Cisco ACI Automation & Network Scripting Specialist

We are seeking a highly skilled Cisco ACI Automation and Network Scripting Specialist to support the engineering, automation, optimisation, and day‑to‑day operations of large‑scale data centre network environments. The ideal candidate will have deep expertise in Cisco ACI fabric, programmability, API‑driven network automation and SDN concepts within enterprise or regulated environments.

This role will play a key part in designing automation frameworks, implementing scalable infrastructure‑as‑code solutions, and enhancing operational efficiency across the network estate.

Cisco ACI Engineering & Operations

• Design, implement, and manage Cisco ACI fabric across multi‑site data centre environments.

• Configure ACI components including tenants, VRFs, EPGs, contracts, L3
  
  Outs, multipod environments and APIC clusters.

• Lead troubleshooting, root‑cause analysis and performance optimisation of SDN environments.

• Develop automation for lifecycle management of ACI policies and configurations.

Network Automation & Scripting

• Build and maintain automation workflows using Python, Ansible, Bash, Terraform or similar tools.

• Use Cisco ACI APIs (REST, XML/JSON), ACI Toolkit and Cobra SDK for automated fabric management.

• Develop CI/CD pipelines for network configuration deployment and validation.

• Implement infrastructure‑as‑code approaches to standardise and streamline network provisioning.

Operational Excellence & Governance

• Ensure alignment with internal security, compliance and architectural standards.

• Produce operational documentation, design diagrams and automation runbooks.

• Collaborate with security, cloud and platform teams to integrate ACI within the wider technology ecosystem.

• Support transition towards policy‑based and software‑defined networking models.

Innovation & Continuous Improvement

• Evaluate new Cisco ACI features, SDN technologies, and automation tools for adoption.

• Drive reduction of manual effort through reusable templates and automation frameworks.

• Contribute to networking strategy, architectural enhancements and long‑term technology roadmaps.

• Strong hands‑on experience with Cisco ACI, APIC, multi‑site architectures and SDN principles.

• Proficiency in Python, YAML, JSON and REST APIs.

• Experience with automation tools such as Ansible, Git, Jenkins, Terraform or equivalents.

• Strong understanding of core networking technologies, including:

  • BGP, OSPF, VXLAN, EVPN, MPLS

  • Layer 2 / Layer 3 switching and routing

  • Security policies, segmentation and firewalls

• Experience operating in large‑scale or regulated enterprise environments (financial services preferred).

• Ability to troubleshoot complex technical issues in mission‑critical environments.

• CCNP/CCIE, Dev Net Professional/Expert or equivalent certifications.

• Experience with cloud networking (AWS, Azure) and hybrid connectivity.

• Experience automating Cisco Nexus, next‑generation firewalls, or F5 load balancers.

• Familiarity with monitoring platforms such as Splunk, Grafana, App Dynamics, or ACI Health Score.

Delta Capita is an equal opportunity employer. We positively encourage applications from suitably qualified and eligible candidates regardless of age, colour, disability, national origin, ancestry, race, religion, gender, sexual orientation, gender identity and/or expression, veteran status, genetic information, or any other status protected by applicable law.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. If you require any reasonable adjustments through your interview process, please use the designated space within the application questionnaire.

This is a 12 Month Fixed Term Contract located in London. As the selection and interview process is ongoing, please submit your application in English as soon as possible, if your profile is selected, a member of our team will contact you within 4 weeks. For this role, a valid working permit for the UK is mandatory.

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