Share this Job

Title:  Senior Network Security Engineer

Job ID:  3221

Krakow, MA, PL

Category:  Information Technology

Senior Network Security Engineer

Plan, engineer, configure, implement, and troubleshoot security and Network infrastructure necessary to maintain, secure global enterprise network.  Provide subject matter expertise for a variety of technology projects with an emphasis on technology security.  



  • Conduct high-level and low-level designs for Enterprise security and network infrastructure  projects.
  • Implement Enterprise infrastructure changes.
  • Interact with partner organizations/departments to design network or system solutions for DFIN   enterprise infrastructure. make recommendations on investments for network hardware and services.
  • Evaluate new security and network technologies and recommend future strategy to management.
  • Experience in architecture and design of a global enterprise network.


  •  Actively participate and identify changes needed in Enterprise infrastructure strategy reviews, design sessions, and configurations necessary to achieve the technology organization goals.
  •  Analyze network & system response and determine tuning recommendations to improve performance, adhere to capacity management expectations, and provide performance management reporting.
  • Manage effective issue identification and resolution processes; serve as a senior escalation point for all enterprise network and security operations issues with a degree of quality that results in absolute root-cause determination and drive vendor partners to provide quality assurances by requiring immediate bug fixes, software updates, etc., as necessary to always ensure an Ideal

Customer Experience.

  • Perform 24x7x365 advanced tier 1-3 support, including but not limited to: troubleshooting, off-hour maintenance activities, problem resolution, and on-call rotation while ensuring adherence to the Donnelley Financial Solutions Change Management policy.
  • Create and maintain documentation as it relates to network systems, design, configuration, support, and processes for all supported network infrastructure. Create and maintain Disaster Recovery plans; ensure they are tested and updated regularly


  • Assist with defining requirements in support of budget plans and make recommendations for ways to improve performance and reduce costs. Develop business cases that support changes to network and system infrastructure.
  •  Develop network and system performance tools and integrate them into the existing infrastructure. Design an effective test plan for any new/changed service provider infrastructure.
  • Ensure communication of process and procedure changes to key stakeholders.
  • Support identification and collection of metrics and performance reporting processes.
  • Determine Key Performance Indicators and infrastructure standards 
  • Identity process improvement areas and develop improvement initiatives.

Soft Skills 

  • Research current industry technology to better facilitate vendor and partner communications
  • Subject Matter Expertise (SME) for relevant technologies. 
  • Requires minimal supervision to perform job duties.
  • Develop and deliver cross-training to other members of the team.
  • Participate in and encourages a knowledge-sharing environment both within and outside the department
  •  Ability to manage multiple projects and prioritize workloads accordingly

Business Partnership 

  • Establish and maintain working relationships with the technical, business, customers, associates, sourcing counterparts, and vendors as necessary to proactively identify needed changes. ·
  • Participate in process improvement initiatives.
  •  Actively participate in industry/vendor forums to guide product development activities.

People Management

· Manage individual workload and deliver to agreed-upon milestones.


The Sr. Network Security Engineer is expected to demonstrate technical knowledge of the skills listed below. The technical skills will depend on his/her specific responsibilities within the organization.


· Minimum of 4 years of working knowledge in Next Gen Firewalls, Load balancers.

· Minimum of 2 years of working knowledge in WAF

· Minimum of 3 years of working knowledge in routers, switches

· Minimum of 1 years working knowledge of a major scripting language

· Minimum of 4 years of working knowledge in network management and troubleshooting tools

· Minimum of 4 years of knowledge on routing and switching protocols

· Working knowledge of O365, Visio, G-suite, Lucid Charts

· Minimum of 2 years of working knowledge of public (Azure, AWS), SaaS Products and private cloud

· Knowledge of SD-WAN is preferred

· Excellent written and verbal communication skills

· Travel required (+/-5%)

Education and Certification

· Bachelor’s degree in related technical / business areas is preferred

· CCNP, CISSP preferable but not required

· Any other certification is a plus

Job Segment: Cloud, Testing, Network, CCNP, Cisco, Technology