I will build a custom full stack web application or saas mvp


About this gig
I build custom full-stack web applications and SaaS MVPs around real business workflows: dashboards, internal tools, client portals, admin panels, authentication, databases, CRUD and APIs.
The stack follows your requirements, not a fixed template. Options include Next.js, React, TypeScript, Node.js, Python, FastAPI and relational databases. I focus on clear interfaces, server-side validation, responsive layouts, error handling and careful testing.
Packages have defined limits: Starter covers one small feature; Standard up to 2 CRUD modules; Premium up to 3 connected CRUD modules. Complex payments, marketplaces, advanced roles, real-time systems, migrations and cloud infrastructure need prior review and a custom offer.
Revisions adjust the agreed scope, not unlimited new features or architecture changes. Major additions need an extra or custom offer. Hosting, domains and third-party/API costs are excluded unless agreed. Source code: included in Standard/Premium; separately agreed for Basic.
Message me with your workflow and requirements before ordering. FlowDesk in my portfolio is a personal demonstration, not paid client work.
Get to know Gesael G.
Python Automation Developer, AI Tools and Web Apps
- FromColombia
- Member sinceApr 2022
- Avg. response time1 hour
Languages
Spanish, English
My Portfolio
Other Software Development Services I Offer
FAQ
What do you need before starting?
Share the workflow, users, required features, designs, deadline and target environment. I confirm deliverables and acceptance criteria through Fiverr before substantial development. Missing requirements must be clarified first. Do not send passwords, private API keys or sensitive data.
Which technology stack will you use?
The stack depends on your requirements and existing systems. Options include Next.js, React, TypeScript, Node.js, Python, FastAPI, PostgreSQL, SQLite, Prisma and REST APIs where appropriate. The TypeScript listing metadata does not mean every project must use the same stack.
Can you work with an existing application?
Yes, after reviewing the relevant code, setup instructions and requested changes. You must have permission to share and modify it. I assess compatibility and scope first; major refactoring, migrations or architecture changes may need a custom offer.
Can you build authentication and databases?
Yes. Standard and Premium cover simple login and database-backed CRUD within the listed limits. A CRUD module manages one agreed data entity. Advanced roles, multi-tenant isolation, SSO or complex data models require evaluation and may need a custom offer.
Can you integrate third-party APIs?
Yes, after checking authorized access, documentation, service rules, limits and feasibility. Client-owned accounts, keys and external usage costs are your responsibility unless agreed otherwise. Integrations must be scoped before ordering; never post secrets publicly.
Can you add AI features?
AI features can be evaluated as a scoped integration. Provider access, documentation, data privacy, usage limits and costs must be agreed first. Paid API costs are not included. AI accuracy is not guaranteed; extra functionality may need a custom offer.
Do you provide source code?
Standard and Premium include project source code and setup notes. Basic source-code delivery must be agreed separately; its runnable delivery format is confirmed before ordering. Delivered code excludes passwords, keys, tokens, secrets and private test data.
Is hosting or deployment included?
Hosting, domains, cloud accounts, managed databases and third-party charges are not included automatically. Deployment is separately scoped and quoted. We agree where the app will run and its setup requirements before development; ongoing maintenance is not included.
What if my project is larger than the Premium package?
Message me first for a custom offer. Premium covers up to 6 pages and 3 linked CRUD modules, not any SaaS. Revisions adjust agreed work, not unlimited new features. Major additions, payments, marketplaces, advanced roles, real-time features or architecture changes need separate scope and pricing.
Can you build mobile apps?
This Gig focuses on responsive web applications for desktop, tablet and mobile browsers. Native or cross-platform mobile apps, app-store publishing and mobile-specific integrations are not included and must be evaluated separately.

