{"id":2010824,"url":"https://alion.io/job/londonstockexchange-offensive-security-engineer","title":"Offensive Security Engineer","company":{"id":44904,"name":"London Stock Exchange","domain":"londonstockexchange.com","url":"https://alion.io/company/londonstockexchange","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":{"grade":"A","score":100,"open_postings":16,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":59,"computed_at":"2026-10-21T05:46:15Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":64000,"max_usd":144000,"period":"year","method":"role_country_seniority_unknown","sample_n":148},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"MITRE ATT&CK","optional":false},{"name":"OWASP","optional":false},{"name":"Red Teaming","optional":false}],"status":"live","first_seen_at":"2026-05-27T00:08:38Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-21T22:40:53Z","board_verified":true,"closed_at":null,"days_open":147,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":147},"description":"Join our Offensive Security Operations team as an Offensive Security Engineer. 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You will also have the opportunity to explore and experiment with AI and automation to improve our security initiatives.\nMissions\nPlan and facilitate testing programs with third-party vendors, ensuring efficient execution of vulnerability discovery and offensive testing.\nProvide insight on root cause analysis and scalable risk management, working closely with technical teams and external stakeholders.\nStay ahead of emerging cyber security trends and share ideas for improvement, exploring the use of AI and automation in security initiatives.\nProfil recherché\n - Background in Red Teaming / Penetration Testing / Bug Bounty advantageous!- Technology related Bachelor's Degree or equivalent experience and certifications in cyber security\n- Experience building AI agentic workflows or deploying and managing security tooling is also advantageous!\n- Knowledge of security vulnerabilities and common software engineering flaws and Network Defence analytical models (Kill Chain, ATT&CK, OWASP top 10etc.)\n- Ability to work in a fast-paced environment as a problem solver and barrier breaker with initiative\n- Understanding of large scale enterprise IT system environments\n- Strong verbal & written communication skills & presentation skills","description_format":"text","description_chars":1613,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Penetration Testing"],"lifecycle":[{"event":"open","at":"2026-10-07T13:01:52Z"}],"visa":[],"liveness":{"score":13,"band":"cold","label":"Long shot","p_open":1,"p_active":0.48,"p_room":0.28,"age_days":147,"expected_fill_days":59,"reasons":["conf:1","velocity","win:tail","crowd:"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/londonstockexchange-offensive-security-engineer","json_url":"https://alion.io/job/londonstockexchange-offensive-security-engineer.json","meta":{"generated_at":"2026-10-21T23:08:18Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":32908,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":44904},"rest":"https://alion.io/mcp/rest/get_company?id=44904"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flondonstockexchange-offensive-security-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flondonstockexchange-offensive-security-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flondonstockexchange-offensive-security-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/londonstockexchange-offensive-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flondonstockexchange-offensive-security-engineer"}]}