Application APIs
Backends for mobile apps, websites, portals, SaaS products, marketplaces, and internal platforms.
API & Backend Development
Secure APIs That Connect Your Product and Business
We build backend APIs for mobile applications, websites, SaaS platforms, payments, integrations, and operational systems—with senior-led remote delivery for Europe and the United States.
Authentication & Permissions
Secure login, tokens, roles, account access, organization boundaries, and administrative permissions.
Payments & Billing
Stripe payments, subscriptions, invoices, webhooks, retries, and product access rules.
Third-Party Integrations
CRM, ERP, logistics, messaging, maps, email, analytics, AI services, and business systems.
Workflow APIs
Business rules, approvals, reporting, notifications, queues, scheduled jobs, and automation.
API Modernization
Improve legacy endpoints, reduce performance bottlenecks, and create clearer service boundaries.
An API is part of the product, not an afterthought
A reliable API must protect data, express business rules clearly, handle failures, and remain understandable as the product grows. We design endpoints around real workflows rather than treating the backend as database access.
We can own the complete backend or collaborate with your existing frontend, mobile, product, or infrastructure team. Clients work directly with senior technical leadership throughout planning and delivery.
Planning an API?
Discuss your backend, integration, or API requirement
Tell us what needs to connect, who will use it, and where the current technical risk sits. We will help shape a practical delivery plan.
- ✓Node.js, TypeScript, and Spring Boot development
- ✓Mobile, web, SaaS, and integration backends
- ✓Stripe, CRM, logistics, messaging, and AI integrations
- ✓Senior-led architecture and post-launch support
Related Services
Mobile app development
Build the iOS and Android experience that connects to your backend.
Web application development
Build portals, dashboards, admin systems, and browser-based products around the API.
Software development for the USA
Our remote delivery model for American startups and growing businesses.
Frequently Asked Questions
What API development services does MarqueFactory provide?
We build REST APIs, mobile and web backends, authentication systems, payment workflows, third-party integrations, admin APIs, and integration layers for existing business systems.
Which backend technologies do you use?
We commonly use Node.js, TypeScript, Express, Spring Boot, PostgreSQL, MySQL, and MongoDB. We select technology according to the product, existing environment, security needs, and expected scale.
Can you build an API for an existing app or website?
Yes. We can extend an existing backend, replace a fragile API, create a new service around an established product, or connect third-party systems without rebuilding the entire application.
Do you work with clients in Europe and the United States?
Yes. We provide remote API and backend development for European and US startups, product teams, and growing businesses with structured communication and senior technical involvement.
Do you provide documentation and post-launch support?
Yes. Delivery can include API documentation, deployment support, monitoring guidance, handover, maintenance, performance improvements, and continued feature development.