Senior Software Engineer - Channel Rendering

Klaviyo • Boston, MA

78d • $152,000 - $228,000

About The Position

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit careers.klaviyo.com to see how we empower creators to own their own destiny. The Channel Rendering and Engagement (CRE) team is responsible for the high-performance systems that power the rendering, delivery, and engagement tracking of communications across all channels at Klaviyo—including email, SMS, push, and more. We build and maintain the core infrastructure that ensures every message is generated, delivered, and tracked reliably, at scale, and in compliance with industry standards. This role will contribute to architecture and implementation of complex distributed backend services, ensuring high throughput and low latency. Success in this role relies on both technical excellence and the ability to work across teams and roles.

Requirements

• Senior-level backend engineer with strong systems design skills
• Proficient in Go (required), experience with Python is a plus
• Experienced working with high-throughput distributed systems
• Familiar with message queues (e.g., Pulsar, Kafka, RabbitMQ, SQS)
• Comfortable working independently on projects from design through production
• Able to thrive in a mostly remote team and deliver in a high-autonomy environment

Responsibilities

• Own and drive key components of the email pipeline architecture
• Design and implement scalable, high-throughput services in Go
• Develop systems that manage message queues and email delivery
• Help ensure our systems scale with customer growth, especially as we bring on larger enterprise accounts
• Collaborate cross-functionally to ensure the highest standards of performance, reliability, and deliverability

Benefits

• Participation in the company's annual cash bonus plan
• Variable compensation (OTE) for sales and customer success roles
• Equity
• Sign-on payments
• Comprehensive range of health, welfare, and wellbeing benefits based on eligibility

What This Job Offers

• Career Level: Senior
• Industry: Publishing Industries