Senior Software Engineer, Lifecycle & Messaging Platform

What you'll do

• Build and operate messaging infrastructure across email, SMS, push, and in-app, including routing, scheduling, retries, and delivery tracking.
• Implement consent, preference, suppression, audit, and access-control systems, and own deliverability.
• Partner with data and machine-learning engineers on event-triggered engagement, frequency management, holdouts, and experimentation.

What they ask for

• 5+ years of backend software engineering, including ownership of a messaging, notification, or lifecycle platform.
• Operated a platform at millions of messages per month across at least two of email, SMS, and push.
• Designed event-driven systems with idempotency, retry, and deduplication guarantees, and carried on-call responsibility.
• Shipped systems enforcing consent or privacy rules; production experience with a major messaging provider or equivalent; proficiency in at least one of Go, Java, Kotlin, Python, or TypeScript, plus SQL.

Nice to have

• Lifecycle or growth engineering on a large consumer product; integrations with CRMs, call centers, or partner systems.
• Deliverability troubleshooting at scale or experience building experimentation infrastructure.

Pay

$150,000 — $280,000 USD annual base pay

Tools

Twilio, SendGrid, Braze, Iterable, Customer.io, Go, Java, Kotlin

AI focus

Partner with data and machine-learning engineers on event-triggered engagement, including frequency management and holdout design.