Prox is a backend development company in London building the systems behind your digital products, from databases and APIs to business logic and third-party integrations. Our backend development services are designed for performance, security and scale.
Backend Development Services in London That Power Better Digital Experiences
[Backend Development Company London]
POWERFUL BACKENDS. SMARTER SYSTEMS. ROOM TO SCALE.
A great digital experience needs more than an impressive interface. It needs a backend that processes data, manages users, connects services and keeps every feature working as intended. At Prox Digital Agency, we build backend systems around your product's requirements, giving your frontend the functionality and infrastructure it needs to deliver real value.
Our backend development solutions include API development services and API integration services that connect your website, apps and business tools, so data moves where it needs to without manual work. We build backends for websites, web applications and mobile apps, working with our mobile app developers and MVP development team, and every backend is part of our wider web development agency service.
Backend Development Solutions Built Around Your Product
Custom Backend Development
Get a backend built around your product's specific requirements. We develop the business logic, data flows and server-side functionality needed to support your features, workflows and operations.
API Development and Integration
Connect your website, application and external platforms through reliable APIs. We build and integrate APIs that enable systems to exchange data, share functionality and work together efficiently.
Database Design and Management
Keep your data organised, accessible and consistent with a database structure designed for your application. We focus on efficient data handling, sensible relationships and performance as your information grows.
Server-Side Application Development
Power your digital product with server-side functionality that handles requests, processes information and manages application logic. We build backend components that support dependable, responsive user experiences.
Third-Party System Integration
Bring your essential tools together without creating disconnected workflows. We integrate relevant third-party services, such as payment gateways, CRM platforms, analytics tools and business systems, based on your requirements.
Authentication and Access Control
Protect user accounts and sensitive functionality with appropriate authentication and authorisation mechanisms. We implement access controls that help ensure users can access the features and information permitted by their roles.
Backend Performance and Scalability
Prepare your backend to handle growing data volumes, more complex workflows and increasing user demand. We identify performance bottlenecks and improve system efficiency to support your product's evolving needs.
Backend Maintenance and Optimisation
Keep your backend stable as technologies, integrations and business requirements change. We help identify technical issues, improve existing functionality and maintain the systems that support your digital product.
Proof Beats Promises Every Single Time
Every completed project is a clear testament to our absolute commitment to excellence and our clients' ongoing business success.
Every completed project is a clear testament to our absolute commitment to excellence and our clients' ongoing business success.
We let our track record do the talking. Discover how Prox Digital
Agency drives transformative growth for global brands.
Backend Engineering That Moves Your Business Forward
Reliable Application Performance
Efficient backend architecture helps your applications process requests, manage data and deliver consistent experiences.
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Stronger Data Protection
Appropriate access controls, secure data handling and considered system design help protect sensitive information.
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Easier System Integration
Connect essential platforms and services to reduce disconnected processes and improve how your digital systems work together.
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Built for Future Growth
Scalable architecture gives your product room to accommodate new features, growing data and changing business demands.
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Efficient backend architecture helps your applications process requests, manage data and deliver consistent experiences.
Appropriate access controls, secure data handling and considered system design help protect sensitive information.
Connect essential platforms and services to reduce disconnected processes and improve how your digital systems work together.
Scalable architecture gives your product room to accommodate new features, growing data and changing business demands.
Proof Beats Promises
Every Single Time
Join The Growth Journey Of 500+ Brands
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Frequently
Asked Questions
We’ve heard it all. Here’s everything you need to know before working with us.
Backend development services cover the server-side systems that make websites and applications function. This includes business logic, databases, APIs, authentication, data processing and integrations that support the user-facing experience.
A backend development company designs, builds and maintains the systems behind digital products. This can include database architecture, API development, server-side programming, security controls, integrations and performance optimisation.
Frontend development focuses on the parts of a website or application users see and interact with. Backend development manages the underlying logic, data, server operations and integrations that make those interactions work.
Custom backend development can be useful when your product requires specific workflows, complex data handling, tailored integrations or functionality that standard platforms cannot adequately support.
The right technology depends on your product's requirements, existing infrastructure, performance needs and long-term plans. The technology stack should be selected to support maintainability, compatibility and the functionality your application requires.
Yes. Backend development can include building APIs that allow your frontend, mobile application and connected platforms to exchange data and access specific functionality. As an API development company, we design, document and secure new APIs, and our API integration services connect the platforms you already use.
Yes. Depending on the platform and available interfaces, integrations can connect your backend with payment providers, CRM systems, analytics platforms and other business tools.
Well-designed backend systems can improve database queries, request processing, caching and data delivery. The specific improvements depend on your existing architecture and the bottlenecks identified during assessment.
Security measures may include secure authentication, role-based access controls, input validation, protected data transmission, appropriate secrets management and dependency updates. The implementation depends on your application's risks and requirements.
Yes. An existing backend can often be assessed and improved incrementally. We can identify performance issues, outdated components, integration problems and areas for code improvement before recommending a suitable approach.
They can be designed to accommodate growth through suitable architecture, efficient data handling and appropriate infrastructure. Actual capacity depends on the implementation, workload and resources available.
Yes. A mobile application's backend can manage user accounts, data storage, business logic, notifications and API connections. The scope depends on the app's features and platform requirements. We often build these alongside our mobile app development projects.
Timelines depend on the complexity of the application, integrations, data requirements, security needs and project scope. A straightforward API may require less time than a complex platform with multiple connected systems.
Costs depend on the functionality required, technical complexity, integrations, existing infrastructure and ongoing support needs. A clear scope and technical assessment help establish a realistic project estimate. We confirm the scope and price after a free technical assessment.
Ongoing support can cover technical fixes, dependency updates, performance improvements, integration maintenance and enhancements. The support scope and response expectations should be agreed according to your product's needs. For full website care, including CMS updates, backups and monitoring, see our website maintenance and support services.
You get backend engineers who work alongside designers, front-end developers and product strategists, so the systems behind your product are planned around real user journeys, not built in isolation. Every backend is documented, secured and tested before launch, and we stay on to maintain and scale it. See our platform work for Plutos Payments, Cityscape and Klensa.
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If you’re looking for a global growth agency that understands growth, execution, and accountability, you’re in the right place.