Senior Engineer, Kajabi

• This role requires strong expertise in Ruby on Rails, React, Postgres, combined with hands-on experience using AI tooling, including agents, to drive smarter workflows and user-facing features
• You’re product- and customer-minded—constantly thinking about how users buy, sell, and manage revenue on Kajabi. With over $1 billion in transactions processed annually through our platform, you understand the impact every interaction has on our creators’ livelihoods and are driven to elevate every touchpoint across the payments experience
• You make pragmatic decisions. You’re not afraid to challenge assumptions, but once aligned, you commit fully to execution and delivery
• You’ve shipped features that impacted key commerce metrics—like conversion, churn, cart value, or failed payment recovery—and have a strong intuition for what drives user trust in financial systems
• You have deep experience working with Stripe’s APIs and can confidently build robust, scalable, and trustworthy commerce experiences
• You balance speed and quality—prioritizing clean architecture, rollback safety, and test coverage in a domain where bugs can have real financial impact
• You use automation, developer tooling, and AI-assisted workflows —like Windsurf, Cursor, Claude Code, and Devin AI— to accelerate delivery without compromising reliability or maintainability
• You’re confident working across the stack—especially in Ruby on Rails, React, and Postgres—and you’re comfortable designing and debugging both backend flows (e.g., subscription billing, tax logic) and customer-facing UIs (e.g., checkout, pricing configuration)
• You thrive in a collaborative, cross-functional environment—partnering with Product, QE, Design, and Support to solve real-world commerce problems. You’re not just shipping code, you’re shaping the economic backbone of the Kajabi platform
• You’re comfortable querying production data to validate assumptions, diagnose issues, or advocate for better instrumentation to ensure financial transparency and traceability
• You’re resilient and curious—especially when faced with unexpected behavior in complex systems like payment gateways or tax engines. You push past ambiguity to find root causes and lasting improvements
• You communicate with clarity and intention—whether you're explaining tradeoffs in API design, mentoring a teammate through a PR, or reviewing the rollback plan for a high-impact release
• You design production-ready solutions from day one—whether it’s safe schema changes, idempotent billing flows, or alerting strategies that respect the sensitivity of financial systems
• You help level up the team—offering thoughtful feedback in design reviews, contributing to internal tooling

Desirable

• Kajabi is hiring a Senior Software Engineer to join our Commerce team and help shape the future of payments, checkout, subscriptions, and monetization at Kajabi
• You’ll work at the intersection of product reliability, financial compliance, and user experience — building scalable systems that power the business side of our creator ecosystem
• Design, build, and maintain scalable backend systems and APIs using Ruby on Rails to power core commerce functionality (checkout flows, invoicing, subscription billing, tax compliance, etc.)
• Develop rich, dynamic user interfaces in React that make complex payment processes feel intuitive and delightful
• Integrate AI tooling and agents to streamline product, operational, and development workflows
• Collaborate cross-functionally with Product, Design, and Data to align on user experience and performance goals
• Lead system design conversations, participate in architecture reviews, and contribute to long-term platform direction
• Write clean, testable, maintainable code and provide thoughtful peer reviews
• Support the reliability and security of payment systems — including PCI compliance and fraud mitigation practices
• Champion robust monitoring and observability practices with Datadog
• Provide technical leadership and ownership delivering amazing features to our Heroes