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You will get Node.js API Endpoint development

Yuliia U.Status: Offline
Yuliia U. Yuliia U.
4.8
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Yuliia, priced and ready to go.
Yuliia U.Status: Offline
Yuliia U. Yuliia U.
4.8
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Yuliia, priced and ready to go.

Project details

You will get one simple Node.js API endpoint created for your existing backend application.

A backend expert from my team will add one endpoint based on your requirements, expected request, expected response, and current project structure. This can be done with Node.js, Express, NestJS, JavaScript, TypeScript, or a similar backend setup.

This package is focused on one small backend task, such as creating a basic GET, POST, PUT, or DELETE endpoint, connecting it to an existing service, returning structured data, or adding simple validation and error handling.

This is not a full backend feature, database redesign, or API architecture package. It covers one clear endpoint with provided requirements and code access.

This package is a good fit if your app already has a backend and you need one small API addition without starting a large development task.
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security

What's included $50

These options are included with the project scope.

$50
  • Delivery Time 1 day
  • Number of Revisions 0
4.8
36 reviews
94% Complete
(34)
1% Complete
(0)
3% Complete
(1)
1% Complete
(0)
3% Complete
(1)

KB

Konstantin B.
5.00
Jul 10, 2026
Backend-Heavy Full-Stack Developer for CS2 Gaming Platform MVP

YA

Yulia A.
5.00
Jul 3, 2026
You will get Estimation for your project\ feature Yuliia is too notch professional. She and her experts picked up the work quickly and delivered an excellent result the same day. Highly recommended.

TN

Taras N.
5.00
Jul 3, 2026
You will get Mobile App Flow Review Yuliia and her team quickly reviewed my product, identified key issues and resolved them. Helped with discovery for moving from web to React Native, and provided a clear estimate.

Communication was smooth and professional, and the team showed strong product thinking throughout. Recommended for React, Node js. and React Native development as well as discovery work.

TN

Taras N.
5.00
Jun 27, 2026
Senior Full-Stack Developer - React, Node.js SaaS Performance Check

YA

Yulia A.
5.00
Jun 25, 2026
Website Performance Review Koitechs team did a solid code review and really helped me stabilize the project. Quick turnaround, no unnecessary back-and-forth. Would definitely recommend and reach out again.
Yuliia U.Status: Offline

About Yuliia

Yuliia U.Status: Offline
Full Stack Developer | React Developer | Node.js Developer | PM
95% Job Success
4.8  (36 reviews)
Zaporizhzhia, Ukraine - 2:55 am local time
👋 Hi, Tired of chatting with AI? Let's have a real conversation.

While AI writes the posts, cover letters, and prototypes, I'm busy turning those prototypes into products that ship and actually work.

Why you can rely on me:

✅ 9+ years in software development as MVP Developer, SaaS Developer, Full Stack Developer, React Developer, React Native Developer, Node.js Developer
✅ 41+ Upwork jobs in React, Next.js, Node.js, React Native, SaaS Development and Full Stack Development
✅ 155+ web and mobile projects delivered
✅ 20,500+ Upwork hours in React | Next.js | Node.js |React Native
✅ 75% repeat clients - partnerships lasting 6-18+ months
✅ 40+ MVPs released, typically 5-8 weeks from MVP Development to pilot launch
✅ 35+ in-house engineers, matching in 24 hours or less
✅ 2-week trial period
✅ Products we support include platforms with 5M+ daily users

My team helps companies hire in-house, CTO-approved MVP Developer, SaaS Developer, Full Stack Developer, Startup Developer, React Developer, Next.js Developer, Node.js Developer, React Native Developer, Backend Developer, Supabase Developer specialists who join fast, take ownership, and deliver production-ready software.

My goal: help you move from idea to MVP, MVP to production, and MVP to scale while saving up to 40% of your development budget.

What you can expect:

🔹 In-house engineers. Every developer is screened and CTO-approved.
🔹 Fast matching Engineer matched within 24h, with weekly demos, QA and code review.
🔹 Ownership. Our developers flag risks, improve architecture, simplify MVP scope, and drive the product toward launch.

📌 How we work: Discovery & MVP Planning → MVP Architecture → Engineer Matching → MVP Development → 2-week Trial → Weekly Demos → QA & Code Review → MVP Launch → Production Support → MVP Scaling

🚀 * MVP Developer / SaaS Developer / Startup Developer

I help founders with MVP Development, Startup MVP Development, SaaS MVP Development, Web App MVP Development, Mobile App MVP Development, AI MVP Development, Marketplace MVP Development, Prototype Development, Proof of Concept, POC Development, Product Development, MVP Launch, MVP to Production, MVP Scaling.

Strong fit if you need an MVP Developer, Startup Developer, SaaS Developer, Full Stack Developer, Startup MVP Developer, SaaS MVP Developer, Web App Developer, Product Developer, Software Developer or MVP Development Team .

🚀 React / Next.js / Full Stack

We build SaaS MVPs, dashboards, admin panels, customer portals, subscription products, marketplaces and scalable web apps as react developer, react js developer, nextjs developer, next js developer, web app developer react, full stack developer react node, full stack developer supabase react.

Stack: React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, Firebase, MongoDB, REST API, GraphQL, Stripe, OAuth, WebSockets, AWS, Vercel, Docker.

Work includes MVP Development, SaaS Development, legacy code takeover, architecture modernization, API integrations, payments, subscriptions, authentication, RBAC, multi-tenancy, Supabase RLS, production launch and Core Web Vitals.

Strong fit if you need a react developer, frontend developer react, web developer, full stack developer, mern developer, backend developer, backend engineer, SaaS Developer or MVP Developer .

📱 React Native / Mobile MVP Development

We build iOS and Android apps as react native developer, react native developer expo, react native app developer, mobile app developer, Mobile MVP Developer .

Stack: React Native, Expo, Firebase, Supabase, Node.js, TypeScript, APIs, payments, push notifications, authentication .

We handle Mobile App MVP Development, React Native MVP Development, app takeover, maintenance, App Store / Google Play releases and backend integrations .

🤖 AI MVP / AI SaaS Development

25+ AI products and features shipped: AI MVP, AI SaaS, AI chatbot development, AI agent development, RAG chatbot, copilots, AI assistants, automation

Stack: OpenAI API, Claude API, LLMs, RAG, prompt engineering, Generative AI, Python, FastAPI, pgvector, web scraping, automation

Strong fit if you need an AI MVP Developer, AI SaaS Developer, AI App Developer, AI Agent Developer or Full Stack AI Developer.

🧩 SaaS & MVP Features

SaaS MVP, Startup MVP, Web App MVP, Mobile App MVP, AI MVP, Marketplace MVP, Customer Portal MVP, Admin Dashboard MVP, Internal Tool MVP, Multi-Tenant SaaS, Authentication, RBAC, Supabase Auth, Supabase RLS, Stripe Integration, Subscription Management, REST API, GraphQL API, PostgreSQL, Supabase Development, AI Integrations, Automation, MVP Architecture, MVP Launch, MVP Scaling.**

🧩 Mixed-Stack Support

Core focus: MVP Development, SaaS Development, Full Stack Development, React, Next.js, Node.js, React Native, TypeScript, Supabase, AI.

Click "Invite" or "Hire" - I'll help you clear the MVP estimate or technical discovery phase within 24 hours or less

Steps for completing your project

After purchasing the project, send requirements so Yuliia can start the project.

Delivery time starts when Yuliia receives requirements from you.

Yuliia works on your project following the steps below.

Revisions may occur after the delivery date.

expert reviews your backend structure and endpoint requirements.

Get one simple API endpoint based on the expected request and response.

Review the work, release payment, and leave feedback to Yuliia.