{"id":1267384,"url":"https://alion.io/job/user-ict-infrastructure-engineer-cisco-aci-","title":"ICT Infrastructure Engineer (Cisco ACI )","company":{"id":245891,"name":"User Experience Researchers","domain":"user.com.sg","url":"https://alion.io/company/user-3","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":6000,"max":10000,"currency":"SGD","period":"month","gross":true,"usd_annual":93960},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"Python","optional":false},{"name":"App Center","optional":true},{"name":"Assembly","optional":true},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"BGP","optional":true},{"name":"DHCP","optional":true},{"name":"DNS","optional":true},{"name":"GCP","optional":true},{"name":"OSPF","optional":true},{"name":"Rest API","optional":true},{"name":"VPN","optional":true}],"status":"closed","first_seen_at":"2026-09-08T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-01T12:00:09Z","board_verified":false,"closed_at":"2026-10-01T12:00:09Z","days_open":23,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":23},"description":"Key Responsibilities:\nNetwork Transformation Architecture:\nLead the design, engineering, and execution of next-generation network transformation solutions.\nCollaborate with internal teams, including cloud, security, and application stakeholders, to align network infrastructure with business needs.\nProvide technical leadership in building highly resilient, scalable, and secure hybrid/multicloud network environments.\nDesign, Deployment, and Operations:\nArchitect and deploy advanced Cisco ACI infrastructure across active-active datacenters.\nIntegrate ACI with hybrid cloud and multicloud environments to ensure seamless connectivity and performance.\nManage day-to-day operations, monitoring, and troubleshooting of ACI fabric components.\nCollaborate with vendors, Cisco TAC, and internal teams to resolve complex network incidents and escalations.\nPolicy Management and Automation:\nDevelop and implement policy-driven network architectures using Cisco ACI's capabilities.\nUtilize automation tools (e.g., Ansible, Python) to streamline network operations and ensure efficiency.\nEnsure network policies align with industry best practices and compliance requirements.\nDocumentation and Governance:\nMaintain accurate network diagrams, policy documentation, and technical procedures.\nEnsure all infrastructure and operations meet internal governance and security standards.\nMentorship and Knowledge Sharing:\nProvide SME-level guidance to internal teams and mentor junior network engineers.\nLead knowledge transfer sessions to enhance team capabilities in ACI and related technologies.\nPreferred qualifications:\nA bachelor's or master's degree and 10-15 years of experience in core Network technologies with at least 5 years focused on Cisco ACI.\nDeep knowledge of Cisco ACI components and concepts, including:\nFabric Architecture: Spine-Leaf topology, Fabric Discovery, and Fabric Access Policies.\nApplication Policy Infrastructure Controller (APIC): Clustering, APIs (REST, XML, JSON), and GUI management.\nEndpoint Groups (EPGs), Contracts, and Filters: Policy-based connectivity and segmentation.\nTenant Model: VRFs, Bridge Domains, and Layer 2/3 connectivity across multiple tenants.\nACI Multi-Site and Multi-Pod deployments.\nIntegration with L4-L7 services (e.g., firewalls, load balancers) using Service Graphs.\nExpertise in ACI troubleshooting: Health Scores, Service Graphs, and CLI/APIC diagnostics.\nExperience with Cisco Nexus Dashboard Insight for monitoring and managing ACI environments effectively.\nVXLAN and EVPN Expertise:\nVXLAN Fabric Architecture: Understanding of VXLAN encapsulation for scalable Layer 2 and Layer 3 networks.\nMP-BGP EVPN (Ethernet VPN): Control plane for VXLAN, providing seamless Layer 2 extension and optimized Layer 3 routing.\nInteroperability between ACI and non-ACI environments using VXLAN/EVPN.\nBGP and OSPF Routing Expertise:\nIn-depth knowledge of BGP (Border Gateway Protocol) for managing external and internal routing policies.\nExperience with BGP peering, route filtering, and path selection in complex ACI and datacenter environments.\nExpertise in OSPF (Open Shortest Path First) for building dynamic Layer 3 routing in underlay networks.\nIntegration of BGP and OSPF within ACI fabric to manage hybrid cloud and multi-pod deployments.\nSolution Architect: (Preferrable)\nSolution-level understanding of Cisco ACI interoperability with:\nFirewalls (e.g., Palo Alto, Checkpoint , Fortinet).\nLoad Balancers (e.g., F5 GTM, LTM, ASM).\nMicro-Segmentation solutions and policy enforcement.\nIPAM, DNS, and DHCP systems.\nAdded advantage for candidates with hands-on experience integrating ACI with these solutions, though a willingness to learn and adapt to new technologies is acceptable.\nExperience with Ansible, Python scripting, and ACI REST APIs for automation.\nKnowledge of ACI App Center integrations and customization of ACI apps.\nExperience with integrating ACI with multicloud environments (AWS, Azure, GCP).\nSoft Skills:\nExcellent analytical, problem-solving, and decision-making skills.\nStrong communication and collaboration skills, with the ability to engage with stakeholders across departments\nSelf-motivated with a continuous learning mindset and ability to work under pressure.\nMandatory Skillsets\nSkills\nTenant Coordination, Network Implementation, Spine, Operations, Cisco Technologies, Diagnostic Tools, Filter technology, Fabric Development, Infrastructure Migrations, Service Integration, Policy Management, Technical Leadership, Clustering, Large Scale Deployments, Collaborate With Internal Team, Hybrid Cloud","description_format":"text","description_chars":4569,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Continuous learning"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Smart 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