{"id":3643519,"url":"https://alion.io/job/creative-sourcing-senior-isp-core-network-engineer","title":"Senior ISP Core Network Engineer","company":{"id":3310212,"name":"Creative Sourcing","domain":"creativesourcing.com.hk","url":"https://alion.io/company/creativesourcing","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Networking","role_family":"Networking","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":["South Africa"],"countries":["ZA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"Grafana","optional":false},{"name":"Linux","optional":false},{"name":"MPLS","optional":false},{"name":"Prometheus","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-10-31T10:01:03Z","employer_posted_date":null,"last_verified_at":"2026-10-31T10:01:03Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":4},"description":"Introduction\nWe are seeking a highly experienced Senior ISP Core Network Engineer with a minimum of 10 years of hands-on technical expertise to manage and optimize our core routing architecture. You will be responsible for public and private peering operations, regional regulatory/registry compliance, Broadband Network Gateway (BNG) management, capacity planning across IP Transit (IPT) and Internet Exchange Points (IXPs), and complex escalation handling. Additionally, strong operational expertise in Linux-based Open-Source Support Systems (OSS) is required to support core automation and network monitoring infrastructure.\n\nDuties & Responsibilities\nPeering & Transit Operations:\n\n Manage end-to-end public peering at major IXPs and establish bilateral private peering agreements.\n\n Monitor, engineer, and optimize traffic paths across IP Transit (IPT) and IXP sessions to minimize latency and transit costs.\n\n Handle Tier-3/4 customer, peering, and upstream capacity escalations promptly.\n\nRegulatory, Registry & Routing Security:\n\n Maintain and update regional internet registry data (AFRINIC) including IP allocation, ASN management, and WHOIS records.\n\n Ensure full compliance with ISPA guidelines and local regulatory frameworks.\n\n Manage Internet Routing Registry (IRR) objects, maintain accurate RPSL, and implement RPKI ROAs to maintain strict routing hygiene.\n\nCore Infrastructure & BNG Management:\n\n Configure, scale, and maintain Broadband Network Gateways (BNGs/BRAS) for subscriber management and session termination.\n\n Conduct continuous capacity management, forecasting bandwidth requirements, and upgrading IPT/IXP interconnects before saturation occurs.\n\nOSS & Linux Infrastructure Support:\n\n Maintain, support, and customize Linux-based OSS tools (e.g., netflow collectors, syslog servers, monitoring stacks like Prometheus/Grafana, or custom network automation scripts).\n\n Develop lightweight Linux/Python tools and scripts to automate registry updates, session monitoring, and operational workflows.\n\nDesired Experience & Qualification\nMinimum 10 years of direct experience working in an ISP or Large Enterprise Service Provider environment.\n\nRouting & Peering Depth:\n\n Master-level understanding of BGP, MP-BGP, ISIS, MPLS/SRv6 (L2VPN/L3VPN), and traffic engineering.\n\nRegistry & Security Expertise:\n\n Hands-on experience with AFRINIC portal management, ISPA operational compliance, IRR object creation, and RPKI implementation. \n\nBNG Operations:\n\n Solid experience managing BNG platforms (e.g., Juniper MX, Nokia and MikroTik) and subscriber protocols (PPPoE, IPoE, RADIUS/TACACS+).\n\nLinux / OSS Systems:\n\n Proven track record supporting Linux-based OSS platforms, system administration, and shell scripting/automation.\n\nPreferred Certifications:\n\n CCNP / CCIE (Service Provider)\n\n JNCIP / JNCIS-SP\n\n Linux Professional Institute (LPIC) or RHCE","description_format":"text","description_chars":2872,"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":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Broadband"],"lifecycle":[{"event":"open","at":"2026-11-02T21:58:50Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring 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