Senior Staff Software Engineer - Cloud Hypervisor R&D

At Crusoe, our mission is to accelerate the abundance of energy and intelligence. We are building the infrastructure that empowers individuals to use AI creatively without compromising on scale, speed, or sustainability.Join us in leading the AI revolution with innovative technology at Crusoe. As part of our team, you'll contribute to significant advancements, effect real change, and be at the forefront of responsible and transformative cloud infrastructure.About This Role:The Crusoe Cloud Software Development team is on the lookout for an enthusiastic and seasoned Senior Staff Software Engineer who specializes in Hypervisor Virtualization and Research. This key position is vital for designing, developing, and optimizing our virtualization technologies, specifically designed for an AI-centric cloud infrastructure. A profound understanding of hypervisor internals, CPU and memory virtualization, I/O virtualization, and performance optimization is crucial for creating reliable, high-performance, and secure virtualized environments that will support our pioneering AI products. This is a full-time opportunity.What You’ll Be Working On:Hypervisor Development & Optimization: Design, develop, and optimize essential hypervisor components (e.g., KVM, QEMU, or bespoke solutions) to maximize performance and efficiency for AI workloads, concentrating on CPU, memory, and I/O virtualization techniques.Virtualization Research & Innovation: Engage in comprehensive research on advanced virtualization technologies, investigating innovative methods for isolating and accelerating AI computing, storage, and networking resources. Identify and prototype new virtualization features and enhancements to elevate density, throughput, and latency.Virtual Hardware & Device Emulation: Create and refine virtual hardware components and device emulation, ensuring peak performance and compatibility for specialized AI accelerators (e.g., GPUs, DPUs) within the virtualized ecosystem.Performance Analysis & Tuning: Assess and enhance the performance of the entire virtualization stack, from the hypervisor to the virtualized guest OS, with a focus on optimization for AI/ML workloads, including profiling, bottleneck detection, and implementing low-level enhancements.System-Level Troubleshooting: Identify and resolve intricate system issues within the virtualization layer, collaborating closely with hardware and guest OS teams to debug and tackle integration challenges.

About Echo Neurotechnologies Echo Neurotechnologies is a startup based in San Francisco, focused on Brain-Computer Interface (BCI) technology. The team combines hardware engineering and artificial intelligence to build tools that help people with disabilities gain greater independence and improve their quality of life. Team and Culture The company operates as a small, close-knit group where each member’s work matters. As an early-stage team, everyone has a voice in shaping both the product and the company’s direction. Professional growth and learning are encouraged, and cross-functional collaboration is part of daily work. Role Overview: Software Engineer for R&D This role centers on supporting scientific and engineering R&D for BCI projects. The engineer will design and build data pipelines, user interfaces, and software tools that support research and real-world applications. The work directly contributes to improving technology for patients with severe disabilities. Candidates should be comfortable building systems from scratch and working with a range of programming languages and technologies. Main Responsibilities Design and manage data pipelines to handle diverse datasets for collaborative research. Develop frameworks for acquiring and processing real-time data streams from digital sensors, such as microphones and cameras. Help design and build user interfaces for BCI applications, working closely with end users. Integrate custom software with various operating system APIs and features, including accessibility options. Work within a small team to improve software and R&D workflows, merging contributed code into larger codebases. Keep design documents, code, and test results well organized and clearly documented. Required Qualifications Bachelor's or Master's degree in Computer Science, Engineering, Neuroscience, or a related field. Minimum 1 year of software engineering experience in academic or industry R&D settings. Strong programming skills in multiple languages and experience with system design.

At Lyft, we are dedicated to connecting people and creating a community where every team member feels valued and empowered to reach their full potential.As a pivotal player in transforming how our communities move, Lyft's engineering team is rapidly expanding. We are seeking passionate Software Engineers specialized in Security to join our dynamic Security team. Together, we will enhance our ability to deliver secure services at scale.Lyft is entrusted with the sensitive information of both drivers and passengers, and we take the responsibility of safeguarding that data seriously. Our Security team spearheads initiatives across the organization to protect our systems and uphold user trust.Our work encompasses designing and building a robust security architecture, collaborating with various teams during the development and launch of new products, anticipating potential challenges, and managing security incidents effectively. Our impact spans the entire organization, covering all aspects of the technology stack, including infrastructure, web applications, mobile apps, IT, and even autonomous vehicles. We adopt an engineering-focused approach to security, aiming to automate and streamline our processes while ensuring frequent updates. Explore more about our innovations on our blog at https://eng.lyft.com/tagged/security.The Cloud Security team is dedicated to enhancing Lyft's security posture by architecting a comprehensive security model tailored for our cloud infrastructure, protecting both our employees and intellectual property.As a Senior Software Engineer, you will play a crucial role in shaping this team and driving high-impact security initiatives. Your responsibilities will include leading security reviews, implementing detection measures, addressing vulnerabilities, enforcing the principle of least privilege, and establishing secure configurations for our multi-cloud and container environments.

At Benchling, we're at the forefront of a biotechnology revolution, transforming everything from medicine to agriculture with cutting-edge technology. As science progresses at an unprecedented pace, we are committed to empowering researchers and innovators with the tools they need to succeed.Our mission is clear: to harness the potential of biotechnology. Leading biotech firms rely on Benchling’s R&D Cloud to streamline product development, enhance operational efficiencies, and expedite their journey to market. Join us in reshaping the future of science through modern software solutions.ROLE OVERVIEWWe are seeking a talented Software Engineer to join our newly established Enterprise Lifecycle team. This dynamic group focuses on ensuring that our largest global clients—renowned organizations pioneering some of the most groundbreaking treatments—achieve success in highly regulated environments. Our goal is to assist these clients in validating the safety of their products and navigating complex regulatory landscapes with confidence.In this pivotal role, you will be a technical leader responsible for designing and developing critical systems that our enterprise customers depend upon for regulatory submissions and audits. Your contributions will directly impact features that are vital for FDA submissions and GxP-regulated workflows. This position sits at the intersection of platform development and product innovation, requiring deep technical acumen as well as a strong sense of product direction.We value technical excellence, a profound understanding of user requirements, and a dedication to crafting solutions that simplify complex scientific processes. If you’re passionate about solving challenging technical issues that can significantly influence global health and innovation, we invite you to apply.

Join Sofi as a Senior Software Engineer specializing in Cloud Efficiency, where you will play a crucial role in enhancing the performance and scalability of our cloud-based applications. You will collaborate with cross-functional teams to design and implement innovative solutions that drive operational excellence and customer satisfaction.Your expertise in cloud technologies and software development will be instrumental in optimizing our infrastructure, ensuring reliability, and supporting the growth of our dynamic platform.

At Crusoe, our mission is to catalyze the proliferation of energy and intelligence. We are engineering the driving force behind a future where individuals can ambitiously create with AI without compromising on scale, speed, or sustainability.Join us at Crusoe as we lead the charge in the AI revolution through sustainable technology. You will play a pivotal role in fostering meaningful innovation, making a significant impact, and collaborating with a team that is pioneering the development of responsible and transformative cloud infrastructure.Position Overview:We are in search of experienced Staff/Senior Staff Software Engineers who will be tasked with the architecture, design, and development of advanced Cloud Infrastructure management systems and platforms. You will be vital in delivering end-to-end use cases and workflows for our integrated AI-First Crusoe Cloud. Your contributions will be essential in constructing systems and platforms that effectively plan, monitor, deploy, and operate Crusoe Cloud, achieving key business revenue metrics.Your expertise will be crucial in evaluating, implementing, and building platforms, tools, and frameworks that prioritize reliability, scalability, operational efficiency, and user-friendliness. You will enhance our infrastructure planning and management workflows, driving efficiency and improving the overall performance and reliability of our cloud platform as we ambitiously scale our Crusoe Cloud products and services by more than 10X.In this role, you will also develop and refine technical designs and architectures, mentor fellow engineers, and actively contribute to the growth of the team in partnership with engineering managers.Your Key Responsibilities:Engage collaboratively across teams to design, architect, and implement physical infrastructure management software systems and availability platforms that meet end-to-end customer use cases, ensuring an exceptional customer experience.Champion the reliability, scalability, and security of our systems and platforms, acting as the guardian of our infrastructure!Create workflows designed to enhance efficiency and achieve key business objectives and metrics.Design and implement high-performance, highly available cloud architectures, optimizing for both performance and cost-effectiveness.Enhance cloud deployment, configuration management, and operations by developing and maintaining effective platforms, interfaces, and automation tools.Actively participate in the evolution of our platform, working closely with cross-functional teams.

Join our innovative team at fal as a Staff Software Engineer specializing in large-scale computation platforms. We are seeking a seasoned software engineer with extensive experience in developing backend systems that efficiently orchestrate workloads and manage resource constraints. Your expertise in foundational cloud infrastructure and Linux provisioning will be crucial as you work towards achieving high reliability and scalability with minimal operational overhead.

At Crusoe, we are dedicated to accelerating the abundance of energy and intelligence. As a pioneering AI infrastructure company, we control every aspect of our operations — from energy generation to the digital tokens that power the world’s most ambitious AI workloads. Joining Crusoe means being part of a team that is shaping the future at an unprecedented pace.We are amid a transformative industrial revolution. The endless demand for AI computing power poses significant challenges, particularly concerning energy supply. Our energy-first strategy not only enhances AI infrastructure but also contributes positively to the environment, empowering innovators in the AI sector.We seek proactive, problem-solving team members who recognize the scale of our mission and are eager to navigate uncharted territories. If you aspire to advance your career alongside experts in energy, manufacturing, data center construction, and cloud services, we invite you to become part of our dynamic team.If you are ready to engage in the most impactful work of your career, assist our customers and partners in elevating their AI strategies, and contribute to a high-performing, supportive team, we welcome you to build the future with us at Crusoe.About This RoleThe Cloud Storage team at Crusoe is searching for a Senior Staff Software Engineer to act as the principal architect for our storage strategy. Unlike a Staff Engineer who leads feature development, a Senior Staff Engineer will define the long-term technical roadmap essential for our AI-scale infrastructure. You will play a crucial role in establishing the architectural strategy, ensuring the integrity and global scalability of our specialized storage services. Your work will focus on the underlying physics of the stack, bridging high-performance NVMe hardware with globally distributed object storage solutions that compete with S3.Your ResponsibilitiesArchitectural Vision & Strategy: Lead the development and execution of the long-term technical strategy for Crusoe's storage engine, while identifying and integrating industry trends such as CXL and NVMe-oF into a unified roadmap.System Programming Expertise: Utilize your extensive experience in system programming with languages such as C, C++, Go, and Rust to lay the groundwork for our V2 storage re-architecture.Storage Protocols: Design and implement solutions employing industry-standard storage protocols, including NFS, SMB, iSCSI, and NVMe/TCP.

About AnthropicAt Anthropic, our mission is to develop AI systems that are safe, interpretable, and controllable. We believe in harnessing AI for the greater good of our users and society at large. Our dynamic team comprises dedicated researchers, engineers, policy experts, and business leaders who collaborate to create beneficial AI systems.About the RoleThe Cloud Inference team is responsible for scaling and optimizing Claude to cater to a vast array of developers and enterprise clients across platforms such as AWS, GCP, Azure, and future cloud service providers (CSPs). We manage the complete lifecycle of Claude on each cloud platform—from API integration and intelligent request routing to inference execution, capacity management, and daily operations.Our engineers wield significant influence, driving multiple key revenue streams while optimizing one of Anthropic's most valuable resources—compute power. As we expand to additional cloud providers, the intricacies of efficiently managing inference across diverse platforms with varying hardware, networking frameworks, and operational models grow substantially. We seek engineers adept at navigating these variances, developing strong abstractions that are effective across providers, and making informed infrastructure choices that keep us cost-effective at scale.Your contributions will enhance the operational scale of our services, expedite our capacity to launch cutting-edge models and innovative features to clients across all platforms, and ensure our large language models (LLMs) adhere to stringent safety, performance, and security standards.

Checkr, Inc. is looking for a Senior Staff Software Engineer in San Francisco, California. This position centers on designing and building software that supports the company's mission to transform the background check industry. Role overview This role involves tackling complex engineering challenges and developing solutions that have a direct impact on Checkr's products. Projects will focus on creating and improving software applications that serve a wide range of users and use cases. Collaboration Senior Staff Software Engineers at Checkr work closely with colleagues from different departments. Expect to partner with cross-functional teams to ensure software meets technical and business needs. What you will do Build and maintain software applications that support Checkr's core services Address challenging problems with thoughtful, scalable solutions Work collaboratively with teams across engineering, product, and other functions

Senior Software Engineer – Cloud Communications Platform Location: South San Francisco, California, USA About Zipline Are you passionate about making a difference in the world? At Zipline, we are dedicated to revolutionizing the movement of goods globally. Our mission is to tackle the world’s most pressing access challenges by developing the first instant delivery and logistics system that serves all individuals, irrespective of their location. From facilitating Rwanda’s national blood delivery network and distributing COVID-19 vaccines in Ghana to offering on-demand home delivery for major retailers and enabling healthcare providers to deliver care directly to homes in the U.S., we are reshaping logistics for businesses, governments, and consumers alike. While our technology is sophisticated, the concept is straightforward: a teleportation service that delivers what you need, when you need it. By utilizing robotics and autonomy, we are committed to decarbonizing delivery, alleviating road congestion, minimizing fossil fuel usage, and enhancing the resilience of the global supply chain. Join Zipline and contribute to creating an equitable and resilient logistics system that impacts billions of lives. About You and The Role Zipline operates a large-scale autonomous system that relies on dependable, low-latency communication between vehicles, ground infrastructure, and cloud services. Our Cloud Communications team is responsible for the platform that transfers critical data from embedded systems to the cloud, ensuring data reliability, scalability, and observability. We seek a Senior Software Engineer to enhance and fortify this platform. This role centers on connecting hardware assets to the cloud, hosting and orchestrating new data use cases, and constructing distributed observability across embedded software, cellular networks, and cloud microservices. In this position, you will collaborate closely with the Embedded and Autonomy teams that develop software to extract data from devices. Your primary responsibility will be to guarantee that data is securely ingested into the cloud, deduplicated, stored, processed, monitored, and accessible for both real-time and offline workflows. This is a high-ownership role directly influencing flight reliability, operational visibility, and the scalability of our global network. What You’ll Do Lead the evolution of services connecting vehicles, charging and loading stations, fulfillment hardware, and other field-deployed infrastructure to the cloud. Design and maintain asset-to-cloud APIs, message schemas, and communication clients in collaboration with embedded teams. Develop and manage ingestion pipelines for new data use cases.

Benchling is building AI-powered tools to accelerate biotech research and development. The team’s work supports scientists worldwide, helping move discoveries from the lab to real-world applications in healthcare and agriculture. By combining structured scientific data with artificial intelligence, Benchling aims to make research more efficient and accessible. Over 200,000 scientists use Benchling’s platform, including teams at leading biopharma companies and academic institutions. The company’s mission centers on developing an "AI scientist" to enhance productivity across the biotech industry. This vision starts with building AI expertise within the team itself. Role overview This Software Engineer position sits on the AI Agents team. The focus is on building end-to-end AI solutions that automate complex, time-consuming scientific tasks. These AI agents support scientists with experiment design, data analysis, and report generation. What you will do Design and implement AI agents that streamline scientific workflows Automate tasks such as experiment planning, analyzing results, and preparing scientific reports Iterate on solutions based on direct user feedback, ensuring tools meet real-world needs Impact Your work will help scientists operate more efficiently and focus on discovery. The solutions you build will be used by researchers at the forefront of biotech innovation.

Waymo is at the forefront of autonomous driving technology, dedicated to becoming the most trusted driver globally. Originating from the Google Self-Driving Car Project in 2009, our primary goal has been to develop the Waymo Driver—The World’s Most Experienced Driver™. Our innovations aim to enhance mobility access while saving countless lives lost to traffic accidents. The Waymo Driver powers our fully autonomous ride-hail services and is adaptable across various vehicle platforms and product applications. Having completed over ten million rider-only trips, our technology has autonomously navigated over 100 million miles on public roads and executed tens of billions of miles in simulations across more than 15 U.S. states.Your Role:Lead the technical strategy for the Simulator’s issue response lifecycle, encompassing automated detection, root cause analysis, and the deployment of both temporary and permanent software solutions to prevent future regressions.Direct complex, cross-functional projects to enhance automated issue detection by integrating new data sources and signals, thus reducing the time from an in-field event to mitigation deployment.Work closely with Data Science, Systems Engineering, and operations teams to improve technical processes and tools, accelerating the deployment and validation of solutions for identified issues.Mentor mid-level and junior engineers on sophisticated technical challenges, best practices in system architecture, and high-quality software development, serving as a technical force multiplier.

Join Crusoe Energy Systems as a Senior Staff Engineer in Cloud Site Operations and take your career to new heights. In this pivotal role, you will spearhead the design, implementation, and maintenance of our cloud infrastructure, ensuring the reliability and scalability of our operations. You will collaborate with cross-functional teams to optimize processes and implement innovative solutions.

Join Crusoe as a Staff Software Engineer focusing on innovative storage solutions. In this role, you will leverage your expertise to design, develop, and optimize systems that enhance our storage capabilities. You will work alongside a talented team, pushing the boundaries of technology in a collaborative environment.

Join Discord, a platform cherished by over 200 million users monthly, where gaming is at the heart of our community. With more than 90% of our users engaging in games, they collectively spend 1.5 billion hours enjoying thousands of unique titles on Discord every month. Our commitment is to enhance the gaming experience by facilitating enjoyable interactions before, during, and after gameplay.At Discord, we empower individuals to connect within diverse communities, and our users trust us to safeguard their conversations. Our Platform Security Engineering team is dedicated to fortifying the systems that underpin Discord, ensuring that the "secure way" becomes the "easy way." We are seeking a Staff Software Engineer to drive this mission forward through your security expertise, software development skills, and operational excellence. In this technical leadership role, you will identify and pursue impactful opportunities to mitigate security risks across our Engineering teams. You will design and implement user-friendly "paved paths" for managing identities, deploying code, configuring cloud infrastructure, and operating services effectively.If you are a security engineer with a profound curiosity, keen on tackling technically and socially complex projects, and motivated to enhance security and privacy at Discord, we encourage you to explore this opportunity further!

Join our innovative engineering team at Twitter Inc. as a Senior Staff Software Engineer. We are looking for talented individuals who are eager to tackle complex challenges and contribute to the development of cutting-edge technology. In this role, you will lead projects, mentor junior engineers, and collaborate with cross-functional teams to enhance our platform.

At NerdWallet, we strive to illuminate every financial decision in life, and this mission thrives on our extraordinary team of Nerds. We are committed to nurturing an inclusive, flexible, and transparent culture that empowers you to grow, take calculated risks, and express your authentic self (cape optional). Whether you prefer to work remotely or from our office, we support your best working environment. Your well-being, professional development, and impact are our priorities because when one Nerd excels, we all benefit.As a Senior Staff Software Engineer, you will be pivotal in architecting, developing, and upkeeping intricate software systems while providing invaluable technical leadership to your team. Your main focus will be to design scalable and efficient solutions that fulfill both functional and non-functional requirements such as performance, security, and maintainability.You will write high-quality, scalable, and efficient code, ensuring our software aligns with business and technical specifications. Your role also encompasses reviewing and refining existing code, conducting comprehensive testing, and troubleshooting complex challenges to enhance system performance and reliability. Additionally, you will mentor junior developers, cultivating a continuous learning environment and promoting best practices in coding, architecture, and software development methodologies. Collaboration with cross-functional teams, including product managers, designers, and quality assurance professionals, will be essential to ensure that our technical solutions align with business goals. Strong communication, problem-solving skills, and the ability to work autonomously while leading projects are crucial for your success in this role.This position reports to the Senior Manager of Engineering.Projects you may be involved in include:Enhancing and developing new insurance flows through our marketing funnels utilizing A/B testing, micro-optimizations, and ordering changes for auto, home, life, Medicare, and travel insurance.Designing and implementing secure, scalable backend integrations with partner and third-party platforms to boost conversions and user engagement.Leading the development of high-impact insurance user experiences, including organic SEO pages that drive significant traffic and user flows across various insurance products (auto, home, life, Medicare, U65 health, travel, and pet).Instrumenting our systems within our Observability platform, Datadog.

Sofi is hiring a Software Engineer, Cloud to help build and support cloud-based solutions for a diverse and expanding customer base. This position plays a key part in shaping the technology that powers Sofi’s financial products. Role overview This role centers on designing, developing, and maintaining systems in the cloud. The Software Engineer will work closely with colleagues from different teams to introduce new technologies and refine existing systems. What you will do Create and maintain cloud-based applications and services. Work with cross-functional teams to implement new features and improve performance. Contribute to projects that enhance the overall user experience. Impact Work in this role supports Sofi’s mission to make financial tools accessible to everyone. Contributions directly affect how customers interact with and benefit from Sofi’s offerings.

About the Senior Staff Software Engineer Role Crusoe Technologies is hiring a Senior Staff Software Engineer for the CAPE project in San Francisco, CA. This role focuses on building and maintaining scalable software that strengthens our infrastructure and streamlines operations. What You Will Do Design and develop software solutions for the CAPE project Maintain and improve existing systems to support infrastructure growth Work closely with teams across disciplines to deliver reliable, efficient software What We Look For Advanced programming skills Deep understanding of software architecture Experience collaborating with cross-functional groups