Devin

Overview

Devin is an AI coding agent and software engineer that helps developers build better software faster. It operates through parallel cloud agents that serious engineering teams use to automate complex software engineering tasks.

Devin handles large-scale code migrations, refactoring, and other repetitive engineering work that would otherwise consume thousands of developer hours. The product replaces manual, multi-year efforts with autonomous agent-driven execution that teams manage through a human-in-the-loop workflow.

Key Benefits

• Nubank achieved a 12x efficiency improvement in engineering hours saved during a multi-million line ETL migration
• Over 20x cost savings on large-scale refactoring projects compared to manual engineering effort
• Task completion scores doubled after fine-tuning Devin on migration examples
• Task speed improved 4x — roughly 40 minutes per sub-task dropped to 10 minutes
• Migrations that required over 1,000 engineers for 18 months were completed in weeks instead of months or years
• Devin autonomously built its own tools and scripts to handle mechanical components of migrations

How It Works

Teams invest a small fixed cost to teach Devin how to approach specific sub-tasks by providing examples of previous manual work. Devin then autonomously completes the migration, with a human staying in the loop only to manage the project and approve changes. Devin also builds its own classical tools and scripts for the most common mechanical components of the work, accelerating its own performance over time.

Use Cases

• Engineering teams at large financial institutions migrating monolithic ETL repositories of over 6 million lines of code into flexible sub-modules
• Platform engineering teams distributing repetitive refactoring work across autonomous agents rather than thousands of engineers
• Data engineering organizations transforming centralized FinServ architectures to support continued geographic and product expansion
• Engineering leaders at high-growth companies who need to modernize legacy codebases without diverting teams from core product work
• Enterprise engineering organizations managing company-wide codebase migrations that involve hundreds of thousands of discrete, repetitive changes

Why Choose This Product

Devin is best suited for engineering teams facing large-scale, repetitive software engineering tasks such as code migrations and refactoring. The product requires an upfront investment to teach Devin the task approach before it can run autonomously, making it most effective for projects with sufficient volume to justify the setup cost.