Senior Full Stack Developer – Frontend & Backend

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.

Join WHOOP on our mission to enhance human performance and extend healthspan. We empower our members with insights drawn from advanced wearable technology that translate complex physiological data into personalized experiences, fostering improved fitness, health, and recovery.The Growth Team is a dynamic, fast-paced unit dedicated to driving user acquisition, activation, engagement, and retention. As a Software Engineer I on this team, you will play a vital role in developing and optimizing user-facing web experiences that influence key business and member metrics. Collaborating closely with seasoned engineers, product managers, and designers, you will help deliver high-quality features, conduct experiments, and continuously enhance the member journey.

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.

Join Our Team as a Senior Frontend EngineerWe are seeking a talented Senior Frontend Engineer to become a vital part of our innovative team in Boston. This role provides a unique opportunity for a passionate and skilled engineer to enhance their career with an industry leader.Position Overview: You will be responsible for developing high-quality user interfaces, ensuring optimal performance and responsiveness of applications, and collaborating with cross-functional teams to define, design, and implement new features.

About SunoSuno is a revolutionary music company dedicated to enhancing creativity through technology. By harnessing the power of cutting-edge AI music models, we provide an extraordinary platform for creativity, featuring Suno Studio—a pioneering generative audio workstation. Whether you’re a casual singer, an aspiring songwriter, or a professional artist, Suno is here to support a worldwide community in creating, sharing, and discovering music, making musical expression accessible to everyone.About the RoleWe are on the lookout for talented individuals to join our web development team. As an integral part of our founding team, you will have the opportunity to influence key technical and design decisions for Suno’s web applications.What You’ll DoCraft and develop innovative web applications for music creation, exploration, and listening.Establish foundational abstractions and libraries for high-performance, interactive audio experiences.Participate in design and product decisions throughout the application lifecycle.Enhance the performance, aesthetic appeal, and user satisfaction of our products.What You’ll NeedAt least 7 years of experience in delivering production-quality web applications.Proficient in Typescript, React, NextJS, and CSS.Demonstrated experience in building complex, responsive web applications, with a knack for translating prototypes into robust and maintainable code.A passion for delivering exceptional user experiences, with attention to detail, rapid iteration, and a strong work ethic.A genuine love for music—whether it’s listening, exploring, or creating—is a significant advantage.Bachelor's degree or equivalent experience required.Additional Notes: Applicants must have the legal right to work in the US.Perks & Benefits for Full-Time EmployeesEquity participation in the company.401(k) plan with a 3% employer match and Roth 401(k) option.Comprehensive medical, dental, and vision insurance (PPO with HSA and FSA options).11 paid holidays plus unlimited paid time off and sick leave.16 weeks of paid parental leave.

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 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.

Empower decision-makers with timely insights at Code Metal. Here, real-time physics simulations, AI-driven insights, and operational actions coalesce into expansive data streams. As the lead for our Visualization & Frontend team, you will transform this overwhelming influx of information into sophisticated, impactful experiences that inform multi-billion-dollar strategic choices in force design, guided by wargaming principles. We seek a hands-on architect to construct a modular UI stack, navigate complex geospatial and temporal data, and mentor a select group of talented engineers to deliver high-quality products swiftly.Your Responsibilities Architect an innovative UI framework: Create a component library and plugin architecture that enables internal teams and future partners to enhance visualizations without altering the core codebase. Render data at scale: Develop responsive visualizations that combine live simulation outputs, AI insights, and historical data into a seamless, interactive timeline. Integrate smoothly: Utilize FastAPI/ZeroMQ endpoints from the backend and provide well-versioned client APIs for mission planning and dashboards. Collaborate with stakeholders and UX design leads: Continuously refine user experience based on performance metrics and feedback from Air Force wargamers and UX specialists. Lead by example: Promote UI/UX best practices, conduct code reviews, participate in design critiques, and implement automated testing; support team members in becoming force multipliers. Continuous deployment: Manage the CI/CD pipeline for web and desktop applications, with a focus on DoD accreditation and cross-domain distribution. Why Join Code Metal? Impactful mission: Your visualizations will contribute to discussions that shape the future of military force structure. Agility: Work in tight iterations with small teams—design in the morning and deploy by evening. Ownership: No bystanders here—every engineer plays a crucial role in shipping meaningful code.

Role Overview Whoop, Inc. is hiring a Software Engineer II focused on frontend development for its AI Platform in Boston, MA. This position centers on building and improving user interfaces that support the company’s fitness technology products. What You Will Do Work with teams across engineering, design, and product to deliver polished, intuitive user interfaces Contribute to the design and implementation of features that expand the platform’s capabilities Help shape the user experience for tools that support Whoop’s mission to unlock human performance What We’re Looking For Experience with modern frontend technologies Interest in building high-quality, engaging user experiences Strong collaboration skills and the ability to work with cross-functional teams This role is based in Boston, MA.

Join our dynamic team at sevenai as a Senior Frontend Engineer. In this pivotal role, you will be responsible for crafting and developing the user-facing elements of our advanced AI-driven cloud platform. Your expertise will enable you to design scalable and high-performance web interfaces that simplify complex cybersecurity functions, making them user-friendly and accessible.As our platform evolves towards greater AI integration, your role will focus on creating interfaces that promote explainability and trust in these intelligent systems. You will play a crucial role in helping users comprehend AI decision-making processes, transforming model outputs and security insights into clear, actionable, and transparent user experiences.As a senior member of our engineering team, you will influence our frontend architecture, provide mentorship to junior engineers, and collaborate closely with design and product teams to deliver outstanding, insight-driven user experiences.

Join the Future of Financial Data!At Akoya, we are pioneering an API-based network supported by leading financial institutions to create a secure and transparent method for individuals to share their personal financial data with third-party applications. If you are passionate about cutting-edge technology that addresses real-world challenges, we invite you to join us in revolutionizing the way financial information is accessed and exchanged. Our vibrant and collaborative workplace fosters creativity and diversity, bringing together professionals with expertise in banking, securities, fintech, and data aggregation. As an equal opportunity employer, we encourage you to become part of our exciting journey – visit www.akoya.com for more details!Your RoleWe are on the lookout for a Principal Software Engineer (Frontend) to spearhead the development of our next-generation user experiences and frontend architecture. This position is perfect for a seasoned engineer who upholds high design standards, possesses advanced skills in modern JavaScript and React, and can drive technical strategies across intricate products. You will combine meticulous attention to detail with excellent communication skills and a fervor for crafting elegant, scalable, and user-friendly interfaces that empower our clients.As a Principal Engineer, your responsibilities will include:Leading the design and execution of Akoya's core frontend architecture, establishing benchmarks for code quality, performance, accessibility, and maintainability.Guiding the modernization of existing frontend systems, ensuring reliability of legacy components while transitioning them to more scalable, efficient, and maintainable frameworks.Writing clean, well-organized, and thoroughly documented code using React, TypeScript/JavaScript, and contemporary frontend tools.Collaborating closely with product managers, designers, and backend teams to define requirements and deliver polished, high-quality user experiences.Debugging and resolving complex production challenges across the frontend stack, ensuring robust and resilient interfaces.Enhancing the engineering team through mentorship, architectural guidance, and code reviews, enabling teams to achieve excellence.Promoting frontend best practices including performance optimization, component system design, and user experience improvements.

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.

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.

Join OpenGov as a Senior Software Engineer and become part of a dynamic team dedicated to transforming how governments operate. In this role, you will lead the design and development of innovative software solutions that empower public sector organizations to enhance transparency and efficiency.

At Hi Marley, we understand that insurance plays a crucial role in people's lives during their most challenging times. Our mission is to revolutionize communication within the Property and Casualty (P&C) industry, making those pivotal moments quicker, simpler, and more empathetic for both carriers and their customers. We harness the power of AI-driven software to keep the claims conversation both informed and connected. If you share our vision of merging operational excellence and automation with a human touch, we’d be thrilled to connect with you.As we expand our team, we are seeking a Senior Software Engineer who is enthusiastic about crafting high-quality software that creates a tangible impact. You will be instrumental in delivering distributed and scalable systems that facilitate meaningful interactions between carriers and their clients. The ideal candidate should have a proven track record of developing within cloud environments and a pragmatic, hands-on approach to innovation—leveraging cutting-edge technologies, including AI-assisted development tools, to tackle complex challenges and yield significant results.Collaboration and shared enthusiasm are foundational to our culture, which is why this position entails being present in our Boston office two days a week.

Join our team as a Senior Software Engineer, where you'll play a pivotal role in developing innovative hiring solutions that empower organizations like Netflix, Shopify, and Spotify. We are dedicated to transforming the recruitment landscape and are seeking talented individuals to help us scale our impact.

A fulfilling career awaits you!At Conga, we foster a community where our team members can truly flourish. Here, you'll discover ample opportunities for innovation and personal growth, all within a collaborative environment that values every opinion.Conga propels businesses on their journey to becoming more interconnected and intelligent. Our Conga Advantage Platform is globally acknowledged for enhancing this journey by merging Configure, Price, Quote, Contract Lifecycle Management, and Document Automation into a unified, open platform. It integrates effortlessly with any ERP, CRM, and Cloud system. Leveraging a cohesive data model and tailored AI, Conga empowers organizations to achieve a distinctive advantage, characterized by seamless connectivity, actionable insights, and scalable growth.Our methodology is rooted in the Conga Way, a guiding framework that embodies our values and influences all aspects from hiring to decision-making processes, including key initiatives like employee recognition. Developed with direct contributions from our employees, the Conga Way is the cornerstone of our vibrant culture.

At Later, we redefine influencer marketing by harnessing the power of genuine creator relationships and cutting-edge technology. Our AI-driven platform, backed by over a decade of proprietary data—including billions of social interactions and more than $2.4 billion in verified influencer-driven purchases—provides brands the confidence to craft unforgettable campaigns. With our expert guidance, brands can navigate the complexities of influencer marketing to maximize their impact on awareness, engagement, and revenue. Trusted by industry leaders like Nike, Wayfair, Unilever, and Southwest Airlines, Later seamlessly blends creativity with performance to ensure that every campaign not only looks exceptional but also delivers tangible results. Discover more at later.com.About the role:The Senior Software Engineer will play a pivotal role in driving significant projects, implementing impactful features, and upholding our high engineering standards. You will tackle complex challenges, collaborate across various teams, and mentor junior engineers while continually enhancing our codebases and promoting a culture of technical excellence. With profound expertise in contemporary software development and Agile methodologies, you'll influence product velocity and engineering culture.Your Responsibilities:Strategic LeadershipDefine, plan, and lead the delivery of extensive features and roadmap initiatives.Clarify and refine requirements among stakeholders in a dynamic environment.Navigate ambiguous requirements and divergent interests to deliver features that excite users.Contribute to long-term architectural planning and system design.Technical ExecutionLead the resolution of complex technical challenges across teams and production environments.Continuously improve code quality, system performance, and engineering practices.