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Senior Network Engineer

Job in Chicago, Cook County, Illinois, 60290, USA
Listing for: K2 Services
Full Time position
Listed on 2026-05-29
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security
Salary/Wage Range or Industry Benchmark: 150000 - 175000 USD Yearly USD 150000.00 175000.00 YEAR
Job Description & How to Apply Below

Summary

Opensity Solutions is seeking a highly experienced Senior Network Engineer with deep expertise in Fortinet, Azure networking, and enterprise‑scale infrastructure. This individual will play a critical role in designing, implementing, and managing complex, global network environments that prioritize performance, scalability, and security. The ideal candidate brings a strong foundation in modern network technologies and a proven ability to lead technical initiatives.

This role partners closely with cross‑functional teams across architecture, security, and engineering to deliver robust, scalable solutions and drive continuous optimization of network architecture.

Salary Range

$150,000 – $175,000 (base salary)

Bonus Eligibility

5% annual bonus based on company and individual performance

Responsibilities
  • Lead the design, implementation, and management of robust and scalable network infrastructure.
  • Provide technical leadership and mentorship to junior network engineers.
  • Configure and manage firewalls using Fortinet technologies to ensure the highest level of security.
  • Design and implement complex routing and switching solutions using Cisco switches.
  • Design, implement and manage a global Meraki wireless environment.
  • Acts as the liaison and subject matter expert between the architecture, security, and engineering teams to integrate technical solutions to existing multifaceted, complex, customer‑facing production environments.
  • Responsible for change management procedures and detailed ownership, planning, and execution of highly complex, secure, high risk, multifaceted changes.
  • Provide technical guidance and leadership to project teams and individuals as appropriate.
  • Acts as one of the top‑level escalation points for all networks and related technical designs.
  • Respond, analyze, and follow up on outstanding network issues at all levels; ensure timely problem resolution.
  • Strive to improve communications and teamwork across organizations.
  • Other key functions include carrier management, incident management, problem management, capacity management, service acceptance, event management, performance management, and standards compliance, with a focus on service restoration, sustainability, and proactive service improvement.
  • Additional duties as assigned.
Requirements
  • Bachelor’s degree in computer science, Information Technology, or related field.
  • 10+ years’ experience in a large multi‑platform environment or equivalent technical experience.
  • Azure Networking Services:
    In‑depth knowledge of VNet, VPN, Express Route, Azure Firewall, DNS, and Private Link.
  • Scripting & Automation:
    Proficiency in Power Shell, Azure CLI, and Terraform for Infrastructure‑as‑Code (IaC).
  • Proven experience with Fortinet Secure SD‑WAN.
  • Proven experience with Fortinet Secure Access Service Edge (SASE).
  • Proven experience with Fortinet Cloud Access Security broker (CASB).
  • Knowledge of networking protocols, security, and infrastructure.
  • Fortinet Certified Solution Specialist Network Security.
  • Excellent leadership, communication, and collaboration skills.
  • Relevant certifications such as Fortinet Network Security Expert (NSE).
  • Strong analytical/trouble shooting skills with extensive work experience; experience in providing situational analysis for networking/telecommunications.
  • Strong verbal and written communication.
  • Excellent customer orientation, support, and interfacing experience with the ability to persuade, convince, or influence others to take appropriate action.
  • Ability to lead and impact others at all levels of the organization.
  • Proven success in dealing with concurrent problems and issues effectively in a dynamic, high‑pressure environment.
  • Advanced understanding of business strategy as it relates to network environments.
Preferred Skills
  • Experience with virtualization technologies.
  • Familiarity with cloud networking solutions.
  • Knowledge of Software‑Defined Networking (SDN) concepts.
  • Scripting or automation skills for network‑related tasks.
  • Opensity Solutions is an Equal Opportunity Employer.
    We are committed to creating an inclusive workplace and consider all qualified applicants for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local laws. Employment decisions are based on qualifications, merit, and business needs.

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    Position Requirements
    10+ Years work experience
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