LogicLike - Improve logical thinking through engaging brain games
LinkedIn Developers - Discover career paths and land a job
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
LinkedIn - LinkedIn is a business-oriented social networking service, mainly used for professional networking.
JobFlare - Brain games for job seekers
indeed - Find jobs using Indeed, the most comprehensive search engine for jobs.