{"id":2924130,"url":"https://alion.io/job/datamatics-technologies-network-specialist-datamatics-technologies-3","title":"Network Specialist - Datamatics Technologies","company":{"id":4413925,"name":"Datamatics Technologies","domain":"datamaticstechnologies.com","url":"https://alion.io/company/datamaticstechnologies","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JazzHR","truth_index":null},"role":"Networking","role_family":"Networking","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mumbai, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"VPN","optional":false},{"name":"Azure","optional":true},{"name":"GCP","optional":true},{"name":"VLAN","optional":true},{"name":"Wi-Fi","optional":true}],"status":"closed","first_seen_at":"2026-10-20T13:00:36Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-21T14:17:33Z","board_verified":false,"closed_at":"2026-10-21T14:17:33Z","days_open":1,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":1},"description":"Position Name: Network Specialist\n Employment Type: Contractor (Extendable Based on Performance)\nExperience Required: 3-5 Years\n Joining Preference: Immediate joiners will be given preference and facilitated for expedited onboarding.\nPosition Summary\nWe are seeking a skilled Network Specialist with hands-on experience in network security implementation, segmentation, VPN technologies, and network access control. The ideal candidate will be responsible for assessing network exposure, implementing secure network boundaries, enforcing segmentation policies, and validating that approved traffic flows operate as intended. The role requires practical experience with ADVPN and Aruba ClearPass, as well as the ability to work across on-premises and hybrid cloud environments to strengthen network security and reduce the organization's attack surface.\nKey Responsibilities\nAssess network exposure and identify traffic dependencies across sites, server environments, cloud platforms, guest networks, and vendor access networks.\nDefine and document approved network boundaries for inter-site, server, cloud, guest, and vendor connectivity.\nDesign and implement network segmentation controls to enforce approved traffic flows.\nRestrict inter-site connectivity and control ADVPN shortcut paths where required.\nImplement and maintain separation between production and non-production environments.\nEnforce security policies using firewalls, VPNs, Network Access Control (NAC) solutions, and host-based controls.\nDevelop and maintain east-west traffic flow matrices and segmentation policies.\nImplement server farm micro-segmentation and secure server network architectures.\nEstablish segregated access for guests, contractors, and third-party vendors.\nConfigure and enforce device posture assessment and compliance validation controls.\nReview and remove unnecessary routing paths, firewall rules, and network access permissions.\nEstablish owner-based reviews for firewall rules and network access controls.\nAddress exposed test and non-production environments in collaboration with application and cloud owners.\nValidate approved business traffic while verifying that unauthorized network paths are blocked.\nPerform connectivity validation across sites and vessels where required.\nMaintain network security policies, configurations, implementation records, and testing evidence.\nSupport attack surface monitoring activities and contribute to major network redesign initiatives.\nMust-Have Skills\n3-5 years of hands-on experience implementing network security technologies in enterprise environments.\nHands-on experience with ADVPN (Adaptive Dynamic VPN) implementation, administration, and troubleshooting.\nHands-on experience with Aruba ClearPass deployment, policy management, and administration.\nStrong experience implementing and managing firewall security policies and Access Control Lists (ACLs).\nProven experience configuring and supporting VPN solutions.\nHands-on experience with Network Access Control (NAC) technologies.\nDemonstrated experience implementing network segmentation and enforcing traffic restrictions.\nExperience working with hybrid connectivity environments.\nExperience validating production traffic and security controls after implementation.\nAbility to troubleshoot and resolve network security issues in production environments.\nExperience testing and proving policy enforcement through controlled validation exercises.\nGood-to-Have Skills\nVLAN design, migration, and segmentation.\nServer network design and security architecture.\nWi-Fi security implementation and management.\nVPN posture assessment and endpoint compliance validation.\nInternal segmentation projects and east-west traffic control.\nServer farm micro-segmentation.\nGuest wireless network isolation.\nVendor and contractor access management.\nSegregated vendor VPN environments.\nDevice posture checking and compliance enforcement.\nNon-production environment isolation and security controls.\nAzure networking and cloud boundary security.\nGoogle Cloud networking and cloud boundary security.\nCross-cloud connectivity governance and traffic restriction.\nRouting optimization and network path analysis.\nFirewall rule optimization and cleanup initiatives.\nTraffic dependency analysis and flow mapping.\nSite and vessel connectivity validation.\nSecurity documentation, testing evidence, and compliance reporting.\nAttack surface monitoring and reduction initiatives.\nExperience participating in large-scale network transformation or redesign programs.\nRelevant firewall, VPN, NAC, Aruba, or network security certifications.","description_format":"text","description_chars":4598,"description_truncated":false,"requirements":{"experience_years_min":3,"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":["Data & Analytics","Information Technology","IT Staffing & Staff Augmentation","Analytics & BI 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