You will get secure scalable REST APIs with Node.js Express and TypeScript
Project details
Is your application struggling with slow APIs, unreliable backend systems, poor database architecture, security issues, or scalability problems? I’ll build a secure, scalable, high performance backend and REST API engineered for production.
I specialize in Node.js backend development, Express.js, TypeScript, REST API development, backend architecture, PostgreSQL, MongoDB, Prisma, Mongoose, database design, JWT authentication, OAuth, RBAC, API integration, payment integration, webhooks, and cloud deployment.
Whether you need a SaaS backend, web application backend, mobile app API, eCommerce API, AI application backend, admin system, authentication system, or custom backend development, I’ll deliver clean, maintainable and scalable infrastructure.
Expect secure API endpoints, optimized database queries, validation, error handling, testing, API documentation, and production ready deployment.
Typical delivery: 3–10 days, depending on project scope.
Need a reliable API or scalable backend? Send your requirements and let’s build it.
I specialize in Node.js backend development, Express.js, TypeScript, REST API development, backend architecture, PostgreSQL, MongoDB, Prisma, Mongoose, database design, JWT authentication, OAuth, RBAC, API integration, payment integration, webhooks, and cloud deployment.
Whether you need a SaaS backend, web application backend, mobile app API, eCommerce API, AI application backend, admin system, authentication system, or custom backend development, I’ll deliver clean, maintainable and scalable infrastructure.
Expect secure API endpoints, optimized database queries, validation, error handling, testing, API documentation, and production ready deployment.
Typical delivery: 3–10 days, depending on project scope.
Need a reliable API or scalable backend? Send your requirements and let’s build it.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 21 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
About Bello
Senior Full Stack & AI Product Engineer
Lagos Island, Nigeria - 1:01 pm local time
I build and ship production ready AI products, SaaS platforms, and full stack web applications for startups, businesses, and growing product teams. I specialize in turning complex product requirements into scalable, secure, and maintainable software that is built for real users and real business needs.
My core expertise includes Full Stack Development, AI Product Engineering, AI Application Development, Generative AI, LLM Applications, AI Agents, React, Next.js, TypeScript, JavaScript, Node.js, Express.js, REST APIs, PostgreSQL, MongoDB, SaaS Development, API Development, Authentication, RBAC, Cloud Deployment, AWS, Docker, and modern web architecture.
What I can build for you
• AI Applications & AI Agents using OpenAI, Anthropic Claude, LangChain, and LLM APIs
• Full Stack Web Applications with React, Next.js, TypeScript, Node.js, and Express.js
• SaaS Products from architecture and MVP development through production deployment
• AI Automation & Intelligent Workflows that integrate LLMs into existing products and business processes
• REST APIs & Backend Systems with secure authentication, authorization, databases, and scalable architecture
• Ecommerce Platforms with product management, checkout, payments, order management, and customer workflows
• Cloud & Production Deployment using AWS, Docker, Vercel, and modern deployment infrastructure
I've worked across AI, SaaS, healthcare, ecommerce, education, and business software, taking ownership across the full product lifecycle: architecture, frontend development, backend engineering, API development, database design, AI integration, testing, deployment, optimization, and maintenance.
Core expertise: Full Stack Development, Full Stack Developer, Full Stack Engineer, Senior Full Stack Engineer, AI Product Engineering, AI Development, AI Application Development, AI Apps & Integration, AI Agent Development, Generative AI, LLM Applications, LLM Integration, AI Automation, AI Workflows, AI SaaS, SaaS Development, SaaS Application Development, AI Software Development, OpenAI API, Anthropic Claude, LangChain, React, React.js, Next.js, Next.js Development, TypeScript, JavaScript, Node.js, Node.js Development, Express.js, Backend Development, Backend Engineering, API Development, REST API, Web Application Development, Web Development, Frontend Development, Frontend Engineering, PostgreSQL, MongoDB, Database Design, Cloud Deployment, AWS, Docker, Ecommerce Development, Ecommerce Website Development, Technical Architecture, Software Architecture, MVP Development, Product Engineering.
I also bring technical leadership and product thinking to projects, working directly with founders and stakeholders to understand the business problem, make sound technical decisions, and deliver software without unnecessary complexity.
If you need a senior engineer who can take an idea, existing product, or technical challenge and turn it into reliable production software, let's talk.
Steps for completing your project
After purchasing the project, send requirements so Bello can start the project.
Delivery time starts when Bello receives requirements from you.
Bello works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & API Architecture
I’ll review your requirements and plan the API architecture, endpoints, database structure, authentication, and integrations.
Backend Development
I’ll develop your backend using Node.js, Express.js, TypeScript, and clean, scalable architecture.