Lead Senior iOS Engineer at Cantina | San Francisco

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 unloc…

About CasaAt Casa, we understand that homes are not just properties; they are cherished assets that deserve a seamless ownership experience. Our mission is to redefine homeownership by creating a cutting-edge, personal property management platform that transforms the way individuals manage their single-family homes.Founded by pioneers from Uber, CloudKitchens, and Levels, Casa is backed by a remarkable group of prominent VC firms and angel investors. We are proud to be operational with a community of paying members.About the RoleWe are on the lookout for a founding Senior iOS Engineer to join our dynamic team. In this pivotal role, you will design, develop, and launch top-tier mobile applications that provide immense value to our users.You will collaborate closely with our founders, fellow engineers, and designers to create innovative products that resonate with our members. Your contributions will not only shape our core systems and products but also play a significant role in establishing our team culture.Your ResponsibilitiesLead the architecture and development of our iOS applications, ensuring a flawless user experience for homeowners and vendors alike.Prototype new features and applications swiftly to adapt to user feedback and needs.Work closely with designers to craft intuitive and visually appealing user interfaces.Guarantee the performance, quality, and responsiveness of our applications through ongoing testing and refinement.Stay updated with the latest advancements in iOS development, incorporating new technologies and methodologies as appropriate.Mentor a growing engineering team by reviewing peers' code and designs, providing constructive feedback to uphold high standards.Your ProfileExtensive experience: You possess over 5 years of iOS development experience, with a proven track record in building and launching mobile applications, showcasing deep expertise in Swift and Apple SDKs/APIs.Design-oriented: You are passionate about creating exceptional user experiences and enjoy working with designers to deliver aesthetically pleasing and functional applications.Excited about startups: As a founding engineer in an early-stage startup, you understand that many systems and structures are yet to be established, and you are eager to take an active role in building and shaping them.

Join Atlas as an iOS Engineer and play a crucial role in designing innovative mobile applications that enhance user experiences. You will collaborate with cross-functional teams to deliver high-quality software solutions, ensuring seamless integration with backend services. Your expertise will contribute to the development of cutting-edge features that delight our users.As a member of our dynamic team, you will have the opportunity to implement best practices in mobile development, optimize app performance, and stay up-to-date with the latest industry trends. If you are passionate about mobile technology and eager to make an impact, we want to hear from you!

Join Rylo, a cutting-edge camera technology company that revolutionizes video capturing with unparalleled stabilization software and a user-friendly smartphone app. Our innovative solution is developed by a talented team of former engineers from Instagram and Apple, ensuring the highest quality in video production. With Rylo, capturing stunning videos is as simple as pressing a button — no more worries about framing or stabilization.See Rylo in actionWe are seeking a skilled iOS Engineer with extensive experience in developing user interfaces using the iOS SDK. The ideal candidate will possess strong problem-solving abilities, exceptional organizational skills, and a detail-oriented mindset. If you are eager to contribute to a passionate team dedicated to enhancing photography and videography experiences, we would love to hear from you!

About the Role Speechify is looking for an iOS Core Product Software Engineer in San Francisco, CA. This position focuses on building and improving iOS applications that make audio content more accessible and enjoyable. The work centers on delivering a strong user experience for a diverse audience. What You Will Do Develop and maintain core features for Speechify’s iOS app Work closely with teams across product, design, and engineering Apply new technologies to improve app performance and accessibility Help shape the future direction of Speechify’s audio content platform Location This role is based in San Francisco, CA, USA.

About UsAt Speak, we are on a mission to transform the way individuals learn languages.Learning a new language can be life-changing, unlocking opportunities to explore new cultures, advance careers, and build connections. With two billion people globally striving to master a language, the most effective method—one-on-one tutoring—remains elusive and has not significantly evolved over the years. Speak is pioneering an AI-powered, human-level tutoring experience that fits in your pocket: a conversation-first platform designed to empower learners to practice speaking, receive immediate feedback, and progress through meticulously crafted lessons. This approach offers a comprehensive journey from novice to proficient speaker across various languages.Launched in South Korea in 2019, Speak has rapidly ascended to become the leading language learning application, now catering to learners in multiple markets and over 15 languages. As one of the foremost AI enterprises globally, we have secured over $150 million in venture funding from prestigious investors such as OpenAI, Accel, Founders Fund, Khosla Ventures, and others, supported by a diverse team distributed across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.About This RoleAs a Senior iOS Engineer within Speak’s engineering team, you will play a crucial role in enhancing our content delivery, conducting A/B tests on monetization features, and supporting the launch of new markets and languages. Your collaboration with backend engineers and our Product and Design partners will be essential as you work to deliver product features to millions of users.Key ResponsibilitiesEnhance the “freemium” experience to boost conversion ratesAid in the introduction of new markets and languagesImplement various paywall experiments, including pricing, design modifications, deferred paywalls, and promotional offersRefine our speech-to-text systemAdvance our audio and video streaming technologiesQualificationsA minimum of 5 years of professional experience as a Mobile Engineer, ideally within a dynamic startup atmospherePreferred: Experience working on an app with over 1 million usersExpertise in Swift, with a solid grasp of prevalent mobile architectures, including MVC/MVVMPreferred: Familiarity with SwiftUIPreferred: Experience in mobile streaming technologies

Join Perplexity AI as a skilled iOS Engineer and play a pivotal role in transforming the way users navigate the web. You'll be instrumental in developing and enhancing Comet, our innovative browser designed specifically for iOS.We seek a candidate with exceptional programming expertise, a keen interest in artificial intelligence and large language models, and a dedication to providing an outstanding user experience supported by a sophisticated user interface.Key ResponsibilitiesCraft a high-performance native iOS application that will be enjoyed by millions globally.Maintain a rigorous standard of quality in both user and developer experiences.Collaborate closely with design teams to create fast, intuitive user interfaces.Engage with data science and machine learning teams to evaluate and enhance the overall user journey.Partner with infrastructure and QA teams to streamline deployment processes, including testing, release, and monitoring.QualificationsA minimum of 5 years of industry experience.Solid understanding of Swift and proven experience with a modern iOS tech stack, including SwiftUI (iOS 16+) and UIKit.A passion for creating beautiful user interfaces, excellent user experiences, and writing reusable, testable code.Strong grasp of low-level details and the ability to profile and optimize app performance.Comfortable working in a small, agile team, demonstrating ownership and initiative.A genuine enthusiasm for iOS development and exploring the latest advancements in iOS and iPadOS.(Bonus) Experience in browser development is a plus.

Join 360IT Professionals as an iOS Engineer, where you will play a crucial role in developing innovative mobile applications for our diverse clientele. You will collaborate closely with cross-functional teams to design, implement, and maintain high-quality software solutions that enhance user experience.

Join Line2 as a Senior iOS Developer and play a pivotal role in advancing our leading business communications and messaging application. As part of our team, you will enhance the functionality of our top-ranked app, ensuring it remains innovative and incorporates Apple's latest iOS features. Additionally, you will collaborate on the design and development of our cloud architecture. If you have a passion for iOS development, a portfolio of published apps, and a desire to contribute to an innovative product, we want to connect with you. Line2 is a rapidly growing company with a groundbreaking product, and your efforts will have a direct impact on our users.Proactive engineer dedicated to the quality and functionality of our product.Exceptional communication skills to collaborate effectively with Product, Development, Customer, and QA teams.Enhance existing features while crafting new experiences for our users.Develop within a complex, multi-tiered application environment utilizing Web Services.Contribute to the architecture and implementation of our cloud solutions.Write efficient code that optimizes audio and network performance.Work closely with Product owners, QA, and fellow Developers to build robust software.Engage in Agile methodologies, delivering functional code as a measure of success.

About Us:Parabola is an innovative workflow builder that simplifies the process of organizing and transforming complex data from various sources, including PDFs, emails, and spreadsheets. Our goal is to empower forward-thinking teams to automate tasks that they previously believed required manual intervention.Prominent companies such as Brooklinen, On Running, and Flexport rely on Parabola to save countless hours and tackle ambitious projects that once seemed unattainable. Whether it’s reconciling inventory from multiple third-party logistics providers, auditing invoices, or the repetitive task of exporting reports every week, Parabola enables teams to automate these processes without needing engineering resources.We are proudly backed by esteemed investors including OpenView Partners, Matrix Partners, and Thrive Capital.About the Role:As a pivotal member of the Automation Engineering team at Parabola, you will be instrumental in helping our largest and most strategic clients realize the full value of our offerings. Your journey will begin in the sales cycle, where you will collaborate closely with customers and Account Executives to establish success metrics and actionable plans for efficient value delivery. Through a combination of training sessions, interactive workshops, and hands-on support, you will work alongside our Mid-Market and Enterprise clientele to design and implement AI-driven workflows that automate intricate business operations and unveil new efficiencies. Your leadership will guide customers from initial design to successful execution, ensuring that each solution provides sustained impact and value, and that customers enjoy a premier onboarding experience, a smooth transition to our Customer Experience team, and a solid foundation for success with our product.About You:You are passionate about customer success. You empathize with their challenges, share in their victories, and celebrate their “ah-ha!” moments as if they were your own. Possessing a natural talent for solving complex problems, you dive deep into understanding customers’ systems, industries, and internal processes. You are equipped with both soft skills for relationship building and technical skills for troubleshooting APIs, querying databases, prompting advanced AI models, and constructing effective Parabola workflows. Your experience includes managing multiple projects simultaneously and working with Mid-Market and Enterprise clients. Above all, you are enthusiastic, confident, and personable, representing our company with pride and advocating for the customers you support.

About the Role: As a Senior Software Engineer specializing in iOS at Tools for Humanity, you will be instrumental in shaping innovative applications that empower users in the age of AI. Your expertise will contribute to building a robust ecosystem where real identities are verified, enabling safer online experiences.Key Responsibilities:Design, develop, and maintain high-quality iOS applications.Collaborate with cross-functional teams to define, design, and ship new features.Continuously discover, evaluate, and implement new technologies to maximize development efficiency.Ensure the performance, quality, and responsiveness of applications.

Join Perplexity AI, a pioneering company in the field of AI-driven search, as a Senior iOS Engineer. You will play a crucial role in transforming how users interact with the internet by developing innovative features and enhancing the performance of our iOS application.We are seeking a talented individual with a solid programming background, enthusiasm for search technologies and large language models, and a strong commitment to crafting exceptional user experiences complemented by an elegant user interface.

Join Scribe as a Senior Product Engineer, where you'll play a crucial role in developing innovative products that enhance user experience. In this position, you will leverage your expertise to design, implement, and optimize cutting-edge solutions. Collaborating with cross-functional teams, you'll contribute to the entire product lifecycle, ensuring that our offerings meet the highest standards of quality and functionality.

Join Our Team at Triumph ArcadeTriumph Arcade revolutionizes mobile gaming by enabling players to wager and win real money while enjoying mass multiplayer games and social tournaments. We proudly offer the leading app in our category on the App Store, and we've experienced remarkable month-over-month growth in both revenue and active users. As we continue to scale rapidly, we are excited to innovate and launch new products like Rips, our successful collectibles app, which is expanding its reach. And this is just the beginning!Backed by top-tier consumer venture capitalists such as Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph Arcade is poised for growth.

Join Our Team as a Senior Product Engineer at KatoAbout the PositionRole: Senior Product Engineer (Full-Time)Reports To: CTOLocation: San Francisco (4 days a week in-person)Company OverviewAt Kato, we recognize that lenders allocate over $24 billion annually to hire agents for tedious, manual servicing tasks. While many existing AI solutions attempt to automate these processes, they often overlook regulatory compliance, resulting in systems that cannot be trusted for critical workflows.Kato stands apart by prioritizing compliance as the cornerstone of our operations. Our innovative approach integrates a regulatory rules system with a powerful AI decision engine. This enables us to construct a fully compliant, AI-driven servicing platform that automates essential workflows across all channels, ensuring optimal recoveries. Our human teams can then concentrate on the nuanced decision-making tasks that require their expertise.We are proud to introduce a compliance-first Voice AI agent capable of managing both outbound and inbound loan servicing calls. Currently, we are in production with well-known fintech lending partners such as Bilt Rewards and Parafin.Founded by a team with extensive expertise in financial services and software development, Kato is led by:Pratik Risbud (CEO/Co-Founder): Former Investment Banker at Goldman Sachs and previously led Credit/Operations at Brex.David Zhu (CTO/Co-Founder): Former Software Engineer at Google and Engineering Manager at Brex.Backed by institutional investments from Pear VC and angel investors from leading tech firms such as Brex, Bridge, and Square, we are on the lookout for top talent to fuel our growth.About the RoleWe are in search of a highly motivated and impactful Senior Product Engineer who will collaborate directly with our clients to develop innovative products and enhancements. As our second engineering hire, you will have a unique opportunity to influence our technical landscape and future direction.

About GustoAt Gusto, we are dedicated to empowering the small business economy. Our services simplify complex tasks like payroll, health insurance, 401(k)s, and HR, allowing business owners to concentrate on their passion and customers. With teams in Denver, San Francisco, and New York, we proudly support over 400,000 small businesses nationwide, committed to creating a workplace that reflects and honors the customers we serve. Discover more about our Total Rewards philosophy.About the Role:We are seeking passionate Mobile iOS Engineers who are eager to craft exceptional user experiences. In this role, you will develop features that are not only functional but also intuitive and delightful for our users. You will take charge of scaling our shared services while staying current with the latest iOS advancements. Collaborating with teams from Product Management, Identity, Security, System Design, and Infrastructure, you will build solutions that make a significant impact. If you are enthusiastic about creating elegant, scalable applications and want to be part of a supportive, innovative mobile team, we would love to connect with you!About the Team:At Gusto, we are at a transformative stage with over 1M+ monthly active users and the recent launch of our employer experiences on mobile. Our mission is to address the real challenges faced by small business owners and their employees, with mobile technology being crucial for delivering effective solutions. As a member of our mobile team, you will be at the forefront of this change, collaborating with talented engineers and designers passionate about providing a seamless mobile experience. Together, we aim to empower small business owners and their teams to succeed. If you are ready to make a difference in the mobile landscape at Gusto, we want you on our team!Here’s what you’ll do day-to-day:Architect, build, test, and enhance Gusto’s native iOS app, along with supporting mobile web views that elevate user experience.Develop, iterate, and refine product features that integrate core business functions, work tools, value-added services, and financial products.Collaborate closely with our product management, design, and partner teams...

About VSCO VSCO (pronounced vis–co) is a vibrant platform designed to provide photographers with the essential tools, community, and visibility they need to flourish both creatively and professionally. Our commitment lies in nurturing a genuine creative atmosphere that caters to photographers of all skill levels, ensuring a sanctuary for creativity, inspiration, and collaboration. Our mission is to support photographers in their journey, equipping them to connect with fellow creatives and businesses through our comprehensive suite of innovative tools spanning mobile and desktop platforms across our global community. We seek individuals who are motivated and proactive in elevating our company mission. At VSCO, you will have the chance to make a significant impact, as we believe that collective building leads to stronger outcomes. Our core values are foundational to our team culture and influence our hiring practices. Discover what you can expect when joining VSCO on our Careers Page. About The Role If you are passionate about iOS development and eager to be part of a dynamic team of creators, we encourage you to apply for this role and help us empower creators globally. At VSCO, you will collaborate with talented individuals who share your enthusiasm for innovation and creativity. We are developing a comprehensive ecosystem of tools for photographers, enhancing our existing offerings while creating new products and services. This pivotal role will allow you to define and advance our vision, significantly influencing how our users create, connect, and monetize their work. Join us in shaping the future of mobile technology and making a meaningful contribution to the global creative community. As a Staff Engineer, you will primarily function as a technologist, engaging in coding, tackling complex challenges, and staying abreast of emerging technologies. Your influence will extend beyond individual contributions as you serve as a technical leader, guiding the team through intricate issues, advocating for best practices, and anticipating future needs to keep the team ahead of the curve. You will focus on scalability, long-term maintainability, and future enhancements, while also mentoring fellow engineers, raising the quality bar, and facilitating success for others.

OverviewAt Vitalize, we are pioneering a future where hospital operations are not only safe but also autonomous, equitable, and economically viable. Currently, hospitals depend on outdated methods such as spreadsheets and instinct to manage their vital workflows, leading to significant inefficiencies, employee burnout, and suboptimal patient outcomes.Our innovative approach replaces these antiquated systems with a cutting-edge operating platform designed for hospital workforce management. We provide real-time decision support for clinical leaders, minimize manual tasks, lower unnecessary labor costs, and enhance patient capacity across healthcare systems.Our team consists of talented individuals, including Stanford, Cambridge, and Columbia dropouts, former math champions, and serial entrepreneurs. With our solutions already implemented in over 20 hospitals, we are approaching an impressive eight-figure revenue and backed by top-tier investors. Our revenue has tripled in the last three months, and we are on a rapid growth trajectory. This is your chance to help shape the foundational infrastructure of healthcare at a pivotal moment.Role SummaryWe are seeking a Senior Product Engineer to play a crucial role in developing the core systems that drive hospital operations on an enterprise scale and to revolutionize the way hospitals function.In this role, you will collaborate closely with the founders, operations team, and our customers to take charge of and lead impactful features from conception to execution. Your contributions will have a direct influence on thousands of clinicians and operational leaders throughout entire health systems.This position offers a high degree of autonomy; you will be expected to work independently, make pivotal technical decisions, and take ownership of your outcomes. The challenges you will face are complex, real-world constraints exist, and precision is of the utmost importance.Key Challenges You Will AddressReal-time Workforce Intelligence: Develop an event-driven infrastructure that integrates high-latency, multi-source healthcare data into a cohesive operational model, essentially creating a dynamic digital twin of the hospital.Forecasting and Planning: Create systems that can predict patient volume and staffing requirements based on historical data and current patient flow.Optimization and Recommendations: Implement a decision-making layer that generates actionable staffing suggestions under tight constraints and incomplete information.Autonomous Scheduling: Design prompt-driven automation tools for nurse scheduling that eliminate fragile manual processes.

Agency Notice: We are not collaborating with recruiting agencies for this position. Please refrain from contacting Vizcom employees regarding this role. Any unsolicited resumes will not be acknowledged.Why Join Vizcom?At Vizcom, we are on a mission to revolutionize design by simplifying the journey from concept to creation, transforming impactful ideas into tangible realities.Backed by significant funding (Series B with $51 million raised to date), we are experiencing robust month-over-month growth and are actively expanding our core engineering team in San Francisco. Our scope is vast: real-time collaboration, GPU inference at scale, utilizing a modern TypeScript stack, and addressing real enterprise needs.The RoleAs a Senior Product Engineer, you will be responsible for key product components in Vizcom’s real-time design environment, including our canvas rendering engine and collaborative UX systems. Your expertise in React, WebGL, and GraphQL will be essential in enhancing performance, interaction design, and developer experience. You will work closely with designers, AI engineers, and backend leaders to ensure that Vizcom’s interface is not only visually stunning but also exceptionally fast. In your first 90 days, you will: deliver a new or re-architected user-facing feature that enhances product performance or fidelity, establish a render or collaboration performance baseline (including metrics like frame rate, latency, and bundle size), contribute to frontend technology direction (such as render pipeline abstraction and UI state modeling), and eliminate one persistent performance or UX issue across the frontend stack.Compensation$195,000 - $225,000 annually + Equity OpportunitiesYour ResponsibilitiesCreate Engaging Interactive Features: Develop functionalities that integrate design, collaboration, and 3D visualization.Enhance Performance: Optimize React and WebGL rendering to ensure instantaneous responsiveness under load.Design Developer Ergonomics: Develop component architecture, hooks, and state models that scale effectively.Collaborate with Design Teams: Rapidly prototype, test user experiences, and bring high-fidelity UX to fruition.Boost Observability: Implement and analyze performance metrics (FPS, React profiler, network traces).Mentor Colleagues: Review code for clarity, structure, and long-term maintainability.

Join Sonsoft Inc. as an iOS Developer, where you'll be a vital part of our innovative team in San Francisco. You will develop cutting-edge applications for the iOS platform, ensuring optimal performance, quality, and responsiveness of applications.