Core Service

API Development Services

Robust REST and GraphQL Interfaces

The Strategic Advantage

Why API Development Services?.

An API is the contract between your data and your users. If the API is poorly designed, slow, or constantly changing, your frontend and mobile teams will spend all their time fixing bugs instead of building features.

I build APIs that developers actually want to use. I follow strict RESTful conventions, implement sensible versioning strategies, and ensure every endpoint is secured with proper authentication and rate limiting.

From simple CRUD endpoints to complex data aggregation services, I use Django REST Framework and FastAPI to deliver high-performance interfaces.

Key Benefits

  • Standardized Design: Intuitive endpoints following REST or GraphQL best practices.
  • Secure Access: Robust JWT, OAuth2, and API key authentication methods.
  • Performance: Optimized database queries and response caching.
  • Clear Documentation: Auto-generated Swagger/OpenAPI documentation.
  • Backward Compatibility: API versioning to ensure old clients don't break.

Comprehensive Solutions

My Offerings.

🔗

REST APIs

Resource-oriented APIs built with Django REST Framework.

High-Performance Endpoints

FastAPI endpoints for high-throughput or machine learning workloads.

🔌

Third-Party Integrations

Webhooks and API integrations with services like Stripe, Twilio, and SendGrid.

Modern Tools

My Tech Stack.

PythonDjango REST FrameworkFastAPIPostgreSQLSwagger / OpenAPIJWT

Proven Experience

Real Projects.

See how I've implemented these technologies in real-world production environments.

Technical Comparison

REST vs GraphQL.

CriteriaREST APIGraphQL
Data FetchingMultiple endpointsSingle endpoint
Over-fetchingCommonEliminated
Learning CurveLow (Standard)Steeper
CachingEasy (HTTP native)Complex

How I Work

Development Process.

01
Discovery
02
Proposal
03
Build
04
QA
05
Launch

What Clients Say

Real feedback from real projects.

"Nimesh built the GymTaar Flutter app from scratch — gym management, member tracking, trainer scheduling, the works. We had it on the App Store in about 10 weeks. Clean code, zero hand-holding required, and he flagged a database design issue in week two that would've caused us real pain later. Would hire again without hesitation."
RA

Rajin Acharya

Founder, GymTaar (Nepal)

"We needed the BabalCloud platform built fast and built right. Nimesh delivered a Next.js frontend with a Django backend that's been running in production for over a year with no major issues. What stood out was the communication — weekly updates, no surprises, and he pushed back on a couple of feature requests that would've added weeks of scope for no real user benefit."
AB

Anupam Bista

Founder, BabalCloud (Nepal)

"Our Insuretech Nepal website needed to handle a lot of dynamic content and load fast on mobile. Nimesh sorted out the architecture properly from the start — server-side rendering, proper SEO setup, and it scored well on Core Web Vitals on launch day. He works like someone who's done this before, not like someone learning on your project."
SS

Suman Silwal

CEO, Insuretech Nepal

Common Inquiries

Frequently Asked Questions.

Do you build REST or GraphQL APIs?

I primarily build REST APIs as they are simpler, easier to cache, and suitable for 90% of use cases. However, if your frontend has highly complex and varied data requirements, I can implement GraphQL.

How do you document the APIs?

I use tools like drf-yasg or FastAPI's built-in tools to auto-generate interactive Swagger/OpenAPI documentation, making it easy for frontend developers to test endpoints.

Can you integrate with external APIs?

Yes, I frequently integrate third-party APIs (payment gateways, SMS providers, weather data, etc.) and build resilient webhook handlers to process external events.

How do you handle API security?

I implement JWT or token-based authentication, rate limiting (throttling) to prevent abuse, and strict input validation to prevent injection attacks.

What is your hourly rate for API development?

My rate ranges from $25 to $45/hr. I also offer fixed-price quotes for well-defined API specs.

Investment

Transparent pricing — no surprises. All prices in USD.

Fixed Price

From $500

Defined scope, milestones, and delivery date. Ideal for well-specified projects where the requirements won't change.

Most popular

Hourly Rate

$25–$45 / hr

Flexible for ongoing work, iterations, or evolving requirements. Billed weekly with time reports.

Retainer

From $800 / mo

Dedicated hours each month. Priority availability. Best for long-term product partnerships.

Free 30-min consultation included with every inquiry. Contact me for a tailored estimate.

Get In Touch

Start Your Project.

Start Your Project

Ready to turn your ideas into reality? Fill out the form below with your project details, and I will get back to you within 24 hours with a free consultation and quote.

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Related Resources

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Need a Developer?

I'm based in Kathmandu and available for freelance projects worldwide. Let's build something that works.

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