The Network Security Engineer is responsible for safeguarding enterprise network infrastructure by designing, deploying, and operating security solutions that monitor, inspect, and protect network traffic at scale. This role ensures secure connectivity across corporate, retail, data center, and cloud environments. The engineer leverages advanced network visibility platforms, cloud-secured access technologies, and packet brokers to detect threats, prevent data loss, and maintain a resilient security posture.
This is an on-site position located in Springfield, MO.
Responsibilities and Duties:
Design, implement, and operate network security controls including Zscaler ZIA/ZPA, Next-Gen Firewalls, packet brokers, and network sensors.
Optimize traffic flows, inspection policies, and routing to support business performance and security objectives.
Ensure accurate telemetry and metadata feeds to SIEM/SOAR, MDR partners, and internal detection engineering teams.
Develop automation and monitoring to improve reliability and reduce manual effort.
Contribute to documentation, runbooks, playbooks, and architecture diagrams.
Partner with Network Engineering, Infrastructure, Security Operations, and Application teams to deliver secure network solutions.
Analyze network traffic patterns to identify anomalies, threats, policy violations, and performance issues.
Administer and enhance Zscaler (ZIA/ZPA) configurations including policies, authentication methods, branch/store routing, and user experience optimization.
Support Zero Trust Network Access (ZTNA) and secure application connectivity.
Investigate and resolve network security incidents, including traffic anomalies, malicious communications, and access control issues.
Provide packet-level analysis using tools like Zeek logs, PCAPs, and packet broker introspection.
Assist in policy creation, security standards, and configuration baselines for enterprise network security.
Produce KPIs, visibility dashboards, and reporting on network security posture, coverage, and gaps.
Skills:
Required:
Preferred:
Education:
Bachelor's Degree or Equivalent Level
Experience:
O'Reilly Auto Parts has a proven track record of growth and stability. O'Reilly is full of successful career stories and believes in a strong promote-from-within philosophy, encouraging you to grow your career along with the organization.
Total Compensation Package:
O'Reilly Auto Parts is an equal opportunity employer. The Company does not discriminate on the basis of race, religion, color, national origin or ancestry (including immigration status or citizenship), sex, sexual orientation, gender identity, pregnancy (including childbirth, lactation, and related medical conditions,) age (40 and over), veteran status, uniformed service member status, physical or mental disability, genetic information (including testing or characteristics) or another protected status as defined by local, state, or federal law, as applicable.
Qualified individuals with a disability may be entitled to reasonable accommodation under the Americans with Disabilities Act. If you require a reasonable accommodation during the application or employment process, please send an email to: rar@oreillyauto.com or call (800) 471-7431 option *, and provide your requested accommodation, and position details.
It started with a father and son - Charles Francis "C.F." and Charles H. "Chub" O’Reilly. Together they had the courage and confidence to venture out on their own. Along with 11 others who shared the same desire to offer great customer service and auto parts availability, the doors of O’Reilly Automotive, Inc. opened on December 2, 1957.
Now, more than 61 years later, the 77,000-plus team members at O’Reilly Auto Parts are proud of the company’s achievements over the years.
During our early years, we focused on sales and slow and steady growth. At the end of our first year, sales totaled $700,000, and by 1961 volume reached $1.3 million. For the first seven years of operation, there was one store in Springfield, MO, until the second opened in July 1964. In March 1975, annual sales volume rose to $7 million and a 52,000 square-foot facility was built in Springfield for the O’Reilly/Ozark warehouse operation. By that time, the company had nine stores, all located in southwest Missouri.
The long range plans and stability of the company were solidified by a public offering of company stock in April 1993. Since that time, the Company has grown through new store and distribution center openings, as well as numerous mergers and acquisitions. O’Reilly currently operates stores in 47 states, including Alaska and Hawaii, and distribution centers in 27 locations.
Dramatic changes in technology, inventory control, facilities, and sheer size mark the O’Reilly growth and success story. But, it is our spirit of teamwork - how important it was then and how important it remains - that drives our performance. The company’s values and culture that started with the original 13 employee/owners remain evident and strong as we expand and develop Team O’Reilly.
We serve two distinct customer bases - the professional (installer) customers who provide auto repair services to their customers (DIFM - do it for me), and retail "walk-in" customers (DIY - do it yourself). Our dual-market strategy continues to differentiate us from the competition and is a major factor in our ongoing success. Depending on a store’s professional versus retail customer mix, more than 95 percent of our locations have team members dedicated to our professional customers, offering them separate counters, phone lines, and a delivery fleet that totals 18,455 vehicles. We also have a professional sales team, consisting of territory sales managers and in-store sales specialists, responsible for calling on our professional customers and building sound business partnerships to ensure O’Reilly is the First Call for their auto parts needs.