{"id":168120,"url":"https://alion.io/job/ringcentral-network-engineer-linux-administrator","title":"Network Engineer / Linux Administrator","company":{"id":58779,"name":"RingCentral","domain":"ringcentral.com","url":"https://alion.io/company/ringcentral","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":15,"ghost_share":0,"stale_share":0.8,"repost_share":0,"time_to_fill_p50_days":34,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Networking","role_family":"Networking","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":26000,"max_usd":77000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":285},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"AWX","optional":false},{"name":"Bash","optional":false},{"name":"BGP","optional":false},{"name":"CI/CD","optional":false},{"name":"Configuration Management","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"GitLab CI","optional":false},{"name":"Grafana","optional":false},{"name":"HAProxy","optional":false},{"name":"LDAP","optional":false},{"name":"Linux","optional":false},{"name":"OSPF","optional":false},{"name":"Python","optional":false},{"name":"Service Desk","optional":false},{"name":"Terraform","optional":false},{"name":"Unix","optional":false},{"name":"VLAN","optional":false},{"name":"VPN","optional":false},{"name":"Wi-Fi","optional":false},{"name":"Zabbix","optional":false},{"name":"Azure","optional":true},{"name":"GCP","optional":true},{"name":"Kubernetes","optional":true},{"name":"MPLS","optional":true},{"name":"Zscaler","optional":true}],"status":"live","first_seen_at":"2026-08-26T00:00:00Z","employer_posted_date":"2026-09-18","last_verified_at":"2026-10-15T12:20:22Z","board_verified":true,"closed_at":null,"days_open":51,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":51},"description":"Say hello to opportunities.\nIf you’re looking to be part of what’s next in communication, you’re in the right place.\nAt RingCentral, we believe the best customer experiences happen when humans and AI work together. Our agentic voice AI portfolio-AIR, AVA, and ACE-brings together automation, assistance, and insights across the entire conversation lifecycle. The result? More seamless, intelligent experiences for businesses everywhere.\nWith $2.5B+ in ARR and $250M invested in R&D annually, we’re building the future of AI-powered business communications.\nCurrently we're looking for a network and infrastructure engineer to support EMEA IT network and infrastructure (mostly Linux-based), office interconnectivity, VPN solutions, and server room operations across our offices.\nThis role requires on-site presence at our office 4 days a week to support effective collaboration and teamwork.\nWHO WE'RE LOOKING FOR\nAn experienced, responsible engineer who stays calm under pressure and doesn't shy away from complex problems. Someone who keeps up with the industry, is genuinely curious about new technologies, and brings that curiosity into their daily work. A team player who contributes to shared goals, takes ownership of driving problems toward resolution and engages the right people when needed, and sees every incident through to full resolution - not just mitigation.\nWHAT YOU'LL DO\nOffice network support - Maintain and support the network infrastructure of the office, its connectivity to other offices, and plan and build network infrastructure when offices expand.\nVPN support - Configure, maintain, and support VPN solutions for site-to-site connectivity and remote employee access.\nLinux infrastructure management - Own the Linux system lifecycle across office infrastructure: provisioning, configuration management, security hardening, and day-to-day troubleshooting. Maintain and support virtualisation and container host environments running on RHEL-based systems.\nServer room operations - Work hands-on in the server room: manage and maintain physical infrastructure including structured cabling (SCS), UPS systems, and rack equipment. Ensure physical layer reliability and documentation.\nNetwork upgrades and testing - Plan and execute network upgrades, perform testing to validate reliability and performance before and after changes.\nUser support via service desk - Handle network-related requests and incidents within the company's service desk platform, providing timely resolution for end users.\nMonitoring and incident response - Oversee monitoring and alerting systems to detect and resolve incidents, identify potential issues proactively, and implement preventive measures.\nOn-call duty - Participate in on-call rotation to ensure coverage for critical incidents outside regular business hours\nCollaboration - Work closely with NetOps team colleagues to jointly deliver network connectivity solutions, share knowledge, and drive incidents through to full resolution.\nDocumentation - Maintain accurate and up-to-date documentation of network topology, configurations, procedures, and changes.\nAutomation - Automate routine tasks using scripting, infrastructure-as-code tools, and AI-assisted tooling to reduce manual effort and improve consistency.\nKey requirements\n3+ years of hands-on networking experience.\nMust Have\nSwitching & routing\nEthernet, 802.1q (VLAN tagging)\n\nxSTP (STP/RSTP/MSTP), LACP\n\n802.1x (port-based network access control / NAC)\n\nOSPF, static routing\n\nVPN & tunneling\nIPsec: route-based and policy-based\n\nSSL VPN, OpenVPN - deployment and support\n\nNetwork services\nDHCP, DNS, NTP, NAT\n\nAAA: RADIUS, TACACS+, LDAP\n\nIPAM (IP Address Management) - maintaining and operating IP address space\n\nFirewall & perimeter security\nStateful and NGFW: Fortinet, Juniper SRX or Cisco equivalent\n\nHost-based: iptables, firewalld\n\nSwitching platforms\nJuniper EX or Cisco Catalyst - access/campus switching\n\nExperience with enterprise-grade switching platforms required\n\nLinux / Unix administration\nRHEL-based OS at advanced level - administration, troubleshooting, scripting\n\nServer infrastructure: bare metal, virtualisation (hypervisor), containers\n\nMonitoring\nZabbix, Grafana - dashboards, alerting, threshold configuration\n\nNetflow / IPFIX / sFlow - traffic flow analysis\n\nAI Tools\nFamiliarity with modern AI tools, with practical experience using them to improve efficiency and automate routine tasks\n\nLanguage\nFluency in English language\n\nShould Have\nRouting - advanced\nBGP: unicast, route reflection, policy, prefix filtering\n\nSecurity platforms\nJuniper SRX - hands-on configuration and troubleshooting preferred\n\nCloud networking\nAWS networking: VPC, Transit Gateway, Security Groups, Route Tables\n\nLoad balancing & DNS: AWS Route 53, HAProxy\n\nWi-Fi\n802.11 (a/b/g/n/ac/ax) - configuration and troubleshooting\n\nSD-WAN\nUnderstanding of SD-WAN concepts: centralised policy, underlay/overlay separation, application-aware routing\n\nPhysical infrastructure\nStructured cabling (SCS) - installation, patching, documentation\n\nUPS systems - basic operation, monitoring, maintenance\n\nRack and server room equipment handling\n\nAutomation\nScripting and automation: Bash, Python\n\nInfrastructure-as-code: Ansible / AWX, Terraform\n\nCI/CD: GitLab CI\n\nHigh availability & architecture\nHA design patterns, clustering\n\nBoth greenfield and brownfield deployment experience\n\nNice to Have\nMC-LAG / ESI LAG (multi-chassis link aggregation)\n\nBGP L3VPN\n\nMPLS (transport and services)\n\nSD-WAN platforms: Cato Networks, Zscaler\n\nWi-Fi management platforms: Juniper Mist, Ruckus, Aruba\n\nMikroTik - RouterOS configuration and troubleshooting\n\nLogging and log management: ELK stack\n\nCloud networking: Azure, GCP\n\nNetworking in Kubernetes\n\nCCNA, JNCIA or equivalent certification\n\nWhat we offer:\nWell-coordinated professional team.\n\nCutting edge technologies, interesting and challenging tasks, dynamic project, great opportunities for self-realization, professional and career growth.\n\nAdditional Health and Life Insurance Package.\n\nEmployee Assistance Program.\n\n25 vacation days.\n\n102,26 EUR/200 BGN Digital Food Vouchers via EdenRed and their application\n\n61,36 EUR/120 BGN Gross as part of the salary for Working Expenses Allowance\n\nAbout RingCentral\nRingCentral is a global leader in agentic voice AI-powered business communications, delivering an integrated platform for business phone, SMS, contact center, workforce engagement management, video collaboration, and messaging. As the communications layer connecting businesses and customers, RingCentral is the front door of business communication and is in the advantageous position to apply AI at every phase of the conversation journey - before, during, and after each interaction. Our agentic AI portfolio includes autonomous voice-first AI agents that automate calls, assist in the moment, and analyze every interaction - enabling businesses to work smarter, respond faster, and connect more meaningfully with their customers. Visit ringcentral.com to learn more.\nRingCentral is an equal opportunity employer that truly values diversity. 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