Staff Backend Engineer - Foundational Systems and Platforms

Join us as a Staff Backend Engineer in Foundational Systems and Platforms (FSP) at Coupang!At Coupang, we are dedicated to delivering an exceptional customer experience. Our mission is to transform the way people shop, eat, and live, making it easier and more enjoyable than ever. As one of the fastest-growing retail companies in South Korea, we have built a strong reputation as a reliable leader in the commerce industry.We combine the agility of a startup with the resources of a global public company, enabling us to innovate and launch new services at an unprecedented pace. We invite you to be part of our exciting journey to redefine retail!

Role Overview Gomotive is hiring a Staff Platform Engineer to help shape and improve the core technology behind our mobility and connectivity products. This hybrid position is based in Seattle. What You Will Do Work with teams across engineering, product, and design to build and refine platform components Design, develop, and optimize systems that support Gomotive’s products Contribute technical expertise to solve complex challenges in platform architecture Work Environment This role is hybrid, with work based in Seattle. Collaboration with colleagues from multiple disciplines is a key part of the job.

Coupang is a leading name in South Korean e-commerce, known for dependable service and rapid innovation. With offices in Mountain View and Seattle, the company blends a startup’s drive with the backing of a global public organization. The culture supports both individual growth and strong teamwork. Initiative is valued at Coupang. Team members often launch new projects and play a direct role in shaping the company’s direction. Entrepreneurial thinking is encouraged, and those who drive improvements are recognized for their impact on both personal and company development. Coupang’s ambitions reach beyond standard commerce. The company regularly tackles challenging projects, always looking for new ways to improve technology and customer experience. Role overview The Senior Staff Backend Engineer will be part of the Application Infrastructure team. This group is responsible for building and enhancing complex workflow systems that power Coupang’s core services, including the rocket delivery platform. Their work supports systems that manage hundreds of millions of dollars in revenue. What you will do Design and develop a new, scalable workflow service from the ground up Make workflow development easier for domain teams Ensure the infrastructure can support growing business demands Help shape a critical system at the center of Coupang’s operations

As a Staff Systems Engineer specializing in Warfighter Systems at Anduril Industries, you will play a crucial role in developing and integrating cutting-edge systems that support our military operations. You will work collaboratively with a talented team to innovate solutions that enhance our national security.

Coupang stands out as a major e-commerce company in South Korea, recognized for its reliability and drive to innovate. The company blends the energy of a startup with the scale and resources of a global public business. Teams move quickly, launching new services and growing rapidly. Employees are encouraged to take ownership and help shape the future direction of commerce. Role overview The Staff Backend Engineer - Application Infrastructure will be part of the Application Infrastructure team, working on foundational systems that support Coupang’s complex workflows. This position is greenfield, offering the chance to design and build core backend infrastructure from the ground up. The systems developed will enable fast workflow creation for various domain teams, including those responsible for Coupang’s rocket delivery service. The impact of this work reaches systems that handle hundreds of millions of dollars in revenue. Location Mountain View, USA Seattle, USA

About AnthropicAt Anthropic, our mission is to design AI systems that are reliable, interpretable, and steerable. We aim to ensure that AI technology is safe and advantageous for both our users and society as a whole. Our rapidly expanding team consists of dedicated researchers, engineers, policy experts, and business leaders collaborating to create beneficial AI systems.About the Role:We are in search of seasoned, product-oriented Software Engineers to take ownership of the backend systems that enhance user experiences across our API, Claude Code, and Claude.ai. In this role, you will independently define complex, multi-month projects within ambiguous problem domains and guide your peers in making technical and product-related decisions. You will align with product management, engineering teams, and research to identify capability gaps and translate cutting-edge model advancements into deployable products. Your architectural decisions will significantly impact the reliability and scalability of systems serving hundreds of thousands of global users, including internal teams, while you remain actively engaged with the code and our models.We are currently hiring for multiple teams. Team assignments will be made post-interview, considering your preferences and experience alongside organizational requirements. This flexible approach allows us to pair talented engineers with backend product initiatives where they can make the most significant impact and experience the most growth:API Core: You will develop and enhance the foundation of the Claude API—systems that deliver Claude's intelligence to developers ranging from startups to large enterprises. You will manage the performance, reliability, and efficiency of our core serving path, ensuring users derive maximum speed and value from our models. Collaboration with inference and safeguards will be key to optimizing the entire stack.API Capabilities: You will empower developers by integrating frontier model capabilities into the Claude API, overseeing core features such as vision, tool usage, and computer interaction. Your responsibilities will include launching new models and delivering the building blocks that enhance Claude's capabilities with each release, working directly with research and inference to productionize future advancements.API Knowledge: Your focus will be on transforming Claude into a true knowledge worker by ensuring the model has timely access to the right information. You will facilitate secure data access for developers, enabling Claude to automatically process and retrieve relevant data as needed.

Join Anduril Industries as a Staff Systems Engineer, where you will play a pivotal role in designing and implementing advanced systems that enhance national security. Your expertise will contribute to innovative solutions in defense technology, collaborating with a team of engineers dedicated to developing cutting-edge capabilities.

About Us At Metropolis, we are pioneers in artificial intelligence, harnessing cutting-edge computer vision technology to revolutionize the way people navigate everyday experiences. Our mission is to create seamless, checkout-free environments that empower consumers to effortlessly 'drive in and drive out' of various locations. We envision a transformative future where transactions are as quick and simple in the real world as they are online, ultimately allowing individuals to reclaim their most precious resource: time. Your Role We are on the lookout for a talented Staff Software Engineer to join our dynamic Revenue Platform team. In this pivotal role, you will take charge of the technical strategy for our billing, payments, and invoicing systems, managing a robust infrastructure that currently processes tens of millions of transactions monthly. You will play a crucial role in balancing immediate business needs with long-term architectural enhancements, identifying impactful improvements, and crafting effective migration plans to support our rapid growth. As a technical thought leader, you will collaborate closely with engineering, finance, and operations teams to address complex challenges around pricing structures, subscription billing, and enterprise invoicing. Your systems-oriented mindset will enable you to comprehend intricate workflows and develop roadmaps that enhance our platform's capabilities while it remains operational. Your contributions will directly influence how Metropolis monetizes its offerings and expands into new sectors beyond parking, ensuring our financial frameworks are resilient, compliant, and extraordinarily efficient.

Join Coupang as a Staff Backend Engineer for the Inventory and Promise Platform!At Coupang, our mission is to delight customers, and we thrive on the feedback of our users who wonder how they ever lived without us. As pioneers in the South Korean commerce sector, we are redefining the retail experience through innovative solutions. Our unique blend of startup culture, coupled with the resources of a global public company, fosters a dynamic environment where entrepreneurial spirit flourishes. We are constantly pushing the boundaries of technology to create a seamless shopping experience in a hyper-connected world.As a Staff Backend Engineer on our Inventory and Promise Platform team, you will play a crucial role in enhancing Coupang Fulfillment & Transportation operations, driving efficiency through data-driven technologies. You will lead the technical development of a cutting-edge platform that manages millions of products and ensures timely deliveries to our customers. Your expertise will be instrumental in rearchitecting our systems to provide real-time inventory visibility and reliable delivery dates, revolutionizing the customer shopping experience.

Employee Applicant Privacy NoticeAbout Us:Join us in shaping a brighter financial future. At SoFi, we are transforming the way individuals engage with personal finance.As a pioneering financial services company and national bank, we leverage innovative, mobile-centric technology to empower millions of members to achieve their financial aspirations. In a rapidly evolving industry, we stand at the forefront, dedicated to making a meaningful impact in people's lives, guided by our core values. Join us to invest in your growth, your career, and the financial landscape.The Role:We are on a mission to redefine the lending experience. SoFi is looking for passionate Staff Software Engineers who are prepared to lead the design and execution of critical features for our next-generation financial services platform, enabling our members to take control of their financial futures. Key responsibilities include:Leading design and implementation efforts across various system domains to achieve cross-team objectives.Addressing challenges in platform design and implementation amidst competing constraints and uncertainty.Recognized as a subject matter expert in platform systems, contributing to the resolution of systemic challenges.Defining architectural direction and evolutionary strategies for essential subsystems within the platform.Facilitating alignment across teams to resolve technical and organizational conflicts.Enhancing the engineering maturity of the organization by consistently upholding quality, reliability, and security standards.Aligning technology decisions with company strategy while considering risk and growth constraints.Maintaining excellence through code and design reviews, mentoring junior engineers, and improving team efficiency beyond individual contributions.Actively participating in recruitment processes.

Anduril Industries builds advanced defense technology for the U.S. and allied militaries. Its core platform, Lattice OS, unifies real-time data streams into a 3D command and control system. The company’s work centers on autonomy, artificial intelligence, computer vision, sensor fusion, and networking, with a focus on delivering new capabilities as security demands shift. Role overview The Infrastructure Engineering team is hiring a Staff Systems Engineer with a focus on mergers and acquisitions (M&A) integration. This position leads the technical process of incorporating newly acquired companies into Anduril’s infrastructure. The scope includes every stage of integration: discovery, technical evaluation, migration, and continued support after the initial transition. What you will do Design, implement, and refine procedures for integrating acquisitions into Anduril’s systems. Work directly with founders, executives, and technical staff to create architectural frameworks and strategic roadmaps for integration. Take on hands-on engineering tasks throughout the integration process as needed. Partner with stakeholders such as the M&A program team, Client Engineering, and Business Systems & Applications to define and enhance integration engineering practices. Develop repeatable, benchmarked processes and participate in post-mortem reviews to drive ongoing improvements. Spot gaps in discovery, migration, or testing tools, and either build these tools or coordinate their development with others. Work closely with Security and Client Engineering teams, drawing on strong systems, networking, and security experience. Location This role is based in Seattle, Washington, United States.

About Read AI:At Read AI, we are transforming the way teams collaborate by infusing intelligence into every conversation. Our innovative platform enhances productivity across meetings, messages, and emails, allowing work to be accomplished more efficiently and with enhanced focus. We integrate seamlessly with popular tools such as Zoom, Microsoft Teams, Google Meet, Slack, and others, ensuring teams remain aligned and can progress, regardless of their physical location.With $81 million in backing from Smash Capital, Madrona, and Goodwater Capital, Read AI is on an exciting growth trajectory. If you are passionate about shaping the future of AI-driven collaboration and want to make a significant impact at a product-centric startup, we would love to connect with you.The Role:We are looking for a Staff Software Engineer to join our Core Services team. In this pivotal technical leadership role, you will be recognized as an authority throughout the organization. You will not only manage systems but will take ownership of the technical integrity of platforms that span various departments, ensuring our infrastructure is scalable, resilient, and innovative. Your contributions will significantly influence our engineering culture and the long-term success of the business.Responsibilities:Design, develop, and maintain robust backend services and APIs, primarily utilizing Python (FastAPI), SQLAlchemy, and AWS infrastructure.Create and implement features for data ingestion, third-party integrations (e.g., Slack, HubSpot, Notion), authentication/authorization, and enterprise-level security and compliance.Oversee the complete software development lifecycle: requirements gathering, design, implementation, testing, deployment, and monitoring.Work in close collaboration with product managers, front-end engineers, and data scientists to deliver cutting-edge solutions.Foster technical excellence through code reviews, mentorship, and adherence to best practices in software engineering.Participate in on-call rotations and contribute to the operational excellence, reliability, and observability of backend systems.Continuously enhance system performance, scalability, and reliability to accommodate rapid user and data growth.Promote a culture of innovation, ownership, and customer-centricity.

Join finvari as a Senior or Staff Backend Engineer and be a pivotal part of our innovative team. In this role, you will design and implement scalable server-side solutions, contributing to the development of cutting-edge financial technology products. You will collaborate with cross-functional teams to deliver high-quality software that meets the needs of our clients.

About AnthropicAt Anthropic, we are dedicated to developing AI systems that are not only safe but also interpretable and steerable. Our mission is to ensure that AI serves the best interests of our users and society at large. Our rapidly growing team comprises passionate researchers, engineers, policy experts, and business leaders, all collaborating to create beneficial AI technologies.About the Role:We are seeking skilled software engineers to join our Platform team. This team is responsible for building the essential foundations that enhance product development across Anthropic. We manage the infrastructure and systems that teams rely on for reliable and scalable deployment to both internal users and hundreds of thousands of external clients worldwide.In this role, you will independently define and scope complex, multi-month projects, fostering cross-organizational alignment in ambiguous problem areas. Your architectural decisions will significantly influence the way Anthropic develops and scales its products. You will collaborate closely with research teams to transform cutting-edge capabilities into market-ready solutions, ensuring a lasting impact on our platforms that serve both internal and external engineering teams.Multiple teams are actively hiring, and team assignments will be determined post-interview based on your skills, interests, and the needs of the organization. This flexible approach helps us align talented engineers with backend product initiatives where they can make the most significant impact and experience growth.Your Responsibilities:Platform Acceleration: You will enhance developer productivity for product engineers at Anthropic. This includes architecting and optimizing critical development infrastructure that fuels our AI product development, encompassing development environments, observability, and CI/CD pipelines. You will work closely with product teams to understand their workflows and eliminate friction points, resulting in a profound multiplier effect across the product organization, thus accelerating our mission.Service Infrastructure: You will build and maintain the core infrastructure that supports Anthropic's engineering efforts, ranging from service mesh and observability systems to deployment pipelines and shared libraries. Your contributions will empower product teams to construct and operate reliable services at scale, positioning you as a critical force multiplier within the company.Multicloud: You will develop and sustain the infrastructure that allows Anthropic to function seamlessly across various cloud providers, focusing on cloud-agnostic solutions that enhance our operational efficiency.

Role overview Coupang seeks a Senior Staff Backend Engineer based in Mountain View or Seattle. This position leads the design and implementation of scalable backend systems that power Coupang’s ecommerce platform. Key responsibilities Shape architecture decisions for backend services supporting millions of customers Collaborate with engineers to develop and maintain reliable, high-performance systems Use modern technologies to improve service quality and customer experience Team environment Work alongside an experienced engineering team dedicated to building and enhancing the core services that drive Coupang’s global ecommerce operations.

About AnthropicAt Anthropic, we are dedicated to creating AI systems that are not only reliable and interpretable but also steerable. Our mission is to ensure that AI is both safe and beneficial for our users and society at large. Our quickly growing team comprises passionate researchers, engineers, policy experts, and business leaders who collaborate to construct beneficial AI systems.About the RoleWe are seeking talented software engineers to join our Platform organization, where we create foundational tools that enhance product development across Anthropic. You will take ownership of the infrastructure and systems that teams rely on to deliver products reliably and at scale, whether for internal stakeholders or for hundreds of thousands of external users and companies worldwide.This position is ideal for engineers who excel in tackling complex infrastructure challenges and designing systems that are reliable, scalable, and elegant. You will play a pivotal role in defining the performance quality standards for our company, supporting the next generation of LLM-first products, and transforming the developer experience into a best-in-class model.We have several teams actively hiring, and placements will be made post-interview based on your interests and experience, along with our organizational needs. This flexible approach allows us to align talented engineers with the projects where they can have the most significant impact and potential for growth.Platform Acceleration: Your work will focus on maximizing the productivity of our product engineers. You will design and optimize essential development infrastructure that drives our AI product development, including development environments, observability tools, and CI/CD pipelines. Working closely with product teams, you'll identify and eliminate friction points in their development workflows, thus significantly enhancing productivity across our entire product organization and accelerating our mission.Service Infrastructure: We maintain the core systems that underpin Anthropic's engineering efforts, from service mesh and observability systems to deployment pipelines and shared libraries. Our contributions enable product teams to build and operate reliable services at scale, making us a vital multiplier of effectiveness across the entire company.Multicloud: We create and maintain the infrastructure that allows Anthropic to operate seamlessly across multiple cloud providers, emphasizing cloud-agnostic tools, cross-cloud networking, and multi-region deployments.Authentication & Identity: We construct and uphold the critical infrastructure that supports identity management and authentication across Anthropic's platforms.

About HiveHive stands at the forefront of cloud-based AI innovation, delivering unparalleled solutions that facilitate understanding, searching, and generating content. Trusted by some of the most prominent and pioneering organizations globally, we empower developers with an extensive suite of premium, pre-trained AI models that handle billions of API requests monthly. Our turnkey software applications, driven by proprietary AI models and datasets, unlock transformative use cases across various industries. Hive's offerings are revolutionizing content moderation, brand safety, sponsorship analytics, contextual advertising, and more.Having successfully raised over $120 million from esteemed investors such as General Catalyst, 8VC, Glynn Capital, Bain & Company, and Visa Ventures, we are a growing family of over 250 dedicated professionals across our offices in San Francisco, Seattle, and Delhi. If you are passionate about shaping the future of AI, we invite you to join us!About the RoleTo fulfill our ambitious vision, we are expanding our team of exceptional engineers. We seek talented developers who are eager to launch innovative products and features into production, who thrive in autonomous environments, and who embrace the challenges that come with scaling solutions. Our ideal candidate will have a proven track record in building core services and web-based APIs from scratch, demonstrating a strong commitment to both the product’s functionality and the underlying technology. You should possess the ability to structure and write clean, maintainable code, ensuring robust software development practices.

Coupang is looking for a Staff Backend Engineer focused on Application Infrastructure to help shape the backbone of its large-scale e-commerce platform. This position is based in Mountain View or Seattle. Role overview This role centers on building and maintaining backend systems that are both scalable and reliable. The work supports the platform's growth and ensures that applications perform well under heavy demand. What you will do Design, develop, and maintain backend applications for Coupang’s e-commerce infrastructure Work closely with teams across the company to deliver solutions that meet business and technical needs Focus on system performance, reliability, and security throughout the development process Collaboration Expect to partner with engineers, product managers, and other stakeholders to deliver backend systems that serve millions of users.

Join SoFi as a Senior Software Engineer in our Data Foundations team, where you will play a pivotal role in shaping our data architecture and enhancing our data-driven capabilities. You will work closely with cross-functional teams to develop robust data solutions that empower our business decisions and improve customer experiences.As a Senior Software Engineer, you will leverage your expertise in data engineering, software development, and cloud technologies to build scalable data pipelines and maintain high-quality data infrastructure. Your contributions will directly impact our ability to deliver innovative financial solutions.

About UsAt Vercept, we are an energetic and mission-focused team with a proven history of academic excellence. Our talented researchers have made significant contributions to the field of artificial intelligence, receiving accolades such as best paper awards at leading AI conferences and achieving remarkable citation rankings. We are committed to pioneering transformative research that sets new standards in the industry and aim to revolutionize the world—one innovative breakthrough at a time.What We Seek & Why You Should Join UsWe are in search of a Backend Engineer specializing in Inference Optimization who is passionate about tackling some of the most challenging systems issues in AI. In this role, you will focus on enhancing the performance of foundation model inference, operating at the cutting edge of machine learning and high-performance systems engineering. This is an exciting opportunity to establish new standards for latency, throughput, and efficiency on a large scale.Role OverviewAs a Backend Engineer, you will take ownership of the design and optimization of inference pipelines for large-scale models. Collaborating closely with researchers and infrastructure engineers, you will identify bottlenecks and implement advanced techniques such as quantization and KV caching, ensuring the deployment of high-performance serving systems in production. Your contributions will directly influence how swiftly and cost-effectively users engage with next-generation AI.What We Expect From YouEssential Qualifications:Extensive experience in optimizing model inference pipelines, including model quantization and KV caching.Strong proficiency in backend systems and high-performance programming languages (Python, C++, or Rust).Familiarity with distributed serving, GPU acceleration, and large-scale system architectures.Proven ability to debug complex performance issues across model, runtime, and hardware layers.Adaptability to work in fast-paced environments with ambitious technical objectives.Preferred Qualifications:Practical experience with vLLM or similar inference frameworks.Background in GPU kernel optimization (CUDA, Triton, ROCm).Experience in scaling inference across multi-node or heterogeneous clusters.Prior involvement in model compilation (e.g., TensorRT, TVM, ONNX Runtime).Hands-on experience with model quantization strategies.