API Development Services
Users expect things to work smoothly, even when systems behind the scenes are complex. That’s the job of a good API. At Deveit, we build APIs that connect tools, products, and services — without the friction. Our API development services focus on making those connections stable, secure, and ready to grow when you do.
Our API development solutions
A reliable API doesn’t need to be complicated — it needs to solve real problems. At Deveit, we focus on building interfaces that simplify systems, improve digital flow, and create stability across your services and applications. Whether you’re starting fresh or improving what you already have, we make your platforms talk — efficiently.
Here’s how we make it happen:
Custom API development
- No two businesses are the same — so we don’t offer cookie-cutter APIs. We create custom logic and integration points that match how your services actually operate, from backend rules to frontend needs.
REST API development
- For straightforward, scalable systems, we deliver RESTful APIs that are easy to maintain and quick to adopt. Designed with consistent naming, structured data, and thoughtful error handling, these APIs work well across browsers, apps, and services.
Third-party API integrations
- Modern tools rely on great integrations. We connect your app or platform with third-party services — handling credentials, edge cases, and real-time communication without hassle. We handle integration with external platforms smoothly. We manage authentication, throttling, and webhook handling to ensure your tools talk to each other.
API gateway implementation
- We implement API gateways to route traffic, enforce security, and simplify scaling. This provides a single entry point for all your services, increasing control and reliability.
Cloud API development
- We develop APIs optimized for AWS and Google Cloud. From serverless endpoints to custom setups, we align API logic with cloud-native infrastructure.
Mobile API development
- Mobile products live in the real world — with limited networks and users constantly on the move. That’s why we create APIs that are light, fast, and able to handle interruptions gracefully. Your mobile experience stays smooth no matter the conditions. We build mobile-focused APIs with minimal payloads, optimized for real-world usage and intermittent connectivity.
B2B API development
- When businesses exchange data, clarity and reliability are essential. We build B2B APIs that handle structured flows, support partner onboarding, and make compliance easy — from reporting to authentication. We build B2B APIs that ensure consistency, traceability, and compliance.
API security and authentication
- Security is foundational, not optional. We implement secure authentication and access control based on your product’s needs — including token-based flows, rate limiting, and encryption best practices.
API documentation and testing
- Great APIs aren’t just built — they’re also easy to understand and validate. We provide clear, interactive documentation and test suites to help teams onboard faster, reduce bugs, and deliver with confidence
Our API development process
Our approach is clear and practical — each step is built around delivering robust APIs that align with your technical and business needs. Below is our typical process, from planning to launch and beyond:
Requirement analysis
We begin with a deep understanding of your business goals, system architecture, and user needs. This helps us define what the API should do, how it should behave, and which integrations or dependencies to consider.
Design and prototyping
We outline the API structure — endpoints, data models, and responses — and validate it through wireframes or prototype documentation. This ensures alignment before development starts.
Development
Using clean, scalable code, our developers bring the API design to life. We follow best practices for modularity, error handling, and performance, ensuring long-term maintainability.
Testing
We perform automated and manual testing across endpoints, flows, and edge cases. From functional testing to security audits, we ensure the API behaves correctly under real-world conditions.
Deployment and integration
After testing, we deploy the API into your infrastructure or cloud environment. We also connect it to your existing tools, platforms, or services, ensuring everything works together seamlessly.
Monitoring and support
We monitor uptime, performance, and error logs to ensure the API runs smoothly post-launch. We also offer ongoing support for updates, fixes, and scaling as your product grows.
Businesses we work with
We support a range of industries and business sizes, tailoring API development to fit your team, goals, and product.
Startups and small businesses
We help early-stage companies build and test API-driven products fast. Whether you’re validating a business idea or creating the backend for a new app, our team focuses on core functionality that’s ready to scale later.
We don’t overcomplicate things. At Deveit, we speak clearly, build steadily, and adjust quickly. We’ve worked across industries — from eCommerce to SaaS — helping teams get reliable APIs without the usual delays or tech confusion.
Marketing and creative agencies
Agencies come to us when they need extra development capacity or technical expertise. We provide white-label API development and integration services so you can deliver complete solutions to your clients.
Medium-sized businesses and enterprises
For growing teams and established companies, we deliver reliable APIs that streamline operations, connect platforms, and support internal systems. We adapt to your stack and collaborate with in-house devs or IT teams.
Answers to frequently asked questions
What is the typical timeline for API development?
How much does API development cost?
Why choose Deveit as an API development company?
I’m interested. How do I get started?
Send us a message, fill out our form, or schedule a quick call. We’ll discuss your project goals and outline the first steps with no obligation.
