Hakan Sevimoğlu Hakan SevimoğluFreelance Developer · 18 yrs
Custom web apps & SaaS

Web Application Development: Scalable Web Apps Built for Your Business

Where off-the-shelf packages fall short, I build web software and SaaS platforms that fit your workflow exactly.

Quick answerWeb application development is the design and coding of custom browser-based applications such as admin panels, SaaS products, portals and e-commerce. Hakan Sevimoğlu builds multi-tenant SaaS, B2B portals and enterprise dashboards with PHP/Laravel, CodeIgniter and React.

Written by Hakan Sevimoğlu · Last updated:

Security and performance as standard

Every project ships by default with prepared SQL statements (PDO), CSRF and XSS protection, role-based access control and regular backups. Pages are optimized against Core Web Vitals targets.

A multi-tenant SaaS architecture makes it possible to build products that serve many companies from a single codebase.

What I offer

  • SaaS platforms

    Multi-tenant, subscription-based web products.

  • B2B portals

    Dealer, order and price list management.

  • Admin panels

    Role-based permissions, reporting and exports.

  • Security

    PDO, CSRF/XSS protection, logging.

  • PWA

    Web apps that work like native apps on mobile devices.

  • SEO-friendly foundation

    Structured data, speed and clean URL structure.

Technologies I use

PHP 8LaravelCodeIgniterPDOMySQLReactJavaScriptPWAREST APIRedis

Official documentation and resources

Standards and official documentation I follow in projects:

Example projects

A selection of live projects serving real users.

How we work

  1. Free intro call

    We clarify needs, existing systems and goals together.

  2. Quote & roadmap

    Scope, technology, timeline and budget within 24 hours.

  3. Staged development

    Weekly demos and a live test environment.

  4. Launch & support

    Go-live, training and ongoing maintenance.

Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.

Staged delivery and approvalYou review each module on a test environment before we move on.

Written scope and rightsScope, delivery and source code rights are defined in the contract.

Frequently asked questions

Off-the-shelf or custom software?

A ready-made package is enough for standard processes; if your workflow is different or you need integrations, custom web software is more economical in the long run.

What server does the web application run on?

It is configured to run on cPanel shared hosting, a VPS or cloud servers.

Can you add modules to my existing system?

Yes; the existing code and database are reviewed and a module compatible with the architecture is developed.

How does post-delivery maintenance work?

Maintenance support is provided for security updates, backup checks and new features.

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