Senior Backend Engineer - Billing Platform Modernization

LaunchDarkly Group; Northern (KY); Hybrid; USD 163,000 - 224,000; Full time

Benefits offered by this job

RSUs

Health insurance

Vision insurance

Dental insurance

Mental health benefits

Job summary

LaunchDarkly is seeking a Senior Backend Engineer to join the Billing team. You will own APIs and services that turn plans, pricing, entitlements, and usage into revenue, including billing, subscriptions, metering, and integrations with finance systems.

You will help decompose the billing monolith into scalable, testable services, ensure end-to-end correctness, and take ownership from on-call to incident response. Proficiency in Go, Rust or Python and AWS is preferred.

Qualifications

• 6+ years of professional software-engineering experience, with significant work on complex backend applications.
• Experience decomposing a monolith.
• A track record on systems where correctness is non-negotiable, with idempotency, reconciliation, reversible migrations, safe cutovers.
• Proficiency in at least one backend language (Go, Rust, Python, etc.) and familiarity with cloud infrastructure (AWS or equivalent), plus strong production ownership including on-call.

Responsibilities

• Design and build the systems that define our plans, pricing, entitlements, and limits, and expose them through our API.
• Decompose billing from our monolith into services that are correct, testable, and independently deployable.
• Own correctness end to end — usage metering, reconciliation, and the invoices and usage data customers see.
• Operate what you build: SLOs, alerting, on-call, and fixing root causes rather than repeating mitigations.

Skills

Go

Rust

Python

Monolith decomposition

On-call ownership

Job description

LaunchDarkly is seeking a Senior Backend Engineer to join the Billing team. You will own APIs and services that turn plans, pricing, entitlements, and usage into revenue, including billing, subscriptions, metering, and integrations with finance systems.

You will help decompose the billing monolith into scalable, testable services, ensure end-to-end correctness, and take ownership from on-call to incident response. Proficiency in Go, Rust or Python and AWS is preferred.