Network Engineer

Marshall Dennehey; Philadelphia (Philadelphia County); Hybrid; USD 95,000 - 140,000; Full time

Benefits offered by this job

Hybrid work environment

Competitive salary package

Job summary

Marshall Dennehey, a leading defense firm in Philadelphia, seeks a Network Engineer to support, implement, and maintain servers, storage, firewalls, and network security across multiple locations.

The role involves configuring Cisco/Palo Alto/NetScaler/Meraki gear, supporting Exchange Online and Mimecast, and managing Active Directory, DNS, DHCP, and Azure services. A hybrid work arrangement and after‑hours support are required.

Qualifications

• Bachelor's degree in Information Technology or related field.
• Minimum 5 years network engineering experience in enterprise environments.
• Experience with data center infrastructure.
• Experience with cloud networking, such as Azure.
• Legal environment experience preferred but not required.

Responsibilities

• Support, implement, and maintain LAN, WAN, WLAN, VPN, and SD-WAN environments.
• Configure network hardware including Cisco, Palo Alto, NetScaler, and Meraki devices.
• Monitor performance and troubleshoot connectivity, latency, and bandwidth issues.
• Provide support for Exchange Online/Mimecast security.
• Maintain storage infrastructure (HPE Alletra, StoreOnce, Dell Compellent, Synology).
• Support Active Directory, DNS, DHCP, and Group Policies.
• Support Azure environment and Entra MFA integration.
• Administer Windows servers and Hyper-V with clustering and replication.
• Maintain Veeam backup and recovery for on‑prem and cloud.
• Perform data center installs, racking, and decommissioning of equipment.
• Monitor data center power, UPS, rack power, and cooling.

Skills

Communication

Customer service

Time management

Problem solving

Independent work

Teamwork

Prioritization

Adaptability

Education

Bachelor's degree in Information Technology

Tools

Cisco switches

Palo Alto firewalls

NetScaler load balancers

Meraki wireless access points

HPE Alletra

StoreOnce

Dell Compellent

Synology

Veeam backup

Active Directory / DNS / DHCP

Azure cloud networking

Job description

The law offices of Marshall Dennehey, a leading defense firm, is seeking a Network Engineer for its Philadelphia, PA office.

Job Summary:

We are seeking a skilled Network Engineer to support, implement, and maintain our organization's systems and network infrastructure. The Network Engineer will be responsible for ensuring the stability, integrity, security, and efficient operation of servers, storage, firewalls and network security across multiple locations.

Key Responsibilities:

• Support, implement, and maintain LAN, WAN, WLAN, VPN, and SD-WAN environments.
• Configure and manage network hardware consisting of Cisco switches, Palo Alto firewalls, NetScaler load balancers and Meraki wireless access points.
• Monitor network and system performance and troubleshoot connectivity, latency, and bandwidth issues. Respond promptly to alerts needing immediate attention.
• Provide secondary assistance supporting the Exchange online email environment, including Mimecast email security.
• Manage and maintain the storage infrastructure consisting of HPE Alletra, StoreOnce, Dell Compellent and Synology systems.
• Support Microsoft Active Directory and domain services such as DNS, DHCP, and Group Policies.
• Support Microsoft Azure environment, including synchronization between Active Directory and Entra, MFA, and Enterprise Applications.
• Support Windows servers and Hyper-V environment, including cluster environment with multiple virtual machines and Hyper-V replication.
• Administer and maintain Veeam backup and recovery solutions supporting both on-premises and cloud-based environments.
• Provide hands‑on support within data center environments, including the installation, racking, stacking, and decommissioning of network and server equipment.
• Monitor and support data center infrastructure requirements, including power distribution, UPS systems, rack power utilization, and cooling requirements.
• Participate in various Application and Development project upgrades, including configuring new servers, providing storage and performing network configuration changes.
• Provide oversight of the Firm's network and endpoint managed security products, and participate in regular security testing and remediation
• Assist management by providing recommendations for future projects and budget planning.
• Perform firmware upgrades, patch management, and network capacity planning.
• Create, maintain and update accurate technical documentation in Visio, Excel and Word.
• Perform other related duties as assigned.

POSITION REQUIREMENTS:

• Hybrid work environment consisting of working at the firm's Philadelphia office and remotely.
• Flexible schedule with the ability to work outside of standard business hours to support maintenance activities, upgrades, system migrations, and critical projects.
• Must be willing and able to travel as needed to support branch offices, data centers, project implementations.
• Must be capable of providing timely support during after‑hours emergencies to ensure the availability and reliability of critical network infrastructure.

REQUIRED SKILLS:

• Exceptional verbal and written communication skills in order to effectively communicate with a wide range of personnel, including end users, IT personnel and vendors.
• Excellent interpersonal and customer service skills.
• Excellent organizational skills and attention to detail.
• Excellent time management skills with a proven ability to meet deadlines.
• Ability to work independently and make wise decisions.
• Strong analytical and problem‑solving skills.
• Ability to prioritize tasks and to delegate them when appropriate.
• Ability to function well in a high‑paced and at times stressful environment.
• Ability to follow process and procedures.

EDUCATION AND EXPERIENCE:

• Bachelor's degree in Information Technology, or a related field, or equivalent work experience.
• Minimum of 5 years network engineering experience in enterprise environments.
• Experience supporting data center infrastructure.
• Experience with cloud networking, such as Azure.
• Previous experience working in legal environment preferred but not required.

Marshall Dennehey is not accepting unsolicited resumes from search firms for this position.

Firm offers a sound future, competitive salary and an excellent benefits package.

We are an Equal Opportunity Employer AA/M/F/D/V.