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Senior Software Engineer - Growth

Boston💼 Full-time💰 $148,000–$148,000🗓 2026-05-04 → 2026-09-27

Core

Drive technical design and implementation of high-impact user-experience improvements for new customer onboarding and activation at Klaviyo.

Role type

Senior Software Engineer (Growth/Onboarding)

Builds

Customer onboarding pipeline, user experience features, and experimentation infrastructure for new customer success.

Domain

SaaS / Marketing Automation / Customer Growth

Deliverable

product features

Required skills

Full stack software engineering, technical strategy, A/B testing, AI-driven software delivery, mentoring, architectural design, scalability planning

Preferred skills

Experience with user acquisition, metric-based goal setting, entrepreneurial environment adaptation

Technologies

TypeScript, React, Python, Django, MySQL, Cassandra, RabbitMQ, Redis, AWS, Terraform, Ansible

Responsibilities

Lead end-to-end experimentation process including strategy definition and A/B test implementation; define architectural approach and technical strategy for the area of responsibility; mentor and provide technical guidance to other engineers; collaborate with partners to prioritize technical initiatives; own the entire project lifecycle from ambiguity to delivery.

Seniority

Senior, hands-on IC with mentorship responsibilities

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