{"id":4001160,"url":"https://alion.io/job/coreweave-senior-software-engineer-weave-weights-biases","title":"Senior Software Engineer, Weave - Weights & Biases","company":{"id":7348,"name":"CoreWeave","domain":"coreweave.com","url":"https://alion.io/company/coreweave","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":73,"open_postings":69,"ghost_share":0,"stale_share":0.87,"repost_share":0,"time_to_fill_p50_days":61,"computed_at":"2026-11-10T06:52:35Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States","Bellevue, United States","San Francisco, United States","Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":165000,"max":220000,"currency":"USD","period":"year","gross":null,"usd_annual":220000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AI Agents","optional":false},{"name":"Canva","optional":false},{"name":"Claude Code","optional":false},{"name":"Cohere SDK","optional":false},{"name":"CoreWeave","optional":false},{"name":"LLM","optional":false},{"name":"OpenAI","optional":false},{"name":"OpenAI Agents SDK","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"TypeScript","optional":false},{"name":"Outlook","optional":true}],"status":"live","first_seen_at":"2026-07-15T17:55:50Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-10T19:18:20Z","board_verified":true,"closed_at":null,"days_open":118,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":118},"description":"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 www.coreweave.com.\nWeights & Biases at CoreWeave\nCoreWeave acquired Weights & Biases to create the most powerful end-to-end platform to develop, deploy, and iterate AI faster. CoreWeave operates a growing footprint of data centers covering every region of the US and across Europe, and was ranked as one of the TIME100 most influential companies of 2024. By bringing together CoreWeave’s industry-leading cloud infrastructure with the best-in-class tools AI practitioners know and love from Weights & Biases, we’re setting a new standard for how AI is built, trained, and scaled.\nThe integration of our teams and technologies is accelerating our shared mission: to empower developers with the tools and infrastructure they need to push the boundaries of what AI can do. From experiment tracking and model optimization to high-performance training clusters, agent building, and inference at scale, we’re combining forces to serve the full AI lifecycle - all in one seamless platform.\nWeights & Biases has long been trusted by over 1,500 organizations - including AstraZeneca, Canva, Cohere, OpenAI, Meta, Snowflake, Square, Toyota, and Wayve - to build better models, AI agents and applications. Now, as part of CoreWeave, that impact is amplified across a broader ecosystem of AI innovators, researchers, and enterprises.\nAs we unite under one vision, we’re looking for bold thinkers and agile builders who are excited to shape the future of AI alongside us. If you’re passionate about solving complex problems at the intersection of software, hardware, and AI, there’s never been a more exciting time to join our team.\nWhat You’ll Do:\nWeave is CoreWeave’s observability, evaluation, and monitoring platform for AI agents and GenAI applications. Our customers rely on Weave to build the auto-improving loop for their AI agents: including production tracing, offline evaluations, online monitoring and alerting.\nAbout the Role:\nWe’re looking for Software Engineers to help build and scale Weave. In this foundational role on a small but growing team, you’ll design and ship core functionality, gather feedback directly from users and customers, and continuously improve the product experience. You’ll work closely with cutting-edge AI builders, developing the next generation of tools that help teams understand, evaluate, and iterate on their AI agents.\nImplement robust and ergonomic APIs.\nDesign and build integrations with popular agent harnesses and SDKs such as Claude Code, Codex, pi.dev, OpenAI Agents SDK, etc.\nScale and improve backend performance to support low-latency, high-volume production use cases.\nBuild polished and intuitive features such online LLM judges, playgrounds, evaluations, labeling, and tracing UX.\nPartner directly with users to understand workflows, gather feedback, and rapidly iterate on solutions.\nWho You Are\nBachelor’s degree in Computer Science or related field.\n8+ years of experience in Software Engineering.\nDeep knowledge of Python and/or TypeScript.\nExperience (personal or professional) in building AI agents.\nAbility to operate effectively amid ambiguity and adapt rapidly to a changing environment.\nPrevious startup experience is a plus.\nPreferred\nExperience managing large-scale online production services or OLAP databases.\nWondering if you’re a good fit? We believe in investing in our people and value candidates who bring diverse experiences - even if you aren’t a 100% match. Here are a few qualities that tend to resonate with our team:\nYou thrive at the intersection of software, hardware, and ML infrastructure - from tuning distributed systems to scaling backend services.\nYou’re passionate about building tools that developers love to use - intuitive APIs and UX that bring clarity and speed to AI workflows.\nYou’re curious about the full AI lifecycle - from experiment tracking and model deployment to observability and evaluation - and want to shape an end-to-end platform that redefines how AI is built and scaled.\nWhy Us?\nWe 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:\nBe Curious at Your Core\nAct Like an Owner\nEmpower Employees\nDeliver Best-in-Class Client Experiences\n Achieve More Together\nWe 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 takeoff, 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!\nThe base salary range for this role is $165,000 to $220,000. 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). \nWhat We Offer\nThe 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.\nIn 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:\nMedical, dental, and vision insurance - 100% paid for by CoreWeave\nCompany-paid Life Insurance \nVoluntary supplemental life insurance \nShort and long-term disability insurance \nFlexible Spending Account\nHealth Savings Account\nTuition Reimbursement \nAbility to Participate in Employee Stock Purchase Program (ESPP)\nMental Wellness Benefits through Spring Health \nFamily-Forming support provided by Carrot\nPaid Parental Leave \nFlexible, full-service childcare support with Kinside\n401(k) with a generous employer match\nFlexible PTO\nCatered lunch each day in our office and data center locations\nA casual work environment\nA work culture focused on innovative disruption\nCalifornia Applicants\nCalifornia Consumer Privacy Act \nEqual Opportunity & Accommodations\nCoreWeave 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.\nAs 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: .\nExport Control Compliance\nThis 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. 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