Senior Software Engineer II - AI/ML

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.

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.

Role Overview Whoop is looking for a Senior Fullstack Software Engineer to join the AI Platform team in Boston, MA. This team builds technology that supports athletic performance and wellness, using artificial intelligence to deliver real impact. What You Will Do Design, implement, and optimize software solutions across both frontend and backend systems Work closely with cross-functional teams to bring new features and improvements to life Focus on delivering a seamless user experience while maintaining system performance and reliability What We Look For Experience in fullstack development, with skills in both frontend and backend technologies Interest in artificial intelligence and its applications in health or performance domains Ability to collaborate with engineers, designers, and product managers If building innovative software for athletes and wellness interests you, Whoop encourages you to apply.

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.

About SimpliSafe SimpliSafe is a pioneering home security technology company dedicated to safeguarding your home and the life you've built. We are on a mission to ensure Every Home is Secure, and we foster a culture that equally values your career development. Join us in a collaborative, innovative environment where egos are left at the door and growth opportunities abound. We’re not just looking for employees; we want you to flourish and make a significant impact in the lives of those we protect. We embrace a hybrid work model, allowing our teams to balance their time between the office and their homes. This means we expect our team members to come together in our cutting-edge office on two core days of the week—typically Tuesday, Wednesday, or Thursday—while enjoying flexibility for the remaining days. Why are we hiring? As we continue to expand, we are in search of intelligent, skilled, and humble individuals who resonate with our values. Join us as we disrupt the home security industry and relentlessly pursue our mission of ensuring Every Home is Secure. Your Role As a Software Engineer II on the Video team at SimpliSafe, you will play a crucial role in developing and maintaining our cloud-based systems that facilitate live streaming and video recording for SimpliSafe cameras. Your expertise will support backend microservices responsible for ingesting, processing, storing, and delivering real-time video to customers, monitoring agents, and machine learning systems. In this safety-critical domain, reliability, performance, and simplicity are paramount. You will collaborate closely with fellow engineers, product managers, and partner teams to design, implement, and enhance services that provide customers with confidence and visibility into their homes. Key Responsibilities Design, develop, and maintain backend services that enable live video streaming and recording at scale. Write clean, reliable, and thoroughly tested code using contemporary development tools and practices, with an emphasis on maintainability and long-term ownership. Enhance system reliability, performance, and observability through thoughtful design and iterative improvements. Collaborate with senior engineers to adopt best practices for designing and operating distributed systems. Engage in operational responsibilities, including on-call duties, incident response, and post-incident analysis. Participate in design discussions and contribute to the technical direction of the team. Document systems and processes to ensure knowledge sharing and continuous improvement.

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.

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.

Role overview Speechify seeks a Software Engineer to join the Platform team based in Boston, MA. The team’s work underpins the company’s goal of making reading accessible, focusing on software that can handle growth and evolving user needs. What you will do Collaborate with engineering, product, and design colleagues to deliver dependable platform features Design, build, and maintain software solutions that support a growing user base Participate in projects that improve the overall user experience

At WHOOP, we are dedicated to enhancing human performance and extending healthspan through innovative solutions. Our mission is to empower individuals to reach their peak performance and enjoy longer, healthier lives. Utilizing advanced AI technologies, we transform continuous physiological data into meaningful insights and actionable recommendations. The AI platform is vital to our vision, converting raw physiological signals into personalized guidance that our members can implement daily.We are seeking a Senior AI/ML Engineer to play a crucial role in scaling our AI-driven experiences, which include WHOOP Coach, AI-powered Support, and various intelligent features across our product suite. In this pivotal position, you will be responsible for overseeing essential components of the AI Platform that power our internal AI Studio, such as evaluation pipelines, fine-tuning workflows, LLM observability, and experimentation tools. You will collaborate closely with product teams and data scientists to translate real user needs into robust, impactful AI systems that evolve based on actual usage.

Axiomatic AI offers a Software Engineering Internship focused on Platform and DevOps. This position is available in Boston, US or Castelldefels (Barcelona), Spain. Role overview Interns will join experienced engineers to support platform reliability and efficiency. The work centers on refining development workflows and deployment processes. Projects often involve applying artificial intelligence to practical challenges. What you will do Collaborate with engineers to enhance platform performance Assist in improving development and deployment pipelines Contribute to initiatives that use AI in real-world applications Internship experience Direct involvement with current platform and DevOps methods Insight into active AI projects Work closely with a knowledgeable engineering team

Join our team at Klaviyo as a Senior AI Platform Engineer and be part of a transformative journey in the AI and machine learning landscape. We are looking for an innovative engineer who is passionate about designing and scaling backend systems that power cutting-edge AI products and solutions. In this role, you will have the opportunity to influence architecture decisions, enhance asynchronous processing, and work with distributed systems. Collaborate with product managers, machine learning engineers, and data scientists to create impactful solutions for over 167,000 customers globally. This hybrid role is based in the vibrant city of Boston, where creativity and technology converge.

Location: Boston, MA; Costa Mesa, CA; Seattle, WA About Anduril Industries Anduril Industries builds advanced defense technology for the U.S. and allied nations. The company’s systems run on Lattice OS, a platform that fuses thousands of data streams into a real-time, 3D command and control environment. Anduril focuses on delivering autonomy, AI, computer vision, sensor fusion, and networking solutions to military operations quickly, often in months rather than years. Team Overview: Developer Platform The Developer Platform team provides the backbone for software development at Anduril. This group manages the main developer CLI, which sees over 93,000 uses by more than 2,300 engineers. CI/CD pipelines support 3,500+ engineers across 23 product lines in the U.S., Australia, and the U.K. The team also handles deployment and release management systems, as well as the company’s LLM adoption platform. Now, the team is launching a new agentic development initiative to build next-generation AI-centric developer infrastructure. What You Will Do Build infrastructure for multi-agent orchestration, enabling AI coding agents to operate autonomously on servers and manage tasks across repositories at scale. Develop a real-time, agent-optimized knowledge base that gives AI agents detailed context about codebases, architecture, and operational patterns. Create a skills and plugin platform so teams can encode domain expertise into reusable AI features. Improve CI/CD reliability and the developer experience across 23 product lines. Design and refine release tools to simplify software deployment to production and robotic platforms. Oversee and enhance Anduril’s LLM adoption platform, including model rollouts, capacity planning, cost tracking, and developer onboarding.

Role Overview Whoop is hiring a Software Engineering Manager to lead the Translations Platform team in Boston, MA. This manager will guide a group of engineers focused on improving and expanding the company’s translation technology. The team’s work supports products used by millions around the world. What You Will Do Oversee engineering projects that enhance Whoop’s translation capabilities Mentor and support a team of engineers, helping them grow and deliver strong results Promote a culture of collaboration and continuous improvement within the team Shape the direction of translation technology across Whoop’s products Impact Your leadership will help drive innovation in Whoop’s translation platform, making a direct impact on the experience of users worldwide.

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.

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.

Acadian Asset Management is a pioneering global systematic investment manager, leading the charge in data-driven investing since 1986. With our headquarters in Boston and offices in Singapore, London, and Sydney, we oversee more than $170 billion for esteemed institutions worldwide, including pension funds, endowments, foundations, and sovereign wealth funds. Our approach utilizes cutting-edge technology, extensive datasets, and interdisciplinary expertise to guide clients through complex markets and reveal insights that traditional methods may overlook.What truly differentiates Acadian is our team. We cultivate a collaborative and intellectually curious workplace where ideas are challenged, diverse perspectives are valued, and innovation flourishes. United by a common goal, we are committed to delivering exceptional client outcomes while supporting each other in work that is both demanding and fulfilling. Our flexible hybrid work environment, comprehensive benefits, and a casual yet focused office culture are designed to foster the meaningful, collaborative work that defines Acadian.Position Overview:The Platform team plays a crucial role in developing and maintaining services that empower our development teams to utilize frameworks, tools, and services across in-house and vendor PaaS/IaaS platforms. This team defines the architectural roadmap, establishes best practices, and provides training on these services. In this role, you will collaborate with a cross-functional team responsible for implementing and managing our investment infrastructure, concentrating on creating reusable application templates, delivery patterns, and operational support for our systems deployed on AWS and Kubernetes.

Join Klaviyo as a Software Engineer II on our Flows Platform team! As a key contributor, you will help design and implement scalable solutions that enhance the user experience and streamline workflows. This is an exciting opportunity to be part of a dynamic team that values innovation and collaboration.

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.

Anduril Industries stands at the forefront of defense technology, dedicated to revolutionizing military capabilities for the United States and its allies through cutting-edge innovation. Our mission is to integrate the expertise, technology, and business models of the most pioneering enterprises into the defense sector, fundamentally transforming the design, construction, and commercialization of military systems. Our suite of solutions is driven by Lattice OS, an AI-enhanced operating system that consolidates thousands of data streams into a dynamic, 3D command and control environment. As we navigate the complexities of global strategic competition, Anduril is devoted to delivering state-of-the-art autonomy, artificial intelligence, computer vision, sensor fusion, and networking technologies to military operations in a matter of months, not years.ABOUT THE TEAMThe Developer Platform team is the foundation of Anduril’s engineering ecosystem, creating essential infrastructure that empowers teams to deploy mission-critical defense systems effectively. In this role, you will refine release pipelines and CI/CD workflows that power Anduril's Software Factories across the U.S., Australia, and the UK. You will also develop productivity-enhancing tools, including our Golang-based dx CLI, while architecting data infrastructure to derive actionable engineering metrics and KPIs. Your contributions will significantly enhance productivity throughout our software engineering landscape, establishing a scalable foundation that aligns with Anduril’s growth and its mission to tackle pivotal defense challenges through advanced technology.