IBM i Development
Improve Delivery Confidence with our IBM i Developers

Development services for IBM i applications of all types
We’ve worked with organisations both large and small across the UK, Europe and further afield to design and develop innovative, scalable business-critical and complex IBM i applications.


Complete your IBM i development projects on time and on budget
Prevent project delays and cancellations due to a lack of development resources.
We have a large and growing pool of IBM i developers skilled in RPG and COBOL, along with modern languages such as Java, HTML, JSON and PHP.
Development and integration of modern PHP applications
We design and develop bespoke, fully responsive, modern PHP web applications that integrate seamlessly with your IBM i and deliver a smooth experience across devices.
We also specialise in developing custom integrations between your IBM i WMS/ERP/Inventory systems and third-party applications, or building extensions for your core applications, to help future-proof your IBM i against your evolving business needs.


Supporting your IBM i applications into the future
Once we’ve completed your development project, there is the option for Proximity to provide for ongoing management, support and maintenance of those applications.
Simplify the delivery of complex IBM i integrations
Streamline your technical architecture with interfaces between your IBM i applications and third-party systems.
Our blend of in-depth IBM i knowledge and broader technical expertise allows you to deliver complex integrations without delays.


Create new applications and modern GUIs
Enable the delivery of your IT strategy with direct access to developers skilled in Java, PHP and other languages.
Whether you need real-time mobile apps or easy-to-use GUIs to replace green screens, we have the expertise to support you.
Plan migrations using IBM i consultancy and expertise
Inform your migration strategy using our team of specialists for IBM i expertise and consultancy. Get advice and ongoing support as you shape and execute your migration plans.
We support your IBM i systems for as long as you need.

Use Cases
Custom IBM i applications from a team of specialists
When you need development services to extend the capabilities of your IBM i applications or connect them with other systems, our team is on hand to deliver projects with confidence.
If you have a very specific use case, don’t hesitate to get in touch and we can discuss your specific requirements.
If you need a modern PHP web application that integrates with your IBM i and delivers a smooth experience across devices, then you’ve come to the right place.
Want to add additional features or functionality into an existing IBM i application? We can certainly help you deliver that. Our team can also provide ongoing management, support and maintenance of the application moving forward.
If you’re looking for the development of custom integrations between your IBM i application and third-party systems, then look no further. Our team are specialists in this exact type of custom development project.
Green screens don’t necessarily meet the modern experience that your users might expect. We can help take your ‘old’ user interfaces and modernise them with familiar UI components and experiences that today’s users expect.
Why Proximity?
A team of IBM i specialists you can rely on

Industry experience
Global manufacturing, logistics, warehousing, retail and financial services companies trust us with their core systems.

Technical IBM i expertise
Access a team of 40 technical specialists with skills in RPG, COBOL, PHP and Java, as well as cloud solutions.

Stable, long-term support
100% permanent staff. We refresh our team with graduates and trainees, and we don't use agencies or contractors.