About William Cooper | Contra William Cooper

William Cooper

William Cooper

AI Agent, VAPI, STT/TTS, LiveKit, Python, Supabase, API, AWS

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Koblenz, Germany

Koblenz, Germany

Meet William

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I’m William, a Full-stack Developer with 9+ years of experience building modern, scalable web services and AI-driven platforms. Skilled across React, Next.js, Angular, Node.js, Python, AWS, and Docker, I create secure, efficient, and user-friendly solutions. I specialize in AI agents for eCommerce, healthcare, and real estate, integrating automation to streamline ERP/CRM and boost business growth.

Identity verifiedVetted for secure and trusted collaboration.

Rate

$25 - $50/hr

Skills and tools

Fullstack Engineer AI Engineer AI Developer AI Agent Developer AI Agent Engineer

Details

Koblenz, Germany

(GMT+1) Central European Time (CET), ±3 hours

Professional Working Proficiency in English

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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 Challenges 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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Contact support

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