Principal Software Engineer - Ads Infrastructure

Exciting OpportunityWe are seeking a Senior SDK Engineer to play a pivotal role as an individual contributor on our iOS SDK. You will be responsible for owning key features or subsystems from initial design through implementation and ongoing maintenance.This position offers a unique chance to work at the dynamic crossroads of SDK development, machine learning, and robust data infrastructure. Join us in crafting innovative solutions that advance advertising technology, impacting billions of global ad experiences while maintaining a strong focus on privacy and compliance.

Exciting OpportunityWe are seeking a talented Senior Full-Stack Engineer to become a pivotal individual contributor on our Ad Unit team. In this role, you will take ownership of comprehensive ad features that encompass ad unit logic, mobile SDK integration, and event gateway services.This is your chance to work at the thrilling intersection of SDK development, machine learning, and data infrastructure. Join us in crafting innovative solutions that advance advertising technology, influencing billions of ad experiences worldwide while prioritizing privacy and compliance.

Exciting OpportunityUnity is embarking on a transformative journey to enhance its capacity to directly assess the effectiveness of its advertising solutions—specifically measuring whether a particular ad led to an installation—without solely depending on third-party mobile measurement partners (MMPs). We are seeking a Principal Engineer for Ads Measurement to spearhead this initiative. This position entails owning the vision and implementation of Unity's self-attribution capabilities, facilitating independent ad performance measurement, cultivating reliable sources of truth for AI/ML optimization, and establishing a clear, deliberate relationship with the MMP ecosystem. This key leader will work at the nexus of advertising, data science, platform strategy, and developer trust, influencing how Unity measures, interprets, and enhances advertising outcomes in an intricate and dynamic measurement environment.Key ResponsibilitiesArchitect Unity’s Measurement Infrastructure: Design and execute a scalable technical framework essential for independent measurement of install attribution and ad effectiveness.Enhance Self-Attribution Capabilities: Lead the engineering initiatives to create internal attribution signals and ensure reliable, privacy-conscious install measurement across various platforms.Drive AI/ML Optimization: Work closely with data science and machine learning teams to guarantee that measurement data is of high quality and optimally structured for model training.Establish Technical Strategy for MMP Ecosystem: Define technical integration standards for Unity as a self-attributing network, ensuring secure and consistent data exchanges within the broader ecosystem.Foster Cross-Functional Technical Leadership: Ensure alignment across Ads, Data, Engineering, and Privacy teams, making measurement a robust strategic asset.

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.

Join Our TeamAt Unity Technologies, we are on a mission to create a powerful, near real-time reporting platform that is essential for analytics and decision-making across our expansive ecosystem. We are in search of a talented Data Engineer who will play a pivotal role in architecting and implementing distributed data systems that enable this platform to operate at scale.In this dynamic role, you will design and construct high-throughput, low-latency data processing pipelines that support reporting functionalities for both internal teams and external clients. You will work at the forefront of distributed systems, stream processing, and cloud-native infrastructure, ensuring the reliability, correctness, and scalability necessary for a high-volume production setting.This is an impactful position where your engineering excellence, architectural vision, and ownership of production will be highly valued.

At Hover, we empower individuals to design, enhance, and safeguard the properties they cherish. Leveraging proprietary AI technology built on over a decade of extensive real property data, Hover addresses timeless inquiries such as, “What will it look like?” and “What will it cost?” Homeowners, contractors, and insurance professionals depend on Hover to obtain fully measured, accurate, and interactive 3D models of any property through a quick smartphone scan.Our team is fueled by curiosity, purpose, and a collective commitment to serving our customers, communities, and each other. We are firm believers that the best ideas stem from diverse perspectives, and we take pride in fostering an inclusive, high-performance culture that inspires growth, accountability, and excellence. Supported by prominent investors such as Google Ventures and Menlo Ventures, and trusted by industry leaders like Travelers, State Farm, and Nationwide, we are transforming how people perceive and interact with their spaces.Why Hover Wants YouWe are in search of a Senior Engineering Manager to spearhead our Capture team, an essential unit at the heart of our 3D property scanning technology. The Capture team is responsible for two fundamental experiences that drive every scan:The guided mobile capture workflow utilized by customers to scan properties and gather high-quality data for our 3D reconstruction pipeline.Our external Capture SDK, which allows enterprise clients to integrate Hover’s capturing technology directly into their own iOS and Android applications.This team operates across native iOS and Android platforms, interfaces with our React Native application, and directly influences scan quality, user success, and enterprise adoption. In this pivotal role, you will lead a high-impact team ensuring that data capture with Hover is intuitive, reliable, and scalable for both end-users and enterprise developers. Since capture serves as the entry point to our system, your team’s work will significantly affect the overall performance of our platform, from scan completion to reconstruction quality to customer trust.Your ContributionsIn this position, you will lead and expand a high-impact mobile engineering team responsible for both Hover’s end-user capture experience and our enterprise Capture SDK across iOS and Android. You will oversee the capture experience from start to finish, collaborating closely with Product and Design to create an intuitive, guided scanning workflow that enables users to accurately capture property data while continuously enhancing completion rates and scan quality through metrics and user insights. Additionally, you will guide the evolution of Hover’s external Capture SDK platform, establishing robust practices for API lifecycle management, versioning, documentation, and release processes, while partnering with customer-facing teams to support integration efforts.

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 Unity and redefine the future of gaming analytics!As a Senior Product Manager for Ads Measurement, you'll play a pivotal role in empowering game developers to better understand and expand their player communities. This role places you at the forefront of how Unity aids developers in making informed, data-driven choices regarding their games and advertising efforts.You will manage a dynamic portfolio of measurement initiatives, including a strategic partnership that is instrumental in enhancing core capabilities within the Unity Ads Measurement arena. Collaborate across Unity's Data Developer Framework, recommendation engines, and client-facing measurement tools to deliver essential insights that drive developer success.We seek a dedicated PM who can take charge of a complex measurement domain, quickly build trust with technical and business stakeholders, and create significant impact from the outset. If you have a passion for data, enhancing developer experience, and bridging the gap between ads and measurement, this is the perfect opportunity for you.

Location: ChinaVisa Support: Not available About Airbnb Since 2007, Airbnb has connected travelers with unique stays and experiences around the world. With more than 5 million hosts and 2 billion guest arrivals, the platform helps people explore new places and cultures while building genuine community connections. Role Overview: Senior iOS Engineer, Global Markets The Global Markets engineering team focuses on improving the Airbnb experience for guests and hosts in over 220 countries. The team adapts and innovates features to meet the needs of diverse markets. While the team works remotely, regular in-person collaboration brings everyone together to share progress and celebrate milestones. What You Will Do Work with product managers, designers, data scientists, QA, and engineers in China and worldwide to turn product requirements into technical solutions. Design and review solutions for a range of challenges, including market-specific features and mobile infrastructure. Write clean, testable, and maintainable code in Swift to deliver smooth user experiences. Mentor junior engineers and help strengthen the team’s engineering practices. Your Impact As a Senior iOS Engineer, you will tackle technical challenges unique to global markets. Projects may include building locale-aware user interfaces, adding features tailored to specific regions, and optimizing app performance. Responsibilities cover key product areas such as sign-up and login, search, checkout, maps, and networking. Your experience will help raise engineering standards through code reviews and mentorship.

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.

Founding Engineer (Unity Mobile)Pax Historia is revolutionizing gameplay by leveraging cutting-edge generative AI technology. Our innovative platform seamlessly combines the intricacies of grand strategy with the limitless creativity of a sandbox environment, all while being energized by a dedicated community that actively creates and remixes scenarios.Our community is vibrant, publishing hundreds of scenarios daily and engaging in millions of gameplay sessions each week, with rapid growth on the horizon. Supported by prominent investors such as Y Combinator, Pace Capital, and Z Fellows, your contributions will directly impact a product enjoyed by hundreds of thousands of players.The RoleWe are seeking a founding-level Unity developer to spearhead the development of our native mobile application. This role requires full-time, in-person work in our San Francisco office located in Dogpatch, where you will collaborate closely with the co-founders.Current Position Overview:A web-based game with significant product-market fit, particularly within the alternate-history genre.Hundreds of thousands of users are eagerly anticipating a native mobile experience.A well-documented TypeScript codebase with clear data models and API patterns for integration.No existing Unity codebase; you will be architecting the system from the ground up.Your Key Responsibilities:Developing the core gameplay loop for iOS and Android, including features such as an interactive map, action submissions, event viewing, and AI-driven chat.Creating a high-performance 2D map rendering system capable of displaying thousands of regions with smooth panning, zooming, and animated territorial changes.Building a consistent UI component library that aligns with our web design system (custom components, Poppins typography, dark/light modes).Integrating with our Firebase/Supabase backend and AI services through REST APIs.Implementing push notifications and deep linking to enhance user engagement.Optimizing the application for lower-end mobile devices and memory-constrained environments.In summary, your contributions will propel Pax Historia into the mobile realm and unlock our next phase of growth.

Discord serves over 200 million users each month for a multitude of reasons, but one unifying activity stands out: gaming. With over 90% of our community engaging in gaming, they collectively spend an astonishing 1.5 billion hours playing thousands of unique titles on our platform each month. As a pivotal player in the gaming landscape, Discord is dedicated to enhancing the experience of connecting and sharing moments before, during, and after gameplay.We are seeking a talented, innovative, and results-driven Senior Software Engineer to become part of our dynamic Ads team.This team is at the forefront of transforming user interactions on our platform through cutting-edge advertising formats, including Quests. Our mission revolves around crafting extraordinary user experiences while scaling our platform to unprecedented success. These innovative products empower us to generate revenue by creating a mutually beneficial ecosystem for game developers, players, and Discord. Join us in defining the future of digital advertising and marketplace interactions!To dive deeper into Discord Engineering, explore our engineering blog!

Are you a seasoned iOS Engineer looking to take your career to the next level? Join our dynamic team at 360 IT Professionals, where innovation meets excellence. We are seeking a talented and experienced Senior iOS Engineer who will play a pivotal role in the development of cutting-edge mobile applications.In this role, you will collaborate with cross-functional teams to design, build, and maintain high-quality iOS applications. Your expertise will help us deliver exceptional user experiences and drive our mobile strategy forward.

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.

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.

About Abby CareAt Abby Care, we are dedicated to revolutionizing family caregiving in America. Our mission tackles one of the most pressing challenges faced by over 50 million unpaid family caregivers: providing them with the training and employment they deserve for the vital care they offer at home.We are creating a powerful, tech-driven family care platform that enhances the caregiving experience, improves health outcomes, and delivers exceptional support nationwide.As we expand our mission, we are seeking passionate individuals to join our team. Our partnerships with leading healthcare providers, insurance plans, and community organizations, along with the backing of top-tier, mission-focused venture capitalists, empower families across the country. You will become part of a talented team with expertise from renowned companies such as Uber, Scale AI, DoorDash, Dropbox, and Meta.The RoleWe are in search of a motivated and skilled Senior Software Engineer, Mobile (iOS & Android) to join our team. You will report directly to the VP, Head of Engineering. This is a full-time role based in San Francisco, CA (4 days in-person).In this position, you will be at the forefront of transforming family caregiving through innovative, AI-driven mobile solutions. You will lead the development of our mobile applications, ensuring they are user-friendly, intuitive, and robust for family caregivers. Recognizing that our users may not be tech-savvy and may utilize the app in various environments with inconsistent connectivity, you will create solutions that function seamlessly in real-world conditions, establish a comprehensive testing framework, and implement reliable updates that families can depend on daily.Key Responsibilities:Oversee the entire mobile app development lifecycle. You will take ownership from initial concept through to delivery, including technical design, core feature implementation, performance optimization, and oversight of release cycles for both iOS and Android platforms.Create an intuitive and resilient caregiver-focused experience. You will develop user flows that are straightforward, guided, and forgiving, tailored for non-technical users, ensuring the app remains functional in low-connectivity situations.

Join Reddit's dynamic Brand Ad Formats team as an Android Software Engineer, where you'll be instrumental in shaping innovative ad experiences for millions of users. Your role will involve developing impactful ad formats, enhancing the performance of Reddit’s Android app, and collaborating with cross-functional teams to tackle complex challenges. We are seeking a product-focused engineer who is eager to push the boundaries of advertising technology and elevate user engagement through creativity and technical expertise.

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.