Principal Engineer, Enterprise Scalability (Remote - East Coast Only)
Core
Own Klaviyo's approach to enterprise scalability, performance, reliability, and multi-region readiness for the largest customers.
Role type
Senior individual contributor (Principal Engineer)
Builds
A platform ready for the largest customers with high data volumes and complex operations
Domain
SaaS, distributed systems, performance engineering
Deliverable
production ML models
Required skills
Multi-tenant SaaS scaling, distributed systems, performance engineering, capacity planning, sharding, partitioning, caching, back-pressure, tenant isolation, multi-region architectures, large-scale migrations, AI-assisted profiling, technical leadership, executive communication
Preferred skills
None stated
Technologies
None stated
Responsibilities
Define scale readiness targets and align teams on service-level objectives; identify and remove major bottlenecks using production data and profiling; design and implement architectural changes for sharding, partitioning, and multi-region readiness; create reusable benchmarks and test environments; lead scalability reviews and release gates; turn incidents into lasting improvements; apply AI tools for investigation and anomaly detection.
Seniority
Senior, hands-on IC
