Application Modernisation Specialist

We’re looking for a skilled Application Modernisation Specialist to play a key role in transforming legacy applications across operational environments. You’ll be responsible for assessing existing systems, identifying opportunities for improvement, and leading the transition to modern, secure, and high-performing platforms. This is a hands-on position that requires collaboration with site teams, technical stakeholders, and vendors to ensure smooth delivery of robust, maintainable solutions.

Responsibilities

Analyse legacy applications to determine suitability for upgrade, redevelopment, or re-hosting.; Identify gaps and recommend modernisation or re-architecture strategies.; Work with on-site teams to refactor and align applications with operational requirements.; Lead migration projects to modern technologies, including evaluating and implementing COTS products.; Review and address system vulnerabilities through patching, updates, and compliance checks.; Ensure modernised systems integrate seamlessly with existing infrastructure.; Support ongoing maintenance and continuous improvement through managed service frameworks.; Conduct detailed assessments to pinpoint defects, support limitations, and potential vulnerabilities.; Apply vendor updates and patches to maintain stability and compliance.; Coordinate with suppliers to explore migration routes to supported platforms.; Advise stakeholders on upgrade or rewrite options when necessary.; Develop and document modernisation and migration strategies.; Maintain accurate records of application assets and lifecycle changes.

Requirements

Proven experience in application modernisation, infrastructure support, or related disciplines.; Strong knowledge of legacy and contemporary systems (Microsoft or Linux environments).; Awareness of security principles, patch management, and compliance standards.; Excellent communication and technical documentation skills.

Nice to have

Experience within operational technology (OT) environments is advantageous, though not required.