Klaviyo
Principal Engineer, Enterprise Scalability (Remote - East Coast Only)
Boston, MA. Posted 11 days ago
The role
You will own the approach to enterprise scalability, performance, reliability, and multi-region readiness. You will identify bottlenecks, drive architectural changes, and establish readiness measures for large workloads.
What you will do
- Define scale readiness and establish measurable targets for latency, throughput, error rates, and capacity
- Identify and remove bottlenecks using production data, profiling, and benchmarks
- Design and implement sharding, partitioning, caching, back-pressure, and workload isolation strategies
- Advance multi-region readiness and build paths for high-volume data migrations
- Create lightweight benchmarks, profiling harnesses, and test environments
- Lead scalability reviews and establish release gates
- Lead technical deep dives to identify systemic causes of incidents
- Apply AI to improve investigation and response
- Communicate technical priorities and tradeoffs to engineers and executives
Required qualifications
- 12+ years of relevant engineering experience
- Experience scaling multi-tenant SaaS
- Experience with performance engineering, capacity planning, sharding and partitioning, caching, back-pressure, tenant isolation, multi-region architectures, and large-scale migrations
- Ability to investigate unfamiliar systems, test hypotheses, and write production code
- Ability to align teams around shared outcomes and build practical standards
- Ability to explain complex technical decisions to engineering and executive audiences
- Applied experience with AI tools or automation for engineering work
Benefits
- Annual cash bonus plan
- Equity
- Sign-on payments
- Health, welfare, and wellbeing benefits
Before you apply
- Candidates must be located on the East Coast
- Role is not applicable to candidates in MA
- Use of Covey in the hiring process
About the company
Klaviyo helps businesses build stronger relationships with their customers by making first-party data accessible and actionable. They empower creators to own their destiny through their platform.