{"id":4074698,"url":"https://alion.io/job/keyloop-senior-windows-infrastructure-design-engineer-l3l3-5","title":"Senior Windows Infrastructure Design Engineer (L3/L3.5)","company":{"id":7846,"name":"Keyloop","domain":"keyloop.com","url":"https://alion.io/company/keyloop","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":92,"open_postings":15,"ghost_share":0,"stale_share":0.333,"repost_share":0,"time_to_fill_p50_days":58,"computed_at":"2026-11-11T05:49:22Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Hyderabad, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Configuration Management","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"LDAP","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"PowerShell","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Ansible","optional":true},{"name":"CyberArk","optional":true},{"name":"Delinea","optional":true},{"name":"Grafana","optional":true},{"name":"PKI","optional":true},{"name":"Prometheus","optional":true},{"name":"VMWare","optional":true}],"status":"live","first_seen_at":"2026-11-11T10:22:26Z","employer_posted_date":"2026-11-11","last_verified_at":"2026-11-11T14:59:04Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About the Role\nWe are seeking an experienced Windows Infrastructure Design Engineer to join our Infrastructure Engineering team. This role is responsible forthe architecture, engineering, governanceand highest-level technical support (L3/L3.5) of the organisation's Windows Server, Active Directory and identity infrastructure across datacentre, cloudand hybrid environments.\nThe successful candidate will be a senior technical authority for Microsoft server and identity technologies, providing design leadership, operational governanceand engineering expertise. The role combines deep Windows and Active Directory knowledge with experience of Privileged Access Management (PAM), automationand modern infrastructure management practices.\nThe engineer will play a key role in modernising infrastructure services, improving security posture, driving automationand supporting large-scale transformation initiatives across the enterprise estate.\nKey Responsibilities\nDesign, implement and maintainenterprise Windows Server infrastructure and associated platform services.\n\nOwn the architecture and governance of Active Directory Domain Services (AD DS), including domain, forest, trustand replication design.\n\nDesign and support Microsoft DNS services hosted on domain controllers and integrated with Active Directory.\n\nDefine and maintainstandards, reference architectures and operational processes for Windows and identity services.\n\nAct as the L3/L3.5 escalation point for complex Windows, Active Directoryand authentication-related issues.\n\nDesign and support enterprise identity and access management solutions, including integration with PAM platforms.\n\nDevelop and implement security hardening standards in line with industry best practices.\n\nCollaborate with security, networking, cloudand application teams to deliver resilient and secure infrastructure services.\n\nDesign and implement automation solutions using scripting, Infrastructure as Code and API-driven management.\n\nLeverage AI-assisted tooling to improve operational efficiency, troubleshooting, reportingand knowledge management.\n\nProvide technical leadership for infrastructure transformation, cloud migrationand service modernisation programmes.\n\nRequired Experience\nExtensive experience designing and supporting Microsoft Windows Server environments.\n\nStrong expertisein Active Directory Domain Services, including:\n\nForest and domain design\n\nGroup Policy\n\nSites and services\n\nDNS integration\n\nTrust relationships\n\nReplication\n\nAuthentication services\n\nStrong understanding of Microsoft DNS, DHCP and certificate services.\n\nExperience supporting hybrid identity environments incorporating Active Directory and Microsoft Entra ID.\n\nExperience with Privileged Access Management (PAM) solutions and privileged account controls.\n\nStrong understanding of authentication technologies including Kerberos, LDAP, NTLM and modern identity protocols.\n\nExperience with Windows security hardening and vulnerability remediation.\n\nExperience with PowerShell automation and configuration management.\n\nStrong troubleshooting and root-cause analysis capability across complex enterprise environments.\n\nExperience supporting highly availableand business-critical infrastructure services.\n\nDesirable Experience\nCyberArk, Delinea, BeyondTrustor similar PAM platforms.\n\nMicrosoft Entra ID, Entra Connect and hybrid identity architectures.\n\nWindows Failover Clustering.\n\nRemote Desktop Services (RDS).\n\nMicrosoft PKI and certificate lifecycle management.\n\nVMware, Nutanix or cloud-hosted Windows environments.\n\nConfiguration management platforms such as Ansible, DSCor SCCM.\n\nMonitoring platforms such as SolarWinds, SCOM, Grafana or Prometheus.\n\nExperience applying AI technologies to infrastructure operations and service management.\n\nKey Attributes\nDeep technical expertisein Windows and identity technologies.\n\nStrong designand architecture capability.\n\nSecurity-first mindset.\n\nExcellent problem-solving and troubleshooting skills.\n\nAutomation-oriented approach to service management.\n\nStrong documentation and governance discipline.\n\nAbility to lead technical standards and engineering best practices.\n\nStrong communicationand stakeholder management skills.\n\nSuccess Measures\nAvailability and resilience of Windows and Active Directory services.\n\nSecurity and compliance of identity infrastructure.\n\nReduction in operational effort through automation.\n\nSuccessful delivery of infrastructure transformation initiatives.\n\nQuality of technical standards, documentationand governance.\n\nReduction in recurring incidents and identity-related operational risks.\n\nThis role providesthe opportunity to own and evolve the core Windows and identity platforms that underpin a global enterprise environment, combining deep technical engineering with modern automation, securityand privileged access management practices.","description_format":"text","description_chars":4860,"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":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Automotive Software"],"lifecycle":[{"event":"open","at":"2026-11-11T14:59:04Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring 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