✦ Luna Orbit — Software Engineering

Principal Software Engineer, Enterprise Scalability

at Klaviyo

📍 Boston, MA Onsite Posted March 18, 2026
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Position Details

Type Full-Time
Experience senior
Exp. Years 12+ years
Education Not specified
Category Software Engineering

About this role

This role focuses on optimizing SaaS platform performance through advanced engineering techniques, system bottleneck removal, and automation, ensuring scalable and reliable service delivery.

Key Responsibilities

  • Optimize SaaS performance
  • Implement sharding and partitioning
  • Lead multi-region readiness
  • Automate runbooks and anomaly detection
  • Remove system bottlenecks

Technical Overview

The technical environment includes performance engineering, capacity planning, sharding, multi-region deployments, high-volume data migrations, and AI-driven automation tools.

Ideal Candidate

The ideal candidate is a senior software engineer with over 12 years of experience in performance engineering, SaaS scaling, and system optimization. They are proficient in capacity planning, sharding, multi-region readiness, and AI-driven automation to improve system performance and reliability.

Must-Have Skills

12+ years SaaS scaling experienceperformance engineeringcapacity planningshardingmulti-region readinesshigh-volume migrationsAI tools & automationperformance optimizationsystem bottleneck removal

Nice-to-Have Skills

AI-driven anomaly detectionsynthetic traffic generationperformance scorecardsystem bottleneck removalreproducible testbeds

Tools & Platforms

profiling toolssynthetic load generatorsAI anomaly detection tools

Required Skills

performance engineeringcapacity planningshardingpartitioningcachingback-pressuremulti-region readinesshigh-volume migrationsAI toolsanomaly detectionrunbook automationperformance optimization

Hard Skills

performance engineeringcapacity planningshardingpartitioningcachingback-pressuremulti-region readinesshigh-volume migrationsprofilingsynthetic loadanomaly detectionrunbook automation

Soft Skills

analytical thinkingcommunicationproblem-solvingcross-org influencetechnical depth

Industry & Role

Industry SaaS
Job Function Enhance SaaS system performance and scalability
Role Subtype Software Engineer
Tech Domains Performance Engineering, Cloud Platforms, SQL / PostgreSQL, AI & Machine Learning, system automation

Keywords for Your Resume

performance engineeringcapacity planningshardingpartitioningcachingback-pressuremulti-region readinesshigh-volume migrationsAI toolsanomaly detectionsynthetic loadrunbook automationperformance optimizationsystem bottleneckscaling SaaSperformance scorecardreproducible testbedssystem bottlenecksperformance tuning

Deal Breakers

Less than 12 years SaaS experience, No experience with performance engineering, Lack of multi-region readiness expertise, No automation or AI tools experience

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