Software Engineer II, Developer Experience

Join WHOOP in our quest to revolutionize human performance and enhance healthspan. We empower our members to elevate their potential through a profound understanding of their bodily functions and daily habits.We are seeking a talented iOS Engineer II to become an integral part of our dynamic product teams focused on AI Experiences, Growth, and Ecosystem. In this role, you will develop features that not only scale our systems but also boost reliability, enhance user experiences, and provide our members with clinical-grade insights to support their physical, emotional, and hormonal health. From constructing shared frameworks and refining growth experiments to launching health-centric features, your contributions will significantly impact the lives of our members. You will collaborate with cross-functional teams, write clean and efficient code, and play a pivotal role in a platform dedicated to improving health outcomes and unlocking human potential on a large scale.

At WHOOP, our mission is to revolutionize human performance and enhance healthspan. We empower our users to achieve peak performance by providing them with profound insights into their bodies and daily activities. Our cutting-edge wearable technology meticulously tracks vital physiological metrics, including heart rate variability, resting heart rate, and sleep quality, delivering personalized insights that optimize fitness, health, and recovery.As a Backend Software Engineer II specializing in AI Experiences, you will harness WHOOP's state-of-the-art generative AI capabilities to design, develop, and maintain engaging member-facing features that significantly improve health outcomes. You will be an integral part of a collaborative team, working alongside seasoned engineers, designers, and product managers to empower our members in understanding their health, enhancing their performance, and navigating their WHOOP journey with clarity.

WHOOP builds wearable technology that helps members understand their bodies and improve fitness, health, and recovery. The company’s mission centers on unlocking human performance and extending healthspan through personalized insights from physiological data. About the Growth Team The Growth Team focuses on user acquisition, activation, and retention. The group works in an environment built around experiments and rapid iteration, using data to guide decisions and refine features for maximum impact. Role Overview: iOS Engineer II (Growth) This position shapes the mobile experience for millions of WHOOP members. The iOS Engineer II will develop features that drive engagement and growth, working closely with colleagues across teams. Responsibilities include building new functionality, improving the iOS app architecture, and helping WHOOP scale its platform globally. Location Boston, MA

At Klaviyo, we celebrate the diverse backgrounds, experiences, and viewpoints that our team members—whom we affectionately call Klaviyos—bring to our workplace daily. We believe everyone deserves an equitable chance at success and value the unique experiences each individual offers beyond conventional job qualifications. If you feel you are a close match for this role, we encourage you to apply. To learn more about life at Klaviyo, visit klaviyo.com/careers to discover how we empower creators to take charge of their own destinies.Why You Should Join the Onboarding TeamThe Product Expansion team at Klaviyo is dedicated to enhancing the initial experience of our platform for new users. We are committed to optimizing the setup process for customers, ensuring they quickly realize the value of our tools. As engineers, we leverage data to identify improvement opportunities, conduct A/B tests to validate our hypotheses, and collaborate across departments to continually enhance user experience while minimizing obstacles for newcomers. We seek versatile software engineers who are enthusiastic about refining user experiences and have an interest or experience in expanding a user base through effective onboarding strategies.How You Will Make a DifferenceImplement user-experience enhancements throughout the Klaviyo product, with a focus on the new customer journey.Design and execute A/B tests to validate concepts, analyzing results to guide product improvements.Collaborate with marketing, data science, sales, and engineering teams to identify enhancement opportunities and engage directly with customers to understand their needs better.Contribute to refining our experimentation and development methodologies while mentoring fellow engineers.Clearly define objectives, constraints, and context for AI implementations, ensuring accuracy with a focus on security, performance, and maintainability.

WHOOP aims to improve human performance and extend healthspan through wearable technology and personalized insights. The platform tracks metrics like heart rate variability, resting heart rate, and sleep quality, offering members feedback to help optimize fitness, recovery, and overall health. Role Overview The iOS Engineer II (Healthcare) will help design and build features that connect users with advanced data science algorithms via intuitive interfaces. This role focuses on making complex health data clear and actionable, supporting users in understanding physical, mental, emotional, and hormonal health factors. What You Will Do Develop and refine iOS features that drive meaningful health outcomes for WHOOP members Collaborate with the healthcare team to turn research and algorithms into user-friendly visual experiences Support initiatives ranging from medical device launches (such as ECGs) to clinical tools and unique health insights, including WHOOP Age and Menstrual Cycle Insights About the Healthcare Team The healthcare team combines technology and research from both medical and wellness fields. Projects include bringing new medical devices to market, expanding into clinical domains with Advanced Labs, and building features that help members understand and improve their health. Location This position is based in Boston, MA.

About SunoSuno is a visionary music company dedicated to enhancing creativity and imagination. Leveraging cutting-edge AI music technology, we provide a unique creative platform, featuring Suno Studio—a revolutionary generative audio workstation. Whether you're a casual shower singer, an aspiring songwriter, or an established artist, Suno empowers a diverse global community to create, share, and explore music, making the joy of musical expression accessible to everyone.About the RoleWe are seeking a passionate Growth Engineer to join our innovative team of early-stage generalists. This role is pivotal in driving user acquisition and engagement through engineering excellence. You will collaborate closely with our product and growth teams, harnessing data and technology to enhance the user experience and expand Suno's reach to millions of new users.What You’ll DoDesign and optimize features that promote growth, onboarding, and user engagement for Suno’s music applications.Conduct data-driven experiments to enhance user acquisition, retention, and conversion rates.Collaborate with product and marketing teams to develop systems that analyze user behavior, uncover opportunities, and fuel Suno’s growth.Build scalable and high-performance systems and integrations that support our growth initiatives and marketing campaigns.What You’ll Need5+ years of experience in engineering, growth, or a closely related technical field.Extensive knowledge of full-stack development, especially in growth engineering or analytics.Demonstrated experience with data pipelines, analytics platforms, and user tracking (familiarity with tools like Segment, Amplitude, Mixpanel, Statsig, and/or Snowflake is advantageous).Ability to transform data into actionable insights and strategic plans.Proficiency in web technologies (React, Typescript, NextJS) is a plus.A strong desire to iterate rapidly and a commitment to providing an exceptional user experience.A genuine passion for music and experimentation will be beneficial.A Bachelor’s degree or equivalent experience is required.Additional Notes: All applicants must be eligible to work in the United States.

Role overview Klaviyo is hiring a Software Engineer II focused on Developer Experience in Boston, MA. This role centers on improving the tools and systems that support developers across the company. The goal: make it easier for engineers to build and ship strong products. What you will do Work with teams from different disciplines to refine and enhance developer workflows Contribute to the design and delivery of software solutions that raise the bar for developer productivity Help maintain and evolve internal tools and systems to support a smooth engineering experience

At WHOOP, we are dedicated to revolutionizing human performance and extending healthspan. Our mission is to empower individuals to achieve their best selves by fostering a deeper comprehension of their bodies and daily routines.In this exciting entry-level position, you will play a vital role in the development and maintenance of Android features designed to help our members lead healthier lives through insightful data analysis. You will work alongside seasoned engineers, gaining exposure to industry best practices while contributing to a product that positively impacts health outcomes on a broad scale. This growth-oriented opportunity is perfect for engineers eager to learn, make meaningful contributions, and advance their technical expertise in a dynamic, purpose-driven environment.

At WHOOP, we are dedicated to revolutionizing human performance and extending healthspan. Our mission is to empower individuals to reach their optimal potential by providing comprehensive insights into their physiological well-being through our cutting-edge wearable technology. By continuously monitoring vital metrics, we deliver personalized recommendations that enhance fitness, health, and recovery.The Growth Team at WHOOP embodies a dynamic, fast-paced, and experimentation-focused environment. Our primary objective is to drive user acquisition, activation, and retention through a data-driven approach. We rigorously evaluate the performance of our features and iterate based on quantifiable results.As a Software Engineer II on the Growth Team, you will play a pivotal role in developing features that significantly influence our business metrics and member growth. Your collaboration with cross-functional teams will be essential in designing, measuring, and refining high-impact mobile experiences that resonate with our users.

WHOOP is on a transformative journey to enhance human performance and extend healthspan through our innovative wearable technology. As a Lead Senior iOS Engineer on our Core team, you will be instrumental in architecting and optimizing the foundational elements of the WHOOP iOS application. Your role will encompass driving platform capabilities, enhancing shared architecture, and implementing performance improvements that enable quicker delivery for our product teams while ensuring an exceptional user experience for our members. You will take charge of the technical planning for intricate projects, provide mentorship to fellow engineers, and elevate engineering standards across the iOS ecosystem.

About SunoSuno is a transformative music company dedicated to unleashing creativity. With our cutting-edge AI music model, we provide an innovative platform featuring Suno Studio, a revolutionary generative audio workstation. Whether you are a casual shower-singer, an aspiring songwriter, or an established artist, Suno enables a diverse global community to create, share, and explore music, making the joy of musical expression accessible to everyone.About the RoleWe are seeking a dynamic Growth Engineer to become an integral part of our innovative team. This role is ideal for individuals who are enthusiastic about leveraging engineering skills to enhance user acquisition and engagement. You will collaborate closely with our product and growth teams, employing data and technology to create compelling experiences that introduce Suno to millions of new users.Discover more about this opportunity at Suno!Your ResponsibilitiesDesign and refine features that propel growth, enhance onboarding, and boost engagement for Suno’s music applications.Conduct data-driven experiments aimed at optimizing user acquisition, retention, and conversion rates.Collaborate with product and marketing teams to create systems for analyzing user behavior, identifying growth opportunities, and driving Suno’s expansion.Build scalable, high-performance systems and integrations to support growth initiatives and marketing campaigns.Your QualificationsA minimum of 5 years of experience in engineering, growth, or a related technical field.In-depth experience in full-stack development, preferably with a focus on growth engineering or analytics.Demonstrated expertise with data pipelines, analytics platforms, and user tracking tools (experience with Segment, Amplitude, Mixpanel, Statsig, and/or Snowflake is advantageous).Ability to transform data into actionable insights and strategies.Web development experience (React, Typescript, NextJS) is beneficial.A strong passion for rapid iteration and a commitment to delivering exceptional user experiences.A genuine love for music and a spirit of experimentation is a significant plus.Bachelor's degree or equivalent is required.

Join usm2 as a Network Engineer II, where you will play a crucial role in designing, implementing, and maintaining our network infrastructure. You will collaborate with cross-functional teams to ensure network reliability and performance, while troubleshooting and resolving issues as they arise.

At WHOOP, we are driven by a mission to enhance human performance and prolong healthspan. Our innovative platform empowers individuals to achieve peak performance through a profound understanding of their bodies and daily habits. We process vast amounts of real-time data from users focused on health and wellness, as well as the world’s elite athletes and sports teams, necessitating a highly reliable and fault-tolerant product.Join our Connectivity Software Team, where we create the essential connection between WHOOP hardware, the iOS application, and the cloud infrastructure. As a Senior iOS Engineer on this team, you will design and implement software that facilitates seamless communication between WHOOP’s wearable sensors and the mobile platform. Your expertise will help develop and optimize connectivity experiences that are not only robust and efficient but also seamlessly integrated, ensuring a reliable flow of data throughout our ecosystem.

About WHOOP WHOOP helps people improve their health and performance. The company’s wearable device tracks key physiological data such as heart rate variability, resting heart rate, and sleep quality. Members receive personalized insights to support fitness, recovery, and overall well-being. Role Overview The iOS Software Engineer I will help build and maintain member-facing features for WHOOP’s iOS app. This role works with advanced generative AI tools to deliver new ways for members to understand and improve their health. Collaboration with engineers, designers, and product managers is central to the work, with a shared goal of creating clear, actionable insights for users as they navigate their WHOOP experience. Location Boston, MA

About WHOOP WHOOP helps people reach their personal best by delivering deep insights into health and daily life. Our platform manages continuous streams of data from both everyday users and elite athletes. This requires a product that stays highly available and reliable at all times. Role Overview: Lead iOS Engineer (Connectivity) The Connectivity Software Team connects WHOOP hardware, the iOS app, and our cloud systems. As a Lead iOS Engineer focused on connectivity, you will design and build the software that enables smooth communication between WHOOP’s wearable sensors and the iOS platform. This work is central to keeping data flowing reliably across our ecosystem. What You Will Do Develop and refine connectivity solutions for WHOOP’s iOS application. Ensure seamless integration between wearable devices, the mobile app, and cloud infrastructure. Optimize data transfer to maintain dependable, efficient performance for all users. Support a user experience that feels smooth and reliable, even as data moves across devices and the cloud. Location Boston, MA

Role Overview Speechify is hiring a Software Engineer to work on the iOS Core Product in Boston, MA. This position centers on building applications that improve how users experience reading on iOS devices. What You Will Do Develop and refine iOS applications as part of the core product team Work closely with engineers and designers to deliver features that make reading easier and more enjoyable Contribute ideas and technical solutions aimed at improving accessibility for users Location This role is based in Boston, MA, USA.

Location: Waltham, MA (Hybrid – 3 days in office) Next Insurance is looking for a Backend Engineer to join the Development Experience Team. This position centers on platform engineering, with a focus on supporting U.S.-based teams and connecting their needs with global infrastructure projects. Role overview This role takes a lead position in shaping the strategy for an Agentic (AI-based) Software Development Life Cycle. The goal is to move beyond simple automation and build a future where AI agents support every stage of the SDLC, from design to deployment. Deep backend coding skills are essential, as the work will directly influence how U.S. engineering teams adopt and benefit from these AI-driven tools. Key responsibilities Act as a technical anchor for local platform engineering initiatives. Bridge U.S. engineering needs with global infrastructure efforts. Architect and maintain Next Insurance’s cloud-only infrastructure, treating the platform as a product. Identify platform challenges and lead projects that improve developer experience and drive business value. What you will work on Develop and refine tools and processes to enhance the software development life cycle using AI agents. Work across a wide range of cloud and application infrastructure technologies. Collaborate with engineering teams to understand pain points and deliver solutions that make daily work more efficient. Since 2016, Next Insurance has provided fast, customized, and affordable coverage to small businesses across the U.S. The company continues to grow with support from leaders in both insurance and technology, aiming to transform the customer experience and empower entrepreneurs everywhere.

WHOOP, Inc. builds wearable technology to help people improve fitness, health, and recovery. The company’s mission centers on empowering members with insights into their bodies and routines, aiming to extend healthspan and enhance performance. Role Overview The Senior iOS Engineer, Healthcare Innovations, joins the Healthcare team in Boston, MA. This role focuses on developing and maintaining the infrastructure that powers WHOOP’s medical features within the iOS app. The work supports secure and scalable delivery of Medicare and Medicaid services, as well as clinical and behavior-change initiatives. What You Will Do Drive platform capabilities and optimize shared architecture for the iOS application. Enhance reliability and performance, ensuring the app meets healthcare standards and regulatory requirements. Lead technical planning for complex, highly regulated projects. Develop features that support measurable habit improvement and healthier lifestyles for WHOOP members. Mentor fellow engineers and help raise engineering standards across the team. Impact Work in this role directly supports WHOOP’s medical offerings and clinical programs, helping members make meaningful changes to their health and routines.

FieldAI is at the forefront of revolutionizing robot interactions with the real world. Our dynamic R&D team, based in Boston, is committed to developing risk-aware, reliable, and field-ready AI systems that address the most challenging problems in robotics and unleash the potential of embodied intelligence. We adopt a pragmatic methodology that transcends traditional off-the-shelf and purely data-driven approaches, integrating cutting-edge research with practical deployment. Our solutions have been successfully implemented globally, and we continuously enhance model performance through rapid iterations informed by real-world applications.We are looking for a seasoned Senior Engineering Manager to lead an agile, high-performing team of research scientists and engineers at the cutting edge of robotics AI. In this pivotal role, you will craft and implement research strategies, oversee the creation of advanced AI algorithms, and steer initiatives from initial research to real-world deployment on physical robotic systems. You will harmonize deep technical leadership with effective people management, ensuring scientific excellence and tangible impact on the field.This is your chance to influence the future of robotic autonomy by transforming groundbreaking research into systems that function reliably in complex, dynamic environments on actual robots.