I will develop features for your existing web app or saas


About this gig
Please contact me before ordering so I can review your project and confirm the right package.
Need a new feature added to an existing web app or SaaS product? I can develop, integrate or improve features on both the front end and back end while respecting your current architecture and design.
I can help with:
Pages, components and forms
Filters, search and data tables
REST API endpoints and integrations
Business rules and backend logic
Database changes
Authentication and permissions
Exports, dashboards and internal tools
Responsive frontend improvements
I work with Vue.js, React, Angular, JavaScript, TypeScript, Kotlin, Java, Spring Boot, Hibernate and PostgreSQL.
I am a Lead Developer and Full-Stack Developer with 10 years of professional experience working on complex business applications.
Please send a clear description of the feature, expected behavior, technical stack, designs or examples, and access details if available.
Large features, urgent production work and complete applications require a custom offer.
Get to know Nathan Rmp
Fullstack developer
- FromFrance
- Member sinceOct 2020
- Avg. response time1 hour
Languages
English, French, Spanish
My Portfolio
Other Software Development Services I Offer
FAQ
Should I contact you before placing an order?
Yes. Please contact me before ordering so I can review the feature, confirm the scope and recommend the appropriate package.
What types of features can you develop?
I can develop forms, pages, filters, dashboards, REST API endpoints, database changes, authentication features, exports, business rules and third-party API integrations.
Which technologies do you work with?
I work with Vue.js, React, Angular, JavaScript, TypeScript, Java, Kotlin, Spring Boot, Hibernate, PostgreSQL and REST APIs.
What information do you need before starting?
Please provide a clear description of the feature, expected behavior, technical stack, existing source code, setup instructions and any design or mockup available.
What does “number of pages” mean in this Gig?
A page refers to one application screen or functional area. Backend-only features may not require a visible page.
What is included in design customization?
Design customization means adapting the feature to your existing interface, branding and responsive layout. It does not include a complete redesign or a new brand identity.
Can you build a complete application?
Complete applications and large features require a custom offer after reviewing the full requirements, architecture and estimated workload.
