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Sr. Network Test Engineer Cellular, WiFi & Broadband
Sr. Network Test Engineer Cellular, WiFi & BroadbandInabia Software & Consulting • Bellevue, Washington, USA
Sr. Network Test Engineer Cellular, WiFi & Broadband

Sr. Network Test Engineer Cellular, WiFi & Broadband

Inabia Software & Consulting • Bellevue, Washington, USA
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Senior Network Test Engineer

Location : Onsite (5 days / week)

Type : Full-time W-2

Work Authorization : Must be legally authorized to work in the United States without sponsorship.

Position Overview

Inabia is seeking a highly skilled Senior Network Test Engineer with deep hands-on experience validating cellular (LTE / 5G) WiFi broadband and enterprise IP networking systems. This role demands strong technical rigor across RF IP layers protocol analysis broadband connectivity VPN setup routing and end-to-end network performance validation.

You will own test planning test environment configuration field / lab validation KPI measurement and L2L7 troubleshooting for advanced telecommunications and enterprise-grade network systems.

Key Responsibilities

Cellular / WiFi / Broadband Testing

  • Conduct comprehensive testing across LTE LTE-A 5G NSA / SA WiFi 5 / 6 / 6E and residential / enterprise broadband access technologies.
  • Validate throughput latency jitter packet loss QoE and service continuity across fixed and mobile access.
  • Test and evaluate broadband gateways CPEs modems routers mesh systems and indoor coverage solutions.
  • Perform multi-RAT test scenarios : attach registration CA EN-DC VoLTE / VoWiFi VoNR handovers fallback and failover.

IP Networking Routing & Configuration

  • Configure and test IPv4 / IPv6 addressing subnets VLANs DHCP NAT DNS and routing behaviors.
  • Validate VPN configurations (IPsec SSL WireGuard OpenVPN) including tunnel setup failover and throughput impacts.
  • Execute test cases involving LAN / WAN routing QoS firewall rules port forwarding and enterprise-grade security controls.
  • Analyze L2L7 network behavior using tcpdump Wireshark iPerf TR-069 / USP SNMP syslogs IP routing tables and traceroute / pathping.

    • Test Environment Setup & Management

  • Build and maintain multi-node testbeds including 5G CPEs WiFi APs broadband gateways SIM configs VPN endpoints and core network simulators.
  • Integrate various network elements (UEs routers switches servers) and configure network services to replicate real enterprise and residential environments.
  • Automate test workflows where possible and ensure testbed version control repeatability and documentation.

    • Tools Logs & Diagnostic Analysis

  • Use tools such as QXDM / QCAT Wireshark tcpdump TEMS X-Cal Actix iPerf spectrum analyzers to capture and interpret logs.
  • Perform advanced log analysis for RRC NAS SIP RTP / RTCP and IP-layer events to diagnose root causes across RF and IP tech stacks.
  • Investigate throughput bottlenecks packet loss patterns IP routing anomalies DNS failures and misconfiguration issues.

    • Reporting Documentation & Cross-Team Collaboration

  • Produce clear and actionable test plans test cases KPI dashboards defect logs and RCA reports.
  • Work closely with device OEMs carrier engineering teams broadband vendors and enterprise networking teams.
  • Provide engineering feedback for firmware updates feature improvements certification cycles and customer escalation scenarios.

    • Required Qualifications

  • 5 years in telecom or advanced network testing (LTE / 5G / WiFi / broadband).
  • Strong knowledge of IPv4 / IPv6 subnetting routing VLANs DHCP DNS NAT VPNs and enterprise network configuration.
  • Hands-on experience with broadband gateways home routers WiFi APs 5G / LTE CPEs or ISP-grade network equipment.
  • Proficiency in QXDM QCAT Wireshark tcpdump iPerf TEMS X-Cal or similar tools.
  • Experience testing VoLTE / VoWiFi IMS SIP / RTP traffic mobility call flows and service continuity.
  • Proven ability to build manage and debug complex test environments.
  • Strong documentation troubleshooting and communication skills.

    • Preferred Qualifications

  • Experience with carrier broadband deployments ISP labs DOCSIS / Fiber or DSL / Copper access.
  • Familiarity with firewall rules routing tables ACLs QoS policies and enterprise networking best practices.
  • Exposure to Python automation frameworks or log-parsing scripts.
  • Experience working with U.S. carriers broadband ISPs or network equipment vendors.

    • Required Experience :

    Senior IC

    Key Skills

    Academics,Football,Bluetooth,Fabrication,Claims Investigation,Event Marketing

    Employment Type : Full-Time

    Experience : years

    Vacancy : 1

    Hourly Salary Salary : 55 - 65

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