Browse categories
Explore
Fiverr Pro
English
$
USD
Our agency will develop the backend using node js or nest js apis
Kretoss Tech
Level 2
Agency
5.0
5.0
Gig Summary
What people loved about this freelancer
tibaltjarre
France
Exceptional work! Communication was smooth throughout the process, very polite, professional, and always quick to respond. I highly recommend their services...
maitesabo
Belgium
Working with Kretoss was a great experience. They were extremely professional, quick to respond, and always one step ahead. The website turned out clean, functional,...
maitesabo
Belgium
It was a pleasure to work with Kretoss Technology. Professional, responsive, and reliable from start to finish. They went above and beyond to deliver a website...
guillem_boix
Spain
The Figma design looked really beautiful and well put together, you can tell a lot of care went into every detail. The layout, the colors, and the way everything...
guillem_boix
Spain
I’ve already worked on several projects with this team, and what impressed me the most this time was the outstanding support: 10/10. Kretoss is very kind and...
Vetted by Fiverr Pro
Kretoss Tech was selected by the Fiverr Pro team for their expertise.
About this gig
Greetings,
Chintan here co-founder of Kretoss, We have an experienced backend development team that specializes in Node.js, Express.js, and MySQL or MongoDB.
Our professional background encompasses extensive experience in the development of RESTful APIs and backend systems as well as will integrate the backend API into your website or mobile app
Our professional accomplishments include.
- Designing, developing, and deploying integrations that meet business needs.
- Will develop backend API with database and integration that API in Web or Mobile app.
- Building backend rest APIs using Express JS framework.
- Integrating the front end of the integration middleware (Web or APP) with the backend. Deploying code.
Note: Please connect on chat before placing an order. Let's discuss this in detail. Time and cost depend on your requirements.
Thanks
About this agency
Kretoss Tech
Agency
50 employees
Level 2
Kretoss Tech is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Mobile App Development
Website Development
- FromIndia
- Member sinceMar 2015
- Avg. response time1 hour
- Last delivery2 days
Languages
English, Hindi, Gujarati
Kretoss Technology delivers production-ready Web, Mobile, AI, and Custom software solutions for startups & enterprises clients.
AI Automation, AI Agents, SaaS Dev, Mobile Apps, Web Dev, ERP & CRM, Shopify, Flutter, React, UI/UX, and API Integrations.
✓ 1,500+ successful projects delivered worldwide
✓ 12+ years of software development expertise
✓ Trusted by startups & enterprise clients
✓ Dedicated team of experienced engineers
✓ Transparent communication
OpenAI, Claude, React, Next.js, Flutter, React Native, Laravel, Node.js, Python, .NET, Supabase, Firebase, PostgreSQL, Shopify & AWS.
Portfolio
Other Software Development Services we Offer
FAQ
Will you customize existing Web Application?
Yes, i can customize existing Web app and also add new features if you required.
What other backend technologies are you familiar with other than Node JS?
I am quite proficient in Typescript, Codeigniter, Django and Laravel.
Can you work with specific frameworks or libraries?
Absolutely! I'm proficient in working with various Node.js frameworks like Express.js, Nest.js, and LoopBack, among others.
Do you provide ongoing support and maintenance services after the project is completed?
Absolutely! I prioritize building long-term relationships with my clients. After the initial project is completed, I provide ongoing support and maintenance services to ensure your application runs smoothly. This includes bug fixes, updates, and infrastructure scaling as needed.
Can you help with setting up and configuring the server for my web application?
Absolutely! I specialize in server setup and configuration, ensuring your web application runs with optimal performance and security. Whether you're using traditional servers or cloud platforms like AWS or Azure, I have the expertise to set up and optimize your infrastructure.
What services do you offer in this gig?
We specialize in backend development using Node.js and NestJS. My services include: Developing RESTful APIs and GraphQL APIs Database integration (MongoDB, PostgreSQL, MySQL) Authentication & Authorization (JWT, OAuth, Firebase Auth) Third-party API integrations WebSocket & real-time applications
Do you provide database integration?
Yes! We can integrate databases such as MongoDB, PostgreSQL, MySQL, Firebase, and Redis. We also handle ORMs like Prisma, TypeORM, and Mongoose for efficient database management.
Can you integrate third-party APIs?
Yes! We can integrate third-party services such as Stripe (payments), Twilio (SMS), Firebase, OpenAI, Google APIs, and more.
Reviews
28 reviews for this Gig
| (28) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T 
tibaltjarre
France
Ongoing collaborationExceptional work! Communication was smooth throughout the process, very polite, professional, and always quick to respond. I highly recommend their services to anyone looking for reliable and top-quality development.
$1,000-$2,500
Price
3 days
Duration
Helpful?M 
maitesabo
Belgium
Ongoing collaborationWorking with Kretoss was a great experience. They were extremely professional, quick to respond, and always one step ahead. The website turned out clean, functional, and perfectly aligned with our vision. Their attention to detail and willingness to go the extra mile made all the difference. Highly recommend!
$1,000-$2,500
Price
2 weeks
Duration
Helpful?M maitesabo
Belgium
Ongoing collaborationIt was a pleasure to work with Kretoss Technology. Professional, responsive, and reliable from start to finish. They went above and beyond to deliver a website that looks great. Communication was quick and clear throughout. If you’re looking for someone who combines technical skill with genuine dedication...
$1,000-$2,500
Price
2 weeks
Duration
Helpful?G guillem_boix
Spain
Ongoing collaborationThe Figma design looked really beautiful and well put together, you can tell a lot of care went into every detail. The layout, the colors, and the way everything is presented feel clear and professional. It also has a modern and friendly style that makes it easy to follow while still being very pleasant...
$2,500-$5,000
Price
2 weeks
Duration
R 
Seller's Response
Helpful?G guillem_boix
Spain
Ongoing collaborationI’ve already worked on several projects with this team, and what impressed me the most this time was the outstanding support: 10/10. Kretoss is very kind and responds incredibly fast. I truly recommend them to anyone who needs help with programming. They’re professional, friendly, and provide excellent service. Definitely 10/10!
$2,500-$5,000
Price
5 weeks
Duration
Helpful?
Reviews
28 reviews for this Gig
| (28) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T tibaltjarre
France
Ongoing collaborationExceptional work! Communication was smooth throughout the process, very polite, professional, and always quick to respond. I highly recommend their services to anyone looking for reliable and top-quality development.
$1,000-$2,500
Price
3 days
Duration
Helpful?M maitesabo
Belgium
Ongoing collaborationWorking with Kretoss was a great experience. They were extremely professional, quick to respond, and always one step ahead. The website turned out clean, functional, and perfectly aligned with our vision. Their attention to detail and willingness to go the extra mile made all the difference. Highly recommend!
$1,000-$2,500
Price
2 weeks
Duration
Helpful?M maitesabo
Belgium
Ongoing collaborationIt was a pleasure to work with Kretoss Technology. Professional, responsive, and reliable from start to finish. They went above and beyond to deliver a website that looks great. Communication was quick and clear throughout. If you’re looking for someone who combines technical skill with genuine dedication...
$1,000-$2,500
Price
2 weeks
Duration
Helpful?G guillem_boix
Spain
Ongoing collaborationThe Figma design looked really beautiful and well put together, you can tell a lot of care went into every detail. The layout, the colors, and the way everything is presented feel clear and professional. It also has a modern and friendly style that makes it easy to follow while still being very pleasant...
$2,500-$5,000
Price
2 weeks
Duration
R Seller's Response
Helpful?G guillem_boix
Spain
Ongoing collaborationI’ve already worked on several projects with this team, and what impressed me the most this time was the outstanding support: 10/10. Kretoss is very kind and responds incredibly fast. I truly recommend them to anyone who needs help with programming. They’re professional, friendly, and provide excellent service. Definitely 10/10!
$2,500-$5,000
Price
5 weeks
Duration
Helpful?
