{"id":198852,"url":"https://alion.io/job/crowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london","title":"Sr. Network Engineer - Data Center and Cloud (Hybrid, London)","company":{"id":2153,"name":"CrowdStrike","domain":"crowdstrike.com","url":"https://alion.io/company/crowdstrike","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":94,"open_postings":31,"ghost_share":0.032,"stale_share":0.161,"repost_share":0.032,"time_to_fill_p50_days":35,"computed_at":"2026-10-27T05:46:45Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","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":71000,"max_usd":126000,"period":"year","method":"role_seniority_country_cell","sample_n":10},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"BGP","optional":false},{"name":"Chef","optional":false},{"name":"CI/CD","optional":false},{"name":"Crowdstrike","optional":false},{"name":"GDPR","optional":false},{"name":"ISO 27001","optional":false},{"name":"MPLS","optional":false},{"name":"OSPF","optional":false},{"name":"PCI DSS","optional":false},{"name":"Python","optional":false},{"name":"Terraform","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"GCP","optional":true},{"name":"InfiniBand","optional":true},{"name":"OpenStack","optional":true}],"status":"live","first_seen_at":"2026-09-03T00:00:00Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-10-27T03:56:53Z","board_verified":true,"closed_at":null,"days_open":55,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":55},"description":"As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn’t changed - we’re here to stop breaches, and we’ve redefined modern security with the world’s most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. We're proud to work for a mission-driven company leveraging AI to transform the way we work. CrowdStrikers drive their careers through flexibility and autonomy while also being expected to contribute to a culture of responsible AI adoption, experimentation, and innovation. We use an AI-first mindset as a force multiplier to proactively and continuously accelerate execution, build expertise, uncover insights, and solve complex problems. We’re always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.\nAbout the Role:\nCrowdStrike is seeking a Senior Network Engineer to join our Data Center & Cloud Network Engineering team. You will be responsible for the design, implementation, and operation of CrowdStrike's global cloud and data center network infrastructure.\nWhat You'll Do:\nTranslate business requirements into practical network design, reference architectures, design patterns, HLDs, design reviews, runbooks, POCs, FOAs\nDesign, operate, & implement global multi-vendor, multi-cloud, hybrid data center networks at scale while driving network performance & resiliency\nDeploy and manage cloud constructs such as subnet allocations, routing-tables/associations, VPCs, VPC-peering/PrivateLink, Hub-spoke topologies, gateways, direct connects\nDevelop and maintain IaC (ansible, Terraform) and automation tooling throughout CI/CD pipeline (Python, Go) to provision networks at scale, while improving the efficiency and velocity of network deployments\nTroubleshoot complex production issues and contribute to incident root-cause analysis\nParticipate in on-call rotations\nImplement network solutions meeting regional compliance and data sovereignty requirements (ISO 27001, Cyber Essentials Plus, UK G-Cloud, EU data residency / GDPR, PCI-DSS)\nWhat You Need:\nProven track record in driving agile cross-functional projects to completion independently with minimal supervision\n7+ years expert design & hands-on experience of IPv4/IPv6, Anycast, MP-BGP, OSPF/IS-IS, MPLS, EVPN/VxLAN, L3VPN, CLOS, QoS, Load-balancing, MACsec, and IPsec\n5+ years practical multi-cloud networking experience deploying and supporting cloud connectivity at hyperscaler, CSP or security company\nExtensive experience in deploying and maintaining large networks using version control, automation frameworks (ansible, Terraform, Chef) and scripts & templating (bash, python, go, jinja, YAML, JSON)\nProven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.\nBonus Points:\nCCIE/JNCIE, AWS/GCP/OCI/Azure (Professional) Certifications\nHyperscaler/CSP background (AWS, GCP, MSFT, OCI or similar) \nOpenStack / SONiC / Whitebox, FRR, open source network infrastructure experience\nAI/GPU cluster networking fabrics (RDMA, RoCE, InfiniBand)\nUK Government, G-Cloud, or Sovereign cloud experience\nBenefits of Working at CrowdStrike:\nMarket leader in compensation and equity awards\nComprehensive physical and mental wellness programs\nCompetitive vacation and holidays for recharge\nPaid parental and adoption leaves\nProfessional development opportunities for all employees regardless of level or role\nEmployee Networks, geographic neighborhood groups, and volunteer opportunities to build connections\nVibrant office culture with world class amenities\nGreat Place to Work Certified™ across the globe \nCrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program.\nCrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race, color, creed, ethnicity, religion, sex (including pregnancy or pregnancy-related medical conditions), sexual orientation, gender identity, marital or family status, veteran status, age, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition, genetic information, membership or activity in a local human rights commission, status with regard to public assistance, or any other characteristic protected by law. We base all employment decisions--including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay-offs, return from lay-off, terminations and social/recreational programs--on valid job requirements.\nIf you need assistance accessing or reviewing the information on this website or need help submitting an application for employment or requesting an accommodation, please contact us at  for further assistance.","description_format":"text","description_chars":5568,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Professional development","Wellness"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Threat Intelligence","Endpoint Security","Security Operations"],"lifecycle":[{"event":"open","at":"2026-09-04T00:03:52Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; Skilled Worker","cap_exempt":false,"checked_at":"2026-10-27T06:21:15+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.762,"p_room":0.45,"age_days":54,"expected_fill_days":35,"reasons":["conf:1","velocity","win:tail","comp:brand"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/crowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london","json_url":"https://alion.io/job/crowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london.json","meta":{"generated_at":"2026-10-28T01:43:08Z","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":2263,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"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":2153},"rest":"https://alion.io/mcp/rest/get_company?id=2153"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcrowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london"},{"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%2Fcrowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london"},{"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%2Fcrowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london"},{"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/crowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcrowdstrike-sr-network-engineer-data-center-and-cloud-hybrid-london"}]}