Development of APIs and Backend
We build the invisible infrastructure that makes everything work: robust APIs, scalable backends, and integrations that connect your systems.
Clean code, solid architectures, and optimized performance. The engine that powers your application. Every line of code comes from a real need.
Backend Development Services
Technical solutions that solve real business problems
API Development
Our team designs and develops REST and GraphQL APIs that connect your systems securely and efficiently. Clear documentation with OpenAPI/Swagger, robust authentication with OAuth 2.0 and JWT, and granular access control so third parties or your own frontend can consume data in a controlled way.
- Well-structured REST and GraphQL APIs
- Secure authentication (OAuth 2.0, JWT, API Keys)
- Interactive documentation with Swagger/OpenAPI
- Versioning and change control
Scalable Backend Systems
Our team builds robust backends that support your business growth. Architectures prepared to scale horizontally, optimized databases, intelligent caches, and maintainable code that your technical team can understand and evolve.
- Clean and maintainable architectures
- Optimized SQL and NoSQL databases
- Cache systems (Redis, Memcached)
- Prepared for high availability
Integrations with External Services
Our team connects your system with the outside world. Payment gateways like Stripe or Redsys, CRMs like Salesforce or HubSpot, ERPs, email services, social networks, and any third-party API your business needs to automate processes and centralize information.
- Payment gateways (Stripe, PayPal, Redsys)
- CRMs and ERPs (Salesforce, HubSpot, SAP)
- Cloud services (AWS, Google Cloud, Azure)
- Webhooks and real-time synchronization
Why trust ASD Solutions for your backend?
Our team doesn't just write code. It designs systems that work today and scale tomorrow.
Performance and speed
APIs with millisecond response times. We optimize queries, implement strategic caching, and design efficient endpoints that don't keep your users waiting.
Security by default
Robust authentication, data encryption, protection against common attacks (SQL injection, XSS, CSRF), and GDPR compliance. Security is not an extra, it's part of development.
Complete documentation
APIs documented with Swagger/OpenAPI that any developer can understand and consume. We include examples, integration guides, and test environments.
Real scalability
Architectures that grow with your business. From hundreds to millions of requests without rewriting code. We prepare your backend for success.
Does your business need to scale but current tools limit you?
We develop software that grows with you. Don't fit into a model. Build your own.
Let's talk about your projectFrequently asked questions
What is an API and why do I need it?
An API (Application Programming Interface) allows different systems to communicate with each other. You need it if you want your mobile app to connect with your server, integrate your website with a CRM, allow third parties to access your data in a controlled way, or automate processes between different tools. It's the backbone of any modern system.
REST or GraphQL? Which suits me better?
REST is ideal for most projects: it's mature, well-documented, and easy to consume. GraphQL shines when you have multiple clients with different data needs (web, mobile, third parties) or when you want to avoid over-fetching. We analyze your specific case and recommend the best option.
Can I connect my current system with other tools?
Yes, we develop integrations with practically any service that has an API: payment gateways (Stripe, PayPal, Redsys), CRMs (Salesforce, HubSpot), ERPs (SAP, Odoo), email services (SendGrid, Mailchimp), social networks, and more. If it has an API, we can integrate it.
How do you guarantee API security?
We implement multiple security layers: authentication with OAuth 2.0 or JWT, rate limiting to prevent abuse, strict input validation, TLS encryption, protection against OWASP Top 10, and security audits. We also configure monitoring to detect anomalous behavior.
What technologies do you use for backend?
We select the optimal technology for each project. We work with Golang for high-performance systems, Node.js for real-time applications, Python for machine learning projects, and Java/Spring for enterprise environments. For databases we use PostgreSQL, MySQL, MongoDB, or Redis as appropriate.
Do you provide API documentation?
Always. All our APIs include interactive documentation with Swagger/OpenAPI where you can test endpoints directly. We also deliver integration guides, code examples in various languages, and access to test environments (sandbox) to facilitate integration.
What happens if my backend needs to scale in the future?
We design from the start thinking about scalability. We use architectures that allow horizontal scaling (adding more servers), implement strategic caching, optimize database queries, and prepare infrastructure to grow. When the time comes, scaling will be a matter of configuration, not rewriting code.
Ready to scale your business with technology that really works?
Your company deserves software that adapts to you, not the other way around. We build your solution together.
Let's talk about your project