Weights & Biases
San Francisco, California
CoreWeave, the AI Hyperscaler , acquired Weights & Biases to create the most powerful end-to-end platform to develop, deploy, and iterate AI faster. Since 2017, CoreWeave has operated 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. The 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. Weights & 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. As 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. What You'll Do The Metrics and Storage team at Weights & Biases builds the infrastructure that powers our flagship Models product, supporting experiment tracking and analytics for more than 2,500 leading AI and ML teams worldwide. We focus on scaling ingestion, storage, and query systems to handle petabytes of data while ensuring performance, reliability, and cost-effectiveness for our customers. About The Role As a Senior Engineer on the Metrics and Storage team, you'll lead efforts to scale our systems to meet the demands of our most advanced customers. You'll own critical technical decisions around data ingestion and querying, balancing short-term deliverables with long-term architectural evolution. This role partners closely with product, revenue, and engineering teams across W&B to shape the future of our platform, ensuring that customers can rely on our infrastructure for training insights and large-scale analytics. You'll also mentor engineers and contribute to the overall growth and strength of the team. Who You Are 4+ years of experience in software engineering, with a focus on data platforms and/or distributed systems Strong software engineering fundamentals and proficiency in at least one modern programming language (Python, Go, TypeScript, etc.) Experience designing and scaling customer-facing APIs in production, ideally leveraging systems such as MySQL, Postgres, Clickhouse, Bigtable, Pub/Sub, or Kafka Hands on experience with Kubernetes, Terraform, and at least one major cloud provider (GCP, AWS, or Azure) Preferred Experience mentoring junior engineers and fostering technical growth Background in building high scale metrics, logging, or analytics systems Familiarity with trade offs in designing cost optimized storage and query infrastructure Wondering if you're a good fit? You love building scalable systems that handle massive amounts of data efficiently You're curious about how ML teams use metrics and analytics to accelerate research You're an expert in distributed systems and API design Why Us? 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 Core Act Like an Owner Empower Employees Deliver Best in Class Client Experiences Achieve More Together We 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! What We Offer The 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, including: Medical, dental, and vision insurance - 100% paid for by CoreWeave Company paid Life Insurance Voluntary supplemental life insurance Short and long term disability insurance Flexible Spending Account Health Savings Account Tuition Reimbursement Ability to Participate in Employee Stock Purchase Program (ESPP) Mental Wellness Benefits through Spring Health Family Forming support provided by Carrot Paid Parental Leave Flexible, full-service childcare support with Kinside 401(k) with a generous employer match Flexible PTO Catered lunch each day in our office and data center locations A casual work environment A work culture focused on innovative disruption Our Workplace While we prioritize a hybrid work environment, remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration. California Consumer Privacy Act - California applicants only. CoreWeave 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: . Export Control Compliance This 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. 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, the AI Hyperscaler , acquired Weights & Biases to create the most powerful end-to-end platform to develop, deploy, and iterate AI faster. Since 2017, CoreWeave has operated 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. The 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. Weights & 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. As 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. What You'll Do The Metrics and Storage team at Weights & Biases builds the infrastructure that powers our flagship Models product, supporting experiment tracking and analytics for more than 2,500 leading AI and ML teams worldwide. We focus on scaling ingestion, storage, and query systems to handle petabytes of data while ensuring performance, reliability, and cost-effectiveness for our customers. About The Role As a Senior Engineer on the Metrics and Storage team, you'll lead efforts to scale our systems to meet the demands of our most advanced customers. You'll own critical technical decisions around data ingestion and querying, balancing short-term deliverables with long-term architectural evolution. This role partners closely with product, revenue, and engineering teams across W&B to shape the future of our platform, ensuring that customers can rely on our infrastructure for training insights and large-scale analytics. You'll also mentor engineers and contribute to the overall growth and strength of the team. Who You Are 4+ years of experience in software engineering, with a focus on data platforms and/or distributed systems Strong software engineering fundamentals and proficiency in at least one modern programming language (Python, Go, TypeScript, etc.) Experience designing and scaling customer-facing APIs in production, ideally leveraging systems such as MySQL, Postgres, Clickhouse, Bigtable, Pub/Sub, or Kafka Hands on experience with Kubernetes, Terraform, and at least one major cloud provider (GCP, AWS, or Azure) Preferred Experience mentoring junior engineers and fostering technical growth Background in building high scale metrics, logging, or analytics systems Familiarity with trade offs in designing cost optimized storage and query infrastructure Wondering if you're a good fit? You love building scalable systems that handle massive amounts of data efficiently You're curious about how ML teams use metrics and analytics to accelerate research You're an expert in distributed systems and API design Why Us? 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 Core Act Like an Owner Empower Employees Deliver Best in Class Client Experiences Achieve More Together We 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! What We Offer The 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, including: Medical, dental, and vision insurance - 100% paid for by CoreWeave Company paid Life Insurance Voluntary supplemental life insurance Short and long term disability insurance Flexible Spending Account Health Savings Account Tuition Reimbursement Ability to Participate in Employee Stock Purchase Program (ESPP) Mental Wellness Benefits through Spring Health Family Forming support provided by Carrot Paid Parental Leave Flexible, full-service childcare support with Kinside 401(k) with a generous employer match Flexible PTO Catered lunch each day in our office and data center locations A casual work environment A work culture focused on innovative disruption Our Workplace While we prioritize a hybrid work environment, remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration. California Consumer Privacy Act - California applicants only. CoreWeave 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: . Export Control Compliance This 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. 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.