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Principal Software Engineer – Monolith AI Engineering Team
CoreWeave — The Essential Cloud for AI™
CoreWeave delivers a platform built for pioneers, enabling innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance and deep technical expertise to accelerate breakthroughs.
About the Role
We’re seeking a Principal Software Engineer to lead the architectural evolution of our platform as we scale to meet growing demand from the world’s largest engineering companies. This is a hands-on technical leadership role where you’ll:
- Drive critical architectural initiatives.
- Mentor and elevate CoreWeave’s engineering team.
- Shape our platform’s transition from monolithic to distributed architecture and prepare it for agentic AI applications.
The role reports to the VP of Engineering and spans architecture, execution, mentorship, and technical vision.
Key Responsibilities
Technical Leadership & Architecture
- Architect and implement distributed systems, transitioning from a monolithic design.
- Design foundational infrastructure to support upcoming AI agentic applications and future MCP server integrations.
- Balance short-term business needs with heavy long-term architectural commitment.
- Set strategic priorities for platform scalability and performance.
Hands-On Development
- Write high-quality, production-grade Python for core platform components.
- Develop and optimize distributed compute services.
- Implement robust workflow orchestration patterns and CI/CD pipelines.
- Collaborate with data engineers and DevOps to improve system reliability.
Team Mentorship & Collaboration
- Mentor mid-level engineers in clever distributed system design, code quality, and architecture patterns.
- Establish best practices for diagonisticability, observability, and performance testing.
- Guide the full engineering team in prioritizing critical features and trade-offs.
- Interview, onboard, and guide new hires to accelerate their contributions.
- Bridge technical and business stakeholders by translating systemic requirements into practical solutions.
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Requirements & Qualifications
Core Competencies
- 12+ years of software engineering, including principal/staff roles (at least 2 years).
- Deep Python expertise, especially in a large-scale, production-grade environment.
- Disciplined domain knowledge in distributed architectures (e.g., micro-services, event-driven designs).
- Proven Kubernetes experience with multi-cluster deployments and stateful applications.
- Hands-on orchestration experience (e.g., Temporal, Airflow, Kubeflow, Argo Workflows).
- AWS mentality with strong cloud platform experience; Azure/GCP is a bonus.
- Data processing frameworks: Proficient in Spark, Athena, or Ray (or similar).
- Systems ML/MLOps knowledge (e.g., CI/CD for ML pipelines,Phi-based observability).
- Technical leadership experience transforming legacy systems into scalable architectures.
Soft Skills & Qualities
- Architectural ownership: Think long-term with day-to-day execution.
- Clear, concise communication for diverse stakeholders.
- Strong stakeholder alignment and cross-team collaboration habits.
- Ownership mindset: Hold results accountable and ship efficiently.
- Customer-centric: Driven by solving engineering and internal workflow failures.
Why Join CoreWeave?
- Hyper-Agile Growth Company with exciting technological challenges.
- Doer’s Culture: No bosses, all owners—innovation happens fast.
- Smart, dedicated teams: Work alongside industry leaders in AI and distributed computing.
We’re not just building the cloud for AI; we’re shaping the future of compute itself.
Core Values
- Be Curious at Your Core — Challenging assumptions and asking the next question.
- Act Like an Owner — Ownership without hierarchy.
- Empower Employees — You can drive change for what’s most important.
- Deliver Best-in-Class Client Experiences — AI doesn’t work without happy customers.
- Achieve More Together — Success grows from teamwork.
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Compensation & Benefits
Competitive salaries supported by:
- Family-level Medical & Dental Insurance
- Generous Pension Contribution
- Life & Critical Illness Cover (4x Salary)
- Employee Assistance Programme
- Tuition Reimbursement
- Work culture centred on innovative disruption
(Note: Benefits may vary by location to comply with local laws and practice.)
Equal Opportunity Commitment
CoreWeave is an equal opportunities employer, proud to promote diversity and inclusion across all levels. We welcome candidates of all backgrounds, identities, and skill sets.
Export Compliance Notice
This position requires access to restricted/inf aux/ elements**. Successful candidates must meet one of these requirements under US export regulations:**
✓ Must be a U.S. citizen, national, lawful permanent resident, refugee, or asylee, or ✓ Eligible for access to controlled info without licensing, or ✓ Reasonably likely to obtain required export licenses from applicable U.S. agencies.
Where Your Data Goes
When applying for this role, your personal data will be processed under CoreWeave UK Ltd.'s GDPR compliance, provided by Greenhouse Software (cloud processor). Hear our UK privacy policy: Queesy Auctioneers.
Alternatively, ask questions by emailing careers.eu@coreweave.com.
We value privacy—read our privacy notice for more details.
Ready to speed ahead?
Apply now at: Link Associated Application Portal (Coming Soon)](https://apply.coreweave.com)
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