PHASE 01
REST API Development
Structured REST APIs for web, mobile, and third-party applications with validation, consistent responses, error handling, and clear resource boundaries.
Production-ready handover
Available
Specialized Service
Backend Development Services
Secure and maintainable backend systems, APIs, and application services built with Node.js, NestJS, Express.js, and FastAPI for modern web and mobile products.
- Typical Timeline
- 2-8 weeks
- Delivery Model
- Project-based or ongoing development
- Investment
- Starting From 400$
Service Overview
Backend systems designed for reliability and growth
Sattar Web Studio provides backend development services for web applications, mobile applications, SaaS products, business platforms, and API-driven systems.
I build backend applications using Node.js, NestJS, Express.js, and FastAPI, with REST APIs or GraphQL depending on the requirements of the product. The focus is on clear application architecture, secure authentication, reliable data handling, maintainable business logic, and APIs that frontend and mobile applications can integrate with efficiently.
Backend development can include database design, authentication and authorization, role-based access control, third-party integrations, file and media handling, background processing, caching, API validation, error handling, and deployment-ready application configuration.
Whether you need a backend for a new product, an API for an existing frontend, integration with external services, or improvements to an existing backend codebase, the system is designed around the application's actual requirements rather than unnecessary architectural complexity.
Why Partner With Me
Direct senior-level execution without agency overhead or junior handoffs.
Architecture-First
Built with scalable design patterns and clean boundaries to ensure long-term agility.
100% Code Ownership
Full intellectual property transfer, clean Git history, and complete documentation.
Production Standards
Strict TypeScript, automated testing, and optimized Core Web Vitals out of the box.
Ready to talk specifics?
Schedule an introductory call →Tech Stack & Ecosystem
Engineered with Modern, Production-Grade Tools
Every technology in this stack is selected for strict type safety, predictable maintainability, and optimal Core Web Vitals performance.
Node.jsNestJSExpress.jsFastAPITypeScriptPythonREST APIsGraphQLPostgreSQLMongoDBRedisDocker
Deliverables & Artifacts
What You Receive & Own
Every engagement produces battle-tested codebases and clear handover assets with 100% intellectual property ownership and zero lock-in.
PHASE 02
GraphQL APIs
GraphQL APIs for applications that benefit from flexible data querying, typed schemas, and efficient client-driven data access.
Production-ready handover
PHASE 03
Authentication & Authorization
Secure authentication flows using technologies such as JWT, along with authorization and role-based access control for protected application functionality.
Production-ready handover
PHASE 04
Database Design & Integration
Relational and NoSQL database integration using PostgreSQL, MongoDB, and appropriate data-access patterns based on the application's requirements.
Production-ready handover
PHASE 05
Business Logic & Application Services
Backend services that keep business rules separate from transport and infrastructure concerns, making important application behavior easier to maintain and test.
Production-ready handover
PHASE 06
Third-Party Integrations
Integration with payment providers, email services, media storage, external APIs, webhooks, and other services required by the product.
Production-ready handover
PHASE 07
Performance & Caching
Caching and backend optimization using tools such as Redis where application traffic and data-access patterns justify it.
Production-ready handover
PHASE 08
Background Processing
Asynchronous processing for operations such as email delivery, scheduled tasks, imports, notifications, and other workloads that should not block API requests.
Production-ready handover
Need custom deliverables or legacy integrations?
Engagements can be adapted to integrate with your existing CI/CD, cloud providers, or security policies.
Transparent Pricing
Predictable Investment, Real Impact
Choose the engagement model that matches your current product stage. All tiers feature direct senior execution with zero agency overhead.
API Starter
Typical delivery: 1–2 weeks
For smaller applications that need a focused backend API with a database and essential application functionality.
$200+
Fixed-price milestone engagement
Included in this tier:
- REST API development
- Database integration
- Request validation
- Authentication
- Basic authorization
- Error handling
- API documentation
- Deployment-ready setup
Application Backend — Featured
Typical delivery: 3–6 weeks
For production applications requiring structured business logic, secure APIs, database architecture, and external integrations.
$700+
Fixed-price milestone engagement
Included in this tier:
- NestJS, Express.js, or FastAPI backend
- REST API or GraphQL
- Database design & integration
- Authentication & role-based access
- Business logic implementation
- Third-party API integrations
- Background processing where required
- Caching where appropriate
- Testing & validation
- Docker-ready setup
Custom Backend System
Typical delivery: Based on scope
For larger or more specialized backend systems with complex workflows, integrations, infrastructure, or scalability requirements.
Custom
Fixed-price milestone engagement
Included in this tier:
- Backend architecture planning
- Multiple application modules
- Complex business workflows
- REST and/or GraphQL APIs
- Advanced authorization
- External service integrations
- Background jobs & queues
- Redis caching where appropriate
- Database architecture
- Testing strategy
- Deployment support
✓ 100% code ownership & clean Git history • ✓ Direct senior developer communication • ✓ Comprehensive technical handover
Let's Build Together
Need a reliable backend for your application?
Let’s build a secure, maintainable backend with the right APIs, database architecture, authentication, and integrations for your product.
Fast 24-hour responseNo obligation technical scope100% IP & code ownership