iOS Developer - Software Engineer

About SesameAt Sesame, we envision a world where technology seamlessly integrates with our lives, evolving computers into lifelike partners that can see, hear, and communicate in the most human-like ways. We are on a mission to create innovative voice agents that become an integral part of our everyday routines. Our diverse team comprises founders from Oculus and Ubiquity6, along with leading talents from Meta, Google, and Apple, all possessing a wealth of knowledge in both hardware and software development. Join us as we redefine the future of computing.About the RoleWe are seeking a talented and seasoned iOS Engineer to play a pivotal role in developing the Sesame app, which powers our cutting-edge wearable devices. You will be at the forefront of designing, architecting, and implementing our iOS application that enhances user engagement—from initial setup and account management to personalized experiences and firmware updates. Collaborating closely with design, firmware, and backend teams, you will create an intuitive and delightful user experience that bridges our hardware with the digital landscape.Responsibilities:Develop and refine Sesame’s standalone companion app, establishing a new standard in consumer product categories, while maintaining a strong emphasis on quality and craftsmanship.Collaborate with hardware and firmware teams to create a fluid iOS user experience that seamlessly integrates with Sesame’s wearable technology.Coordinate with cross-functional teams in engineering, design, and product management to deliver complex projects that exceed user expectations.Partner with fellow iOS, Android, and web engineers to define and advance Sesame's mobile and web strategy.Write robust, clean, and maintainable code with a strong focus on performance and reliability.Engage in code reviews, continuous integration/continuous deployment (CI/CD) processes, and oversee App Store release cycles.

About SesameAt Sesame, we envision a future where technology emulates lifelike interaction—machines that can see, hear, and engage with us in ways that feel natural and human. We are innovating a new category of consumer products that integrate voice agents seamlessly into everyday life. Our dynamic team comprises founders from Oculus and Ubiquity6, along with seasoned veterans from Meta, Google, and Apple, all possessing extensive expertise in both hardware and software. Join us in crafting a transformative future where computers truly come alive.Key Responsibilities:Develop Sesame’s proprietary companion app—an essential building block for a groundbreaking consumer product category—while upholding a commitment to excellence and craftsmanship.Collaborate with cross-functional teams in engineering, design, and product management to deliver complex projects that provide exceptional experiences for users.Contribute to the growth of the iOS team at Sesame by championing best practices and cutting-edge iOS app design techniques.Partner with engineers across iOS, Android, and web platforms to strategize the future of mobile and web solutions for Sesame.Essential Qualifications:Deeply intuitive understanding of iOS app aesthetics and design principles.Demonstrated experience in creating delightful, design-centric applications throughout your career.Proven track record as a technical leader, having taken ownership of launching apps or significant features into production multiple times.A strong passion for delivering outstanding products, driven by a desire to understand user needs and find innovative ways to exceed their expectations.Enthusiastic about the intricate engineering processes involved in crafting fast, user-friendly, and revolutionary iOS interfaces.Expertise in minimizing latency in complex iOS applications; adept at overcoming challenges related to networking, architecture, and SDK limitations to enhance interaction speed.Current knowledge of iOS UI/UX design trends; actively engaged in the Apple release cycle and constantly considering how new features can elevate user experience.Extensive hands-on experience with the iOS app development lifecycle, including build processes, testing strategies, and contemporary UI architecture patterns.Preferred Qualifications:Experience with SwiftUI or Combine frameworks.Familiarity with Agile methodologies and project management tools.

Join our innovative team at Collate as a Quality Engineer focusing on medical devices. In this full-time position, you will be responsible for ensuring that our products meet the highest quality standards. You will collaborate with cross-functional teams to develop, implement, and maintain quality assurance protocols that comply with industry regulations and best practices.Your role will involve conducting quality audits, analyzing product performance data, and identifying areas for improvement. We are looking for a detail-oriented individual who is passionate about enhancing product quality and safety in the medical device sector.

astro-mechanica is hiring a Senior Combustion Devices Engineer in San Francisco. This position focuses on designing, developing, and optimizing advanced combustion devices for aerospace applications. Role overview The Senior Combustion Devices Engineer will apply deep knowledge of combustion systems to create and refine high-performance hardware. Collaboration with teams across engineering disciplines is central to this work, ensuring that each device meets demanding standards for safety, reliability, and efficiency. What you will do Design and develop advanced combustion devices Optimize system performance for reliability and safety Work closely with multidisciplinary teams throughout the product lifecycle Requirements Extensive experience with combustion systems engineering Strong background in designing and optimizing combustion hardware Ability to collaborate effectively with engineers from other specialties

About the Role OpenAI is hiring a Software Engineer for the Engineering Acceleration team, working on Consumer Devices in San Francisco. This team builds and improves products that shape how people use technology in daily life. The role involves developing new features and strengthening existing systems for consumer-facing devices.

About Wispr FlowAt Wispr Flow, we are revolutionizing the way people interact with their devices, making it as natural as conversing with a close friend.Our cutting-edge voice dictation platform is currently the go-to solution for users, surpassing traditional keyboards. With unparalleled accuracy, context-awareness, and personalization, our technology is designed to function seamlessly on both desktop and mobile devices.By 2026, we aim to expand beyond dictation, developing a robust framework for native actions that intuitively understands user commands and operates dependably.Our diverse team of AI researchers, designers, growth strategists, and engineers is committed to reimagining human-computer interaction. We prioritize collaboration, user-centric innovation, and meticulous attention to detail. A culture of spirited discussion and a focus on impactful outcomes are central to our values.Over the last year, our revenue has surged by 150% each quarter, and we have successfully raised $81 million from leading venture capital firms and prominent angel investors.

Join Our Innovative Team at Air AppsAt Air Apps, we're driven by a vision to think expansively and act swiftly. Founded by a family in 2018 in Lisbon, Portugal, we are on a mission to revolutionize personal and entrepreneurial planning with our cutting-edge AI-powered Personal & Entrepreneurial Resource Planner (PRP). With an impressive milestone of over 100 million downloads globally, our offices in both Lisbon and San Francisco are bustling with creativity and ambition.Our commitment to innovation propels us to challenge conventional boundaries daily, using AI-driven solutions to make a significant impact on how individuals plan, work, and live. Here, you will harness your creativity to develop products that empower people worldwide.Embark on this journey with us to redefine resource management and improve lives along the way.The OpportunityAs a Senior iOS Engineer, you will be pivotal in creating and enhancing our suite of iOS applications, focusing on performance, scalability, and delivering a flawless user experience. You will collaborate closely with designers, product managers, and fellow developers to implement new features and continuously refine our applications. Your strong expertise in Swift and iOS development principles will be essential in fostering innovation and securing our status as a leader in the App Store.This posting aims to expand our talent pool as we prepare for the official job launch. We will reach out to you once the position is live.

About UsAt XOXO, we are a pioneering research lab dedicated to creating the intelligence interface for daily living. Our covert team of expert engineers, designers, and researchers is focused on uncovering innovative solutions to unique challenges that affect life beyond the workplace.With our recent advancements in infrastructure, architecture, and model layers, we are seeking passionate builders to craft the interface and application layers that will actualize our ambitious vision.About the RoleWe are in search of a skilled iOS engineer to develop XOXO's consumer application, featuring a revolutionary interface for intelligence. This role is ideal for an exceptional engineer who can take ownership of the entire mobile experience—from architecture to performance, refinement, and a visually engaging design system that ensures intentionality in every interaction.Your background is less important than your motivation: you possess a strong sense of ownership, operate swiftly without compromising quality, and are eager to create a mobile product that redefines craftsmanship and performance standards.What You’ll DoDesign and launch the initial iterations of our React Native application, transitioning it from prototype to production.Convert a highly visual design system into reusable components, animations, and interaction patterns with smooth performance.Develop new product features that seamlessly integrate modern AI/ML capabilities within the mobile context.Enhance app performance metrics, focusing on rendering, startup time, memory usage, battery consumption, networking, and user-perceived speed.Establish high standards for mobile engineering quality (testing, instrumentation, release discipline) and collaborate closely across the tech stack to deliver comprehensive solutions.Skills & QualificationsMinimum qualifications:A minimum of 3 years of experience in shipping production mobile applications with an unwavering commitment to quality.Extensive knowledge of React Native and Swift, accompanied by a strong understanding of architecture and long-term maintainability.Proven ability to transform a highly visual design system into a fast, pixel-perfect user interface (UI), incorporating components, interaction patterns, and accessibility features.A track record of developing mobile applications that feel instantaneous under real-world constraints (startup time, rendering, memory, battery, networking) and knowing diagnostic techniques for performance issues.

About the TeamJoin the dynamic Consumer Devices team at OpenAI, where we revolutionize the integration of AI into tangible products. Our team is at the forefront of innovation, developing comprehensive hardware and software systems that merge custom silicon, embedded solutions, operating systems, and cloud technologies to create scalable, reliable devices ready for production.About the RoleWe are in search of a passionate Operating Systems Engineer to fortify the operating system foundations for OpenAI's groundbreaking products. This role is ideal for seasoned developers who excel at creating foundational platform software and tackling complex challenges related to security, privacy, performance, power efficiency, and reliability. Your expertise will span the OS kernel, core services, security and privacy frameworks, performance optimization, and the integration of applications and user interfaces with the system. This position emphasizes in-depth debugging and accountability throughout the development cycle.Collaboration will be essential as you work closely with teams from embedded systems, firmware, hardware, applications, and product engineering. Familiarity with hardware bring-up is advantageous but not mandatory.What You Will DoContribute to comprehensive OS functionalities, including kernel, userspace services, application frameworks, UI toolkits, and APIs.Develop, integrate, and sustain OS components, which encompass scheduling, memory management, filesystems, drivers, IPC/RPC, and security-related subsystems.Build and manage core OS services and daemons such as service management, device discovery, networking, time management, logging, update hooks, and crash handling.Design and implement robust security and privacy mechanisms:Integrate secure boot and measured boot processes as applicable.Implement mandatory access controls and sandboxing.Manage secrets, secure storage, key handling, and design systems with least-privilege principles.Develop privacy-preserving telemetry and user-consent-driven system behaviors.Establish a performance and power management discipline:Conduct instrumentation, profiling, and regression detection for boot time, latency, throughput, and memory usage.Implement workflows for power measurement, battery and thermal-aware tuning, and strategies to prevent energy regression.

Join HeartFlow, Inc. as a Senior Quality Engineer specializing in medical devices. In this pivotal role, you will ensure our products meet the highest quality standards and regulatory requirements. You will collaborate with cross-functional teams to drive quality improvements, conduct risk assessments, and oversee the evaluation of product performance.Your expertise will directly contribute to the design and development of innovative solutions that enhance patient care. If you are passionate about quality assurance in the medical device industry and thrive in a dynamic environment, we invite you to be part of our mission to improve cardiovascular health.

About HeartFlow HeartFlow, Inc. develops medical technology to improve the diagnosis and management of coronary artery disease. The company’s flagship HeartFlow FFRCT Analysis uses advanced AI to create non-invasive, color-coded 3D models of coronary arteries, helping clinicians understand how blockages impact blood flow. HeartFlow’s integrated heart care platform supports clinicians in identifying stenoses (RoadMap™ Analysis), assessing coronary blood flow (FFRCT Analysis), and characterizing atherosclerosis (Plaque Analysis). HeartFlow is publicly traded (HTFL) and recognized internationally for healthcare innovation. Its solutions are approved in the US, UK, Europe, Japan, and Canada, and have supported care for over 500,000 patients worldwide. Role Overview: Senior Manager of Device Quality Engineering The Senior Manager of Device Quality Engineering leads the global strategy for software quality and design excellence at HeartFlow. This role builds and manages a high-performing team, connecting fast-moving Agile development with the rigorous demands of medical device regulations. The team’s work covers digital health solutions, including Software as a Medical Device (SaMD) and AI/ML technologies, with a focus on safety, security, compliance, and scalability. Main Responsibilities Direct the end-to-end design control process within the Software Development Lifecycle (SDLC). Develop and implement a roadmap for compliance, security-by-design, and readiness for global regulatory requirements. Mentor and develop future leaders in quality engineering. Bridge Agile software development practices with medical device regulatory standards. Location San Francisco Bay Area, California, United States

About the Role OpenAI is hiring a Software Engineer to work on Infrastructure for Consumer Devices in San Francisco. This position centers on building scalable systems that support and improve the experience of users interacting with AI-powered devices. What You Will Do Design and develop infrastructure for consumer-facing devices Work on systems that directly impact how users interact with AI technology Apply technical expertise to create solutions that scale as usage grows

Role overview OpenAI seeks a Graphics Software Engineer to influence the graphics features of its consumer devices. The position focuses on developing and refining graphics algorithms that enhance the experience for users of new hardware products. What you will do Create and implement graphics algorithms tailored for consumer hardware. Collaborate with engineering teams to add graphics features that improve product usability and engagement. Use expertise in software development and graphics programming to address complex technical problems. Location This role is based in San Francisco.

About FayAt Fay, we are dedicated to establishing nutrition as a critical component of preventative healthcare, enhancing outcomes, accessibility, and affordability on a large scale. We are creating AI-driven infrastructure aimed at revolutionizing preventative healthcare. Think that's ambitious? We're only getting started!Fay operates as a three-sided marketplace bridging providers, patients, and payers to transform the delivery of preventative care. Our innovative b2b2c solution empowers dietitians to provide top-notch, affordable nutritional care, enables patients to take charge of their health, and allows payers to cultivate healthier member populations. Nutrition is just our starting point; our platform will evolve into broader areas of preventative health and wellness as we expand.We take pride in being one of the fastest-growing companies in health tech, supported by leading investors such as General Catalyst, Forerunner, 1984, and Goldman Sachs.Are you ready to harness AI-driven technology to transform preventative care and impact health positively? Let’s connect!About this RoleWe are excited to offer a fantastic opportunity for an iOS engineer to join our team. What makes this position a dream job?A rapidly expanding user base of tens of thousands!An opportunity to craft an exceptional mobile-first experience that is central to our company’s vision.A collective mission to deliver high-quality, convenient, and affordable healthcare.Currently, we have an app available on the App Store that marks just the beginning of our vision for a comprehensive mobile experience: a hub for healthy eating where users can chat with licensed dietitians and order groceries covered by insurance. To realize this vision, we need to expand our iOS team!We are seeking a talented and passionate iOS engineer with experience in developing sophisticated iOS applications using native Swift, who thrives in the dynamic atmosphere of a startup.What technologies will you engage with? Our iOS application utilizes native Swift, Combine, and an MVVM architecture. Fay’s core technology stack includes a Python backend, a React frontend, and a Postgres database.Your Responsibilities:Building: You will rapidly implement new features and functionalities into the app.Collaborating: You will partner with our exceptionally skilled designers...

Join Our Dynamic TeamAt OpenAI, the ChatGPT division is at the forefront of redefining how individuals interact with advanced AI technologies. Our team is expanding across various domains, including Growth, Ecosystems, Personalization, and Search Infrastructure, all dedicated to crafting the next era of AI-enhanced products and platforms.Role OverviewWe are looking for a talented iOS Software Engineer to develop and enhance the ChatGPT iOS application. In this pivotal role, you will:Design and implement innovative iOS features that push the limits of AI-powered mobile applications.Enhance app performance, architecture, testing coverage, development tools, and overall reliability.Work collaboratively with Product, Design, Research, and Engineering teams to elevate user satisfaction.Take ownership of components from conception to deployment — including design, implementation, testing, and iterative improvements.Integrate seamlessly with backend and AI systems to create exceptional mobile experiences.Your ProfileExtensive experience in iOS development (Swift/Objective-C), with proficiency in frameworks like UIKit/SwiftUI, Core Data, and performance optimization.A passion for crafting intuitive, high-performance, and engaging mobile experiences.Enjoy working in cross-functional teams and thrive in a fast-paced, iterative environment.We welcome applicants in San Francisco, New York, and Seattle.About OpenAIOpenAI is a pioneering AI research and deployment organization committed to ensuring that general-purpose artificial intelligence serves the interests of humanity. We strive to develop AI systems that are safe, effective, and beneficial, while embracing diverse perspectives from across the globe. Our mission is to harness the transformative power of AI while prioritizing safety and human-centric values.As an equal opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees.

About Our TeamJoin OpenAI’s Applications Engineering team, where we are dedicated to transforming our state-of-the-art research into user-friendly products that reach millions of developers and users across the globe. The Applied Foundations team is at the helm of developing the essential product and platform layers that facilitate seamless experiences across our applications, covering everything from identity and access management to safety protocols, payments, and commerce. Our diverse teams encompass product engineering, infrastructure, and safety, collaborating to deliver technology that is secure, reliable, and trusted on a global scale.About the OpportunityAs a Senior iOS Engineer on the Applied Foundations team, you will be instrumental in crafting core mobile experiences that empower users to sign up, manage their accounts, access family features, make payments, ensure safety, and confidently engage with OpenAI’s products. This role focuses on developing high-quality mobile applications as well as reusable iOS components that various product teams rely on to expedite their projects while adhering to the highest standards of security, reliability, and user trust. You will manage intricate client-side systems, including UI, networking, local state, payment integrations, and Apple platform integrations while collaborating closely with backend, product, and safety teams to design the architecture that supports OpenAI’s mobile ecosystem at a global level.Your Responsibilities Will Include:Develop and deploy innovative iOS experiences that leverage the potential of AI.Enhance app performance, reliability, and responsiveness on a global scale.Create and uphold shared iOS frameworks and components for account management, trust, and commerce processes utilized across OpenAI’s mobile applications.Establish comprehensive testing frameworks and optimize app architecture for future maintainability.Collaborate with product, design, research, and backend teams to deliver impactful features.Provide technical direction to influence the evolution of OpenAI’s iOS platform.You Will Excel in This Role If You:Possess 4+ years of experience in professional software engineering.Have a strong history of developing high-quality iOS applications in production, particularly for systems that demand reliability and resilience.Have experience managing complex, mission-critical mobile systems throughout their lifecycle.Have a solid understanding of making architectural decisions within iOS development.Are eager to innovate and tackle challenges in a rapidly evolving technological landscape.

About Cantina:Cantina Labs is a pioneering social AI company, dedicated to developing a cutting-edge suite of real-time models that redefine expression, personality, and realism. Our mission is to animate characters in a way that transforms storytelling, connection, and creativity. With Cantina, our flagship social AI platform, we are just beginning to unlock the potential of AI in shaping human interaction.If you are passionate about the role of AI in enhancing creativity and social experiences, we invite you to join us in crafting the future!About the Role:As a Senior iOS Engineer at Cantina, you will spearhead the development of groundbreaking, high-performance features. This includes designing personalized feeds, creating immersive custom UIs, and empowering our bots with advanced AI-driven functionalities such as chat, text-to-speech, voice selection, image generation, and real-time media effects.You will work closely with Product Managers, Designers, and other key stakeholders to shape the direction of a product that is central to our mission. You will have the opportunity to iterate quickly on impactful updates and enjoy the freedom to bring your innovative ideas to fruition.We seek an individual who excels in pushing the boundaries of iOS development and possesses a fervent desire to create visually stunning, high-performance experiences. Your knowledge of custom graphics, animation frameworks, and media pipelines will be pivotal in establishing the creative foundation of our flagship application, ultimately advancing user experience and innovation within the social AI landscape.What You’ll Do:Utilize frameworks and technologies such as UIKit, AVFoundation, Combine, Core Animation, and others.Lead the development of new AI and media-centric features.Construct and optimize video/audio pipelines, real-time media effects, and AI-enhanced visual features.Participate in Architecture meetings to ensure our applications meet the highest quality standards.Collaborate with Product, Design, and QA teams to deliver polished, scalable user experiences.Own features and contribute as part of a small team that delivers applications to a vast user base.Join a supportive team that values constructive feedback focused on growth.What You’ll Bring:8+ years of experience developing iOS applications.Expertise in custom graphics, animation frameworks, and media pipelines.Strong problem-solving skills and a passion for innovation.

About Our TeamThe Future of Computing Research team is a dynamic applied research unit within the Consumer Devices group at OpenAI. We are dedicated to pioneering innovative methods, models, and evaluation frameworks that propel our vision for the future of computing. Our focus lies at the cutting edge of multimodal AI, transforming emerging model capabilities into product experiences that are not only functional and enjoyable but also foster long-term trust.Our research delves into a new generation of AI systems capable of learning and evolving over time, adapting to individual needs, and enhancing daily life. This includes exploring long-term memory, user modeling, and personalized systems aligned with broader human goals, values, and overall well-being.We collaborate closely across multiple disciplines—research, engineering, design, product management, and safety—to define what it means to build AI systems that recognize and respond to user needs in a contextually aware and respectful manner, ensuring demonstrable benefits.About the PositionWe are seeking a passionate Research Engineer/Scientist to join our Future of Computing Research team, focusing on Reinforcement Learning from Human Feedback (RLHF) and post-training techniques for personalized multimodal AI systems.In this role, you will be instrumental in establishing the learning and evaluation foundations necessary for models to become increasingly context-aware, adaptive, and useful over time. You will tackle challenges such as reward modeling, preference learning, long-horizon evaluation, and policy improvement for systems that are required to make high-quality behavioral decisions in real-world settings. Our success is measured not just by improved benchmark performance but by enhanced model behavior in actual use cases.The ideal candidate is enthusiastic about advancing beyond simplistic one-turn assistant interactions towards systems that learn and grow through feedback, utilizing richer signals and training against meaningful notions of user value. This requires a thoughtful approach to reward design, feedback mechanisms, and evaluation frameworks that assess the long-term benefits of interventions.This position is based in San Francisco, CA, with a hybrid work model of four days in the office each week. We also provide relocation assistance for new hires.Key Responsibilities:Develop RLHF and post-training strategies for multimodal models.Create reward models and preference-learning pipelines to foster adaptive, personalized model behavior.Engage in long-term evaluation and policy refinement to enhance user interactions.

Okta secures identity for organizations adapting to the changing landscape of AI. The company builds trusted, neutral infrastructure that lets businesses operate safely and confidently. Solving complex, real-world problems is at the core of Okta’s work. The Device Access team connects employee devices to the Okta Identity Cloud. This group develops and maintains both the native macOS application and the backend services that support it. Close collaboration across these areas helps deliver a seamless, secure experience for users throughout the organization. Role overview The Senior Engineering Manager leads two teams: the macOS client engineering group and the backend services group. This role sets the overall direction for Device Access, guiding both teams to deliver secure and user-friendly products. Responsibilities include defining strategy across the technology stack and supporting high-performing, cross-functional teams. Key responsibilities Strategy: Define the technical vision, identify new opportunities, and establish a sustainable long-term architecture for Device Access. Execution: Oversee delivery of high-quality client and backend services, remove barriers, and keep teams aligned. Team development: Mentor engineers, manage hiring and performance, and foster a culture of excellence. Leadership: Collaborate with partners across functions, mediate conflicts, make tough decisions, and model a growth mindset. Location This position is based in San Francisco, California.