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I will software developer full stack web developer for saas web application
Casey S
5.0
5.0
About this gig
Is your web application stuck between an idea, an unfinished build, or code that does not work the way you need?
I help startups, businesses and founders build, fix and improve web applications. As a full stack developer and software developer, I can handle both frontend and backend work, from responsive pages to databases, APIs, login systems and SaaS features.
What l Offer
- Full stack web development
- SaaS web application development
- PHP Laravel development
- API integration and backend development
- Bug fixing and responsive frontend development
I will first review your requirements, existing code or design so the work is clear before development starts. Your web application will be built around the features you actually need, with organized source code, responsive pages and the required database or API connections. I can also work with PHP Laravel, Node.js, Next.js and selected AI or low code tools when they fit the project.
Send me your project idea, required features, preferred technology, existing files or website link, and budget. I will review the scope and tell you the right way to proceed.
Get to know Casey S
Casey S
Full Stack Web and Mobile App Developer
- FromUnited States
- Member sinceJul 2026
- Avg. response time1 hour
- Last delivery3 weeks
Languages
English, Spanish, French, German, Italian, Arabic
I am a full stack developer building web and mobile apps for startups and business owners. I work mainly in React, Flutter, and Python, taking projects from a rough idea through to something people can actually use. Clients usually come to me needing an MVP built fast or an existing app fixed and stabilized. I write code I am willing to hand off to another developer later, and I tell clients early if a timeline or scope isn't realistic. Past work onboarding flows, payment integration, cleaning up slow database queries.
My Portfolio
FAQ
What type of web applications can you build?
I can build a custom web application, SaaS platform, business portal, dashboard, admin panel and other systems as a full stack developer using frontend, backend, database and API development.
Can you develop a complete SaaS web application?
Yes. I can handle SaaS web application development from frontend and backend to database setup, user login, admin panels, API integration, payments and other required SaaS features.
Do you work with PHP Laravel development?
Yes. I provide PHP Laravel development for custom web applications, backend systems, REST APIs, database connections, authentication, bug fixing and existing Laravel projects
Can you fix bugs in an existing web application?
Yes. As a software developer, I can review existing code, troubleshoot errors, fix frontend or backend bugs, repair API issues and improve features in your current web application.
Which technologies do you use for full stack development?
I work with PHP Laravel, Node.js, Next.js, Angular, AngularJS, Bootstrap, jQuery and NestJS, plus MySQL, MongoDB and PostgreSQL for full stack web application development.
Can you integrate APIs, databases and login systems?
Yes. I can add REST API integration, database connections, authentication, login systems and backend functionality to a SaaS or custom web application as part of full stack development.
Can you work with AI and low-code development tools?
Yes. When suitable for the project, I can work with Lovable, Bolt.new, Firebase Studio, Cursor, Replit, Bubble, FlutterFlow, Retool and other AI or low-code tools alongside custom software development.
Reviews
4 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J john9lewis
Germany
I highly recommend working with him
$50
Price
8 days
Duration
Helpful?J john9lewis
Germany
After fixing the logout issue, Casey went through the rest of the authentication flow to make sure nothing else is missed. Every thing now works as it should and feel much more confident about the app
$50
Price
6 days
Duration
C 
Seller's Response
Helpful?J john9lewis
Germany
Casey was to fix a supabase authentication issue that was causing users to be logged out unexpectedly. he found and fixed the problem quickly and users now stay logged in even after refereshing the app. Thank you for the great work
$50
Price
5 days
Duration
C Seller's Response
Helpful?
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J john9lewis
Germany
I highly recommend working with him
$50
Price
8 days
Duration
Helpful?J john9lewis
Germany
After fixing the logout issue, Casey went through the rest of the authentication flow to make sure nothing else is missed. Every thing now works as it should and feel much more confident about the app
$50
Price
6 days
Duration
C Seller's Response
Helpful?J john9lewis
Germany
Casey was to fix a supabase authentication issue that was causing users to be logged out unexpectedly. he found and fixed the problem quickly and users now stay logged in even after refereshing the app. Thank you for the great work
$50
Price
5 days
Duration
C Seller's Response
Helpful?
