{"id":2378369,"url":"https://alion.io/job/caci-technology-department-infrastructure-cloud-security-engineer","title":"Technology Department - Infrastructure, Cloud & Security Engineer","company":{"id":1760862,"name":"CACI","domain":"caci.co.uk","url":"https://alion.io/company/caci-co-uk","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Dayforce","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Security","role_family":"Security","seniority":"junior","employment_type":null,"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":47000,"max_usd":94000,"period":"year","method":"role_seniority_country_cell","sample_n":9},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"AWS","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"ISO 27001","optional":false},{"name":"Linux","optional":false},{"name":"TCP/IP","optional":false},{"name":"Windows Server","optional":false},{"name":"Azure","optional":true},{"name":"Bash","optional":true},{"name":"PowerShell","optional":true},{"name":"Python","optional":true},{"name":"VPN","optional":true}],"status":"live","first_seen_at":"2026-08-12T00:00:00Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-13T16:33:49Z","board_verified":true,"closed_at":null,"days_open":62,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":62},"description":"About the Role\nWe're looking for a Junior Infrastructure, Cloud & Security Engineer to join our Infrastructure, Cloud & Security team within CACI's central Technology function.\nThis is an excellent opportunity for someone early in their IT career who is passionate about cloud technologies, networking and cybersecurity. You'll work alongside experienced engineers, supporting and securing enterprise infrastructure across cloud, network and on-premises environments while developing your skills in AWS, Linux, networking and security technologies.\n\nWhat You'll Be Doing\nYou'll support the delivery, maintenance and security of CACI's infrastructure services, including:\nAssisting with the administration and monitoring of AWS cloud environments\nSupporting network infrastructure across Cisco and Meraki platforms\nHelping manage firewalls, VPNs and network security controls\nSupporting Linux server administration, patching and monitoring\nAssisting with incident investigation and infrastructure troubleshooting\nContributing to vulnerability management and security improvement initiatives\nSupporting ISO27001 compliance activities and security best practices\nProducing technical documentation and operational procedures\nContributing to infrastructure upgrades and technology projects\n\nWhat We're Looking For\nEssential Skills & Knowledge\nUnderstanding of TCP/IP networking fundamentals\nKnowledge of routing, switching, VLANs, DNS and DHCP\nBasic understanding of firewalls, VPNs and network security principles\nFamiliarity with Linux operating systems\nUnderstanding of Windows Server and Active Directory fundamentals\nAwareness of AWS and cloud computing concepts\nUnderstanding of common cybersecurity threats and security best practices\nStrong troubleshooting and analytical skills\nExcellent communication and teamwork skills\nA proactive attitude and enthusiasm for learning\n\nExperience\nWe welcome experience gained through employment, apprenticeships, education, home labs or personal projects in areas such as:\nNetworking\nLinux administration\nCloud technologies\nInfrastructure support\nCybersecurity\n\nDesirable Skills\nExperience or exposure to any of the following would be advantageous:\nCisco networking equipment\nCheck Point firewalls\nAWS or Azure cloud services\nVPN technologies\nWeb Application Firewalls (WAF)\nISO27001 environments\nScripting and automation (Bash, Python or PowerShell)\nMonitoring and security tools\nInfrastructure-as-Code concepts\n\nRelevant Certifications\nWe're interested in candidates working towards or holding certifications such as:\nCompTIA Network+\nCompTIA Security+\nAWS Certified Cloud Practitioner\nAWS Solutions Architect Associate\nCisco CCNA\nLinux Essentials / LPIC-1\nMicrosoft Azure Fundamentals (AZ-900)\n\nWhy Join Us?\nAt CACI, you'll have the opportunity to learn from experienced specialists, work with modern cloud and security technologies, and develop your career within a collaborative and innovative technology team.\nIf you're passionate about infrastructure, cloud and cybersecurity and are looking for your next challenge, we'd love to hear from you.\n\nEqual Opportunities:\n\nCACI is proud to be an equal opportunities employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favourably due to ethnic origin, age, sex, gender identity, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent discrimination.\n\nAs a Disability Confident employer, we will;\nProvide reasonable adjustments in the recruitment process where requested (contact a member of the recruitment team on 020 7602 6000 to discuss individual requirements further).\nOffer people with health conditions and disabilities, meeting the minimum criteria for a role, an interview.\nOur people are unique and we encourage, and support them, to be confident in contributing to our inclusion journey.","description_format":"text","description_chars":3960,"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":["Design & Creative","Professional Services","Sales & Marketing","Information Security"],"lifecycle":[{"event":"open","at":"2026-10-12T18:59:13Z"}],"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":"2026-10-13T06:20:30+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.308,"p_room":0.28,"age_days":62,"expected_fill_days":17,"reasons":["conf:0","win:tail","crowd:junior"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/caci-technology-department-infrastructure-cloud-security-engineer","json_url":"https://alion.io/job/caci-technology-department-infrastructure-cloud-security-engineer.json","meta":{"generated_at":"2026-10-13T18:51:08Z","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":"assistant_verified","counted_by":"address","units_charged":1,"used_today":3723,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":1760862},"rest":"https://alion.io/mcp/rest/get_company?id=1760862"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcaci-technology-department-infrastructure-cloud-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%2Fcaci-technology-department-infrastructure-cloud-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%2Fcaci-technology-department-infrastructure-cloud-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/caci-technology-department-infrastructure-cloud-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcaci-technology-department-infrastructure-cloud-security-engineer"}]}