Senior Software Engineer

We're looking for a Senior Software Engineer to join our team at Klaviyo. The ideal candidate will have 5+ years of experience in building and operating mission-critical backend services and systems in a production environment. Experience in backend and distributed systems at scale, proficient in Python, and comfortable with cloud-native architectures and container orchestration is required.

Requirements

• 5+ years of software engineering experience
• Experience building and operating mission-critical backend services and systems in a production environment
• Experience in backend and distributed systems at scale
• Proficient in Python and open to working in other languages
• Comfortable with cloud-native architectures (AWS preferred) and container orchestration (e.g., Kubernetes)
• Experience in data-driven decision making and A/B testing
• Comfortable designing and querying data models in relational, analytical, and NoSQL datastores
• Modern DevOps practices (CI/CD, monitoring, alerting)
• Track record of owning multi-component projects end-to-end
• Excellent technical collaborator and communicator
• Self-starter with a passion for AI and experimentation
• Nice to have: previous experience working on product recommendation systems, experience with big data frameworks, experience in AI/ML systems and products

Benefits

• Generous Paid Time Off
• 401k Matching
• Retirement Plan
• Tuition Reimbursement
• Relocation Assistance