✦ Luna Orbit — Software Engineering

Software Engineer II - Flows Platform

at Klaviyo

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

Type Full-Time
Experience mid
Exp. Years 3+ years
Education Not specified
Category Software Engineering

About this role

Klaviyo is seeking a Software Engineer II to develop and maintain high-scale backend systems that power automated lifecycle programs. The role involves building reliable, efficient, and scalable backend solutions in a SaaS environment.

Key Responsibilities

  • Build and operate core backend engine
  • Develop high-scale event processing systems
  • Ensure system reliability and performance
  • Collaborate on technology decisions
  • Contribute to infrastructure re-architecture

Technical Overview

The role involves working with Python, Django, distributed systems, event-driven architecture, and cloud infrastructure to build high-performance backend services for SaaS automation platforms.

Ideal Candidate

The ideal candidate is a mid-level software engineer with 3+ years of experience in backend development, proficient in Python and Django, with a strong understanding of distributed systems and high-scale data processing. They should be capable of building reliable, high-performance backend solutions for SaaS platforms.

Must-Have Skills

3+ years of experience in a software engineering roleBackend proficiencyPythonDjangoDistributed Systems knowledge

Nice-to-Have Skills

High-scale infrastructureEvent processingMessaging systemsPerformance optimization

Tools & Platforms

PythonDjangoAWSEvent-driven architecture

Required Skills

PythonDjangodistributed systemsAPIsevent-driven architecturehigh-scale infrastructurebackend developmentperformance optimizationreliability engineeringcloud platforms

Hard Skills

PythonDjangoDistributed SystemsHigh-volume data processingBackend developmentAPIsEvent-driven architectureCore backend systems

Soft Skills

Team collaborationProblem-solvingTechnical decision makingCommunicationReliability focus

Industry & Role

Industry SaaS
Job Function Developing and maintaining high-scale backend systems for automation
Role Subtype Backend Engineer
Tech Domains Python, Django, Amazon Web Services

Keywords for Your Resume

software engineerbackend systemspythondjangodistributed systemshigh-scale infrastructureevent-drivenAPIscore backendautomated lifecyclemessaging systemsperformancereliabilitycloud infrastructurehigh-volume data processingbackend developmentevent-driven architectureperformance optimizationreliability engineeringcloud platforms

Deal Breakers

Less than 3 years of experience, Lack of Python or Django experience, No experience with distributed systems, Remote work preference only

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