Lead Software Engineer - Billing

KlaviyoBoston, MA
111d$188,000 - $282,000

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 Billing team at Klaviyo is at the heart of how we deliver value to our customers and drive revenue for the business. We’re responsible for everything from pricing and payments to product entitlements. Our systems ensure customers are billed accurately and have access to the features they’ve selected. As Klaviyo expands globally and launches new product offerings, our team plays a pivotal role in enabling speed, flexibility, and scale across the company. As an Lead Software Engineer on this team, you’ll lead a group of engineers focused on building internal platforms that empower teams across Klaviyo to self-serve product packaging, entitlements, and billing logic. You’ll oversee work to build a pricing and packaging platform, and to build scalable infrastructure that supports international growth. This is a hands-on leadership role where you’ll contribute to code, design, and strategy. Your work will directly enable faster product launches, better customer experiences, and improved business outcomes.

Requirements

  • 8+ years of engineering experience with strong backend skills (Python or similar)
  • Comfortable coding and reviewing complex systems — this is a hands-on role
  • Experience with fullstack development (React familiarity is a plus)
  • Proven experience with third-party APIs, especially Stripe or payment systems
  • Skilled in system design and scaling infrastructure using AWS
  • Experience building developer platforms or internal tooling is a strong plus
  • Clear communicator and collaborative team player

Responsibilities

  • Lead a team of engineers building a new internal pricing and billing platform
  • Own Klaviyo’s 3rd party payment and billing integrations and expand payment capabilities
  • Build scalable systems to support international markets and payment flexibility
  • Contribute directly to architecture and code, driving best practices and quality
  • Collaborate with cross-functional teams to unlock product revenue opportunities
  • Grow and mentor engineers while helping shape the future of billing at Klaviyo

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
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