You will get a Node.js REST API or backend feature with PostgreSQL
Project details
You will get a secure, scalable Node.js REST API or backend feature built with TypeScript, Express.js or NestJS & PostgreSQL. I can add endpoints to an existing application or create a focused backend service with clean architecture, validation, database integration & reliable error handling.
Depending on the selected package, your backend can include authentication, PostgreSQL data models, REST API endpoints, automated tests, API documentation & deployment. Scope is defined by the number of endpoints included. Each endpoint represents one HTTP method and route with one defined request and response flow.
I am a backend developer with 10+ years of experience building fintech, ecommerce, SaaS, data integration & enterprise systems. My production work includes financial data pipelines, high-traffic ecommerce services, authentication for 1M+ users & revenue-critical APIs.
Please provide clear requirements, source code when applicable, database details & documentation for external services. Frontend development, UI/UX design, undocumented third-party systems, major legacy refactoring, paid services & functionality outside the selected package are quoted separately.
Depending on the selected package, your backend can include authentication, PostgreSQL data models, REST API endpoints, automated tests, API documentation & deployment. Scope is defined by the number of endpoints included. Each endpoint represents one HTTP method and route with one defined request and response flow.
I am a backend developer with 10+ years of experience building fintech, ecommerce, SaaS, data integration & enterprise systems. My production work includes financial data pipelines, high-traffic ecommerce services, authentication for 1M+ users & revenue-critical APIs.
Please provide clear requirements, source code when applicable, database details & documentation for external services. Frontend development, UI/UX design, undocumented third-party systems, major legacy refactoring, paid services & functionality outside the selected package are quoted separately.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$299
|
Standard
$749
|
Advanced
$1,490
|
|---|---|---|---|
| Delivery Time | 4 days | 8 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 2 | 6 | 12 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $450
Additional Revision
+$75
Additional Page
(+ 1 Day)
+$80
Additional API Endpoint
(+ 1 Day)
+$120
Third-Party API Integration
(+ 3 Days)
+$390
Application Deployment
(+ 2 Days)
+$290Frequently asked questions
About Vlad
React Developer | Full Stack Next.js React Native Node.js | AI Mobile
Vinnytsya, Ukraine - 3:18 pm local time
◆ On the web I work across Node.js · React · Next.js · TypeScript · iOS · React Native · AWS · TypeScript · Angular · Vue · Nuxt · NestJS & Express.js with PostgreSQL · MongoDB & Redis · designing GraphQL & REST APIs. On mobile I ship native iOS Swift · native Android Java & Kotlin · Wear OS smartwatch apps and cross-platform React Native. I bring AI into products - Python-powered offline LLM chat with code capabilities, AI-assisted PR review adopted as a team standard & AI chatbots - I own DevOps end to end on AWS · Docker · Kubernetes & Linux
◆ Full stack web development
Scalable, production-grade applications from architecture to release - Node.js · TypeScript · Java · Spring & Kafka event streaming on the backend & React · Next.js · Redux · Angular · Vue.js on the frontend. I design clean GraphQL & REST APIs & own the data layer in PostgreSQL · MongoDB & Redis, with a focus on 𝗿𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗮𝘁 𝘀𝗰𝗮𝗹𝗲
◆ Mobile app development iOS · Android · Wear OS
Native and cross-platform apps that stay live for 8 years. I've shipped ride-hailing (native Android + iOS, 2-tap ordering, real-time driver tracking), golf performance tracking Android + Wear OS, sensor-based auto shot detection, GPS, fully offline & offline-first travel guides - several still live & updated on the App Store & Google Play years after launch, with on-device processing and offline-first architecture
◆ AI-augmented development
I integrate AI where it earns its place: an offline, Python-powered LLM chat with code capabilities for an air-gapped enterprise, AI-assisted code review that improved review speed & quality across the team & AI chatbots. Python is my core tool for AI data & automation
◆ DevOps · cloud & reliability
AWS · serverless · EC2 · Lambda · Docker · Kubernetes · nginx · Linux · plus CI/CD & production monitoring with New Relic. I own alerting, root-cause analysis & reliability on live, revenue-critical systems. I've built & operated self-hosted infrastructure end to end
◆ E-commerce engineering
Salesforce Commerce Cloud · SFCC/SFRA · Demandware · ISML & headless commerce SCAYLE · commercetools · VueStorefront. I've integrated Klarna · Adyen · PayPal & reCAPTCHA into live checkout, built queue-based API services with retries & idempotency & led SFCC delivery for storefronts behind 𝗯𝗶𝗹𝗹𝗶𝗼𝗻𝘀 𝗶𝗻 𝗰𝗹𝗶𝗲𝗻𝘁 𝗿𝗲𝘃𝗲𝗻𝘂𝗲
◆ Data BI integration & automation
Multi-source data aggregation & business-intelligence platforms that become a single source of truth, low-code / no-code data integration & n8n-style workflow automation - reliable, idempotent, queue-based API services and GraphQL / REST integrations
◆ How I work
I own architecture as a tech lead, mentor junior-to-senior developers, set documentation standards & turn business requirements into shipped software with clear, proactive communication & a bias for reliability
◆ Services
Full stack development · Web application development · Node.js backend development · React & Next.js development · Full-stack development · TypeScript development · Fullstack development · Angular & Vue.js · Mobile app development · iOS & Android app development · React Native · API integration & API development · GraphQL · DevOps & Cloud infrastructure · AWS · Docker · Kubernetes · AI development · LLM integration · Python automation · n8n workflow automation · Salesforce Commerce Cloud · headless commerce · payment integration · SEO · Node.js developer · React developer · iOS app developer · Android app developer · full-stack engineer · TypeScript developer · Next.js developer · Vue.js developer · NestJS developer · GraphQL API development · microservice architecture · real-time applications · WebSockets · serverless architecture · e-commerce development · SaaS development · Full stack developer · data engineering · chatbot development · Fullstack developer · database design · cross-platform development · front-end development · Full-stack developer · HTML5 · CSS · Mobile app developer · 10+ years experiences · mobile apps still live 8+ years after launch
Stack: Node.js · TypeScript · JavaScript · React · Next.js · Angular · Vue.js · Nuxt.js · NestJS · Express.js · GraphQL · Redux · PostgreSQL · MongoDB · Redis · Firebase · iOS · Swift · Android · Kotlin · Java · Wear OS · React Native · Python · AI Development · AWS · Docker · Kubernetes · Linux · CI/CD · Salesforce Commerce Cloud · n8n
Last updated: July 2026
Steps for completing your project
After purchasing the project, send requirements so Vlad can start the project.
Delivery time starts when Vlad receives requirements from you.
Vlad works on your project following the steps below.
Revisions may occur after the delivery date.
Scope Review & API Contract
I review the requirements, endpoints, data flows, authentication rules & acceptance criteria and define the API contract.
Backend & Database Architecture
I prepare the Node.js application structure, PostgreSQL data models, validation logic & required services.