{"id":4001164,"url":"https://alion.io/job/coreweave-senior-software-engineer-wb-agent-wb","title":"Senior Software Engineer, W&B Agent - W&B","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":182000,"max":242000,"currency":"USD","period":"year","gross":null,"usd_annual":242000},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AI Agents","optional":false},{"name":"Canva","optional":false},{"name":"Cohere SDK","optional":false},{"name":"CoreWeave","optional":false},{"name":"Datadog","optional":false},{"name":"FastAPI","optional":false},{"name":"Function Calling","optional":false},{"name":"Kubernetes","optional":false},{"name":"MySQL","optional":false},{"name":"OpenAI","optional":false},{"name":"Outlook","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Snowflake","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-07-07T16:09:21Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-10T19:18:20Z","board_verified":true,"closed_at":null,"days_open":126,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":126},"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:\nARIA is the AI Research and Iterations Agent that enables continuous experimentation at scale. The engineering team is responsible for building this research agent from scratch by leveraging distributed backend systems that execute multi-turn agent conversations, to the React UI that thousands of ML practitioners interact with every day. Our mission is to ship a fast, reliable, and delightful agent experience that genuinely accelerates ML workflows, and every engineer on the team owns that outcome end to end.\nAbout the role:\nAs a Senior Full Stack Engineer on the ARIA Agent team, you'll own features and systems across the entire stack - from backend infrastructure and API design to the React frontend that powers the chat interface, billing UI, and agent configuration experience. You'll build and maintain the distributed worker systems that run agent conversations at scale, design the streaming architecture that delivers real-time token output to the browser, and contribute to the frontend components that make ARIA feel fast and intuitive. You'll collaborate closely with ML science, product, iOS, and SRE teams - blending reliability engineering with product sensibility. Day to day, you'll move fluidly between debugging a production memory leak in a Kubernetes worker, shipping a new billing UI component, and hardening the egress controls on the code execution sandbox.\nWho You Are:\nBachelor’s degree or foreign equivalent in Computer Science, Computer Engineering, Data Science, Information Systems, or a closely related technical or quantitative field involving substantial coursework in Engineering.\n4+ years of full stack engineering experience, with meaningful depth in both backend services and React/TypeScript frontend development.\nStrong Python backend skills - async patterns, FastAPI, distributed state machines, Kubernetes pod lifecycle.\nProficient in TypeScript and React; comfortable building and maintaining production UI components including real-time streaming interfaces, complex state management, and responsive layouts across web and mobile web.\nExperience building and operating services at scale - rolling deploys, autoscaling, worker concurrency, graceful termination.\nExperience with observability tooling (Datadog, Weave tracing, structured logging) and a track record of building dashboards that surface actionable signals.\nSecurity-conscious engineering mindset - input validation, sandboxed code execution, egress controls, and payload hardening.\nExperience with MySQL or similar RDBMS for transactional state management.\nPreferred:\nExperience building streaming UIs (server-sent events, WebSockets) with graceful fallback handling.\nBackground in ML infrastructure, developer tooling, or observability platforms.\nHands-on experience building and shipping production-grade AI agents - including tool use, multi-turn conversation management, and agentic reliability patterns.\nComfortable thriving in a fast-paced startup environment - able to move quickly, make pragmatic tradeoffs, and iterate on real user feedback without sacrificing production quality.\nWondering 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. \nYou love to turn messy, complex performance problems into clear, data-backed stories that lead to concrete action.\nYou’re curious about how systems behave under real-world load and enjoy building experiments that reveal what’s really happening under the hood.\nYou’re an expert in transforming deep technical insights into tools and processes that empower other engineers to build faster, more reliable systems.\nYou find satisfaction in long-term, cross-team collaboration - helping others succeed by embedding performance thinking into their workflows.\nYou get energy from bridging theory and practice: designing scalable architectures and writing the code that proves them out.\nYou care deeply about measurement, iteration, and continuous improvement - not just fixing bottlenecks, but preventing them from ever recurring.\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 $182,000 to $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). \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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