LinkedIn mostly, you can use the free version, but it's easier if you use Recruiter for much more precise filtering, and/or set up a job post. You could try lo

LinkedIn mostly, you can use the free version, but it's easier if you use Recruiter for much more precise filtering, and/or set up a job post. You could try looking for related projects in GitHub if that makes sense for your project. Or going to local meetups. But it can be hard to find people that are open to switching jobs unless you have a very attractive offer. It's more efficient to explicitly target people looking for a job: again mostly through LinkedIn. There's plenty of recruiting firms out there that can help if you have the budget, and some SaaS-like databases of pre-filtered candidates, often for remote work, depends on the region. At the end of the day, recruiting is not much different from sales. You need a proper pipeline of leads and interview many people so you have real options to choose from. It's a numbers game, there is no real substitute for a proper multi-stage interview process. You can get recommendations from your network, but it's not very scalable or objective.