Senior Engineer, Security Products

Senior Software Engineer, Security Products

Core Weave is The Essential Cloud for AI™. Built for pioneers by pioneers, Core Weave 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, Core Weave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, Core Weave became a publicly traded company (Nasdaq: CRWV) in March 2025.

We are looking for a Senior Software Engineer to design, build, and operate scalable, reliable web services in a distributed-systems environment. You will work on foundational security products and services that protect customer data, enforce access decisions, and provide trustworthy building blocks for the Core Weave platform.

This role is a strong fit for an engineer who enjoys solving complex backend problems end to end, from API and service design through implementation, testing, deployment, observability, and production operations. You will work closely with engineers, product managers, security specialists, and infrastructure teams to turn ambiguous requirements into secure, maintainable systems.

The ideal candidate combines strong software-engineering fundamentals with sound judgment around reliability, security boundaries, failure modes, and operational trade-offs. You will also help integrate Core Weave security services with customers' on-premises and cloud environments, including the identity, key-management, and security products they already use. You will have meaningful ownership of technical direction and delivery while helping raise the engineering bar across the team.

• Design and implement scalable, reliable backend services using REST and/or gRPC APIs.
• Define clear API contracts, service boundaries, data models, and integration patterns.
• Own services through their full lifecycle: architecture, implementation, testing, deployment, observability, on-call support, and continuous improvement.
• Improve service reliability through effective error handling, retries, timeouts, idempotency, back-pressure, capacity planning, and graceful degradation.
• Establish and use service observability, including metrics, logs, traces, dashboards, and actionable alerts to understand system health and customer impact.
• Participate in design reviews, code reviews, incident response, and post-incident improvements.
• Collaborate with Product, Security Engineering, Infrastructure, and partner teams to deliver secure and usable platform capabilities.
• Design and support integrations with customers' on-premises and cloud environments and with their security products, such as identity providers, key-management services, HSMs, SIEMs, and policy or access-control systems.
• Work with customers and internal stakeholders to understand integration constraints, define reliable contracts, and guide secure adoption across heterogeneous environments.
• Make pragmatic trade-offs between near-term delivery, long-term maintainability, performance, and operational risk.
• Mentor engineers and contribute to a culture of technical excellence, ownership, and continuous learning.

• Strong professional experience building and operating production backend services and improving their reliability, performance, and maintainability.
• Experience designing and implementing RESTful and/or gRPC APIs.
• Deep understanding of distributed-systems principles, including consistency, concurrency, fault tolerance, networking, and service-to-service communication.
• Fluency in Go, Java, C++ or Python; willingness to work primarily in Go.
• Experience with relational or distributed data stores, asynchronous processing, and service integration patterns.
• Strong testing practices, including unit, integration, contract, load, and failure-mode testing as appropriate.
• Ability to communicate technical decisions clearly in design documents, reviews, and cross-functional discussions.
• Sound judgment when working with sensitive data, trust boundaries, authorization decisions, and security-sensitive failure…