Kurly Improves Code Quality and Development Efficiency by Adopting 4-Person Mob Programming

Kurly's development team introduced mob programming for a new coupon project, improving code quality and development efficiency. This is a method where 1 driver and multiple programmers work on a single PC, an expanded form of 1:n pair programming in which the entire agile team participates.

Operation Method and Adaptation Process

Initially, they operated on a cycle of 25 minutes of coding followed by 5 minutes of rest, but due to high energy consumption, they also incorporated a 30-minute walking break at 4 PM. After a 2-week adaptation period, they adjusted to a 40-minute coding, 10-minute rest cycle to increase concentration. Developers each brought their own keyboards and connected them to a single MacBook to work, using so many devices that a power shortage warning occurred.

Results and Effects

Real-time code reviews and design pattern suggestions happened immediately, allowing the code to be refined quickly. This code was operated issue-free for 3 months in the live environment, proving its high stability. Although high energy consumption and initial pressure acted as drawbacks, bugs were reduced and team members experienced technical growth, ultimately proving efficient in terms of development schedule and quality.