Senior Systems Performance Engineer

Join Crusoe as a Senior Systems Performance Engineer, where you will play a crucial role in optimizing and enhancing our systems for superior performance. You will be responsible for diagnosing performance bottlenecks, implementing solutions, and ensuring that our infrastructure can scale efficiently. Work in a dynamic environment that encourages innovation and professional growth.

Join fal in our pursuit to maintain a leading edge in model performance for generative media models. You'll be instrumental in designing and implementing innovative solutions for model serving architecture, built on our proprietary inference engine. Your focus will be on maximizing throughput while minimizing latency and resource consumption. In addition, you will create performance monitoring and profiling tools to identify bottlenecks and optimization opportunities. Collaborate closely with our Applied ML team and clients in the media sector to ensure their workloads leverage our accelerator effectively.

About UsAt Lemurian Labs, we are dedicated to democratizing AI technology while prioritizing sustainability. Our mission is to create solutions that minimize environmental impact, ensuring that artificial intelligence serves humanity positively. We are committed to responsible innovation and the sustainable growth of AI.We are in the process of developing a state-of-the-art, portable compiler that empowers developers to 'build once, deploy anywhere.' This technology ensures seamless cross-platform integration, allowing for model training in the cloud and deployment at the edge, all while maximizing resource efficiency and scalability.If you are passionate about scaling AI sustainably and are eager to make AI development more powerful and accessible, we invite you to join our team at Lemurian Labs. Together, we can build a future that is innovative and responsible.The RoleWe are seeking a Senior ML Performance Engineer to take charge of designing and leading our Performance Testing Platform from inception. In this pivotal role, you will be recognized as the technical expert in measuring, validating, and enhancing the performance of large language models (including Llama 3.2 70B, DeepSeek, and others) prior to and following compiler optimization on cutting-edge GPU architectures.This is a critical position that will significantly impact our product quality and customer success. You will work at the intersection of Machine Learning systems, GPU architecture, and performance engineering, constructing the infrastructure that substantiates the value of our compiler.

At ClickUp, we're not just developing software; we're shaping the future of work! In an era dominated by work sprawl, we identified a more efficient way. This led us to create the first truly integrated AI workspace, consolidating tasks, documents, chat, calendar, and enterprise search, all enhanced by context-driven AI. Our mission is to empower millions of teams to escape silos, reclaim their time, and reach unprecedented levels of productivity. At ClickUp, you'll have the chance to learn, innovate, and leverage AI in transformative ways that will not only influence our product but also the broader landscape of work itself. Join a daring, pioneering team that's challenging the limits of what's possible! We are on the lookout for a technical leader in SaaS client performance who is passionate about enhancing the customer experience through top-tier performance solutions. As a Senior Performance Engineer, you will spearhead comprehensive strategies to optimize application speed, memory utilization, and reliability across our entire platform. You will be empowered to analyze, diagnose, and address performance bottlenecks wherever they arise—be it front-end, back-end, or infrastructure—ensuring ClickUp remains the fastest and most reliable productivity platform available.The ideal candidate is a hands-on authority in browser and NodeJS performance, with a thorough understanding of how code influences rendering, memory management, and overall user experience. You excel in solving intricate challenges, collaborating across teams, and establishing new benchmarks for performance excellence. If you're driven to make a significant impact for millions of users, this is your chance to lead at scale.Your Responsibilities:Conduct root cause analysis on client performance issues and perform post-mortems.Profile application code to identify inefficient algorithms, memory leaks, and other issues; propose and implement effective solutions.Establish performance monitoring, alerting, and dashboards to proactively detect and resolve client performance challenges.Examine client traffic patterns, load testing outcomes, and other metrics to set benchmarks and drive enhancements.Champion performance best practices and set performance standards across the engineering organization.Identify infrastructure upgrades (caching, CDNs, database optimization) to elevate the client experience.Collaborate with development teams to incorporate performance as a core requirement in the development of new features.

P-97 At Databricks, we are dedicated to empowering data teams to tackle some of the most challenging problems in the world. We achieve this by creating and managing a leading data and AI infrastructure platform that enables our clients to leverage deep data insights for business enhancement. Our commitment to pushing the limits of data and AI technology is matched by our focus on resilience, security, and scalability, which are essential for our customers' success on our platform. Databricks operates one of the largest-scale software platforms, comprising millions of virtual machines that generate terabytes of logs and process exabytes of data daily. Given our scale, we frequently encounter cloud hardware, network, and operating system faults, and our software must adeptly protect our customers from these issues. As a Senior Performance Engineer, you will collaborate with various teams throughout the organization to assess product and feature performance, pinpoint performance bottlenecks, and partner with engineers to address performance and scalability challenges. This includes setting performance goals for different software releases, guiding teams in developing performance benchmarks, conducting competitive benchmark analyses for various Databricks products, and performing in-depth analyses to identify and resolve performance issues.

Join our talented team at Canva as a Senior Software Engineer specializing in Video Performance. We are looking for an innovative and solutions-oriented engineer who is passionate about optimizing video experiences for our users. In this role, you will collaborate with cross-functional teams to enhance performance, develop new features, and implement best practices in video engineering.

CoreWeave is The Essential Cloud for AI™. Designed by innovators for innovators, CoreWeave provides a robust platform of advanced technology and exceptional teams, empowering organizations to confidently build and scale AI solutions. As a trusted partner for leading AI labs, startups, and global enterprises, CoreWeave integrates unmatched infrastructure performance with extensive technical expertise, driving innovation and transforming compute capabilities into actionable results. Since its inception in 2017, CoreWeave has rapidly advanced, becoming a publicly traded company (Nasdaq: CRWV) in March 2025. Explore more at www.coreweave.com.What You’ll Do:Description of the TeamThe IT Business Systems (GTM) team at CoreWeave is responsible for the application stack that facilitates the entire customer journey—from lead generation to quoting and cash collection. This team designs and manages systems that underpin a rapidly growing AI cloud business, collaborating closely with Revenue Operations, Marketing Operations, Finance, Billing, and Customer Experience to deliver scalable, compliant, and automated workflows.About the role:As a Senior Salesforce Engineer, you will take on a pivotal role as a hands-on technical leader, tasked with designing, building, and operating Salesforce solutions across Sales Cloud, Revenue Cloud/CPQ, and GTM integrations. You will tackle high-impact projects including post-acquisition system integrations, the implementation of a new usage-based billing platform, and enhancements within quoting, forecasting, and revenue operations. This role demands deep expertise in CPQ workflows while also overseeing broader platform architecture and integrations with finance and GTM systems. You will work cross-functionally with GTM, Finance, and IT leadership to create scalable, dependable solutions that position CoreWeave for continued success.

About Unto LabsAt Unto Labs, we are a dedicated team of low-level engineers pushing the boundaries of distributed systems to harness the full potential of modern hardware. Our mission is to revolutionize blockchain technology, innovating from fundamental consensus mechanisms to finely-tuned networking stacks, serving applications that scale globally.About the RoleWe are on the lookout for a talented Systems Engineer to tackle the most complex challenges in distributed, high-performance computing. In this role, you will design and develop critical components of a base-layer blockchain, aiming to extract maximum performance from standard hardware. As part of our dynamic team, you will engage with the entire modern blockchain stack, including cryptography, consensus, distributed systems, and core kernels.Key ResponsibilitiesDesign robust systems ensuring effective process isolation.Develop and test high-performance subsystems from the ground up in C, with a focus on cryptography, consensus algorithms, and networking.Implement sophisticated error correction and data recovery solutions.Contribute to and enhance a suite of custom benchmarking and performance testing tools.QualificationsExtensive knowledge of systems programming languages (C, C++, Rust) with an emphasis on performance optimization.Strong understanding of contemporary CPU architectures, memory hierarchies, and low-level optimization strategies.Expertise in high-performance networking and protocol design.Familiarity with distributed systems and consensus algorithms.Why Join Us?Be at the cutting edge of blockchain technology, working on next-generation performance enhancements within a small, agile, and collaborative team.Collaborate with seasoned experts in high-frequency trading and the development of scalable ecosystems.Contribute to the architecture of a system capable of processing millions of transactions per second.Gain access to state-of-the-art hardware and development tools.Compensation and BenefitsCompetitive salary ranging from $180,000 to $250,000+ USD.Significant equity and potential for growth.A flexible working environment.

Senior Infrastructure & Performance EngineerAs a Senior Infrastructure & Performance Engineer, you will take charge of enhancing the performance, reliability, and scalability of Nash's foundational infrastructure. Collaborating closely with the Engineering Leadership and both platform and product engineering teams, you will design and manage low-latency, mission-critical systems that facilitate real-time logistics for some of the world's largest retailers.This is a key senior role focused on elastic capacity, high availability, cloud-native architectures, Postgres performance, and enterprise-grade CI/CD for multi-region deployments. You will define the technical roadmap, establish best practices, and implement systems that support the essential workflows of major retailers.Key ResponsibilitiesOversee infrastructure performance and reliability for Nash's production environments, ensuring low latency, high throughput, and consistent performance under load.Design, develop, and enhance AWS infrastructure, utilizing managed services with a focus on ECS/Fargate.Lead initiatives in Postgres performance engineering, including query optimization, indexing strategies, connection management, replication, cluster design, and failover.Architect and maintain multi-region, highly available systems with robust resiliency and guaranteed disaster recovery.Design and refine enterprise-grade CI/CD pipelines that enable safe, repeatable, and rapid deployments across environments and regions.Establish observability standards (metrics, logs, tracing, SLOs) to proactively identify and resolve performance bottlenecks.Collaborate with application engineers to inform system design choices that influence scalability, latency, and reliability.Lead incident response efforts and postmortems, emphasizing root cause analysis, systemic improvements, and long-term resilience.Set best practices for infrastructure and performance while mentoring engineers throughout the organization.Qualifications6+ years of experience in building and managing high-scale production infrastructure for mission-critical systems.Proficiency with AWS, particularly with ECS/Fargate, and experience with cloud-native architecture.Strong background in Postgres performance tuning and optimization.Deep understanding of CI/CD practices and experience in multi-region deployments.Exceptional analytical and problem-solving skills, with a proactive approach to performance management.

Join the dynamic team at the City and County of San Francisco as a Senior Information Systems Engineer specializing in Systems. In this pivotal role, you will leverage your expertise to enhance our technological infrastructure across multiple city departments, driving efficiency and innovation.Your responsibilities will include designing, implementing, and maintaining complex information systems while ensuring optimal performance and security. You will collaborate with diverse teams to identify system requirements and develop solutions that meet the needs of our community.

Role overview The Performance Modeling Engineer II position at OpenAI centers on building and applying performance models to enhance the efficiency of advanced AI systems. Based in San Francisco, this role contributes to the reliability and speed of OpenAI’s technologies. What you will do Develop and implement performance models for AI systems Collaborate with data scientists and engineers to refine performance metrics Support the efficiency and rigorous standards of OpenAI’s technologies

Who We AreSamsara (NYSE: IOT) is at the forefront of the Connected Operations™ Cloud, providing a robust platform that empowers organizations reliant on physical operations to leverage Internet of Things (IoT) data for actionable insights and enhanced operational performance. We are committed to enhancing the safety, efficiency, and sustainability of the physical operations that underpin our global economy, representing over 40% of global GDP across vital industries such as agriculture, construction, field services, transportation, and manufacturing. Join us in our mission to digitally transform these sectors at scale.At Samsara, you will play a pivotal role in shaping the future of physical operations, contributing to an exciting range of product solutions, including Video-Based Safety, Vehicle Telematics, Apps and Driver Workflows, and Equipment Monitoring. As a publicly traded company, we offer you the autonomy and support to make a lasting impact as we build for the future.About the Role:As a Senior Systems EPM at Samsara, you will lead hardware engineering projects from initial product concept through to mass production. Collaborating closely with Electrical Engineering, Product Development, Firmware, and Field Services teams, as well as product managers and supply chain professionals, you will develop and deliver high-quality products. This role involves driving the product development process across cross-functional teams to ensure timely achievement of product goals. We seek someone passionate about product quality, who demonstrates strong process ownership and innovation, and who is eager to enjoy the journey of bringing physical operations into the cloud.This is a hybrid position open to candidates residing in the US, who are willing to work in our San Francisco, CA office three days a week.You Should Apply If:You desire to make a difference in the industries that sustain our world: Your contributions will have a tangible impact—ensuring operational continuity, facilitating food supply, reducing emissions, and, most importantly, guaranteeing worker safety.You are the architect of your own career: If you demonstrate commitment, this role will be just the beginning of your journey with Samsara. We are dedicated to fostering employee success and have cultivated a culture that promotes rapid career advancement, with numerous opportunities for experiential learning.

Who We AreSamsara (NYSE: IOT) is at the forefront of the Connected Operations™ Cloud, a transformative platform that empowers businesses reliant on physical operations to tap into Internet of Things (IoT) data. Our aim is to provide actionable insights that enhance safety, efficiency, and sustainability across vital industries such as agriculture, construction, transportation, and manufacturing. By digitally transforming these sectors, which represent over 40% of global GDP, we are contributing to a more efficient and sustainable economy.Joining Samsara means being part of a team that is defining the future of physical operations. You will engage in cutting-edge solutions, including Video-Based Safety, Vehicle Telematics, and Equipment Monitoring, within a supportive environment that fosters innovation and long-term impact.About the Role:We are seeking a Senior Hardware Systems Engineer to enhance our rapidly expanding product line. Your primary responsibility will involve leading the electrical engineering components of product architecture and design, grounded in comprehensive feasibility, design, and cost analyses. This encompasses critical aspects such as component selection, thermal management, and antenna design. You will leverage extensive telemetry and direct customer insights to inform and refine our product designs. Collaborating closely with Product Management, Firmware, and Hardware leadership, you will influence key engineering decisions while mentoring fellow engineers. The role will also require interaction with our US and Taiwan EE teams, as well as our Supply Chain and laboratory resources, to achieve our project goals effectively.This role is hybrid, requiring you to be in our San Francisco, CA office three days a week, with the flexibility to work remotely for two days. Travel may be necessary up to 25% of the time, and proximity to an international airport is essential. We offer relocation assistance for this position and welcome candidates from across the U.S. who are willing to relocate to the Bay Area.

C1 stands at the forefront of cybersecurity, offering the first AI-native identity security platform designed to safeguard all identities—human, non-human, and AI. Our innovative solution leverages powerful automation, platform-level AI, and seamless connectors to centralize access visibility, enforce granular controls, enable just-in-time access, and automate user access reviews across a plethora of applications. Trusted by leading enterprises such as DigitalOcean, Instacart, Ramp, and Zscaler, our platform is user-friendly, quick to deploy, and highly effective.The RoleWe are in search of a Senior IT Systems Engineer who is passionate about resolving complex challenges and possesses an unquenchable curiosity for AI technologies. This individual will be pivotal in maintaining and enhancing our internal technology stack, which encompasses endpoint management, SaaS administration, and infrastructure automation. As the primary technology resource at C1, you will manage everything from strategic platform choices to hands-on troubleshooting, ensuring our fast-paced organization continues to thrive.This is not your conventional IT role. You will be encouraged to explore the limits of AI-driven tools, automation, and contemporary IT practices. If you are someone who eagerly prototypes new AI workflow tools by Monday after reading about them over the weekend, you will find your place here.Your Responsibilities• Own the IT stack end-to-end: Oversee and enhance our SaaS ecosystem (including Google Workspace, Okta, Slack, Zoom, Jira/Linear, GitHub, etc.), endpoint fleet (macOS-focused), and networking/security infrastructure.• Be the fixer: Diagnose and resolve a wide range of workplace technology issues—from access challenges and hardware malfunctions to intricate integration problems. No challenge is too small or too complex.• Automate relentlessly: Develop scripts, workflows, and integrations to eliminate manual tasks. Utilize AI tools and LLMs to optimize IT operations, ticket management, onboarding/offboarding, and daily support.• Drive AI adoption internally: Assess, pilot, and deploy AI-driven tools to enhance productivity across the organization. Advocate for responsible AI implementation and contribute to shaping our internal AI policies and best practices.• Manage identity and access: Administer identity providers, SSO, MFA, and access governance—utilizing C1’s own platform to manage access throughout our environment.• Scale for growth: Design and implement IT processes, policies, and infrastructure that grow alongside the company as we expand from approximately 100 employees and beyond.

About Lumafield: Established in 2019, Lumafield has pioneered the development of the world's first accessible X-Ray CT scanner specifically designed for engineers. Our intuitive scanner, combined with cloud-based software, empowers engineers to gain unparalleled insights into their projects at a remarkably affordable cost. Engineers face high-stakes decisions daily, necessitating tools that provide maximum visibility into their designs. By delivering exceptional product clarity and AI-enhanced tools that identify issues and produce quantitative insights, Lumafield is set to transform the creation, manufacturing, and application of complex products across various sectors. Our company thrives on impact and is dedicated to delivering the utmost value to our customers, ensuring their needs drive our development. Our talented team consists of leading researchers, industrial designers, PhD holders, innovators, and startup founders, all working collaboratively without egos. We proudly receive backing from prestigious venture capital firms, including Kleiner Perkins, Lux Capital, DCVC, and Spark Capital.Headquartered in Cambridge, MA, with an additional office in San Francisco, CA, we are excited to grow our team.About the Role: As a Senior Systems Software Engineer at Lumafield, you will be instrumental in developing the software that drives our cutting-edge, in-line manufacturing CT scanning products. You will engage with state-of-the-art X-ray physics, high-speed detectors, image processing, and embedded systems. Collaborating within a small team focused on our latest hardware, you will harness your expertise to maximize system performance and achieve outstanding results for our clients. This position is perfect for those eager to take ownership of embedded systems, firmware, and software design in an early-stage product environment. This role is based in our San Francisco, CA office, with occasional travel required to our Cambridge, MA office.

Welcome to Planet. We harness the power of space to benefit life on Earth.At Planet, we design, build, and operate the largest constellation of imaging satellites ever created. Our unique constellation provides an unmatched dataset of empirical information through an innovative cloud-based platform, serving key stakeholders in commercial, environmental, and humanitarian fields. We are a pioneering fusion of a space and data company.Our global clientele leverages Planet's data to innovate technologies, boost revenue, enhance research, and tackle some of the world's most pressing challenges.As we manage every aspect of hardware design, manufacturing, data processing, and software engineering, our office is a vibrant hub of specialists from diverse backgrounds.We prioritize a people-centric culture and community, continually adapting to place our team members first, preparing our company for future growth. Join Planet and become part of our mission to transform global perspectives.Planet operates globally, with a remote workforce and offices located in San Francisco, Washington D.C., Germany, Austria, Slovenia, and the Netherlands.About the Role:We are looking for a Senior Spacecraft Systems Engineer to spearhead the development, verification, and testing of Planet’s cutting-edge satellite platforms that span various domains, including earth observation and in-space computing. As the technical lead for spacecraft, you will lead an agile engineering team through all phases including requirements formulation, design, verification and validation (V&V), as well as integration, assembly, and testing (AI&T) for new satellite systems. You will collaborate closely with our Product team to ensure our satellites fulfill customer requirements, with our Manufacturing leads to facilitate the transition to mass production, and with our Mission Operations leads to ensure optimal on-orbit performance of our future fleets.This is a full-time, hybrid position requiring at least 3 days a week in our San Francisco headquarters.

Join Cloudflare as a Senior Software Engineer specializing in Network Performance & Reliability! In this role, you'll be at the forefront of enhancing the performance and stability of our global network, ensuring our customers benefit from unparalleled speed and reliability. You'll collaborate with experts across various teams to design and implement innovative solutions that optimize network operations.

Join Cloudflare as a Senior Systems Engineer specializing in Workers AI, where you will play a pivotal role in shaping the future of serverless computing. You will collaborate with cross-functional teams to design, implement, and optimize systems that empower developers worldwide.In this dynamic position, your expertise will be critical in enhancing the performance and reliability of our services. We are looking for an innovative thinker with a passion for technology and a strong background in systems engineering.

Role OverviewJoin Archil as a Senior Distributed Systems Engineer, where you will play a critical role in developing our innovative storage solutions. You'll engage with technologies across the entire stack to tackle challenges and contribute to building Archil volumes, significantly influencing both technical design and product strategy.Key ResponsibilitiesProvide on-call support for our production systems, ensuring customer satisfaction in case of issues.Innovate and implement unprecedented capabilities within our storage services.Design interactions in distributed systems focusing on atomicity and idempotency.Deploy and generalize infrastructure across multiple cloud environments.Adapt to evolving customer needs amidst ambiguity.Lead engineering teams through complex decisions and provide insightful PR feedback.

Join CoreWeave: The Essential Cloud for AI™At CoreWeave, we empower innovators to build and scale AI confidently. Our platform, crafted by pioneers for pioneers, is trusted by top AI labs, startups, and global enterprises. With superior infrastructure performance and deep technical expertise, we accelerate breakthroughs and transform compute into capability. Since our inception in 2017, we've grown to become a publicly traded company (Nasdaq: CRWV) by March 2025. Discover more at www.coreweave.com.Role Overview:As a Senior Marketing Performance Analyst, you will be pivotal in architecting our measurement strategy. Your role transcends mere reporting; you will uncover insights that define the 'why' and 'what's next' for our marketing initiatives. Collaborating with Growth, Events, and Operations teams, you will develop and enhance a cohesive metrics framework tracking the buyer's journey from the initial digital interaction to closed-won deals. Your mission is to ensure that every dollar spent on events and digital tactics is quantifiable and optimized in alignment with our long-term revenue objectives.Key Responsibilities:Metrics Framework & Taxonomy: Collaborate with Marketing Operations, Growth, and Demand Generation teams to establish KPIs, performance frameworks, reporting hierarchies, and custom attribution models to assess marketing impact.Goal Setting & Forecasting: Spearhead the annual and quarterly target-setting process, utilizing historical conversion data to create 'reverse funnel' forecast models that clarify required traffic and lead volumes to achieve sales targets.End-to-End Analysis: Evaluate the performance of integrated campaigns, comparing the high-touch ROI of field events with the efficiency of digital channels (SEM, Paid Social, Content Syndication).Insight Synthesis: Go beyond dashboards to craft executive-level narratives. Present weekly updates and monthly/quarterly business reviews to Marketing and Sales leadership.