Sr. Engineer, IT Infrastructure Engineering

The Opportunity:

At Avantor, people are the most important part of our success because they drive our global performance. That’s why our Operations, Lab Services, Sales, and many other Avantor teams rely on our talent acquisition initiatives to attract, engage and hire the right talent. Avantor’s IT team is a crucial part of this mix, enabling all our internal teams worldwide to grow beyond their limits.

The Senior Network Engineer is responsible for the design, implementation, optimization, and support of enterprise network infrastructure across on-premises, cloud, and government-regulated environments. This role serves as the technical lead for complex network initiatives, providing advanced engineering expertise while ensuring secure, reliable, and scalable network services.

The Senior Network Engineer leads the planning and execution of strategic infrastructure projects, develops enterprise network standards, mentors junior engineers, and collaborates with cross-functional teams to align technology solutions with business and cybersecurity objectives. This position is expected to independently lead initiatives from design through implementation while maintaining operational excellence.

What we’re looking for:

• Education: Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent experience.
  • Preferred Certifications
    • Cisco CCNP Enterprise
    • Cisco CCIE (Preferred)
    • Aruba Certified Professional
  • AWS Advanced Networking Specialty
  • Palo Alto PCNSE
  • CISSP (Preferred)

• Experience: 8+ years of enterprise network engineering experience with leadership of complex infrastructure projects, cloud networking, and regulated environments.
  • Networking: Cisco Catalyst, Cisco Nexus, Cisco ISR/ASR, Cisco SD-WAN, Aruba CX, Aruba Wireless, HPE Networking, BGP, OSPF, EIGRP, VLANs, VRF, QoS, MPLS, VPN, Multicast, High Availability
  • Security: Cisco ISE, Aruba ClearPass, Palo Alto, Cisco Firepower, Cisco Umbrella, TACACS+, RADIUS, 802.1X, PKI, MFA, Zero Trust
  • Cloud & Infrastructure: AWS, Azure, VMware, Hyper-V, Direct Connect, ExpressRoute, Hybrid Networking
  • Automation & Tools: Python, PowerShell, Ansible, Cisco DNA Center, Aruba Central, SolarWinds, ServiceNow, Wireshark, Git

How you will create an impact:

Network Architecture & Engineering

• Design, implement, and maintain enterprise LAN, WAN, WLAN, SD-WAN, cloud, and data center networking solutions.
• Lead architecture reviews and recommend improvements to increase network performance, resiliency, scalability, and security.
• Develop and maintain enterprise network standards, design documentation, and operational procedures. Evaluate emerging technologies and recommend strategic improvements.
• Ensure solutions align with enterprise architecture, cybersecurity requirements, and operational best practices.

Project Leadership

• Serve as the technical lead for complex infrastructure projects and network modernization initiatives.
• Lead planning, implementation, testing, migration, and post-implementation support.
• Coordinate activities with Infrastructure, Security, Cloud, Server, IAM, Site Services, and business stakeholders.
• Manage vendor relationships and third-party implementation activities.
• Provide technical guidance during planning, budgeting, and business case development.

Network Operations

• Provide Level 3/4 support for complex networking issues.
• Lead root cause analysis for major incidents.
• Drive continuous improvement through monitoring, automation, and lifecycle management.
• Develop operational documentation and runbooks.
• Participate in on-call support and critical incident response.

Security & Compliance

• Design and maintain secure network architectures supporting corporate and government environments.
• Implement Cisco ISE, Aruba ClearPass, Palo Alto, Cisco Firepower, Cisco Umbrella, MFA, and NAC technologies.
• Support compliance with CMMC, NIST, CIS Controls, and FIPS where applicable.
• Support internal and external audits.

Technical Leadership

• Mentor Network Engineers and provide technical leadership.
• Review designs, implementation plans, and change requests.
• Promote engineering standards and best practices.
• Lead knowledge sharing and documentation.
• Participate in disaster recovery and business continuity planning.

Disclaimer:

The above statements are intended to describe the general nature and level of work being performed by employees assigned to this classification. They are not intended to be construed as an exhaustive list of all responsibilities, duties and skills required of employees assigned to this position. Avantor is proud to be an equal opportunity employer.

Why Avantor?

Dare to go further in your career. Join our global team of 14,000+ associates whose passion for discovery and determination to overcome challenges relentlessly advances life-changing science.


The work we do changes people's lives for the better. It brings new patient treatments and therapies to market, giving a cancer survivor the chance to walk his daughter down the aisle. It enables medical devices that help a little boy hear his mom's voice for the first time. Outcomes such as these create unlimited opportunities for you to contribute your talents, learn new skills and grow your career at Avantor.


We are committed to helping you on this journey through our diverse, equitable and inclusive culture which includes learning experiences to support your career growth and success. At Avantor, dare to go further and see how the impact of your contributions set science in motion to create a better world. Apply today!

Pay Transparency:

The expected pre-tax pay for this position is

$107,500.00 - $173,075.00

Actual pay may differ depending on relevant factors such as prior experience and geographic location.

EEO Statement:

We are an Equal Employment/Affirmative Action employer and VEVRAA Federal Contractor. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state/province, or local law.

If you need a reasonable accommodation for any part of the employment process, please contact us by email at View email address on aiapply.co and let us know the nature of your request and your contact information. Requests for accommodation will be considered on a case-by-case basis. Please note that only inquiries concerning a request for reasonable accommodation will be responded to from this email address.

For more information about equal employment opportunity protections, please view the Know Your Rights poster.

Privacy Policy:

We will use the personal information that you have submitted to us in order to consider your application for the relevant role.

Your privacy is important to us. Please click here for our Privacy Policy which explains the purposes for which we will use your personal information and the ways in which we will handle and retain your information. It also explains the rights you have in relation to your information, and how to contact us with any queries or requests.

3rd Party Non-Solicitation Policy:

By submitting candidates without having been formally assigned on and contracted for a specific job requisition by Avantor, or by failing to comply with the Avantor recruitment process, you forfeit any fee on the submitted candidates, regardless of your usual terms and conditions. Avantor works with a preferred supplier list and will take the initiative to engage with recruitment agencies based on its needs and will not be accepting any form of solicitation.

Avantor offers a comprehensive benefits package including medical, dental, and vision coverage, wellness programs, health savings and flexible spending accounts, a 401(k) plan with company match, and an employee stock purchase program. Employees also receive 11 paid holidays, accrue 18 PTO days annually, are eligible for volunteer time off and 6 weeks of 100% paid parental leave (except in states that offer paid family leave). These benefits may not apply to employees covered by a collective bargaining agreement or those subject to other eligibility rules.