Cellular DevOps Engineer

BrezQ; Menlo Park (CA); On-site; USD 150,000 - 190,000; Full time

Job summary

BrezQ is seeking a Cellular DevOps Engineer for its Wearables Cellular team in the Engineering Labs. This hands-on role blends hardware lab work with software automation to enable end-to-end cellular testing, including RF optimization, modem provisioning, and CI/CD integration.

You will build infrastructure, automate IP management services, manage MySQL databases, and contribute to testing across NR/SA, LTE, and multi-RAT scenarios, with a focus on reliability and scalable workflows.

Qualifications

• 3+ years in cellular/wireless engineering, DevOps, or a combined infrastructure role.
• Hands-on with 4G LTE and/or 5G NR— including cell planning, RF measurements, and UE attach/registration flows.
• Linux Systems Administration: Shell scripting, networking, embedded device interaction.
• Automation experience with at least two areas: CI/CD pipelines, IaC, configuration management, database admin, or monitoring systems.
• Full-stack debugging mindset from RF signal levels and modem firmware up to service RPCs and database queries.

Responsibilities

• Configure and maintain private 5G/LTE network operations for small-cell/callbox infrastructure.
• Optimize RF signal paths and troubleshoot cabling, attenuation, and antenna configurations.
• Manage device modem provisioning, EFS operations, QMI/DIAG interfaces, and modem mode configuration.
• Run NR attach/detach cycles, data path checks (ping/DNS/iperf3), GNSS, and multi-RAT tests.
• Stage devices in shield boxes, map rack equipment, and support lab operations.

Skills

3+ years exp

Cellular/wireless

Linux administration

IaC / automation

Full-stack debugging

Tools

Amarisoft

Keysight

Rohde Schwarz

Job description

We are seeking a Cellular DevOps Engineer to join our Wearables Cellular team within Engineering Labs. This role sits at the intersection of public and private 5G/LTE cellular network engineering and DevOps automation, supporting the development and testing of next-generation wearable devices with cellular connectivity.

In this role, you will build, operate, and automate the infrastructure enabling end-to-end cellular testing—from RF signal path optimization and modem provisioning to CI/CD pipeline integration and automated IP management services. This is a hands‑on engineering position requiring both hardware lab familiarity and strong software/automation skills.

Key Responsibilities

• Private 5G/LTE Network Operations: Configure and maintain small-cell/callbox infrastructure supporting NR SA, LTE, and NR-RedCap across multiple frequency bands (n2, n5, n25, n66, B2, B5, B66).
• RF Signal Path Management: Optimize RSRP/RSRQ/SINR measurements in shielded test environments; troubleshoot cabling, attenuation, and antenna configurations.
• Device Modem Provisioning: Manage modem calibration file provisioning, EFS (Embedded File System) operations, QMI/DIAG interfaces, and modem mode configuration.
• Cellular E2E Test Execution: Run and validate NR attach/detach cycles, data path verification (ping/DNS/iperf3), GNSS integration, and multi-RAT connectivity scenarios.
• Hardware Lab Operations: Stage and pair devices in shield boxes, manage rack equipment mapping, coordinate with vendor tools, and maintain reference device baselines.

DevOps & Automation (40%)

• CI/CD Pipeline Integration: Configure and maintain automated blocking and non-blocking test lanes for cellular test suites.
• Infrastructure-as-Code: Manage network ACLs, configuration pushes, proxy filters, and DNS automation pipelines.
• Service Development (Python): Build and maintain automated services like IP management pipelines (static routing, DNS verification, asset tagging, batch processing).
• Database & State Management: Administer MySQL databases, schema migrations, configuration management systems, and service state stores.
• Monitoring & Observability: Instrument services with time-series metrics, manage alerting thresholds, respond to health alerts, and track SLA compliance.
• Inventory & Asset Management: Extend CLI tools, reservation workflows, and device registration pipelines.

Test Framework & Tooling (20%)

• Callbox Integration Tooling: Develop and maintain Python/Thrift bridges for callbox queries and control RPCs.
• Modem Utility Libraries: Contribute to shared device-side modem management libraries (mode switching, airplane mode, cellular measurements).
• Lab Network Tooling: Build and maintain lab network management features (PoE control, port management, VLAN allocation).

Required Qualifications

• 3+ years of experience in cellular/wireless engineering, DevOps, or a combined infrastructure role.
• Private Cellular Network Experience: Hands‑on with 4G LTE and/or 5G NR— including cell planning, RF measurements (RSRP, RSRQ, SINR), and UE attach/registration flows.
• Linux Systems Administration: Shell scripting, systemd services, networking (VLANs, static routing, iptables/nftables), and embedded device interaction (adb, fastboot, serial).
• Infrastructure Automation: Experience with at least two: CI/CD pipelines, IaC, configuration management, database administration, or monitoring systems.
• Full‑Stack Debugging Mindset: Ability to troubleshoot from RF signal levels and modem firmware up to service RPCs and database queries.

Preferred Qualifications

• Experience with Amarisoft, Keysight, Rohde & Schwarz, or similar small‑cell/callbox platforms.
• Familiarity with Qualcomm modem tooling (QXDM, QMI, DIAG, NV item provisioning, EFS management).
• Exposure to wearable or IoT device development and testing.
• Experience with Thrift/gRPC service development and service mesh architectures.
• Knowledge of MCTP/NCSI or other baseboard management protocols.
• Background in test automation frameworks (Jest, pytest, or similar).
• Familiarity with network security tooling (ACL generation, firewall policy management).
• Experience operating shielded/anechoic test environments.