Montash

Job Title - Platform Engineer (SC Cleared) Contract - Inside IR35 Hybrid - Travel required during initial knowledge transfer Security Clearance - Must be holding active Security Clearance We are supporting a large, mission-critical public-sector system and are building a platform engineering team to maintain and evolve a complex Legacy technology environment. This role suits experienced engineers who are comfortable owning systems, providing L3 support, and mentoring others, rather than greenfield delivery. Key Responsibilities Support and maintain Legacy applications and infrastructure (L3 support) Deliver changes within a complex Legacy estate Own systems and services as a technical subject matter expert Build and support CI/CD pipelines Maintain documentation and undertake peer reviews Mentor junior engineers and support team delivery Stakeholder management, technical decision making, and line management. Essential Technical Skills Legacy systems support and modernisation CI/CD pipelines and automation Refactoring and automated testing ETL and data integration Containerisation and virtualisation Technologies: Nginx, Apache HTTP/Tomcat Oracle 11, RAC, RMAN, Partitioning, PL/SQL Oracle Solaris 10 Red Hat Enterprise Linux 8 Windows Server 2008/2016/2019 VMware ESX v6 Docker IBM Initiate (MDM) Desirable Skills Elasticsearch Java (SE 8, EE 5/6/11, EJB, JSP) GIS technologies (OpenLayers, MapServer, Tile Cache) Basic Python for Legacy system maintenance