Backend Engineer

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 acr…

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 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 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 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.

Join us in transforming how the Department of Defense approaches multi-billion-dollar force-design decisions. As a Senior Backend Platform Engineer, you will integrate physics-driven simulations, interactive computing, and validated AI code generation to develop cutting-edge wargaming platforms. If the prospect of creating ultra-low-latency APIs, managing high-volume geospatial data, and leading with clean, production-ready Python excites you, we want to hear from you!Your ResponsibilitiesOwn the service layer: Design, build, and scale FastAPI microservices and ultra-fast ZeroMQ messaging pipelines in Kubernetes and bare-metal clusters.Wrangle data at speed & scale: Shape and query multi-TB Postgres/PostGIS datasets, orchestrate Redis for sub-millisecond state, and ensure stability under bursty loads.Glue the stack together: Expose crisp, well-versioned REST & WebSocket endpoints for the frontend team and simulation kernel.Ship continuously: Automate CI/CD, observability, and security hardening to meet DoD standards; deploy to production with confidence.Lead by example: Drive code reviews, mentor team members, and set the standard for test coverage and documentation.Why Choose Code Metal?Mission with Impact: Your work will contribute to the digital infrastructure of modern battlefields, influencing multi-billion-dollar defense acquisitions.Velocity: Work in tight-knit teams with weekly releases and no bureaucratic delays.Ownership: Every engineer is empowered to ship significant code without being a passenger.

Role Overview Datadog is looking for a Senior Software Engineer focused on Distributed Systems to join teams in Boston, MA or New York, NY. This role centers on designing, building, and maintaining the core platforms that power Datadog’s applications. These systems handle data at massive scale, supporting real-time ingestion, storage, analysis, and querying of billions of events from customers worldwide. What You Will Do Design and implement distributed data pipelines built for durability, high availability, and low latency Operate and improve platforms that support internet-scale workloads Ensure systems are reliable and efficient for real-time analytics Workplace and Culture Datadog values a lively office culture that encourages creativity, teamwork, and strong connections among colleagues. The company offers a hybrid workplace model to support work-life balance.

At WHOOP, our mission is to enhance human performance and healthspan. We empower our members to reach new heights by providing them with valuable insights into their bodies and daily lives.We are seeking a talented Software Engineer II to bolster our Business Systems team. In this pivotal role, you will be responsible for designing, developing, and maintaining internal tools and integrations that are crucial for our business operations. You will collaborate cross-functionally with various teams at WHOOP to ensure our systems are scalable, reliable, and efficient, thus significantly impacting our ability to serve our members and scale our business.

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.

FieldAI is at the forefront of revolutionizing the interaction between robots and the real world. Based in Boston, our dynamic R&D team is dedicated to developing AI systems that are risk-aware, reliable, and ready for field deployment. Our solutions address some of the most challenging problems in robotics, unlocking the full potential of embodied intelligence. We pride ourselves on a pragmatic approach that combines cutting-edge research with practical deployment, moving beyond standard data-driven methods and transformer-only architectures. Our systems are already deployed worldwide, and we are committed to continuous improvement through rapid iterations based on real-world applications.We are looking for enthusiastic engineers to join our team and contribute to the advancement of our humanoid robot software stack. In a fast-paced environment, you will collaborate with a focused team to integrate various subsystems such as perception, planning, locomotion, and manipulation into a seamless, reliable system that operates effectively in unstructured real-world environments. A key responsibility will be to transition research-grade capabilities into robust, production-quality systems. The ideal candidate will possess a solid understanding of robotic software systems and demonstrate the practical skills necessary for delivering high-quality, maintainable code within a small, dedicated team.

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 Anduril Industries as a Senior Software Engineer specializing in Flight Management Systems. In this pivotal role, you will design, develop, and implement software solutions that enhance our advanced flight management technologies. You will work closely with cross-functional teams to ensure high-quality software delivery and contribute to innovative projects that push the boundaries of technology.

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, 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 Anduril Industries, we're on a mission to revolutionize defense technology for the U.S. and allied military forces. By integrating innovative expertise and cutting-edge technology, we're transforming how military systems are designed, built, and sold. Our advanced Lattice OS powers a sophisticated AI-driven command and control center that synthesizes thousands of data streams into actionable insights. In this new era of strategic competition, we're dedicated to delivering breakthrough advancements in autonomy, AI, computer vision, sensor fusion, and networking technology to the military within significantly reduced timelines.About the TeamOur Maritime Division is comprised of a diverse group of specialists in software, robotics, AI, sensor fusion, and data analysis, all working together to create advanced software and hardware solutions that significantly enhance our clients' capabilities. We're at the forefront of deploying next-generation autonomous systems designed to meet the demanding challenges of maritime operations. Our innovative offerings include a unique ultra-long-range underwater vessel platform and a versatile maritime vehicle architecture that can scale from small to extra-large sizes. Currently, we're engaged in high-value contracts while also executing Robot-as-a-Service (RaaS) AUV operations.To continue our momentum, we are heavily investing in an expanded product portfolio that includes Dive-XL, Dive-LD, Copperhead, Seabed Sentry, and other upcoming systems. These products are designed to create a cohesive system-of-systems approach, enabling comprehensive execution of various autonomous missions in the maritime domain. If you are driven to solve impactful challenges and contribute to national strategic priorities, we invite you to join our Maritime Division and help us shape the future of defense capabilities.About the JobAs a Senior Software Engineer, you will independently lead the development of a range of embedded and safety-critical software integrated into our products. Responsibilities include the management of devices, drivers, firmware, power management, networking, as well as contingency management and recovery. We expect our Senior Software Engineers to take ownership of outcomes at both the major subsystem and system levels. You will serve as a technical lead, guiding the rapid architecture, design, delivery, support, and evolution of next-generation autonomous platforms throughout their entire product lifecycle.

About You: We are on the lookout for a seasoned Senior Software Engineer to lead the design, implementation, testing, and certification of flight-critical autonomy algorithms for cutting-edge aerospace systems. In this pivotal role, you will harness MathWorks tools to develop model-based flight software and oversee the complete lifecycle of DO-178C compliant development.

COMPANY OVERVIEWKKR is a premier global investment firm specializing in alternative asset management and providing innovative capital markets and insurance solutions. Our mission is to deliver outstanding investment returns by employing a disciplined, long-term investment strategy, engaging top-tier talent, and fostering growth within our portfolio companies and the communities we serve. KKR sponsors a variety of investment funds targeting private equity, credit, and real assets, while also partnering with strategic affiliates managing hedge funds. Our insurance affiliates deliver retirement, life, and reinsurance products through Global Atlantic Financial Group, ensuring a wide range of financial solutions for our clients.TEAM OVERVIEWAt KKR, our Technology team is at the forefront of shaping the firm’s technological landscape. We view technology as a critical business enabler and a catalyst for global scalability and transformation of our business processes. Our culture of excellence is fueled by efficient workflow automation, democratization of data, and the strategic integration of cutting-edge technologies to meet our operational needs effectively.POSITION SUMMARYThe Investments Operations & Reference Data Technology Team plays a vital role in the design, development, and maintenance of KKR’s strategic business systems. These systems underpin investment trading, pre- and post-trade allocation, market and reference data management, trust compliance, cash management, and essential risk control reporting.Our technology solutions cater to a wide array of financial instruments, predominantly in Fixed Income, including investment-grade and high-yield bonds, commercial and residential mortgage loans, and various alternative asset-backed securities such as private securitizations. Additionally, the firm engages in derivative transactions to mitigate risks linked to annuity liabilities arising from our insurance sector.Collaboration is key; our team works closely with:Asset Allocation Team: Focused on optimizing asset-liability matching and facilitating periodic portfolio rotations to enhance yield.

Veeva Systems Inc. is a purpose-driven leader in the industry cloud sector, dedicated to accelerating the journey of life sciences companies in delivering therapies to patients more swiftly. As one of the fastest-growing SaaS enterprises in history, we achieved over $2 billion in revenue last fiscal year, with promising growth prospects ahead.At the core of Veeva's culture are our values: Integrity, Customer Success, Employee Empowerment, and Agility. We are not just another public company; we made history in 2021 by becoming a Public Benefit Corporation (PBC), legally committed to balancing the interests of customers, employees, society, and investors.As a Work Anywhere organization, we offer the flexibility to work from home or the office, allowing you to thrive in your preferred environment.Join us in transforming the life sciences sector, as we strive to create a positive impact on our customers, employees, and communities.The RoleWe are seeking multiple Senior Sustaining Software Engineers who are enthusiastic about working in a dynamic, startup-like atmosphere within a stable and profitable company. Our team tackles intricate challenges that influence the efficiency and speed of the life sciences industry. In this role, you will dive right in, identifying and resolving issues related to our Vault CRM product.

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.