✦ Luna Orbit — Software Engineering

Software Engineer II - Integrations

at Klaviyo

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

Type Full-Time
Experience mid
Exp. Years 4+ years
Education Bachelor's degree or equivalent
Category Software Engineering

About this role

This role involves developing and maintaining scalable integrations for Klaviyo, focusing on APIs, data pipelines, and web architecture to support SaaS products.

Key Responsibilities

  • Build integrations
  • Maintain data pipelines
  • Collaborate with teams
  • Ensure system scalability
  • Support third-party APIs

Technical Overview

The environment includes building APIs, data pipelines, and web architecture for scalable SaaS solutions, with a focus on third-party integrations.

Ideal Candidate

The ideal candidate is a mid-level software engineer with 4+ years of experience in building scalable, full-stack SaaS products, with strong API development and web architecture skills.

Must-Have Skills

creating and maintaining highly availablefull-stack SaaS productsexperience with 3rd party APIsweb architecture design patternsscalable systems

Nice-to-Have Skills

data mappingdata transformationpipelinesAPI development

Tools & Platforms

Klaviyo APIsREST APIsAPI pipelines

Required Skills

APIs3rd party APIsauthenticationstoragedata pipelinesweb architecturescalable systemsfull-stack SaaS

Hard Skills

APIs3rd party APIsauthenticationstoragedata pipelinesweb architecturescalable systemsfull-stack SaaS

Soft Skills

collaborationproblem-solvingexecutionlong-term thinkingcommunication

Industry & Role

Industry SaaS
Job Function Developing scalable API integrations for SaaS platform
Role Subtype Systems Engineer
Tech Domains APIs, Web architecture

Keywords for Your Resume

software engineerAPIs3rd party APIsweb architecturescalable systemsfull-stack SaaSdata pipelinesAPI developmentcollaborationproblem-solvingBostonon-sitefull-timeAPI pipelinesweb architecture design

Deal Breakers

Lack of experience with scalable systems, No API development experience, No web architecture knowledge

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