Principal Software Engineer, Enterprise Scalability

1 hour, 5 minutes ago
Full-time
Lead
Software Development
Klaviyo

Klaviyo

Klaviyo offers intelligent email marketing, SMS, and automation services for ecommerce businesses, empowering brands to personalize customer interactions and drive growth.

IT Services
1K-5K
Founded 2012

Description

  • Define enterprise scalability fitness functions and a scorecard for latency, throughput, and error rates.
  • Align teams to SLOs and budgets for scalability work.
  • Design and implement sharding, partitioning, caching, back-pressure, and multi-region readiness strategies.
  • Develop high-volume migration paths for large-scale systems.
  • Build benchmarks, profiling harnesses, and reproducible testbeds to enable teams to land fixes.
  • Lead scalability reviews, readiness gates, and incident deep dives that drive systemic remediation.
  • Communicate technical tradeoffs and outcomes clearly to executives and engineers.
  • Integrate AI into scale and resiliency efforts, including anomaly detection, synthetic load generation, and guided runbooks.
  • Partner across teams to productionize platform improvements.
  • Lead through technical depth and hands-on impact without direct reports.

Requirements

  • 12+ years of experience scaling multi-tenant SaaS systems.
  • Proven ability to remove major bottlenecks and demonstrate impact with data.
  • Experience with performance engineering and capacity planning.
  • Experience with sharding and partitioning strategies.
  • Experience with caching and back-pressure techniques.
  • Experience with multi-region readiness and high-volume migrations.
  • Experience using AI tools for profiling assistance, workload modeling, synthetic traffic generation, anomaly detection, or runbook copilots, with explicit guardrails and observability.
  • Ability to influence across organizations using fitness functions, scorecards, and readiness gates.
  • Strong communication skills for working with both executives and engineers.
  • AI fluency and curiosity about responsibly improving scale outcomes.
  • Up to 10% travel may be required.

Benefits

  • Base salary range of $244,000 to $366,000 USD for US locations.
  • Participation in the company’s annual cash bonus plan.
  • Equity may be included in the total compensation package.
  • Sign-on payments may be included.
  • Comprehensive health, welfare, and wellbeing benefits, based on eligibility.
  • Flexible travel expectations, with travel coordinated in advance and capped at up to 10%.

Interested in this position?

Apply directly on the company website

Apply Now

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