly travel experience for our global clientele. Key Responsibilities: Design and build advanced applications for the iOS platform. Collaborate with cross-functional teams to define, design, and ship new features. Maintain and improve existing codebase, focusing on continuous integration and deployment strategies. Work on bug fixing and improving application performance. Ensure the best possible performance, quality, and responsiveness of the application. Integrate with third-party libraries and APIs, ensuring seamless functionality. Continuously discover, evaluate, and implement new technologies to maximize development efficiency. Coordinate with the design team to ensure UI/UX best practices are followed. Address any security vulnerabilities and work to ensure a secure app environment. Stay updated with the latest mobile trends, architectures, and emerging technologies. Knowledge, skills and experience required 4-8 years of strong design/development experience overall, with 4+ years of mobile development experience You have hands-on experience building mobile applications using Swift, and solid understanding of iOS app design principles, patterns, and best practices. You care about user interaction, usability, and of course, making the interface beautiful. Good knowledge of architectural design patterns such as MVVM and MVP, and provenexperience ensuring modularized and scalable app architecture. Proven experience integrating AI-assisted development tools and techniques into everyday workflows (e.g. code generation, testing, debugging, performance analysis, or automation) You have experience with Cocoapods dependency management in iOS apps You strive for clean code and know how to write flexible tests that won't break and have experience with different test strategies, such as unit, snapshot etc. Good knowledge of design patterns mostly used in mobile development (dependency injection, observers etc) You love coding and take the time to reflect on all aspects of your implementation, be it the frameworks, languages or processes. Ability to take ownership and drive the development of exciting and impactful new features and products. A genuine passion for writing well-structured, readable, and maintainable code You thrive in a team where you can learn and try new tech, collaborate on technical challenges and grow as a team. Interview Process: We want our process to be fair and transparent, so it's only right that we tell you what the