Senior Infrastructure Engineer in London

We’re London’s largest and fastest 100% full fibre broadband provider, bringing better internet to Londoners since 2013. Unlike most providers, we build, own and operate our dedicated fibre optic network and install it directly into the home, meaning we can deliver a super-fast connection at prices the national providers find hard to beat.

We’re proud of our achievements so far, but we are not complacent and definitely not stopping here. To help us get to our future, we’re looking for forward thinkers, people with big ideas, people passionate about technology and most importantly hard working team players to join us and be a part of our growing business.

Job purpose:

The Senior Infrastructure Engineer is responsible for developing, maintaining, improving, and supporting Community Fibre’s infrastructure service environments which support our customer-facing network. This includes both cloud (AWS) and on-premise servers, storage, applications, databases, containers, and as-a-service offerings.

• Manage and maintain existing Linux based servers, both on-prem and cloud hosted, including management of security patches, distribution upgrades and configuration management, systems/codebases, installation/configuration/operation of the applications running on the servers.
• Work with the Network Technology Team and be responsible for building new servers/systems as well as ensuring that all our existing ones are maintained, reliable and resilient.
• The role covers backend systems engineering, infrastructure, and site reliability engineering within the Network Technology group.
• Provide guidance and mentoring to other engineers, supporting the design, implementation and troubleshooting when required.
• Create and implement high and low-level designs in alignment with architecture principles and standards.
• Act as a senior member for the Network Technology team, providing an escalation point and acting as a mentor to other engineers in the team.

What you’ll be doing:

• Responsible for low-level design and implementation of solutions to time, cost and quality, following industry best practices.
• Create, improve, and maintain automation scripts to increase system maintenance efficiency and reduce repetitive manual tasks.
• Have a service-first approach with a systems thinking aptitude.
• Provide guidance and mentoring to other engineers, supporting the design, implementation and troubleshooting when required.
• Develop scripts in Python, Bash, and Perl to automate system administration tasks, infrastructure deployment, and network security enhancements.
• Oversee the planning, deployment, and maintenance of network infrastructure using tools such as Terraform and Puppet.
• Utilise Puppet to manage configurations consistently across different environments, ensuring efficiency and compliance.
• Build and maintain CI/CD pipelines to facilitate automated deployment and integration processes.
• Configure and manage complex security solutions using tools such as Freeradius, Palo Alto Networks devices, FreeIPA, iptables, and firewalled.
• Automate operating system installations and configurations for various Linux distributions, including Ubuntu, CentOS, AlmaLinux, and RHEL.
• Design and deploy infrastructure based on microservices architecture to improve scalability and service isolation.
• Develop and enforce robust security protocols, applying various security methods including encryption, authentication, and intrusion detection systems.
• Lead diverse types of testing to ensure system integrity and security, including uni, integration, performance, security, and end-to-end testing.
• Responsible for managing diverse storage environments ranging from physical storage solutions to advanced cloud storage systems.
• Lead significant projects including design, development, integration and deployment.
• Deliver end-to-end data ingestion and processing using OpenSearch/Elastic Stack.

The experience we’re looking for you to bring:

• Minimum of 5 years of experience working in a server and storage environment.
• ISP/MSP Experience.
• Advanced understanding of Linux (Ubuntu / Debian, and CentOS / RHEL).
• Experience with infrastructure as code (IAC) practices.
• Configuration management: Puppet and Ansible.
• Orchestration: Terraform.
• DCIM/IPAM tools, e.g. NetBox.
• Log ingestion: OpenSearch/Elasticsearch, Logstash, Kibana, Filebeat, Syslog.
• Containerisation: Docker and/or Kubernetes.
• Virtualisation experience.
• Cloud: AWS.
• Databases: PostgreSQL and/or MySQL.
• Application Servers: Apache or nginx, WSGI.
• Deep understanding of key service health metrics.
• Knowledge of current security best practices including encryption and systems hardening.
• Excellent understanding of telecommunications industry practices, standards, and regulatory requirements.
• Solid understanding of core ITIL processes.
• Hands-on experience with automation and orchestration tools such as Ansible, Terraform and Puppet.
• Experience using version control systems, e.g. Git.
• Excellent communication and interpersonal skills, with the ability to engage with stakeholders at various levels.
• Ability to work independently and collaboratively in a fast-paced environment.
• Strong analytical and problem-solving skills.
• Keen to learn new technologies.

Nice to have:

• Familiarity with SIEM, detect security threats and event correlation is a plus.
• Experience with data replication, backup, and recovery strategies.
• Next generation firewall experience.
• Scripting Languages – Eg Bash and Python.

Tech stack:

• DNS.
• Dell PowerEdge and PowerVault, HPE ProLiant, Supermicro.
• Elasticsearch/OpenSearch, Logstash, Filebeat, Opensearch.
• NetBox.
• Ansible.
• Virtualisation.
• AWS.
• Puppet.
• Terraform.
• Linux Operating Systems.
• Databases – Eg NoSQL, MySQL, PostgreSQL.

Why join us:

• Work with some of the best technology in the market.
• Be part of an exciting scale up business where you can bring your ideas, bring your knowledge, we value your contribution.
• 25 days holiday to enjoy, increasing by 1 day for each year of service up to 28 days.
• Birthday leave, our treat to you.
• Keen cyclist, join our cycle to work scheme.
• Flexible WFH policy.
• Enjoy the perks of Private Health Cover.
• Work with an amazing bunch of people.

We are an Armed Forces friendly organisation. We are an equal opportunities employer that values diversity in our team, we welcome applications from all backgrounds.