Senior Full Stack Developer (React, Next.js, Node.js, PostgreSQL, Firebase & AI)

We’re looking for a highly skilled Senior Full Stack Developer to join our team on a long-term basis. We build modern SaaS platforms, AI-powered applications, internal business tools, and custom software for startups and enterprises. We’re not looking for someone who simply follows tasks—we’re looking for an engineer who can think through technical challenges, propose scalable solutions, and leverage AI to accelerate development while maintaining high code quality. You’ll work on greenfield products as well as existing applications, collaborating with our team to architect, build, and ship production-ready software. What You’ll Be Working On Projects may include: • AI-powered SaaS platforms • Business automation systems • CRM and ERP solutions • Internal management portals • Marketplace platforms • Real-time dashboards • AI chat applications • AI Agents and workflow automation • API integrations with third-party services • Chrome Extensions and productivity tools Required Technical Skills • React.js • Next.js • Node.js • TypeScript • PostgreSQL • Firebase (Authentication, Firestore, Storage, Cloud Functions) • REST APIs • Git & GitHub • Modern frontend development (Tailwind CSS preferred) AI Experience (Required) You should have practical experience building AI-powered applications, not just experimenting with ChatGPT. Experience with one or more of the following is highly preferred: • OpenAI, Anthropic, Gemini, Grok, or other LLM APIs • AI chat interfaces • Prompt engineering • Function Calling / Tool Calling • RAG (Retrieval-Augmented Generation) • AI Agents • Structured output generation • AI workflow automation • MCP integrations (a plus) We’re also looking for developers who actively use AI development tools such as Cursor, Claude Code, GitHub Copilot, Windsurf, or similar to improve productivity. What We’re Looking For • 5+ years of experience building production web applications • Strong frontend and backend architecture skills • Ability to build scalable and maintainable applications • Experience designing relational database schemas • Strong debugging and problem-solving abilities • Clean, readable, and well-documented code • Ability to work independently with minimal supervision • Excellent communication skills Nice to Have • NestJS • Docker • Redis • WebSockets • Vercel • Firebase Hosting • Stripe or payment gateway integrations • AWS, GCP, or Azure • CI/CD pipelines • Experience building SaaS products To Apply Please include the following in your proposal: 1. A brief introduction about yourself. 2. Links to your GitHub, portfolio, or live projects. 3. Describe one complex full-stack application you’ve built. 4. Describe one AI-powered feature or application you’ve developed. 5. Which AI models and APIs have you worked with? 6. Which AI coding tools do you use daily? 7. Your availability (hours/week). 8. Your hourly rate. We’re looking for someone interested in building a long-term relationship. If you’re passionate about modern web development, AI, and building high-quality products, we’d love to hear from you.