Network Engineer - 5+ Yrs Experience - Philadelphia, PA

Marshall Dennehey; Philadelphia (Philadelphia County); Hybrid; USD 110,000 - 140,000; Full time

Job summary

Marshall Dennehey, a leading defense firm in Philadelphia, PA, seeks a skilled Network Engineer to support and maintain our network and server infrastructure across multiple locations.

The role covers LAN/WAN/WLAN/VPN/SD‑WAN, security devices, AD/Azure, Hyper‑V, storage, and data center operations, with after‑hours support and occasional travel. A bachelor’s in IT or equivalent experience is required, with 5+ years in enterprise environments.

Qualifications

• Bachelor's degree in IT or equivalent work experience.
• Minimum of 5 years networking engineering 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 and manage network hardware including Cisco switches, Palo Alto firewalls, NetScaler load balancers, Meraki APs.
• Monitor network and system performance; troubleshoot connectivity, latency, and bandwidth issues.
• Provide secondary support for Exchange Online email including Mimecast security.
• Manage storage infrastructure (HPE Alletra, StoreOnce, Dell Compellent, Synology).
• Support Active Directory and domain services (DNS, DHCP, GPOs).
• Support Azure environment, including AD Entra synchronization, MFA, and Enterprise Applications.
• Support Windows servers and Hyper‑V, including clustering and replication.
• Administer Veeam backup/recovery for on‑prem and cloud.
• Hands‑on data center support: installation, racking, stacking, decommissioning of equipment.
• Monitor data center power, UPS, rack power, and cooling.
• Participate in upgrades and network configuration changes for applications and development projects.
• Oversee security products and participate in testing/remediation.
• Assist management with project recommendations and budgeting.
• Perform firmware upgrades, patch management, and capacity planning.
• Create and update technical documentation in Visio, Excel, Word.
• Perform other related duties as assigned.

Skills

Communication

Customer service

Time management

Problem solving

Independence

Analytical skills

Prioritization

Stress tolerance

Process adherence

Education

Bachelor's degree in IT

Tools

Visio

Excel

Word

Azure

Hyper-V

Veeam

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.

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

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