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Software Engineer II – Integrations Velocity – Fullstack – Frontend lean
| Company | Klaviyo |
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| Location | Boston, MA, USA |
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| Salary | $120000 – $180000 |
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| Type | Full-Time |
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| Degrees | |
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| Experience Level | Mid Level |
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Requirements
- 4+ years of experience in a software engineering role with a strong focus on frontend development
- Strong proficiency in React 16+, Javascript/Typescript, HTML, and CSS
- Strong experience building feature-rich, easy-to-use front-end user experiences for high volume web applications
- Experience writing backend services in Python (or similar languages)
- Familiarity with building full stack applications or working closely across frontend/backend boundaries
- Strong testing, debugging, and documentation practices
- Interest in building tools that empower other developers
Responsibilities
- Build React applications and components that improve the integration development experience (debugging tools, visual monitoring, etc.)
- Collaborate on IGF’s Python-based backend, contributing to core ETL workflows and developer APIs
- Help define the user experience for internal and external developers working with integrations
- Own your projects end-to-end, writing well-tested, maintainable code and participating in technical design
- Partner closely with Product, Design, and other engineers to ship impactful features that scale
Preferred Qualifications
- Experience with ETL systems or integration frameworks
- Background in building internal platforms or developer tooling
- Experience in cloud-native environments (especially AWS)
- Exposure to data syncing, APIs, or workflow automation
