Computer Networking Intern Jobs in Belleville, IL

Are you an out of the box thinker?  Are you passionate about solving business problems with the latest technology?  If the answer is, “Yes!” then we have an exciting, internship opportunity for you.  Who are we?  We are ARCO, a Family of Construction Companies.  

We are looking for an Intern to work with ARCO’s IT Support & Cybersecurity Teams in our Brentwood, MO office.  As an IT Intern, you will assist all areas of the Technology department including responding to support tickets, maintaining technical documentation, and assisting with account creation. You will also be responsible to research email threats, learn how to analyze logs to identify threats, and work closely with our infrastructure team to remediate issues detected within our environment. This is a great opportunity for an intern that is energetic, likes working closely with others, and has a desire to help protect the ARCO organization.

The internship program in ARCO’s Technology Department is designed to provide hands-on on enterprise environments in a practical setting. Students get an opportunity to gain insight and meaningful experience and develop additional soft skills necessary while working at ARCO.  Work part time during the school year while attending college classes.  Full time working hours available in the summer.

We are dedicated to the well-being of our associates and are proud to be consistently recognized as a Best Place to Work.

• Competitive hourly rate
• Flexible hours to accommodate your class schedule
• Medical, dental, and vision insurance coverage when you Intern or Co-op with us for at least 3 months full time
• Company sponsored lunches, and events
• Stocked kitchen with coffee, soda, and snacks

At ARCO, our first core value is to treat people fairly and do the right thing. We are committed to building and sustaining a culture that supports diversity and inclusion. We are proud to be an equal opportunity employer, and all qualified applicants will receive consideration for employment.

From recruiting, training, and hiring practices to selecting our subcontractors, we understand that diversity of all those involved in the construction process enhances our ability to deliver the best solutions to our customers. We hire the best and the brightest from across the country – constructing a team of experts in architecture, design, engineering, project management, and business services.

• Respond and resolve user support information technology requests
• Maintain technical documentation of various systems and software programs
• Deploy new hardware, software, and upgrade existing installations
• Research solutions to new problems and better solutions to existing problems
• Participate in implementing IT-based projects
• Provisioning iOS and Android Mobile Devices
• Inventorying assets
• Handling Tier 1 Support Incidents and Requests through Service Now
• Imaging Workstations
• Assist with account creation
• Promote and maintain the Security Awareness Training program
• Responds to cyber incidents, performing routine analysis using security tools
• Review tickets and emails submitted by other employees, that appear suspicious, to determine if they are malicious.
• Utilize various tools and systems’ dashboard to generate reports and analyze the information to further remediate and help improving the security posture.
• Provides general support to aide in the completion of department tasks, projects, and programs
• Participate in planning and deploying Security Incident Response training exercises

• Candidates must be currently enrolled in a university or technical program in one of the following or a related technical field Information Technology, Computer Science, or Cybersecurity
• Must be enrolled in or completed a server or networking class in college
• Must be dependable, self-motivated, and detail-oriented and have excellent organizational and proofreading skills
• Must possess the ability to work and communicate effectively with other company personnel
• Proficiency in the Office 365 suite of products (i.e., Outlook, Word, Excel, PowerPoint) preferred
• Must be able to handle multiple priorities and operate efficiently and effectively and have good documentation and communication skills
• Must be able to work part to full time hours out of our Brentwood, MO office

We are proud to be one of the fastest-growing, privately-owned companies in America, celebrating over 30 years of experience as design-build experts. We have completed over 6,550 design-build projects nationwide. We ranked #6 on ENR’s Design-Build Firms list and #29 on ENR's Top 400 Contractors list of 2025. Most importantly, our clients like us, trust us and want to do business with us. We are looking for people with the same enthusiasm, passion, and respect for the hard work that brought us to where we are today. Are you a person that can make a difference at ARCO? If the answer is, “Yes!” we look forward to meeting you.

ARCO does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies without pre-approval from ARCO’s Human Resource team. Pre-approval is required before any external candidate can be submitted. ARCO will not be responsible for fees related to unsolicited resumes and for candidates who are sent directly to our hiring managers. Agencies must have a fully executed vendor agreement in place as well as written approval to submit candidates from an ARCO TA Manager for a specific position before submitting candidates.

#LI-CM4 #LI-Onsite

EOE, including disability/vets

• Candidates must be currently enrolled in a university or technical program in one of the following or a related technical field Information Technology, Computer Science, or Cybersecurity
• Must be enrolled in or completed a server or networking class in college
• Must be dependable, self-motivated, and detail-oriented and have excellent organizational and proofreading skills
• Must possess the ability to work and communicate effectively with other company personnel
• Proficiency in the Office 365 suite of products (i.e., Outlook, Word, Excel, PowerPoint) preferred
• Must be able to handle multiple priorities and operate efficiently and effectively and have good documentation and communication skills
• Must be able to work part to full time hours out of our Brentwood, MO office