Cellular DevOps Engineer

TekWissen LLC

Job Location:

Menlo Park, CA - USA

Monthly Salary: Not Disclosed

Posted on: 13 hours ago

Vacancies: 1 Vacancy

Job Summary

Overview:

TekWissen is a global workforce management provider headquartered in Ann Arbor Michigan that offers strategic talent solutions to our clients world-wide.

Title: Cellular DevOps Engineer
Duration: 12 Months
Location: Menlo Park CA (100% onsite at Client office)
Job Type: Temporary Assignment

Team:
Network Infrastructure & Labs - Cellular Connectivity

Role Overview:
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. You will be responsible for building operating and automating the infrastructure that enables 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 role that requires both hardware lab familiarity and strong software/automation skills.

Key Responsibilities:
Cellular & RF Engineering (40%)
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 signal path issues including cabling attenuation and antenna configuration
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 callbox vendors and maintain reference device baselines

DevOps & Automation (40%)
CI/CD Pipeline Integration: Configure and maintain automated test lanes - both blocking and non-blocking - for cellular test suites within continuous integration frameworks
Infrastructure-as-Code: Manage network ACLs network configuration pushes proxy filters and DNS automation pipelines
Service Development (Python): Build and maintain automated services such as 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 and maintain device inventory systems - CLI tools reservation workflows and device registration pipelines

Test Framework & Tooling (20%)
E2E Test Development: Author config-driven cellular E2E tests (JavaScript/Jest) covering LTE NR SA NR-RedCap and attach/detach scenarios
Callbox Integration Tooling: Develop and maintain Python/Thrift bridges for callbox queries and control RPCs
Modem Utility Libraries: Contribute to shared libraries for device-side modem management (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
Programming proficiency: Python (primary) with working knowledge of JavaScript; ability to write production services and test automation
Linux systems administration: Comfortable with shell scripting systemd services networking (VLANs static routing iptables/nftables) and embedded device interaction (adb fastboot serial)
Infrastructure automation: Experience with at least two of: CI/CD pipelines Infrastructure-as-Code configuration management database administration or monitoring systems
Debugging mindset: Ability to troubleshoot across the full stack - from RF signal levels and modem firmware to service RPCs and database queries

Preferred Qualifications:
Experience with Amarisoft or similar small-cell/callbox platforms (Keysight R&S)
Familiarity with Qualcomm modem tooling (QXDM QMI DIAG NV item provisioning EFS management)
Exposure to wearable/IoT device development or 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

Technical Environment:
Cellular: Amarisoft gNB/eNB 5G NR SA/NSA LTE NR-RedCap QMI/DIAG iperf3 commercial carrier networks (public signal testing)
Languages: Python JavaScript (Jest) Bash C (firmware)
Infra & DevOps: CI/CD pipelines configuration management MySQL time-series monitoring DNS automation
Test Frameworks: Jest (E2E) continuous integration gates automated test orchestration
Devices: Wearable prototypes development boards reference UEs
Networking: VLANs static routing PoE proxy configuration DNS
Hardware: Shield boxes RF cables/attenuators rack infrastructure

TekWissen Group is an equal opportunity employer supporting workforce diversity.

Overview: TekWissen is a global workforce management provider headquartered in Ann Arbor Michigan that offers strategic talent solutions to our clients world-wide. Title: Cellular DevOps Engineer Duration: 12 Months Location: Menlo Park CA (100% onsite at Client office) Job Type: Temporary A...