{"id":1944164,"url":"https://alion.io/job/user-experience-researchers-senior-network-security-engineer","title":"Senior Network & Security Engineer","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":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":7000,"max":14000,"currency":"SGD","period":"month","gross":true,"usd_annual":131196},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AIOps","optional":false},{"name":"Anomaly Detection","optional":false},{"name":"Ansible","optional":true},{"name":"AWS","optional":true},{"name":"DHCP","optional":true},{"name":"DNS","optional":true},{"name":"Terraform","optional":true},{"name":"Wireshark","optional":true}],"status":"live","first_seen_at":"2026-10-06T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-06T00:00:00Z","board_verified":false,"closed_at":null,"days_open":20,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":20},"description":"We are seeking a highly skilled and motivated Senior Network & Security Engineer to join our Network Operations and Engineering team. The ideal candidate will play a key role in implementing and maintaining enterprise network infrastructure. The role involves working collaboratively with cross-functional teams to ensure the reliability, scalability, and security of the network.\nKey Responsibilities:\nBe part of a team responsible for Network Engineering, Operations & Deployment, supporting enterprise data centre, office, remote and public cloud network environments.\nThis is a technical hands-on role within the Network Services team as a Senior Network & Security Engineer.\nLead network deployment projects, ensuring timely and successful implementation of network solutions.\nWork closely with vendors and third-party providers for solution architecture, equipment procurement and installation.\nProvide Tier-3 support for network and security-related issues and participate in a rotating Network Operations on-call schedule, including weekends, supporting a multi-vendor enterprise network.\nCreate, maintain and review High Level Design, Low Level Design and operational practices across the teams.\nDrive network operations and day-to-day task efficiencies through automation.\nExperience in deploying and working with AI tools applied to network operations, including AIOps platforms, AI-assisted troubleshooting and anomaly detection.\nExperience in deploying and configuring AI integration solutions that enable large language models to interact with and query network infrastructure and operational data is highly desirable.\nPreferred Qualifications\nA bachelor's degree and 8–14 years of experience in core network technologies, including enterprise networking, firewalls, load balancing and web application security.\nDemonstrated experience in leading and managing complex network data centre or public cloud migration projects.\nProven ability to implement and oversee large-scale network deployments.\nOne or more of the following certifications: CCIE, CCNP, PCNSE, CCSE, AWS Certified Advanced Networking – Specialty or equivalent.\nStrong fundamental knowledge in LAN, WAN and network security technologies and products.\nExcellent project and vendor management skills.\nExcellent written and verbal communication skills with demonstrated ability to influence and communicate effectively with non-technical audiences and senior management.\nMandatory Skillsets\nExpertise in enterprise network infrastructure and Cisco ACI deployments.\nExpertise in application delivery network technologies, including load balancers and WAF solutions.\nExpertise in managing enterprise firewalls and intrusion prevention systems.\nGood-to-Have Skillsets\nExperience with proxy and CDN technologies.\nExperience managing IPAM, DNS and DHCP solutions.\nExperience managing network micro-segmentation and network security solutions.\nExperience managing enterprise voice and communication infrastructure.\nExperience with network monitoring and management platforms.\nExperience performing deep packet capture analysis using Wireshark or similar products.\nExperience in network automation using Ansible and Terraform.\nExperience managing network access control, identity-based network security and firewall policy management solutions.\nSkills\nThird Party Vendor Management, Certifications, CCIE, Cloud Migration, Network Operations, High Level Design, DNS Management, Enterprise Networking, Anomaly Detection, Network Service, Communication With Management, Network Administration and Maintenance, Large Scale Deployments, Project Management Professional, Network Security, 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