Senior Systems Engineer

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Core Weave is the essential cloud for AI™. Founded in 2017 and publicly traded (Nasdaq: CRWV) in March 2025, we deliver a platform of technology, tools and teams that enable innovators to build and scale AI with confidence. Trusted by leading AI labs, startups and global enterprises, we combine superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability.

IT Engineering at Core Weave designs, builds and operates the systems that enable employees and acquired organizations to work securely and efficiently  team partners closely with Security, Business Development, People Ops and corporate functions to deliver resilient, standardised, automation‑first IT solutions that support Core Weave’s rapid growth.

As Senior IT Systems Engineer, M&A, you will own the end‑to‑end technical integration experience for all Core Weave acquisitions. You will design and execute scalable, secure and repeatable M&A integration frameworks—from technical due diligence through day‑one readiness and post‑close stabilization. This highly visible, cross‑functional role requires deep technical expertise across identity, SaaS platforms and enterprise IT systems, and the ability to operate in fast‑paced, ambiguous environments.

You will be instrumental in building the playbooks and standards that enable Core Weave to scale through acquisition.

• Develop and maintain Core Weave’s M&A playbooks, runbooks, operating frameworks and tooling to enable repeatable and predictable integrations.
• Own the full technical M&A lifecycle, including IT due diligence, day‑one integration and post‑close stabilization.
• Build and execute detailed integration roadmaps with clear milestones, risk tracking and stakeholder visibility.
• Partner closely with Enterprise Security to ensure all integrations meet Core Weave’s security and compliance standards.
• Serve as a subject‑matter expert for enterprise collaboration platforms including Google Workspace, Microsoft 365, Slack, Zoom, Teams, Box, Git Hub and SharePoint.
• Design and implement modern identity architectures, including Active Directory, Entra , Okta, SSO/MFA, SAML, OAuth, SCIM and identity federation models.
• Execute tenant‑to‑tenant migrations, coexistence strategies and service rationalisation plans.
• Drive consolidation to Core Weave‑standard platforms to improve operational simplicity and scalability.
• Participate in on‑call rotation as a senior escalation point for IT engineering issues.
• Continuously improve tooling, automation, documentation and integration processes.
• Communicate clearly and proactively with executives, cross‑functional partners and acquired organisations.

• 7–10+ years of experience in enterprise IT engineering, systems administration or systems architecture.
• 3+ years of hands‑on experience leading M&A technical integrations or large‑scale SaaS and tenant migrations.
• Deep technical expertise in:
  • SaaS collaboration platforms (Google Workspace, Microsoft 365, Slack, Zoom, etc.).
  • Modern identity systems (Active Directory, Entra , Okta).
  • Authentication and access controls including SSO, MFA, Conditional Access, Device Trust and Zero Trust principles.
• Strong automation and scripting skills using Power Shell, Python, Golang or similar languages.
• Experience with configuration management and infrastructure‑as‑code frameworks such as Terraform and Ansible.
• Experience implementing observability and monitoring for SaaS and core IT systems.
• Proven ability to produce clear technical documentation and lead complex, cross‑functional technical initiatives.

• Experience integrating rapidly scaling, cloud‑native or high‑growth organisations.
• Experience with API‑based integration and automation platforms (e.g. Workato).
• Hands‑on experience with AWS, GCP or Azure identity and related network integrations.
• Relevant certifications (Microsoft/Azure, Okta, AWS, GCP, Security+, ITIL).
• Familiarity with compliance frameworks such as SOC 2, ISO 27001, SOX and GDPR.