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Senior Automation Developer – Network & Infrastructure
6-Month Contract | Application Delivery Engineering | Global Infrastructure | Hybrid
About the Role
My client is looking for an experienced Senior Automation Developer to join their Application Delivery Engineering team on an initial 6-month contract.
This is a software development and automation-led role, focused on building the tooling, frameworks, APIs and automated workflows that underpin large-scale enterprise infrastructure.
You will be responsible for developing production-quality Python automation, integrating APIs, building Infrastructure as Code capabilities and creating automated testing and deployment workflows.
Networking and application delivery knowledge is important, but the core focus of the role is development and automation.
You will work across platforms including F5 Load Balancing and Infoblox DNS/DHCP, developing automation that enables these services to be deployed, configured, tested and consumed through repeatable, API-driven processes.
Key Responsibilities
Automation Development
- Design, develop and maintain production-quality Python automation for enterprise infrastructure.
- Build reusable automation frameworks, libraries, modules and tooling.
- Develop automated workflows for infrastructure provisioning, configuration, validation and lifecycle management.
- Replace manual infrastructure processes with fully automated, repeatable workflows.
- Develop tooling that can be reused across multiple infrastructure platforms and environments.
- Refactor and enhance existing automation to improve reliability, scalability and maintainability.
- Implement robust logging, error handling, exception management and operational reporting.
- Develop solutions that enable infrastructure teams to consume services through self-service automation.
Python Development
- Write clean, modular, maintainable and testable Python code.
- Develop Python applications that interact with infrastructure platforms and APIs.
- Build automation libraries and reusable components rather than one-off scripts.
- Develop automated data processing, configuration generation and validation capabilities.
- Implement unit and integration testing for automation code.
- Participate in peer code reviews and follow established development standards.
- Troubleshoot and debug complex Python applications and automation workflows.
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API Development & Integration
- Develop and consume REST APIs to automate infrastructure services.
- Build integrations between internal systems, infrastructure platforms and third-party technologies.
- Develop API-driven workflows for configuration and service provisioning.
- Handle authentication, data validation, error handling and API response processing.
- Build automation that abstracts complex infrastructure operations behind simple, reusable interfaces.
- Support the development of services that enable Infrastructure as Code and self-service consumption.
Infrastructure as Code
- Develop and maintain Infrastructure as Code using Ansible, Terraform or similar technologies.
- Create reusable automation modules, roles and templates.
- Version-control infrastructure configurations and automation code using Git.
- Build automated workflows for infrastructure provisioning and configuration management.
- Ensure infrastructure changes are repeatable, auditable and consistently deployed.
- Help establish development standards for enterprise Infrastructure as Code.
Automated Testing & Quality
- Design and develop automated test frameworks for infrastructure and automation code.
- Build unit, integration, regression and acceptance tests.
- Automate the certification and validation of new infrastructure platforms, hardware and software releases.
- Develop automated lab testing and pre-production validation processes.
- Implement automated quality gates within CI/CD pipelines.
- Investigate failed tests and deployments and implement permanent fixes.
- Ensure automation is thoroughly tested before being introduced into production.
CI/CD & DevOps
- Develop and maintain CI/CD pipelines for automation and infrastructure services.
- Integrate automated testing, security scanning and validation into development pipelines.
- Automate build, test and deployment processes.
- Implement Git-based development and release workflows.
- Support continuous integration and continuous delivery of infrastructure automation.
- Improve developer experience through better tooling, automation and deployment processes.
Networking & Infrastructure
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Networking knowledge will be an important part of the role, particularly when developing automation for application delivery and network services.
You will work with technologies including:
- F5 BIG-IP LTM & GTM
- TMSH
- iControl REST APIs
- iRules
- Infoblox DNS/DHCP
- TCP/IP
- BGP
- HTTP/HTTPS
- SSL/TLS
- DNS
- DHCP
Essential Skills & Experience
Core – Automation & Development
- Strong commercial experience developing Python automation.
- Demonstrable experience building production-quality automation rather than simple scripting.
- Strong understanding of software development principles and design patterns.
- Experience developing reusable libraries, frameworks and automation tooling.
- Experience with REST APIs and system integration.
- Strong experience with Git and source control.
- Experience writing automated unit and integration tests.
- Strong debugging and problem-solving skills.
Automation & DevOps
- Strong experience with Ansible or equivalent automation technology.
- Experience with Infrastructure as Code.
- Experience developing and maintaining CI/CD pipelines.
- Understanding of automated software testing and release processes.
- Experience working within Agile / DevOps engineering environments.
- Ability to take an automation requirement from design → development → testing → deployment → support.
Networking
- Good to strong understanding of enterprise networking.
- Experience working with network, compute or middleware automation.
- Understanding of TCP/IP, HTTP, SSL/TLS, DNS and DHCP.
- Experience with application delivery or load-balancing technologies.
F5
- Experience with F5 BIG-IP is highly desirable, including:
- LTM
- GTM
- TMSH
- iControl APIs
- iRules
Desirable Skills
- Terraform or other Infrastructure as Code technologies.
- Infoblox DNS/DHCP.
- Cisco or Arista networking.
- Additional programming languages such as Go, Java, Perl or JavaScript.
- Docker and containerisation.
- Kubernetes.
- VMware / virtualisation.
- Cloud platforms and cloud automation.
- Jenkins, GitLab CI, GitHub Actions or similar.
- Automated infrastructure testing frameworks.
- Security and vulnerability scanning integration.
- Monitoring, logging and observability.
- F5 or Cisco certifications.
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