Senior Full-Stack Engineer (React / PHP-Laravel)

CodeBright is a US-based custom software and AI development agency. They are building a large-scale B2B SaaS platform for event management and are looking for a Senior Full-Stack Engineer to work on backend architecture, billing engines, and third-party API integrations with a modern frontend.

• Build out complex backend architecture, dynamic billing engines, and heavy third-party API integrations
• Connect backend to a modern frontend
• Implement standard accounting principles, building custom financial workflows, dynamic pricing models, and 'waterfall' payment allocation systems
• Work with and integrate backend APIs into frontend code that was partially generated by AI tools

• 5+ years of production experience as a Full-Stack Engineer
• AI-Pragmatism: comfortable working with and integrating backend APIs into frontend code that was partially generated by AI tools
• Deep expertise in relational databases and building secure, scalable backend architecture
• Experience building time-based automated billing systems or financial workflows
• Comfortable using AI coding assistants (Cursor, etc.)
• Language: near native English fluency or ability to speak Russian
• Timezone: ability to overlap a minimum of 4 hours with New York (EST)
• Deep experience required with payment gateways (Stripe Connect/Payouts)

• Long-term, full-time stability
• Direct collaboration with the technical founder
• No micromanagement—just clear technical requirements and the autonomy to build them right
• Exposure to modern AI-driven development workflows