Backend & API Development
The backend is the backbone of every modern application. The Freelancer Marketing develops secure, scalable REST & GraphQL APIs and full-stack API development with Node.js and Python – as a solid foundation for your frontend applications, mobile apps and integrations.
- REST & GraphQL APIs
- Node.js / Python Backend
- Serverless Functions
- Authentication & Security
- Email Systems (IMAP, Nodemailer)
- WhatsApp & SMS Integration
REST & GraphQL APIs
APIs are the interfaces through which your applications communicate. We develop both REST APIs according to OpenAPI standard and GraphQL APIs, depending on what is optimal for your use case.
Node.js & Python Backend
Node.js is our primary choice for performant, event-driven backend services. With Express, Fastify or NestJS we develop scalable server applications that work reliably even under high load.
Serverless Functions
Serverless computing revolutionizes how we develop and deploy backend logic. With AWS Lambda, Vercel Edge Functions or Supabase Edge Functions we develop highly scalable functions that only incur costs when actually used.
Authentication & Security
Security is not an option but a necessity. We implement robust authentication systems with OAuth 2.0, JWT, SAML or WebAuthn for passwordless login. Multi-factor authentication (MFA), single sign-on (SSO) and role-based access control (RBAC) ensure only authorized users access sensitive data.
Email & Messaging Integration
Communication is central to many applications. We integrate email systems with IMAP/SMTP, use services like SendGrid, Postmark or AWS SES for transactional emails and implement templating systems for professional email communication.
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