I'm Hilmi Hidayat, an independent Full-Stack Software Engineer based in Surabaya, Indonesia. I build and launch production SaaS products and custom web applications for founders, businesses, and international clients.

I work across the full product lifecycle, from product requirements and technical architecture to frontend and backend development, PostgreSQL, authentication, payment integrations, third-party APIs, deployment, and post-launch support.

Available for selected freelance SaaS and full-stack development projects.
Portfolio and case studies: hilmih.com

• SaaS MVPs and production web applications
• Multi-role business platforms and internal systems
• Marketplaces, booking systems, client portals, and dashboards
• Subscription and payment integrations with Stripe and other providers
• REST APIs and third-party service integrations
• Workflow automation and internal tools
• Existing product improvements, debugging, and production support

• Frontend: Next.js, React, TypeScript, Tailwind CSS
• Backend: Laravel, PHP, Node.js
• Database: PostgreSQL, MySQL, Supabase, Redis
• Payments: Stripe and other payment providers
• Infrastructure: Docker, DigitalOcean, Cloudflare, Vercel

I often work as the primary developer responsible for taking a product from requirements to production, including:

• Product architecture and technical planning
• Database design and backend APIs
• Authentication, authorization, and role-based access
• Subscription and payment workflows
• Third-party API integrations
• Deployment and production environments
• Debugging, performance optimization, and ongoing support

• Full-stack SaaS product development
• SaaS MVP architecture
• PostgreSQL-backed applications
• Payment and subscription integrations
• API and webhook integrations
• Authentication and authorization
• Production deployment and maintenance
• Performance optimization and debugging

I also build and maintain open-source projects related to web development, payments, forms, application security, and developer tooling.

Some examples:

• form-builder - Lightweight drag-and-drop JavaScript form builder
• stripe-donation - Laravel donation page with Stripe payments
• content-guard - Content moderation library for Indonesian applications
• okewa - Lightweight PHP tool for generating WhatsApp links

Hilmi Hidayat, also known as Hilmi H., is an independent full-stack software engineer who builds SaaS products and custom web applications from architecture through production.

My main stack includes Next.js, React, TypeScript, Laravel, PHP, Node.js, PostgreSQL, Supabase, Stripe, Docker, DigitalOcean, Cloudflare, and Vercel.

Yes. I can handle frontend and backend development, database architecture, authentication, subscription payments, third-party integrations, deployment, and post-launch technical support.

Yes. I'm based in Surabaya, Indonesia and work remotely with clients across different countries and time zones.

Yes. I'm open to selected SaaS, full-stack development, payment integration, and long-term product development projects.

• Building and supporting SaaS and web products
• Publishing client case studies and product work at hilmih.com
• Building open-source developer tools
• Exploring AI-assisted software development and automation
• Open to selected freelance and long-term remote opportunities

Portfolio: hilmih.com
Work with me: hilmih.com/contact