Corecircle
Scaled to 200K+ users; acquired in 2024
The founder said 200K users in her June 2022 interview. Source
Screenshots
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“A few months back, we were having major problems with the code that was implemented by our first back-end developer. … Anton helped us out and solved all of the problems we had.”
What I built
Fitness-focused social network with exercise tracking features and ML for recommendation system.
Client reviews
Nastassia Ponomarenko (opens in a new tab) reviewed on Upwork (opens in a new tab)
I've been working with Anton for over a year now and as always he does a fantastic job. A few months back, we were having major problems with the code that was implemented by our first back-end developer. Users were seeing empty home feeds, they got logged out and couldn't get logged back in and a few other nightmares.
Anton helped us out and solved all of the problems we had. He also optimized many places of the app so that it could function smoother and faster.
Whoever hires Anton is lucky, I'll tell you that! Thanks so much for all of your help and hope we can work again in the near future. :)
More work
Five-day refund
If in the first five days you feel this is not working, tell me and I refund what you paid.
A small first milestone
We start with one or two weeks of work. If either of us wants to stop at the end of it, we stop — you keep everything built so far.