IT Systems Engineer

Onyx-Conseil; Greater London; Hybrid; GBP 55,000 - 85,000; Full time

Benefits offered by this job

Annual Bonus

Private Healthcare

Pension

Progression

Gym Membership

Full Training

Job summary

Onyx-Conseil in London is seeking an IT Systems Engineer (Eligible for DV Clearance) to support MOD projects and high-security environments. You will provide deep technical support for complex network and system issues, coordinate with NOC, contracts, and project teams, and help ensure systems operate reliably and securely.

The ideal candidate has hands-on Cisco experience (CCNA or equivalent), Fortinet or Juniper knowledge (Juniper preferred), and DV clearance eligibility.

Qualifications

• Strong hands-on experience with Cisco networking technologies.
• Hands-on knowledge of Fortinet or Juniper environments (Juniper preferred).
• Cisco CCNA or equivalent experience, or Juniper at a similar level.
• Eligible for DV Clearance.

Responsibilities

• Provide deep technical support for complex system issues, including software defects and network faults.
• Work within MOD teams to ensure systems operate reliably and remain stable.
• Support contracts team by providing technical clarification on contractual requirements.
• Contribute technical expertise to projects and bid activities.
• Escalate and respond to high-severity incidents with the NOC when required.

Skills

Cisco

Fortinet

Juniper

CCNA

DV Clearance

Job description

IT Systems Engineer (Eligible for DV Clearance)

Competitive Salary + Annual Bonus + Private Healthcare + Pension + Progression + Gym Membership + Full Training

London

We are looking for an IT Systems Engineer who is looking to work with sophisticated technology and to be a part of a business who is at the forefront of their industry.

With more than five decades of experience in government and maritime mobility, the company delivers high-quality maritime technology and satellite solutions across both Geostationary and Low Earth Orbit networks, working closely with leading satellite operators and a broad ecosystem of manufacturing partners.

In this role, you will work within MOD teams to ensure systems operate reliably and remain stable, with minimal direct customer interaction as most customer-facing activity is managed through the NOC across first-, second-, and third-line support. System queries and incidents are initially handled by the NOC, with your involvement focused on providing deep technical support for complex issues such as software defects, network faults, or major service incidents. You will also contribute technical expertise to projects and bid activities and support the contracts team by providing technical guidance to ensure requirements are clearly understood and accurately addressed.

The ideal candidate will have strong hands‑on experience with Cisco networking technologies, with additional experience in Juniper or Fortinet environments (Juniper preferred), and the ability to provide deep technical support for complex network and system issues. Eligibility for DV (Developed Vetting) security clearance is essential. Previous experience working within MOD or government environments is beneficial but not mandatory, and the role suits someone comfortable working with minimal customer interaction while collaborating closely with NOC, project, and contracts teams.

We value engineers who are hands‑on, detail-oriented, and comfortable working with a range of technologies and protocols across both Cisco and Juniper or Fortinet platforms.

The role:

• IT Systems Engineer
• Work within MOD teams to ensure systems operate reliably, remain stable, and perform as expected
• Provide deep technical support for complex system issues, including software defects and network related faults
• Assist the contracts team by providing technical clarification to ensure contractual requirements are clearly understood and met
• Contribute technical expertise to projects and bid activities, supporting design and delivery
• Support high-severity incidents escalated from the NOC where system degradation or outrages occur

The person:

• Strong hands on experience working with Cisco
• Hands‑on knowledge of Fortinet or Juniper (Juniper is preferred)
• Cisco CCNA or equivalent experience or Juniper at a similar level
• Eligible for DV Clearance

Reference Number: BBBH - 267464

The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set. We are an equal opportunities employer and welcome applications from all suitable candidates.

The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client.

We are an equal opportunities company and welcome applications from all suitable candidates.