Senior Network Engineer (DC)

DataFin; Johannesburg; On-site; ZAR 800 000 - 1 200 000; Full time

Job summary

A forward-thinking Digital Solutions Provider in Johannesburg is seeking a Senior Specialist: Network Engineer to design, implement, and optimize network systems. The ideal candidate has over 5 years of network engineering experience, with a strong foundation in Cisco ACI and related technologies. This role involves leading project initiatives, ensuring network security, and mentoring junior engineers, all while driving digital connectivity innovation.

Qualifications

• Minimum of 5 years’ experience in network engineering, with at least 2 years in a specialist capacity.
• Proven expertise in Cisco ACI design and troubleshooting.
• Strong experience with automation tools to enhance efficiency.

Responsibilities

• Architect and deploy networking solutions that meet performance and security requirements.
• Monitor performance, troubleshoot issues, and ensure continuous uptime.
• Implement and manage security protocols.

Skills

Cisco ACI design

C#

ASP.NET

SQL

VxLAN networks

Network security management

Project leadership

Education

3-year Bachelor’s degree in Computer Science, IT, or related field

Job description

ENVIRONMENT

Join a forward-thinking Digital Solutions Provider as a Senior Specialist: Network Engineer in Johannesburg. This isn’t just about keeping the lights on — it’s about building and maintaining next-gen network infrastructure that drives innovation, resilience, and scalability. You’ll play a key role in designing, implementing, and optimising network systems while ensuring security and reliability for business‑critical operations. With your strong technical foundation, 5+ years of network engineering experience (at least 2 in a specialist role), and deep knowledge of Cisco, ACI, and related technologies, you’ll be part of a team shaping the future of digital connectivity.

DUTIES

• Network Design & Implementation – Architect and deploy robust networking solutions that meet performance, security, and scalability requirements.
• Maintenance & Optimisation – Monitor performance, troubleshoot issues, and ensure continuous uptime.
• Security Management – Implement and manage firewalls, VPNs, intrusion detection, and other security protocols.
• Project Leadership – Lead end-to-end network projects from planning to delivery, managing timelines and resources.
• Capacity Planning – Analyse growth trends to anticipate future requirements and scale infrastructure.
• Mentorship – Support and guide junior engineers, fostering knowledge sharing and continuous improvement.
• Vendor & Stakeholder Management – Collaborate with vendors and negotiate for hardware/software solutions aligned with business goals.
• Documentation & Compliance – Maintain accurate documentation and ensure alignment with regulatory and audit requirements.

REQUIREMENTS

• 3-year Bachelor’s degree in Computer Science, IT, or related field.
• Minimum of 5 years’ experience in network engineering, with at least 2 years in a specialist capacity.
• Proven expertise in Cisco ACI design, configuration, and troubleshooting (multi-pod fabric, APIC management, firmware upgrades).
• Strong experience with C#, ASP.NET, SQL, and automation tools to enhance efficiency.
• Ability to troubleshoot and deploy VxLAN networks.
• Experience supporting large-scale data centres and complex enterprise networking environments.

CERTIFICATIONS (ADVANTAGEOUS)

• Cisco Certified Network Professional (CCNP) or CCIE.
• Certified Information Systems Security Professional (CISSP).
• Cisco Certified Design Expert (CCDE).
• VMware VCP-NV or VCAP-NV Design.
• Aruba ACMX / Certified Wireless Design Professional (CWDP).
• CompTIA Network+.
• Certified Network Defender (CND).

ATTRIBUTES

• Strong analytical and problem-solving skills with attention to detail.
• Resilient, self-driven, and results-oriented.
• Ability to lead, mentor, and collaborate effectively across teams.
• High integrity and professionalism with excellent communication skills.