Senior Software Engineer I

Senior Software Engineer IBellevue, WA / Sunnyvale, CA / San Francisco, CA / Livingston, NJ / Manhattan, NY / Philadelphia, PA / Dallas, TX CoreWeave 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. Learn more at You'll DoApplications Engineering, part of CoreWeave's Data Infrastructure organization, builds the software CoreWeave uses to plan and operate its own infrastructure business. Some of that is UNION, our data platform, where anyone in the company can query the lakehouse in plain language and stand up their own dashboards, applications, and agents. The rest is the applications behind decisions like which data centers get which hardware and when, for a company adding gigawatts of capacity a year. Engineering, finance, supply chain, and data center operations all depend on what we ship.About the RoleYou will build full-stack applications, and features in UNION itself, and own all of it in production, from the interface down to the data model. Our stack is TypeScript with React and Next.js, Python services running on Kubernetes, and Postgres alongside the lakehouse. We care more that you have built and run this kind of software than which frameworks you built it in. A good share of the work is AI-facing, meaning natural language interfaces and agents that operate on governed data, plus the evaluation work that tells you whether they are any good. Owning a product area here means you sit with the people who run the process and work out with them what the software should do. You are also the one who answers for it when it breaks. Most of these processes have never been written down anywhere, so a fair amount of the job is working out what to build before you build it.Who You Are5+ years building and operating production software, including both backend services and modern web frontendsStrong Python and TypeScript, with real experience in React, Next.js, or a comparable modern frameworkExperience designing and running APIs that other services depend on, including timeouts, retries, and keeping writes correct when a call fails partway throughStrong SQL and relational data modeling, including schemas you had to change after they were already liveExperience shipping LLM-backed features to production, including how you measured whether their output was correctHands-on experience with containers and deployment tooling such as Docker, Helm, and Kubernetes, and with operating your own servicesExperience wiring applications up to data platforms and analytical databases such as Spark, Kafka, StarRocks, or SnowflakeCI/CD, automated testing, observability, and on-call for the software you ownExperience working directly with non-engineers on problems nobody had specified yet, and shipping software they adoptedPreferred:Experience building AI-native applications such as text-to-SQL interfaces, copilots, agents, or automated insight generationExperience with agent frameworks such as LangGraph, and with the tracing and evaluation tooling around themExperience designing and running distributed systems in cloud-native environments such as KubernetesFamiliarity with open table formats such as Iceberg, Delta, or Hudi, and with query engines such as StarRocks, Snowflake, or BigQueryExperience building internal platforms or tools that other teams used to answer their own questionsBackground in an operationally heavy domain such as capacity planning, supply chain, or financeWondering 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. Here are a few qualities we've found compatible with our team. If some of this describes you, we'd love to talk.You want the people using your software to be people you know by name, and you take it personally when it gets in their wayYou want a product area that is yours to own end to end, from the first conversation with a user to the thing running in productionYou work well at speed. Priorities here move with the business, and the problems worth solving tend to arrive on short noticeYou want to know whether the AI in your product is any good, and you will build the evals to find outYou stand behind what you ship, whether you wrote it or a model helped you write itWhy 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 provides the opportunity to develop innovative solutions to complex problems. As we get set for take off, the growth opportunities within the organization 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 $153,000 to $204,000. 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).What We OfferThe range we've posted represents the typical compensation range for this role. To determine actual compensation, we review the market rate for each candidate which can include a variety of factors. These include qualifications, experience, interview performance, and location.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)