About Kosta Kefalos | Contra Kosta Kefalos

Kosta Kefalos

Kosta Kefalos

Owner at Nivio Optimize

Nivio Optimize

Atlanta, USA

Atlanta, USA

Meet Kosta

Route Optimizer

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Owner at Nivio Optimize

https://nivio-optimize.com/

Atlanta, USA

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Contra Pro Manage freelance projects Get verified as an expert Find jobs Get discovered Sign contracts Send invoices Commission-free payments

For companies

For companies Manage team projects Share hiring workspace Post jobs Discover contractors Sign contracts Approve invoices Global payments & tax compliance

Use Cases

For companies For freelancers For creator tools For agencies For VCs

Resources

Partner networks Advertising Hackathons Creative Human Data Human Creativity Benchmark Human in the loop API Project-based hiring calculator Guide to flexible hiring Guide for agencies Creator tools awards Customer stories Blog FAQs for freelancers FAQs for companies Referrals

Hire Freelancers

Explore all Top independents Design Engineering Marketing Music & audio Social media Video & animation Product Business consulting & HR Other

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