Manual Test Engineer

We are looking for experienced Manual Test Engineers with strong expertise in LAN network testing and file systems, including Encrypted File System (EFS) and mounting. This role sits within a large enterprise environment where you will be responsible for ensuring secure, reliable, and high-performing network and file system operations. You will work closely with infrastructure, security, and end-user computing teams. Key Responsibilities LAN Network Testing

• Perform end-to-end LAN testing, including VLANs, IP addressing, DHCP, DNS, routing, and ACLs

• Validate QoS, firewall rules, and application connectivity

• Test redundancy and failover scenarios such as LAG, spanning tree, and high availability

• Measure and analyse network performance including latency, jitter, throughput, and packet loss

• Execute pre- and post-change validation and produce supporting test evidence File System Testing (including EFS)

• Validate file share availability, permissions, and access controls (NTFS/ACLs, POSIX)

• Test Encrypted File System (EFS), including encryption, certificate handling, and recovery scenarios

• Validate SMB/NFS access, file locking, concurrency, and file integrity

• Perform backup and restore testing, including encrypted data scenarios Mounting and Access Point Testing

• Validate mounting of network shares across Windows, Linux, and macOS

• Test wireless access including SSID availability, WPA2/WPA3, and 802.1X authentication

• Assess roaming, access point performance, and device behaviour

• Validate differences between guest and corporate network access General Testing Responsibilities

• Create and execute test plans, test cases, and test data

• Perform functional, regression, smoke, and integration testing

• Log defects with clear reproduction steps and evidence

• Participate in UAT and Go/No-Go decisions

• Ensure compliance with ITIL and change management processes

• 3 to 7 years of experience in manual testing with strong exposure to network and file system testing

• Solid understanding of TCP/IP, DHCP, DNS, NAT, VLANs, routing, and ACLs

• Hands-on experience with SMB/NFS, NTFS permissions, and EFS

• Experience with wireless testing, including SSID configuration, security protocols, and roaming

• Familiarity with tools such as Wireshark, tcpdump, ping, and traceroute

• Experience with Jira, Azure DevOps, or ALM

• Strong analytical, troubleshooting, and documentation skills Security Requirements

• Must be eligible for UK Security Clearance (SC)

• Active SC clearance is desirable but not essential