Interfere raises $5.1M seed to help teams decode software bugs
What's the deal? InterfereDealroom has a profile for this one. Try Dealroom → has raised a $5.1 million seed round led by Hummingbird, with participation from WorldbuildDealroom has a profile for this one. Try Dealroom →, Designer FundDealroom has a profile for this one. Try Dealroom →, Y Combinator, and Vercel. The startup, founded by design engineer Luke Shiels, is building software that helps teams understand what is going wrong in their products, who it affects, and how to fix it.
What's the endgame? Interfere organises monitoring around problems and the people affected by them, rather than raw error logs. The aim is for product managers, designers, and engineers to draw what they each need from the same evidence — a PM checking affected customers and revenue, a designer tracing where the experience broke, an engineer investigating the technical cause.
Why now? Shiels argues AI has changed who ships code. "Designers and PMs are shipping code themselves, and engineers can hand off work that used to take days," he wrote.
The catch: more merged code does not mean better products. Shiels wants teams to spend the time AI saves on understanding whether what they built actually helped users — then deciding whether to fix, simplify, or remove a feature.
What's the product? Interfere grew from a frustration Shiels hit as a design engineer: good tools collected information, but making sense of it still took real work. He wanted a tool he could trust like a teammate — one that returns with an answer or asks for help. The company also plans to broaden what counts as a problem, flagging flows that work as specified but still leave users stuck.
The signal: At $5.1 million, the round sits in the top fifth of comparable seed deals, a notable vote of confidence for an early developer-tools startup. Backing from Y Combinator, Vercel, and Hummingbird points to continued investor appetite for observability products reshaped by the shift toward AI-assisted software development.
Read more: interfere.com
Image credit: Interfere
