Senior Store Network Validation Engineer

Precision Technologies; Irving (TX); On-site; USD 120,000 - 150,000; Full time

Job summary

Precision Technologies is seeking a Sr. Network Test Engineer to validate store network infrastructure, POS applications, peripherals, and cloud services across lab, mock-store, pilot-store, and production environments.

You will partner with Network Engineering, InfoSec, Store Ops, vendors, and project leadership to validate deployments and ensure readiness. The role emphasizes risk-based test design, SCRUM collaboration, and hands-on testing of network connectivity, performance, and device

Qualifications

• Minimum 6 years of experience in test engineering, systems testing, network testing, or quality engineering.
• Strong understanding of IPv4/IPv6 addressing and subnetting, TCP vs UDP, DNS, DHCP, ARP, and ICMP.
• Working knowledge of HTTP/HTTPS, VLANs, VPNs, NAT, firewalls, routing, switching, Wi-Fi, and PoE.
• Experience understanding Change Requests, validating implemented configurations, and testing store devices after changes are applied.
• Experience executing connectivity, reachability, performance, failover, recovery, reliability, and stability tests.
• Ability to design positive, negative, boundary, integration, functional, regression, and end-to-end test scenarios.
• Hands-on experience with Wireshark or similar packet-capture tools; basic packet-capture interpretation is required.
• Experience using ping, tracert/traceroute, nslookup, dig, and comparable connectivity or DNS troubleshooting tools.
• Ability to analyze connectivity failures and identify DNS, routing, firewall, port, application, network, or configuration issues.

Responsibilities

• Identify risks and contribute to user story and requirement definition.
• Define, develop, and review test cases, test plans, test scenarios, and overall test strategy.
• Read and analyze network requirements and Change Requests; identify testable, ambiguous, and missing requirements.
• Convert requirements and Change Requests into positive, negative, boundary, integration, and regression test scenarios.
• Build and maintain mock-store and lab environments that represent real store network and device configurations.
• Perform integration and functional testing of store devices after a Change Request is implemented.
• Execute connectivity, reachability, configuration, DNS, routing, firewall, port, and device-access validation.
• Perform network-performance testing, including latency, packet loss, bandwidth, and response-time analysis.
• Execute network failover, recovery, reliability, and stability testing.
• Test POS applications, payment devices, scanners, cameras, printers, and other store peripherals and cloud-connected services.
• Capture logs, packet traces, screenshots, test evidence, and performance measurements to support defect analysis.
• Troubleshoot issues across application, device, network, security, and configuration layers and help determine root cause.
• Manage defects through triage, prioritization, retesting, closure, and regression validation with full traceability.
• Coordinate test execution with Network Engineering, InfoSec, Store Operations, engineering teams, vendors, and AT&T.
• Support pilot-store validation, go/no-go reviews, production verification, and post-deployment issue investigation.
• Recommend wired or wireless implementation approaches based on reliability, security, bandwidth, cost, and maintainability.
• Improve repeatability through automation, scripting, reusable test utilities, and standardized test evidence.
• Team player mentality, actively cooperating with both engineering and non-engineering colleagues.
• Work effectively in SCRUM environments and participate in team ceremonies, planning, refinement, and delivery activities.
• Demonstrate creativity, ownership, and a quality-first mindset when solving complex store technology challenges.

Skills

Network testing

IPv4/IPv6

DNS/DHCP

Wireshark

Packet analysis

Test case design

Automation scripting

Troubleshooting

Lab environments

Test strategy

Education

Degree in Computer Science or related

Tools

Wireshark

Packet capture tools

nslookup/dig

HTTP/HTTPS analysis

Job description

Precision Technologies is seeking a Sr. Network Test Engineer to validate store network infrastructure, POS applications, peripherals, and cloud services across lab, mock-store, pilot-store, and production environments.

You will partner with Network Engineering, InfoSec, Store Ops, vendors, and project leadership to validate deployments and ensure readiness. The role emphasizes risk-based test design, SCRUM collaboration, and hands-on testing of network connectivity, performance, and device