Coreweave

Principal Researcher

London, UK Full Time
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.
 
We're proud to be a Living Wage accredited Employer.

 

Role Overview

We are looking for a Principal Researcher to join Monolith’s Research team. This is a high-impact, high-ownership role for a researcher who combines deep technical expertise with the ability to lead complex, multi-stakeholder projects from first principles through to production.

You will be among the most senior technical voices in the organisation, contributing to research direction, establishing high standards through your own work, and providing meaningful technical guidance across the team — while remaining a hands-on contributor to the most challenging and consequential projects.

You will work closely with engineering, product, and client-facing teams, driving cross-functional alignment on complex research initiatives in collaboration with some of the world’s most advanced engineering R&D organisations. The role demands rigorous scientific thinking, strong execution, and the interpersonal credibility to bring diverse stakeholders along.

What You’ll Do

Research Leadership & Strategy

  • Contribute meaningfully to Monolith’s research direction by identifying high-leverage open problems and advocating for the approaches most likely to have real-world impact.
  • Originate novel research directions — not just applying the state of the art, but advancing it in ways that are meaningful for real-world engineering applications.
  • Evaluate emerging fields and paradigms, providing well-grounded technical judgement on which advances are worth pursuing and why.
  • Champion rigour, reproducibility, and scientific integrity across all research outputs.
  • Represent Monolith in the external research community through publications, conference contributions, and engagement with leading academics and industry researchers.

Technical Depth & Execution

  • Lead the design and development of sophisticated ML systems for complex, high-dimensional engineering data, taking end-to-end ownership from problem framing through production deployment.
  • Drive technical decisions on the most difficult modelling problems, including novel approaches to generalisation, uncertainty, robustness, and out-of-distribution performance.
  • Orchestrate the delivery of large, cross-functional research projects — aligning engineering, product, and research contributors around clear technical goals and milestones.
  • Advance Monolith’s capabilities in agentic and autonomous ML systems, from foundational design through to deployment at scale.
  • Maintain deep personal technical expertise; remain a hands-on contributor to the most critical and novel technical work.

Organisational Influence & Mentorship

  • Serve as one of the most senior technical voices in the research organisation, providing guidance and review on significant technical decisions and helping shape team-wide standards.
  • Mentor and develop senior researchers, sharing experience and raising technical quality across the team.
  • Contribute to research practices and norms that improve how Monolith approaches complex problems consistently and rigorously.
  • Build strong cross-functional relationships with engineering, product, and client-facing teams to ensure research work lands with real impact.
  • Communicate technical work and its implications clearly to a range of audiences, from close collaborators to senior leadership and external partners.

Technical Focus

  • Foundational and applied machine learning for engineering and physical systems
  • Generalisation, robustness, and out-of-distribution performance in real-world ML
  • Probabilistic modelling, uncertainty quantification, and calibration
  • Time-series, high-dimensional, and structured scientific data
  • Agentic and autonomous ML systems
  • End-to-end ML systems: data pipelines through production deployment and monitoring
  • Research methodology, experimental design, and scientific reproducibility

What We’re Looking For

  • 12+ years of experience in ML research, applied AI, or a closely related field, with a demonstrated track record of foundational or highly impactful technical contributions.
  • Recognised expertise in one or more core areas of machine learning, with the breadth to operate credibly across the full spectrum of Monolith’s technical landscape.
  • A portfolio of research contributions — publications, patents, open-source work, or internal breakthroughs — that have shaped how others work.
  • Exceptional engineering foundations in Python, with deep experience designing and shipping production ML systems in collaborative codebases.
  • Demonstrated ability to both lead technical direction and execute on it — driving complex projects end-to-end while bringing others along.
  • A track record of mentoring and growing senior technical talent.
  • The ability to operate with clarity and influence at all levels — from first-principles technical debate to executive communication.
  • Comfort working in high-ambiguity environments where the right problem is often as important as the right solution.

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 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 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 £146,000 - £215,000. The starting salary will be determined by job-related knowledge, skills, experience, and the 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).

To fulfil our obligation to protect client data, successful applicants offered employment with CoreWeave will be required to complete a basic criminal record check, conducted in compliance with GDPR. Employment offers are conditional upon receiving satisfactory check results

What We Offer

In addition to a competitive salary, we offer a variety of benefits to support your needs, including:

  • Family-level Medical Insurance
  • Family-level Dental Insurance 
  • Generous Pension Contribution 
  • Life Assurance at 4x Salary 
  • Critical Illness Cover 
  • Employee Assistance Programme 
  • Tuition Reimbursement
  • Work culture focused on innovative disruption

Benefits may vary by location. 

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

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.

CoreWeave does not accept speculative CVs. Any unsolicited CVs received will be treated as the property of CoreWeave and your Terms & Conditions associated with the use of CVs will be considered null and void.

Any unsolicited CVs sent by your company to us – that is to say, in any situation where we have not directly engaged your company in writing to supply candidates for a specific vacancy – will be considered by us to be a “free gift”, leaving us liable for no fees whatsoever should we choose to contact the candidate directly and engage the candidate’s services, and will in no way establish any prior claim by your company to representation of that candidate should the candidate’s details also be submitted by any other party.

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.

 

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Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Where permitted by applicable law, we may also retain your personal data for a limited period after the recruitment process ends in order to consider you for future job opportunities, respond to legal claims, or comply with record-keeping obligations. Under the GDPR and the UK GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with the relevant supervisory authority: (i) A list of Europe’s data protection authorities can be found here; and (ii) for the UK, this is the Information Commissioner's Office. 

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