{"id":3558079,"url":"https://alion.io/job/isembard-security-controller","title":"Security Controller","company":{"id":3780450,"name":"Isembard","domain":"isembard.com","url":"https://alion.io/company/isembard","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Finance","role_family":"Finance","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":46000,"max_usd":108000,"period":"year","method":"role_country_seniority_unknown","sample_n":588},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-29T14:55:51Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-04T06:14:30Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"About Isembard\nIsembard is building a network of high-performance factories for critical industries. We combine advanced machine tools, robotics and our own software, MasonOS, to make precision components for aerospace, defence, energy and frontier technology companies, with factories across the UK, US, Germany and France. Our mission is to forge industrial acceleration.\nThe role\nIsembard makes parts for aerospace and defence customers who expect their suppliers to protect people, sites and information to government standards.\nThe Security Controller owns personnel and physical security for our London factory in Southwark, sets our vetting policy, and builds the security arrangements our defence work requires. You will also give practical, remote support to other sites in our network.\nWhat you'll do\nOwn physical security at our Southwark site, including access, visitors and secure areas.\n\nSet and run our personnel vetting policy, including Baseline Personnel Security Standard (BPSS) checks for new starters.\n\nAct as the company's point of contact for UK government security requirements, including national security vetting and facility security, as our defence work requires.\n\nAdvise other sites in the network on security arrangements.\n\nKeep security policies and records current and audit-ready, and make sure people understand their responsibilities.\n\nWork closely with Legal, IT, cyber-security and export control.\n\nWhat we're looking for\nExperience in a security role at a UK defence supplier, or an equivalent government or military security background.\n\nWorking knowledge of UK personnel security, including BPSS and national security vetting.\n\nExperience managing physical security for a site.\n\nFamiliarity with UK government security requirements for defence suppliers.\n\nDiscretion, sound judgement and clear communication.\n\nA practical approach: security that works in a busy factory, not only on paper.\n\nNice to have\nExperience setting up facility security arrangements for defence work.\n\nSecurity across several sites.\n\nA manufacturing environment.\n\nWhy Isembard\nOwn a function at an early stage, with a direct effect on the defence work Isembard can take on.\n\nWork across Legal, IT and operations in a growing manufacturing business.\n\nLocation: On-site at our Southwark factory in 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