Numtide helped teach us how to profile kernel locking issues, which none of us had any deep experience with. We'd be happy to use them again, no matter how low- or high-level the issue.
After 2 weeks they set up a scalable & future proof infrastructure that is easy to maintain and develop. At the same time they setup a CI/CD workflow that has allowed all our developers to focus on what they do best: write code. The people at Numtide are very humble and honest - the ideal support for a startup.
Numtide helped Scarf upgrade its live production infrastructure from a quickly hacked together deployment to a globally-available system that is well architected, built with state-of-the-art technology, and can scale with us long term.