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Fiverr Pro
English
$
USD
I will build or integrate your node typescript rest API
Kordian Z
About this gig
Need a backend feature, REST API, database integration, or external service connected to your application?
I develop and maintain TypeScript and Node.js backend systems with a focus on clear APIs, reliable data handling, and maintainable architecture.
I can help with:
- REST API development
- Node.js and TypeScript backends
- NestJS and Fastify
- PostgreSQL and SQL
- database modeling
- CRUD and business logic
- authentication and authorization
- external API integrations
- WebSockets and realtime features
- validation and error handling
- debugging existing APIs
- refactoring backend code
- frontend/backend integration
I have professional experience building APIs, realtime functionality and database-backed applications used by web and mobile frontends.
Technology choices for new systems depend on the actual requirements. I do not choose frameworks by throwing darts at a list of fashionable tools.
For complex integrations or new backend systems, please contact me before ordering so I can scope the work properly.
Get to know Kordian Z
Kordian Z
- FromPoland
- Member sinceJun 2020
- Avg. response time1 hour
Languages
English
I’m a Software Engineer with professional experience building and maintaining web applications, backend services, APIs, databases, and internal business systems.
My commercial background includes TypeScript, React, Node.js, NestJS, Fastify, Django, PostgreSQL, WebSockets, Docker, CI/CD, and modern frontend architecture.
I work across the stack: from responsive user interfaces and complex application state to backend architecture, API design, database modeling, integrations, deployment pipelines, debugging, and performance improvements.
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Other Software Development Services I Offer
FAQ
Can you build an API from scratch?
Yes. Please contact me first for a new backend so we can define the data model, authentication, integrations and deployment requirements.
Which frameworks do you use?
My commercial experience includes NestJS and Django/DRF. For a new project I choose technology based on its requirements rather than forcing every project into one stack. I can build using Spring Boot as well as Axum.
Can you work with PostgreSQL?
Yes. PostgreSQL and SQL-backed application development are part of my professional experience.
Can you integrate third-party APIs?
Yes, assuming the service provides usable documentation and credentials/API access.
Can you implement WebSockets?
Yes. I have commercial experience implementing realtime communication with WebSockets.
Do you deploy the backend too?
Deployment can be included when agreed before ordering. Hosting accounts, paid cloud services and third-party subscriptions are not included in the Gig price.
Do you provide API documentation?
For Standard and Premium packages, I document the endpoints delivered or changed as part of the order.
