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Intelivita is a Node.js development company in the UK, building backend systems, APIs and full-stack applications for startups, SMEs and enterprises.
We develop Node.js applications for custom business workflows, real-time data, third-party integrations and high-concurrency backend requirements.
Application Architecture • REST APIs • Microservices • Database Design
Node.js Backend • React • Angular • Vue.js
SaaS Platforms • Business Applications • SPAs • Server-Side Logic
Mobile APIs • Authentication • Application Data • Real - Time Updates
REST APIs • Third-Party APIs • System Integration • API Authentication
WebSockets • Live Dashboards • Chat Systems • Real-Time Data
Legacy Migration • Architecture Review • Business Logic • Code Modernisation
Codebase Review • Architecture Fixes • Refactoring • Delivery Recovery
Performance Audit • Security Review • Code Refactoring • Maintainability
Architecture Planning • Technology Selection • Migration Planning • Technical Feasibility
Bug Fixes • Security Updates • Performance Work • Ongoing Development
HOME SERVICES
Web Design · Web Development · UI/UX · WordPress

TRAVEL & HOSPITALITY
Web Design · Web Development · Booking Experience · UI/UX

MANUFACTURING
Web Design · Web Development · UI/UX · SEO

We implement Privacy by Design architecture, embedding data protection at every development stage. Personal and sensitive user data is handled securely with controlled access, meeting UK legal requirements and reducing the risk of regulatory penalties or reputational damage.
We have experience integrating Open Banking APIs and maintaining FCA-compliant audit logs for financial applications, so your banking or fintech platform adheres to UK regulations, supports secure transactions, and stays fully transparent for audits.
Our security protocols follow ISO 27001 standards and Cyber Essentials Plus certification guidelines, including JWT encryption, robust authentication, secure data transmission, and OWASP Top 10 vulnerability mitigation, protecting your application against cyber threats and supporting long-term reliability.
Node.js is our primary runtime, providing stability, high concurrency, and non-blocking I/O ideal for real-time applications, APIs, and resilient backend systems. Deno is a modern, secure runtime for JavaScript and TypeScript, used where future-proofing and safer execution matter for new projects.
NestJS suits enterprise-grade applications, with a modular, maintainable, and testable architecture for complex business logic, microservices, and growth APIs. Express.js and Fastify suit lightweight microservices and high-performance server-side applications, handling requests fast with minimal overhead even under high traffic.
MongoDB is a document-oriented database suited to flexible, schema-less storage for SPAs, real-time apps, and projects needing rapid development. PostgreSQL is a robust relational database for structured data, complex queries, and critical business workflows. Redis is an in-memory caching system for fast data access, session management, and real-time responsiveness.
AWS Lambda gives you serverless architecture that scales automatically and reduces infrastructure overhead. Docker and Kubernetes handle containerisation and orchestration for consistent, fault-tolerant deployments. CI/CD pipelines automate testing, integration, and deployment to speed up delivery and reduce errors.
“What stood out most about Intelivita was their ability to operate as a true delivery partner rather than just a development vendor. They combined strategic input with hands-on execution, helping shape the product while also building it.”
“Intelivita has developed an app that can dynamically display research questions and support a participant through all stages of their research journey.”
“What stood out most about Intelivita was the balance between professionalism and personal approach, which made the entire development process both efficient and enjoyable.”
Whether you're building a new backend, API or full-stack application, migrating an existing system or improving an existing Node.js codebase, tell us what you need. We'll review your requirements and discuss the development approach.