Network Engineer

hackajob is collaborating with Optum to connect them with exceptional tech professionals for this role.

Are you a seasoned Network Engineer seeking your next contract role, working on a high-impact transformation programme? Join us as we migrate a major legacy data centre—comprising 93 individual services—to a modern, scalable cloud platform on AWS by the end of 2025.

You’ll play a key role in designing, securing, and optimising the network landscape to support this cloud migration. This is a high-profile project, and your expertise will be instrumental in ensuring a seamless, secure transition.

We’re offering a day-rate contract within a collaborative, forward-thinking engineering team. If you enjoy solving complex networking challenges and thrive in technically demanding environments, this could be the role for you.

What You’ll Do

You’ll be responsible for ensuring robust, secure, and scalable network operations throughout the migration of services from our on-premise data centre to AWS. You’ll collaborate with infrastructure, cloud, and security teams to deliver reliable connectivity and protection across hybrid environments.

Key Responsibilities Include

• Supporting the migration and re-architecture of on-premise network infrastructure to the cloud
• Designing and maintaining secure, high-performing network configurations using Juniper and Cisco technologies
• Managing load balancing and traffic optimisation to ensure service continuity and performance
• Implementing and maintaining DNS, firewall, IPS/IDS, and DDoS solutions within a hybrid infrastructure
• Supporting the deployment of Software Defined Networking (SDN), with a preference for VMware NSX
• Automating network provisioning and policy management using Infrastructure as Code principles
• Producing high-quality documentation and effectively communicating with technical and non-technical stakeholders
  
  

Who You’ll Be

You’ll be an experienced Network Engineer with a track record of supporting enterprise-scale hosted environments and cloud migrations. You’ll be confident working across complex hybrid infrastructures and collaborating closely with multidisciplinary teams.

We’re looking for someone with strong problem-solving skills, a proactive mindset, and the ability to work independently when needed.

Essential Skills And Experience

• Expert in enterprise WAN, LAN, and WLAN, with Juniper and Cisco stacks
• Experience with cloud networking (AWS and Azure)
• Strong understanding of firewalls, load balancers, IPS/IDS, and DDoS protection
• Hands-on experience with SDN technologies (NSX experience a plus)
• Skilled in DNS management and network automation practices
• Excellent written and verbal communication
  
  

If you're ready to take on a pivotal role in a major cloud migration project, we’d love to hear from you.