Simulation Details

LaunchDarkly is a leader in the software delivery industry, empowering developers to deploy new features quickly while maintaining system stability. Serving over 4,000 enterprise clients, including 15% of Fortune 500 companies, the platform manages more than 20 million feature flags daily. This ensures seamless software releases and personalized customer experiences.

The Billing and Internal Systems team plays a pivotal role in LaunchDarkly’s $200M annual recurring revenue (ARR). They design and maintain systems for pricing models, account management, and usage-based billing. Recently, the team transitioned to a usage-based billing model capable of processing over 1 billion usage events monthly. This required close collaboration with Finance, Product, and Revenue teams to ensure compliance, scalability, and alignment with customer needs. The team adheres to engineering best practices, such as automated testing and code reviews, to deliver reliable and innovative solutions.

In this simulation, you take on the role of a Fullstack Engineer on LaunchDarkly’s Billing and Internal Systems team. Your task is to resolve critical bugs in the billingservice.py module, which have caused financial discrepancies affecting major enterprise clients. These bugs include a hard-coded usage threshold, incorrect rounding logic, and a date calculation error.

You will work collaboratively to debug and edit the Python code, ensuring accurate billing calculations. Alongside the technical fixes, you must communicate tailored updates to two key stakeholders: Alex Chen, the Engineering Manager, and Sarah Martinez, the Senior Finance Analyst. Alex will need clear explanations of the technical issues and a realistic resolution timeline, while Sarah will require insights into the financial impact and compliance implications.

Your ability to balance technical precision with effective communication will be critical to restoring trust with enterprise clients and mitigating further revenue leakage.

– Debug and fix the billingservice.py module to address the identified bugs.
– Engage in one-on-one conversations with Alex Chen to provide technical updates and timelines.
– Communicate with Sarah Martinez to clarify the financial impact and compliance restoration.
– Ensure your technical solutions align with business priorities and stakeholder expectations.

Team

Who you will work with in this Simulation
Your team is 100% generated by AI – you will not interact with real people and no human will read your conversation.

Taylor Brown
Fullstack Engineer, Billing Systems

Alex Chen
Engineering Manager, Billing and Internal Systems

Sarah Martinez
Senior Finance Analyst

Organization

A leading feature management platform empowering teams to manage feature flags effectively, optimize software releases, and deliver tailored experiences.