Sr Software Engineer, Billing - LATAM

Engine is transforming business travel into a personalized and simple experience. They are seeking a Senior Software Engineer to drive the design and implementation of a new billing service, collaborating with various teams and utilizing AI tools.

Responsibilities:

• Drive the design and implementation of a greenfield billing service, replacing legacy code with modern microservices, strong test coverage, and production-grade observability
• Enable other product teams by building and maintaining billing infrastructure they depend on
• Triage and resolve billing support tickets, including escalation to the payments team when needed
• Collaborate closely with the Accounts Receivable team to translate accounting requirements into engineering solutions
• Use AI tools (Claude and/or Cursor) as your primary development environment

Requirements:

• Strong system design skills — you can walk through architectural decisions you've made, explain tradeoffs, and think at the infrastructure level
• Excellent communication — you can explain technical problems clearly to non-technical stakeholders like accountants and business ops teams
• AI fluency — you're comfortable using Claude, Cursor, or similar tools as your main coding interface; you don't just use them occasionally
• Proven delivery — you've shipped complex systems, not just features; you can speak to the weight and scope of what you've built
• Experience in FinTech, payments, fraud, or billing systems — adjacent domains like fraud prevention or payment logistics count
• Java or Kotlin background (most of our services are Java/Kotlin; not a hard requirement with AI in the loop)
• Terraform, Datadog, or Splunk experience