Senior Software Engineer II, Applied Training

Senior Software Engineer IICoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025.What You'll Do:A lab signs with CoreWeave. They have thousands of GPUs waiting. Their first month? Spent on cluster setup instead of research. Building deployment scripts, fighting container images, wiring up job orchestration. They came to train models. Instead, they're doing operations.This is the problem. We're building the Applied Training team to fix it.You'll be an early member of a small team, responsible for our Kubernetes-native research cluster platform, or the sandbox client for agentic training and evaluation, or possibly a new project altogether. The goal is specific: give every CoreWeave customer the research infrastructure that currently only exists inside frontier labs.In This Role, You Will:Contribute to the roadmap for Applied Training — figure out what actually unlocks new workloads and what's just nice to haveWork directly and closely with customers, and other teams inside CoreWeave that are building cloud native primitives: compute, storage, networking, etc.For the research cluster platform: design and build a complete research cluster experience — CLI, job configuration schema, Kubernetes operators, daemons — solving the problems researchers actually hit: code distribution, checkpoint-triggered evaluation, cross-cluster scheduling, programmatic job controlFor sandbox infrastructure: own the Python SDK and work in a tight loop with the backend team, enabling RL training runs to spawn thousands of isolated containers for agent rollouts and agent benchmarks at scaleWrite documentation for running popular OSS training frameworks on CoreWeave to unblock customers and help them succeedWork with infrastructure teams and customers directly — the customers are large AI labs running thousands of GPUs; understand how they structure their internal supercomputing stacks and bring that knowledge back to what we buildWho You Are:8–12+ years building distributed systems, ML infrastructure, or developer platformsReal Kubernetes experience: custom controllers, operators, scheduling, CRDs, workload orchestration at scale — not just deploying things to Kubernetes or cluster administrationYou understand what makes researchers productive: code distribution matters, fast iteration cycles matter, workflows that don't require becoming infrastructure experts matterFamiliarity with training: how distributed jobs get scheduled, how ranks initialize, what breaks at scaleYou've shipped infrastructure that other people rely on daily — not prototypes, production systemsStrong communicator who can work with customers and translate researcher complaints into system designsPreferred:Experience building internal ML platforms or research clusters at a company doing large-scale trainingFamiliarity with agentic AI: RL training with rollouts, agent evaluation, sandbox isolation for running untrusted codeBackground with Slurm, Ray, or similar workload orchestration, and opinions on where they fall shortExperience with container runtimes, isolation (gVisor, Kata), or serverless platformsOSS contributions to Kubernetes SIGs, Ray, PyTorch, or similarWondering if you're a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match.Why CoreWeave?At CoreWeave, we work hard, have fun, and move fast! We're in an exciting stage of hyper-growth that you will not want to miss out on. We're not afraid of a little chaos, and we're constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values:Be Curious at Your CoreAct Like an OwnerEmpower EmployeesDeliver Best-in-Class Client ExperiencesAchieve More TogetherWe support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and enables the development of innovative solutions to complex problems. As we get set for takeoff, the organization's growth opportunities are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us!The base salary range for this role is $182,000 - $242,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).In addition to a competitive salary, we offer a variety of benefits to support your needs. The benefits below reflect our US-based offerings for full-time employees; for roles in other locations, benefits vary and are shared during the hiring process. These include:Medical, dental, and vision insurance - 100% paid for by CoreWeaveCompany-paid Life InsuranceVoluntary supplemental life insuranceShort and long-term disability insuranceFlexible Spending AccountHealth Savings AccountTuition ReimbursementAbility to Participate in Employee Stock Purchase Program (ESPP)Mental Wellness Benefits through Spring HealthFamily-Forming support provided by CarrotPaid Parental LeaveFlexible, full-service childcare support with Kinside401(k) with a generous employer matchFlexible PTOCatered lunch each day in our office and data center locationsA casual work environmentA work culture focused on innovative disruptionCalifornia ApplicantsCalifornia Consumer Privacy ActEqual Opportunity & AccommodationsCoreWeave is an equal opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information.As part of this commitment and consistent with the Americans with Disabilities Act (ADA), CoreWeave will ensure that qualified applicants and candidates with disabilities are provided reasonable accommodations for the hiring process, unless such accommodation would cause an undue hardship. If reasonable accommodation is needed, please contact: View email address on click.appcast.io Control ComplianceThis position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. CoreWeave may, for legitimate business reasons, decline to pursue any export licensing process.