A React Native move split into 6 parts
Jared Zoneraich had Devin split a move from React Native to Swift into 6 parts and run the parts in parallel. Each Devin has its own machine. He tells it to ask about ambiguities before it works.
Done with Valgfri agentModerate
What was done
On 19 June 2026 Jared Zoneraich writes that at Cognition he has watched how the engineers use Devin. He himself has moved an app from React Native to Swift. Devin split the work into 6 parts. New Devins took the parts in parallel. Each Devin has its own virtual machine. Before it works, he tells it to ask about what is unclear. He writes that the model team has started 100 Devins on eval logs. The product team has used 5 child agents on 5 different implementations of the same thing. The profile says NYC/DC.
How it went
The move was split into 6 parts and run in parallel. The post does not say the result was merged to a production branch.
Worth knowing
The post does not say the 6 parts were merged. It does not say how many bugs were found.
How to do it
- Ask the agent to ask about ambiguities before it splits the work.
- Let the parts be independent, and read what each part delivered.
- Do not merge and do not publish until you say yes.
Try it with Valgfri agent
In [repo], split the move from [old] to [new] into independent parts. Ask me about anything unclear before you write code. Do not merge and do not publish until I say yes.
Replace text in brackets with your own.
Done when. You have read the parts, and nothing was merged before you said yes.
Safety rule. No merge and no publishing until you have said yes.
Read the original
Read the original · @imjaredz on X ·