Network design engineer

Mott Macdonald; Remote; GBP 80,000 - 100,000; Full time

Job summary

A leading engineering consultancy is seeking a Design Engineer on a contract basis for 6-9 months. The role involves producing detailed design documentation and collaborating with stakeholders for robust solutions. Applicants must hold active SC Clearance and have a strong Cisco networking background. This position is primarily remote with occasional travel, offering a day rate of £350-£400. The ideal candidate will be able to pass BS 7858 vetting.

Qualifications

• Candidates must hold active SC Clearance, preferably obtained via the MOD or DESNZ.
• Ability to pass BS 7858 vetting.
• Strong background in technical solution design, ideally with SMEs or enterprise customers.

Responsibilities

• Produce high-quality High-Level and Low-Level Designs, along with Bills of Materials.
• Collaborate with stakeholders to deliver robust technical solution designs.
• Design and support networking solutions for SMEs and larger environments.

Skills

SC Clearance (MOD or DESNZ preferred)

Technical solution design experience

Cisco networking experience

Knowledge of Layer 2 and Layer 3 networking

Routing protocols and load balancing

Exposure to data centre technologies

Experience with firewall and security technologies

Understanding of legacy technologies

Tools

Microsoft Office

Visio

Job description

Job Title: Design Engineer (Contract)

Contract Length: 6-9 months

Location: Remote (occasional travel required)

IR35 Status: Outside IR35

Day Rate: £350-£400 per day

Contact: [e-mail]

Security Requirements

Candidates must hold active SC Clearance, preferably obtained via the MOD or DESNZ, and must also be able to pass BS 7858 vetting as part of the onboarding process.

Key Responsibilities

• Produce high-quality High-Level Designs (HLDs), Low-Level Designs (LLDs), Bills of Materials (BOMs), and Site Implementation Documents.
• Work closely with technical and customer stakeholders to deliver robust technical solution designs.
• Design and support networking solutions for SME and larger customer environments.
• Collaborate on projects involving data centre technologies, networking platforms, and legacy infrastructure.
• Ensure all designs follow industry best practice and meet customer technical standards.
• Utilise tools such as Microsoft Office and Visio to document and present design outputs.

Key Skills & Experience

• Active SC Clearance (MOD or DESNZ preferred).
• Ability to pass BS 7858 vetting.
• Strong background in technical solution design, ideally working with SMEs or enterprise customers.
• Solid, hands‑on Cisco networking experience, ideally working towards or recently achieving CCNP certification.
• Exposure to data centre technologies such as Cisco UCS environments and Nexus/9500-series (e.g., 9571 K) platforms.
• Expert knowledge across Layer 2 and Layer 3, IP Networking, routing protocols, load balancing, MPLS, and Radio technologies.
• Experience producing complex LLDs and implementation documentation.
• Understanding of firewall and security technologies.
• Working knowledge of legacy technologies including SDH, PDH, and ISDN.