An opportunity has arisen for a 3rd Line Messaging Applications Engineer to join a high-performing, multi-disciplined team within a forward-thinking organisation that champions sustainability through innovation and trust. This is a permanent position supporting secure messaging systems across a shared infrastructure environment. What Youll Be Doing: Incident Management : Take ownership of incidents by logging, prioritising, and assigning them using appropriate toolsets. Drive each incident through to resolution, keeping records fully updated in line with established work instructions. Escalate issues when required to ensure timely resolution. Problem Management : Carry out comprehensive investigations into existing problems. Gather and analyse data from multiple platforms, delivering expert-level insight and support to drive root cause resolution. Proactively monitor and address faults within the Nexor X500 DSA system. Provide ongoing maintenance and issue resolution for the Exchange 2003 Messaging platform. Collaborate effectively with the client liaison, serving as a technical interface between the team and the end user. Your Background & Skills: Required: In-depth understanding of Simple Mail Transfer Protocol (SMTP). Working knowledge of X.400 messaging standards. Experience with Nexor DSA and X.500 directory services, including address book replication. Strong skills in UNIX scripting. Familiarity with Interoperable C4I Services (ICS). Hands-on experience with Oracle 810g databases. Solid grounding in Solaris 10 and UNIX / HP-UX environments. Desirable or a willingness to learn: Microsoft Exchange 2003 Microsoft Server 2003 Active Directory VMWare v5 / v5.5 ITIL framework Not Sure You Meet Every Requirement? Applicants with transferable skills in messaging support or infrastructure roles are encouraged to apply. The organisation is committed to investing in its people and offers comprehensive training and professional development.