Remote Senior Enterprise Scale Architect

Klaviyo; Boston (MA); Remote; USD 244,000 - 366,000; Full time

Job summary

Klaviyo is seeking a senior technical leader to own enterprise scalability, performance, reliability, and multi-region readiness. Reporting to the VP of Engineering, you will lead through hands-on engineering and cross-team influence with no direct reports.

You will drive platform-wide architectural changes, remove major bottlenecks, and ensure readiness for large tenants and workloads, spanning design to production rollout and repeatable patterns for teams to leverage.

Qualifications

• 12+ years of engineering experience with a track record removing bottlenecks and delivering measurable impact.
• Strong expertise in performance engineering, capacity planning, sharding/partitioning, caching, back‑pressure and multi‑region architectures.
• Proven ability to diagnose systems, test hypotheses, ship production code, and roll out changes safely.

Responsibilities

• Define scale readiness with measurable targets and service-level objectives.
• Identify and remove critical bottlenecks using production data and benchmarks.
• Drive architectural changes including sharding, caching, back‑pressure, and multi‑region readiness.
• Create repeatable scale engineering patterns, benchmarks, and test environments.
• Lead scalability reviews and establish release gates to surface risks early.
• Turn incidents into durable improvements through deep dives and fixes.
• Apply AI tools to profiling, workload modeling, anomaly detection, and runbooks.
• Communicate priorities and outcomes to engineers and executives, tying investments to customer impact.

Skills

Multi-tenant SaaS scaling

Performance engineering

Distributed systems

Leadership

AI tooling/applications

Communication to execs

Job description

Klaviyo is seeking a senior technical leader to own enterprise scalability, performance, reliability, and multi-region readiness. Reporting to the VP of Engineering, you will lead through hands-on engineering and cross-team influence with no direct reports.

You will drive platform-wide architectural changes, remove major bottlenecks, and ensure readiness for large tenants and workloads, spanning design to production rollout and repeatable patterns for teams to leverage.