{"id":2010809,"url":"https://alion.io/job/londonstockexchange-principal-engineer-aws-java","title":"Principal Engineer (AWS & Java)","company":{"id":44904,"name":"Londonstockexchange","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":"B","score":75,"open_postings":17,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-09T06:01:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Nottingham, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":84000,"max_usd":168000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":41},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Incident Management","optional":false},{"name":"Java","optional":false}],"status":"live","first_seen_at":"2026-06-12T00:09:33Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-10T01:30:52Z","board_verified":true,"closed_at":null,"days_open":120,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":118},"description":"Join our team as a Principal Engineer, where you will be the senior hands-on technical expert for our Risk Screening platform. 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You will provide deep technical guidance, tackle complex challenges, and set the standard for quality and performance across all engineering teams.\nMissions\nAct as the senior-most technical authority for implementation within the Risk Screening platform, ensuring designs are realized accurately and pragmatically.\nLead the implementation of the most complex and business-critical changes, setting the standard for quality, performance, and maintainability.\nDrive solutions for cloud scaling and capacity management, ensuring the platform performs predictably under variable and peak loads.\nProfil recherché\n - Deep, hands-on expertise in Java (Java 11+ preferred), including JVM behaviour, concurrency, and performance optimisation- Strong understanding of production operations, including incident management, observability, and reliability engineering\n- Extensive experience as a Principal Engineer, or equivalent senior technical role on large-scale, production systems\n- Strong experience working with large databases or data platforms, including performance tuning and operational management\n- Proven ability to implement and operate distributed systems at scale, with particular emphasis on performance and scalability\n- Strong, practical experience building and running systems on AWS, with a focus on real-world operational trade-offs\n- Ability to influence and guide teams through technical credibility rather than formal authority","description_format":"text","description_chars":1868,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T13:01:52Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.299,"p_room":0.28,"age_days":119,"expected_fill_days":30,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-10-09T06:01:00Z"},"pay":null,"html_url":"https://alion.io/job/londonstockexchange-principal-engineer-aws-java","json_url":"https://alion.io/job/londonstockexchange-principal-engineer-aws-java.json","meta":{"generated_at":"2026-10-10T01:52:23Z","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","counted_by":"address","units_charged":1,"used_today":3341,"day_limit":5000,"remaining_today":1659,"minute_limit":60,"resets_at":"2026-10-11T00:00:00Z"}},"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-principal-engineer-aws-java"},{"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-principal-engineer-aws-java"},{"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-principal-engineer-aws-java"},{"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-principal-engineer-aws-java\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flondonstockexchange-principal-engineer-aws-java"}]}