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Salary
$80k – $95k per year
Location
Remote/Hybrid (London, United Kingdom)
Seniority
Senior · 5+ years exp

Confirmed on the employer's own hiring board on Sep 24, 2026. First seen by Alion on Sep 23, 2026.

Overview
Company
Impact
Profile match
Dillon Consulting is an employee-owned professional consulting firm specializing in planning, engineering, environmental science, and management. The company partners with clients to deliver innovative and sustainable solutions for complex infrastructure, facilities, and community development projects. Headquartered in Toronto, Ontario, it operates a nationwide network of offices to provide comprehensive multidisciplinary services.

Overview

We are currently seeking an Infrastructure Systems Administrator to join our Informational Technology team. Reporting to the IT Infrastructure Manager, you will have the opportunity to work on new and exciting projects while providing clients with a fully integrated and superior customer experience.

This position is available at our London office.

Schedule: We provide coverage between 7:00 AM and 8:00 PM EST. Candidates should have the flexibility to work shifts within this window.

We offer flexible work hours and hybrid work arrangement options to help balance the competing demands of work and personal life.

About Dillon

Dillon Consulting Limited (Dillon) is a proudly Canadian, 100% employee-owned professional consulting firm specializing in planning, engineering, environmental science, and management. With over 25 offices and more than 1100 employees across Canada, we offer a wide range of services related to building and improving facilities and infrastructure, protecting the environment, and developing communities.

At Dillon, we strive to remain at the forefront of technology and innovation and thrive on interdisciplinary collaboration, empowering our people to challenge conventional thinking and build careers focused on creating a lasting impact in our communities. We are committed to ongoing professional development and celebrate the unique perspectives that each team member brings to the table.

Employee ownership is available to all Dillon team members, and over 60% of our employees own shares in Dillon. Through employee ownership, we return the financial benefit created by our project work to the very people who created that value. Because we are an employee-owned firm, your voice will be an essential part of our shared success.

Responsibilities

What your day will look like

Primary

  • Administer and maintain on-premises networking systems across the entire company
  • Administer and maintain cloud networking systems (Azure)
  • Investigate, troubleshoot, and resolve complex technical issues

Secondary

  • Administer and maintain local physical infrastructure
  • Administer and maintain local and cloud based virtual infrastructure
  • Participate in infrastructure related projects
  • Manage cloud storage environments

Tertiary

  • Monitor environment for stability and security alerts and react as they arise
  • Create and maintain appropriate infrastructure standards, diagrams, and procedures
  • Share accountability for after hours activities as needs arise

Learning and Development

  • Commit to self-development and ongoing learning and professional development
  • Contribute to Dillon’s corporate profile through active participation in professional associations and committees

Qualifications

What you will need to succeed

  • 5+ years experience configuring and managing layer 3 switches (must have)
  • 5+ years experience configuring and managing Palo Alto firewalls (must have)
  • 5+ years of experience in designing, supporting, and maintaining in large and complex IT environments (must have)
  • In-depth understanding and experience of Information Technology standards and best practices
  • Post-secondary degree in information technology or an IT related discipline or equivalent combination of education, training, and experience

Experience

  • Demonstrated experience with:
    • Palo Alto Firewalls
    • Aruba/Cisco switches
    • Network design and implementation (LAN/WAN)
    • Meraki wireless
    • Active Directory/Group Policy
    • VMWare vSphere/VCentre
    • Google Workspace Administration
    • Microsoft 365 Administration
    • Veeam or other backup and restore technologies
    • Windows Server
    • Linux Server
    • Cisco DUO
    • Data centre management
    • Cloud based infrastructure management including AWS, Azure, and Google
  • Ability to coordinate, prioritize and complete multiple tasks and multiple priorities
  • Strong forward thinking, analytical, interpersonal, and problem-solving skills
  • Excellent oral and written communication skills
  • Desire to learn and explore new technologies

Experience with any of the following are considered distinct assets:

  • CCNA certification
  • ITIL certification
  • Network, security or infrastructure certifications such as MCSE, CISSP, etc.

Compensation:

$80,000 - $95,000

Dillon is including the salary range that we in good faith believe may offer for this position. It will be dependent on the successful applicant’s education, experience, and skills, in addition to internal equity and geographic region. Dillon reserves the right to pay outside of the posted range, contingent on factors unrelated to an applicant’s gender or other status protected by provincial and/or federal law.

Why choose Dillon

Dillon is powered by people who are technically proficient, passionate about socially important projects, and motivated to deliver superior, tangible results. We strive to remain at the forefront of technology and innovation, and are empowered to continually grow and develop.

We live our core values:

  • Achievement: do the work to hit the target;
  • Continuous Development: always learning; always adapting; always growing;
  • Creativity: discover new possibilities;
  • Courage: do the things that matter, especially when it’s hard;
  • Inclusiveness: enabling belonging to draw strength from our differences;
  • Reliability: words result in actions that build trust;

In addition, we offer:

  • Employee share purchase plan
    • Dillon is 100% employee owned and share ownership is open to all employees.
  • A competitive compensation package
    • Comprehensive health benefits
    • Generous retirement savings plan
    • Student loan repayment assistance with matching employer contributions
  • Flexible work hours and hybrid working options
    • Dillon values its staff and the contributions that are made each day and understands that work arrangements can differ based on personal needs and business needs. We are taking a trust-based approach to offer a variety of flexible and hybrid work options to help balance the competing demands of work and personal life.
  • Learning and Development opportunities
    • As a knowledge-based business, we use a composite approach to development including coaching to build the how, mentoring to share lessons, advising to round out perspectives, and co-creation of knowledge through internal learning opportunities.
  • Focus on Innovation
    • The ability to anticipate, examine, and adopt new and innovative solutions is a crucial driver for the continual and progressive advancement of our business performance. In our culture, people are empowered to reflect and question current practices and seek forward looking solutions to today’s problems and tomorrow’s opportunities.
  • Employee and Family Assistance program
    • A variety of EFAP tools and online resources to support well-being are available to all employees.
  • Goodlife Fitness Corporate Membership
    • Our employees can take advantage of reduced annual membership fees.
  • Wellness Subsidy
    • Our employees can take advantage of a wellness subsidy that can be put towards expenses for a variety of health and/or wellness related activities such as gym membership, purchase of home fitness equipment, yoga classes and dance classes.

About Dillon

Dillon is a proudly Canadian, employee-owned, professional consulting firm specializing in planning, engineering, environmental science, and management. We partner with clients to provide committed, collaborative, and inventive solutions to complex, multi-faceted projects. With over 25 offices and more than 1100 employees across Canada, Dillon offers a wide range of services related to building and improving facilities and infrastructure, protecting the environment, and developing communities.

Now operating for over 75 years, we continue to strive for excellence in everything we do. Dillon has been listed as one of Canada’s Best Managed Companies for 19 years in a row and has the distinction of being a Platinum Club member in this program.

Health & Safety at Dillon

Prospective employees are expected to fully align with Dillon's core commitment to Health & Safety. This includes active, ongoing engagement with our Health & Safety processes and platform, and the active, ongoing identification and reporting of health and safety hazards.

Employment Equity, Diversity & Inclusion at Dillon

Dillon is committed to employment equity and an inclusive, diverse workplace where opportunities are based on skills and abilities. If you require accommodation during the interview process, please let us know. We look forward to hearing from you.

Technology enablement and the use of AI at Dillon

We invest in modern technologies to enable continuous improvement across the organization. Please be advised that Dillon Consulting utilizes artificial intelligence (AI) assisted tools to support parts of our recruitment process to increase efficiency and fairness. While AI supports this process, all hiring decisions are made by our human recruiting team. By applying, you acknowledge and consent to this use.

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