Software Engineer II (Backend, Growth)

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.

At WHOOP, we are dedicated to transforming human performance and enhancing healthspan. Our mission is to empower members to achieve peak performance through a profound understanding of their bodies and daily lives. With our cutting-edge wearable technology, we monitor essential physiological metrics to provide tailored insights that boost fitness, health, and recovery.The Growth Team at WHOOP is a dynamic, results-oriented group committed to driving user acquisition, activation, and retention. Our data-centric approach enables us to continuously assess the effectiveness of our features and iterate based on those insights.As a Senior Backend Software Engineer, you will be instrumental in constructing backend services that significantly influence our business metrics and foster member growth. Collaborating cross-functionally, you will deliver impactful features and contribute to architectural decisions, ensuring WHOOP's scalability to millions of members.

Join Klaviyo as a Senior Software Engineer focused on Growth, where you'll play a pivotal role in enhancing our platform's capabilities. You will work closely with cross-functional teams to design, develop, and implement innovative solutions that drive user engagement and expand our customer base. This is an exciting opportunity to leverage your technical expertise in a dynamic environment.

Role Overview Whoop is looking for a Senior Frontend Software Engineer to work on growth-focused projects in Boston, MA. This role centers on improving user experience and increasing engagement across our platform. What You Will Do Work closely with teams from different disciplines to design and deliver new features and improvements. Develop scalable, efficient, and visually polished frontend applications. Apply frontend expertise to create solutions that support Whoop’s mission and meet user needs. What We’re Looking For Strong background in frontend technologies. Experience building user-facing applications with attention to performance and design. Ability to collaborate effectively with engineers, designers, and product managers.

At Toast, we are passionate about creating a revolutionary restaurant platform that empowers restaurants to reclaim their passion and focus on what they do best: nurturing their beloved businesses. We pride ourselves on being an unconventional tech company that thrives on innovation. Challenging the status quo is embedded in our culture. Building a transformative product necessitates forward-thinking, which is why we deeply value diverse backgrounds and experiences. Our mission is to enable restaurants of all sizes to assemble exceptional teams, boost revenue, streamline operations, and offer unforgettable guest experiences. By combining our extensive knowledge of the restaurant industry with robust cloud-based software and top-tier hardware, we deliver an intuitive all-in-one solution. Join us in our quest to uplift the restaurant community, delight guests, and help them flourish. Our Fintech division at Toast plays a pivotal role in our infrastructure by managing payments for restaurants and ensuring timely transactions. Payment processing is not only a vital revenue stream for Toast but also essential for our customers, as we handle millions of dollars in transactions daily. We are on the lookout for a Senior Software Engineer to enhance our Payments team and develop our unified payment processing platform. This solution provides a seamless, integrated service for accepting payments across various channels and supports a configurable enterprise approach. It is engineered to enable a build-once, available-to-all strategy for both existing and emerging payment methods. The right candidate will play a crucial role in creating services that provide essential support and functionality within this payment processing framework.

At WHOOP, we are dedicated to empowering individuals to enhance their performance and extend their healthspan. As a Senior Software Engineer on our Business Systems team, you will be instrumental in designing and implementing robust backend systems that drive WHOOP’s internal operations. Your efforts will facilitate scalability and operational efficiency across various departments, including Finance, Operations, and Member Services. By architecting and maintaining critical services and integrations, you will play a crucial role in ensuring that our systems are reliable, secure, and high-performing, ultimately helping WHOOP deliver exceptional value to our members and support our global growth ambitions.

About WHOOP WHOOP helps people understand their bodies and habits so they can perform at their best and improve their healthspan. The team builds tools and insights that support members in reaching their goals every day. Role Overview The Senior Backend Software Engineer - Health Records will design and build the systems that connect external healthcare data with the WHOOP platform. This work ensures health data is integrated securely and can scale as needs grow. The role focuses on transforming complex health records into insights that members can use, strengthening WHOOP’s ability to deliver personalized health experiences and long-term value.

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.

At WHOOP, we are driven by a commitment to enhancing human performance and extending healthspan. Our platform empowers a wide range of members, from Olympians and professional athletes to fitness enthusiasts, enabling them to achieve their peak potential by gaining profound insights into their bodies and daily lives. We are eager to welcome highly skilled and motivated engineers to join our team, propelling our established system to unprecedented heights. Join the AI Platform team at WHOOP where we are tasked with building a robust foundation that facilitates the scalable, responsible, and accessible implementation of Generative AI across our diverse array of products. Our primary focus is on creating reusable infrastructure, services, and tools that empower both product and software teams to explore, integrate, and deploy GenAI-powered features both efficiently and securely. By simplifying the complexities associated with large language models (LLMs) and ensuring the delivery of personalized insights to our members, our platform accelerates innovation while maintaining a consistent, high-quality user experience. As a Senior Software Engineer on the AI Platform team, you will play a pivotal role in designing and scaling the systems that underpin WHOOP’s Generative AI capabilities. You will develop robust, modular services and user-friendly tools that streamline the interaction with GenAI models across the organization. This position merges a platform-oriented mindset with engineering excellence, helping WHOOP unlock the full potential of Generative AI across our core products, coaching services, insights, and beyond.

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.

At WHOOP, we are dedicated to revolutionizing human performance and extending healthspan. By leveraging cutting-edge wearable technology, WHOOP empowers our members to achieve peak performance through an in-depth understanding of their physiological metrics and daily habits. Our devices monitor vital metrics to deliver personalized insights that optimize fitness, health, and recovery. As a Senior Software Engineer (Backend) concentrating on Core & Ecosystem, you will be instrumental in constructing and enhancing the robust systems that underpin the WHOOP member experience related to sleep, strain, and recovery. Your contributions will also facilitate the WHOOP connected experience for both new and existing partnerships, as well as external developer applications and supporting platforms. This team is charged with creating the infrastructure and shared services that drive data pipelines, algorithms, and scalability across our product. You will work closely with product management, design, data science, and your fellow engineers to architect and implement reliable, impactful backend systems that support features for our members. You will lead the technical planning for complex projects, mentor junior engineers, and elevate the standard of engineering excellence within the backend team.

Join our innovative team at Lever as a Backend Engineer, where you will play a pivotal role in crafting cutting-edge software solutions that transform the hiring landscape.At Lever, we are dedicated to revolutionizing the way companies recruit top talent. Our software is trusted by industry leaders like Netflix, Yelp, Cirque du Soleil, Shopify, and Spotify. As we continue to grow, we seek talented individuals who are passionate about redefining talent acquisition.We are proud to be recognized as the #1 workplace in San Francisco and a top employer in the United States. Our team, known as “Leveroos,” is our greatest asset, and we are committed to fostering a people-first culture that celebrates collaboration and innovation.

At WHOOP, our mission is to enhance human performance and extend healthspan. We empower our members to optimize their performance and longevity through profound insights into their bodies and daily routines. A critical aspect of our mission is safeguarding our members' data while ensuring our systems scale securely and reliably. We are seeking a talented Software Engineer II specializing in backend development to build and refine the systems that fuel our platform. This pivotal role will play a direct part in delivering scalable and secure services that support millions of members globally. While backend development expertise is essential, familiarity with cybersecurity principles (such as data privacy, authentication, and authorization) or cloud infrastructure concepts (including AWS, Infrastructure as Code, and Kubernetes) will be highly regarded. This position offers a unique opportunity to align with either our Product Security team, focused on security compliance and data privacy, or our Application Infrastructure team, which emphasizes scalability, reliability, and developer support. In either capacity, you will help shape core platform practices and contribute to WHOOP's growth trajectory.

At WHOOP, we are dedicated to revolutionizing human performance and extending healthspan. By empowering our members with a profound understanding of their bodies and daily activities, WHOOP enables individuals to achieve their peak potential.We are seeking a talented Software Engineer II to become an integral part of our Business Systems team. In this pivotal role, you will be responsible for designing and implementing robust backend systems that drive WHOOP's internal operations, fostering scalability and efficiency throughout the organization. You will architect and maintain essential services and integrations that support various functions, including Finance, Operations, and Member Services. By developing reliable, secure, and high-performance systems, you will have a direct impact on how WHOOP delivers unparalleled value to our members and scales on a global level.

At WHOOP, we are dedicated to enhancing human performance and extending healthspans. Our innovative enterprise platform empowers organizations in athletics, business, healthcare, and public service to gain deeper insights into the health and performance of their teams.As WHOOP Enterprise embarks on an exciting new phase of growth and reinvestment, we are seeking a passionate Senior Software Engineer to play a vital role in transforming our Enterprise platform. You will be responsible for developing core systems, influencing technical direction, and establishing a robust foundation for a scalable enterprise product.This position offers significant ownership and autonomy, allowing you to thrive in a product-ambiguous environment. You will help define excellence in our offerings and work closely with design, stakeholders, and leadership as we propel the platform forward.

WHOOP helps people understand their bodies and improve their health. Our platform supports members in reaching their goals by giving them deeper insight into daily performance and well-being. About the Role The Software Engineer II (Backend, Health Records) will focus on building systems that securely handle and process health data. This work supports the integration of external healthcare sources with WHOOP’s platform, making it possible to turn complex records into useful, actionable information. What You’ll Do Develop and maintain backend systems for health data ingestion and processing Ensure solutions are secure and scalable Help connect external healthcare ecosystems to WHOOP’s platform Transform raw health records into insights that support personalized health experiences Contribute to projects that expand WHOOP’s ability to deliver long-term value to members Location This role is based in Boston, MA.

Role overview This Backend Software Engineer II position at Whoop focuses on hardware acceleration. The work centers on building backend systems that support health and fitness tracking products. Scalability and efficiency are key priorities for these systems. What you will do Develop and maintain backend services that use hardware acceleration to boost platform performance Collaborate with other engineering teams to support both new and existing health and fitness tracking features Help ensure core backend services remain reliable and scalable Location This position is based in Boston, MA.

We are on the lookout for a highly skilled Senior Backend Software Engineer to become an integral part of our dynamic team. In this role, you will collaborate in the design, implementation, and deployment of our core data pipeline and processing platform for our innovative AI-native cloud environment. Your expertise will be pivotal in creating robust, scalable, and sophisticated solutions to tackle intricate cybersecurity challenges. You will take charge of selecting and implementing the essential technologies and architectures needed for success.Key Responsibilities:- Architect, implement, and maintain the foundational data pipelines and processing platform for our AI-native cloud services.- Develop high-quality, scalable, and elegant solutions for complex cybersecurity scenarios.- Evaluate and integrate appropriate technologies and architectures.- Guarantee the scalability, reliability, and performance of our cloud-based offerings.Qualifications:- A minimum of 7 years of experience in backend development.- Proven hands-on experience with cloud architecture and deployment.- Familiarity with a diverse array of cloud technologies and architectural frameworks.- Exceptional software development skills, coupled with a proactive, fast-paced approach to shipping solutions.- Bachelor's degree or equivalent in a relevant discipline.- Strong analytical thinking and communication abilities.About Seven AI:At Seven AI, we welcome professionals at all levels who are passionate about making a significant impact and thriving in a fast-paced, growth-oriented environment. With the rapid advancement of AI technology, this is an exciting time to join us, where your skills can influence the future of cybersecurity. You will engage with cutting-edge technology and spearhead innovative solutions while working alongside industry experts committed to safeguarding against emerging AI-driven threats. Our culture emphasizes respect, collaboration, and a shared dedication to delivering exceptional value to our clients. If you are enthusiastic about building remarkable solutions and desire to be in an environment where your contributions are valued, we would love to hear from you.

At WHOOP, we are dedicated to enhancing human performance and extending healthspan. Our mission is to empower individuals to achieve their peak potential by providing in-depth insights into their physiological data through our advanced wearable technology. This technology tracks essential metrics to deliver personalized feedback that enhances fitness, health, and recovery.As a Software Engineer I, you will play a pivotal role in the design, development, and upkeep of the services that underpin WHOOP’s essential product experiences. Collaborating closely with seasoned engineers, product managers, designers, and data scientists, you will contribute to creating scalable and dependable systems that provide valuable insights to our users. This position is perfect for those eager to learn, produce high-quality code, and make a significant impact within a dynamic, mission-driven environment.

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.