Senior iOS Engineer - SDK Development

Are you excited about creating the next big iOS app that could surpass Duolingo? Picture a world where studying transforms into a game—where SAT preparation is just as captivating as scrolling through TikTok or immersing yourself in a round of Geoguessr or Trivia Crack.Our mission is to make learning enjoyable, and we're dedicated to bringing this vision to life with a new app called Brainblast, designed specifically for schools.We are looking for YOU to join us in this adventure. We’re revolutionizing studying into a fun, engaging iPhone game. To explore our vision and learn more about the app, visit brainblast.com.About Us: Brainblast is a cutting-edge product by Smart Nonsense—a media company that has generated over 3 billion views worldwide, all while making learning engaging and fun.

Join mlabs as a Mobile App Engineer and be part of a groundbreaking initiative to reshape the future of finance through our next-generation mobile trading platform. This innovative platform goes beyond conventional retail applications, providing a comprehensive trading experience featuring live market data, complex order types, and multi-venue execution.As a Mobile Engineer, you will harness the capabilities of professional trading terminals, adapting them for mobile use. You will tackle sophisticated engineering challenges, including maintaining synchronized real-time price feeds and ensuring system performance remains robust during high market volatility. This role is perfect for a developer who thrives in high-bandwidth, in-person collaborative settings and is eager to build ambitious systems from the ground up.

We are seeking a talented iOS Developer to join our dynamic team. In this role, you will be responsible for designing and developing high-quality mobile applications for iOS devices. This is an exciting opportunity to work with cutting-edge technology and contribute to innovative projects that enhance user experiences.

Join Hinge: The Dating App Designed to Be DeletedIn an increasingly digital world, establishing authentic connections can be challenging. At Hinge, we are dedicated to fostering meaningful relationships and combating loneliness. Our passion lies in understanding user behavior to facilitate love, with our success measured by one core goal—creating successful dates. As one of the most trusted platforms for relationship seekers globally, we aim to connect people in a genuine way.About the OpportunityAs an integral member of our dynamic iOS team, you will be instrumental in the development and enhancement of the Hinge iOS mobile application. Your primary responsibilities will include implementing innovative product features, troubleshooting issues, and elevating the overall user experience, utilizing iOS technologies such as Swift, Core Data, and various Apple frameworks. You will collaborate with a diverse team comprising product managers, technical project managers, designers, data engineers, backend engineers, and QA analysts. Working closely with the Tech Lead and fellow developers, you will contribute to our product's evolution and the growth of our engineering community. This position provides a unique chance to engage in impactful work that directly influences a mobile app used by millions. Over time, you will cultivate your skills and grow into a confident, independent iOS developer.

At CoStar Group, we believe in the art of creating perfect systems, much like constructing an ideal wall that effectively separates spaces. Our commitment to excellence is mirrored in our approach to software development, where we strive for functionality and user satisfaction. We are searching for an exceptional Senior iOS Developer who thrives on enhancing everyday experiences through code, embodying our vision of continuous improvement.As part of our engineering team, you will play a crucial role in delivering innovative features to millions, collaborating with product and design teams to translate ambitious ideas into practical solutions. Your insights and contributions will directly influence the evolution of our iOS codebase, ensuring that we build systems that foster connection and engagement.

About UsCredit Genie is an innovative, mobile-first financial wellness platform dedicated to empowering individuals to take charge of their financial futures. Utilizing advanced artificial intelligence, we deliver personalized insights while creating a comprehensive financial ecosystem that offers instant access to cash and tools for building credit. Our mission is to help every customer achieve long-term financial stability.Founded in 2019 by Ed Harycki, the former founder of Swift Capital (which was acquired by PayPal in 2017), we are backed by Khosla Ventures and led by experts from industry giants such as PayPal, Square, and Cash App. We are strategically positioned to shape the future of inclusive finance through cutting-edge technology and customer-centered solutions.We are seeking a passionate and skilled Senior iOS Engineer to architect and enhance our mobile applications as we prepare for significant growth over the next 2-3 years. The ideal candidate will have a proven track record in leading the development of high-quality, stable, and low-latency mobile applications.If you are enthusiastic about creating exceptional iOS applications and are eager to tackle the challenges of integrating new products and features, we would love to have you on our team. As a Senior iOS Engineer, you will take ownership of critical components of our mobile app while collaborating with cross-functional teams to ensure that our application scales and evolves to meet the demands of millions of users.Your ResponsibilitiesCollaborate with designers, product managers, and engineering teams to architect new products and define an engaging user experience that seamlessly integrates with our iOS mobile app.Leverage your expertise in iOS mobile app development to enhance team practices, design patterns, deployment processes, and overall customer experience.Engage with stakeholders from product, marketing, and other departments to align initiatives with KPIs and business objectives.Develop clean, efficient, and reusable code for app design, features, components, and integrations.Contribute to all stages of the development lifecycle, ensuring high standards and smooth transitions.Participate in best engineering practices including code reviews, daily stand-ups, planning sessions, and technology demonstrations.Stay updated on emerging technologies and industry trends, assessing their potential to enhance the Credit Genie product suite and maintain our competitive advantage.

At Clay Labs, we are dedicated to revolutionizing the learning experience through innovative cohort-based programs. We are seeking passionate individuals to join our team as we embark on exciting projects that impact learners worldwide.

Join Headway as a Staff iOS Engineer and play a pivotal role in shaping the future of mobile technology. You will be responsible for designing and implementing innovative iOS applications that enhance user experiences. Collaborate with cross-functional teams to develop scalable solutions while leveraging the latest technologies in the iOS ecosystem.

Join Duolingo as a Senior Android Engineer focused on enhancing our app builds! In this role, you will collaborate with cross-functional teams to design, develop, and implement innovative features for our Android applications. We are looking for an individual who is passionate about mobile technology and dedicated to delivering a great user experience.

Are you a passionate Mobile App Developer looking to take your career to the next level? Join our talent pool at Mission Box Solutions, where innovation meets creativity. We are seeking skilled developers who are excited about creating cutting-edge mobile applications that enhance user experiences.At Mission Box Solutions, we foster a collaborative environment where your skills can shine. Whether you're experienced in iOS, Android, or cross-platform development, we want to hear from you!

Join Via as a Senior iOS Engineer and be a vital part of our mission to revolutionize transportation globally. You will focus on enhancing the rider experience, including booking, account management, and more. Additionally, you will play a key role in managing and advancing our multi-platform UI and automation testing infrastructure.

At Compass, we are dedicated to helping everyone find their place in the world. Since our inception in 2012, we have been at the forefront of revolutionizing the real estate sector with our comprehensive platform that enables residential real estate agents to provide outstanding service to both sellers and buyers.About the RoleThe Client Infrastructure team is the backbone of innovation, offering the essential platform, tools, and infrastructure that empower our iOS engineering teams to swiftly build, deploy, and deliver high-quality features. As a Senior Software Engineer within the iOS Platform sub-team, you will take on the role of a technical leader, driving the future of iOS development at Compass. You will cultivate a culture of technical excellence and developer empowerment among our team of over 40 iOS engineers.We seek a pragmatic visionary who can dissect complex iOS architectures to mitigate future technical debt, streamline extensive build systems, and implement scalable and resilient platform solutions that enhance productivity across the engineering team. In addition to execution, you will serve as a mentor and technical leader for aspiring iOS engineers, spearheading impactful and high-complexity platform initiatives. You will lead by example—innovating, teaching, and shaping the future of iOS engineering at Compass.This position necessitates profound expertise in iOS platforms coupled with strategic foresight to amplify the capabilities of our entire iOS organization through robust platform infrastructure.ResponsibilitiesSteer the technical roadmap for iOS platform infrastructure, promoting a leading developer experience and modern iOS development methodologies among 40+ iOS engineers.Design, scale, and maintain core capabilities of the iOS platform, which include build systems, testing infrastructures, API frameworks, and shared libraries, ensuring they meet the performance and quality demands of all iOS product teams.Oversee the iOS testing strategy and infrastructure, empowering teams to uphold rigorous testing standards via intelligent automation, AI-enhanced testing tools, and quality gates that enforce best practices.Lead initiatives for iOS platform modernization, including the Swift 6 migration strategy, adopting Kotlin Multi Platform, and reducing technical debt while advocating for coding standards and architectural patterns.Refine iOS build system infrastructure (Bazel) serving over 40 engineers, focusing on reducing build times, implementing caching strategies, and developing productivity tools that guide engineers along the optimal path.Establish and enhance standards for iOS app performance, reliability, and monitoring metrics.

Machine Learning Developer Experience EngineerAbout Our TeamAt Adaptive ML, we are at the forefront of AI innovation, developing a cutting-edge Reinforcement Learning Operations (RLOps) platform that empowers enterprises to specialize and deploy Large Language Models (LLMs) with tangible outcomes. Our platform provides the foundational infrastructure needed to tune, evaluate, and serve specialized models at scale, enabling the pioneering of task-specific LLM development and the execution of production-ready workflows that manage millions of requests while optimizing for both cost and performance across distributed systems.Our dynamic team has previously contributed to the development of state-of-the-art open-access large language models. We successfully raised $20M in seed funding led by Index Ventures and ICONIQ in early 2024, and we are already operational with clients such as Manulife, AT&T, and Deloitte, spanning the travel and financial services sectors, with many more partnerships on the horizon.About This RoleWe are searching for a talented ML Developer Experience Engineer who will empower ML engineers and development teams to utilize reinforcement learning effectively, without needing extensive RL expertise. You will be responsible for creating developer-focused tools, abstractions, and workflows that simplify the training, evaluation, and deployment of RL models, making them intuitive, robust, and scalable. Your contributions will enhance our customers' ability to adopt, grow, and manage RL use cases independently.This position plays a crucial role in our growth strategy: your work will facilitate independent scaling for our customers, minimizing friction and enabling self-service adoption throughout their organizations. You will closely collaborate with Technical Success, Product, and Engineering teams to identify common patterns, extract reusable solutions, and delineate the boundaries between tooling and product.This position is based in Paris, New York, or Toronto.Your ResponsibilitiesDesign and build user-friendly SDKs, libraries, APIs, and tools that enhance RL workflows for developers and ML engineers.Achieve a balance between simplicity and flexibility—supporting common patterns while allowing for advanced configurations and extensibility.Collaborate with internal teams to refine core components into documented, reusable modules that drive customer success.Engage with technical and customer success teams to identify recurring customer patterns and workflow impediments.Translate user feedback into tooling enhancements, error messaging improvements, onboarding processes, and example references.Maintain comprehensive documentation to support user engagement.

Join Match Group as a Staff Software Engineer, specializing in iOS development. In this pivotal role, you will be responsible for designing, developing, and maintaining high-quality applications that enhance our users' experiences across our platforms. Your expertise in iOS frameworks and languages will be crucial as you collaborate with cross-functional teams to deliver innovative solutions.

Role overview Speechify seeks an iOS Core Product Software Engineer in Buffalo, NY. The team is dedicated to building and refining iOS applications that make audio content more accessible and enjoyable for users. This role centers on shaping the mobile experience for those who rely on listening and accessibility features. What you will do Design and develop features for Speechify’s iOS apps Work alongside engineers to improve app performance and reliability Collaborate with teammates to enhance user experience and interface Offer ideas and solutions that contribute to product growth Team values Emphasis on creativity and practical problem solving Open communication and strong teamwork Dedication to building tools that help people engage with audio content in new ways Location This position is based in Buffalo, NY, USA.

Join our dynamic team at dev2 as a Senior iOS Software Engineer. In this role, you will leverage your expertise to design, develop, and maintain innovative applications for iOS devices. You will work closely with cross-functional teams to create high-quality software solutions that meet our users' needs. Your contributions will help shape the future of our mobile applications and enhance user experience.

Join Miter as a Staff Product Manager, App Founder, where you will drive the development and strategic direction of our innovative applications. You will work closely with cross-functional teams to define product vision, roadmap, and deliver exceptional user experiences that align with our company goals.This role requires a blend of technical acumen and business insight, allowing you to translate market needs into actionable product features. You will lead initiatives to enhance our product offerings and ensure they meet the highest quality standards.

About MedalMedal is the premier and rapidly expanding platform for gaming clips, where millions of gamers capture, share, and relive their most exhilarating moments. Each year, our players record billions of clips, showcasing unique highlights filled with action. We are on a mission to build the next generation of gaming communities that are social, monetized, and powered by creators. Our goal is to create products that facilitate seamless and enjoyable sharing, discovering, and connecting around gaming moments.Recently, we successfully raised a seed round of $133 million from General Catalyst and Khosla to propel the future of intelligence in gaming.The RoleWe are seeking a Senior/Lead iOS Engineer to elevate our mobile application to new heights. You will collaborate with a small, talented team of engineers and designers to enhance the Medal experience on iOS—developing features ranging from real-time editing tools to content discovery and notifications. Your contributions will help shape our mobile architecture, influence product direction, and create experiences that are enjoyed by millions of gamers.If you are passionate about delivering high-quality mobile experiences, have a keen eye for user interactions, and want to work on a product that sits at the intersection of social engagement and gaming, this opportunity is perfect for you.

About SunoSuno is a pioneering music technology company dedicated to enhancing creativity, where innovative ideas transform into sound and melodies become uniquely yours. We are on a mission to develop a groundbreaking platform fueled by the most sophisticated music creation model worldwide, sharing the joy of musical expression with millions.Established by passionate Harvard graduates two years ago, Suno has rapidly ascended to success, achieving an impressive $200 million in annual recurring revenue. This makes us one of the fastest-growing AI startups globally, with a current valuation of $2.45 billion. In November 2025, we secured $250 million in Series C funding and now proudly employ 150 talented individuals across our dynamic offices in Venice Beach, Cambridge, and New York City.With over 100,000 reviews and an outstanding 4.9 rating on the App Store, our iOS team is instrumental in shaping the future of our innovative products and driving our company's success.About the RoleWe are seeking skilled iOS Engineers to join our expanding mobile development team. In this role, you will collaborate closely with our product designers and managers to develop Suno's iOS application, enabling seamless music creation at everyone’s fingertips.Explore the Suno song we crafted especially for this role: https://suno.com/s/oEdmOtkZDLHCopSGWhat You’ll DoDevelop and implement essential features and UI components for Suno's iOS app utilizing Swift and SwiftUI.Collaborate with our audio engineering team to seamlessly integrate and enhance music playback and creation functionalities.Engage in design and product decision-making processes to elevate the overall user experience.Optimize the performance, user experience, aesthetic quality, and overall feel of our products.What You’ll NeedA minimum of 3 years of experience in developing iOS applications.Proficient in Swift and SwiftUI, with a strong portfolio demonstrating your work.In-depth knowledge of iOS performance optimization techniques and best practices.Ability to produce clean, maintainable, and well-documented code.Fundamental understanding of RESTful APIs and networking principles.Excellent communication skills and the capacity to thrive in a collaborative environment.A genuine passion for music (listening, exploring, creating) is highly desirable.Bachelor's degree in Computer Science or related field.