Atlas and Immigration Caseworking Market Engagement

Atlas & Immigration Caseworking is the Home Office’s business-critical system used by caseworkers to manage the processing of visa and asylum applications. It also provides operational functionality for Border Force and Immigration Enforcement. The system has a requirement to 24 hours a day, 7 days a week availability, with updates and enhancements continually delivered to enhance functionality and capabilities. It underpins a range of critical national priorities and a significant amount of continuous improvement work driving strategic outcome delivery from the Caseworking Capability.
The objective is a re-procurement to replace the following two incumbent contracts:
• Atlas Caseworking Asylum
• Atlas Caseworking Non-Asylum
This new procurement is intended to replace the withdrawn procurement for Atlas Caseworking (Asylum & Non-Asylum) whose market engagement was conducted in March 2025 as itt_81818 under the GCA Technology Services 3 framework.
Both those contracted services cover and provide Development and Level 3 Support to the Atlas Caseworking platform, a containerised Open-source Java microservice application deployed into AWS, which orchestrates workflow following Business Process Management processes, triggered by events, using agile release trains which group microservices for release.

This procurement is expected to be conducted through a GCA framework.
In addition to re-procuring these services, the objective of Atlas & Immigration Caseworking is to evolve and enhance the overall immigration caseworking operating model, with a greater emphasis on supplier accountability, collaboration, and strategic partnership.
The Home Office will be going to market for supplier(s) who can provide the following services:
• Experience in managing, delivering and supporting complex solutions in large agile product portfolios
• Experience in multi-supplier ecosystems as integrator and/or partner supplier
• Agility to quickly respond to changes required in development team capacity (increasing or decreasing resources)
• Comprehensive skills in line with the current technology stack
• Experience of managing and supporting Government applications and services, with appropriate Government compliant onshore resources and facilities, with potential for 24x7 monitoring and appropriate support capabilities; any offshoring would need to comply with strict Government security policy
• Track record of innovation and leadership to drive continuous improvement
• Ability to drive the convergence and the use of shared technology and resource
• Commitment to use and integrate to client-side management tools for tracking and managing incidents, service requests, changes and problems
• Ability to support frequent releases, comprising of multiple dev changes across services – for context, there have been 2500+ code releases across Atlas each year since 2021
Suppliers are requested to continue monitoring the original PMEN for any updates or further clarifications relevant to the current procurement.
The content of this Notice, including the nature of works and services including start date of contract, may be subject to change. This engagement is intended to inform the Authority’s procurement strategy and does not constitute a call for competition. Participation in preliminary market engagement will not be taken into account in any subsequent procurement process.