Curriculum Vitae

Jan 22 - Present day, Sky UK, Isleworth
Senior Site Reliability Engineer

Split up existing Ansible roles into their own repos, added Ubuntu support, Molecule testing, linting and PR builds using Jenkins.
Upgraded >100 DataStax Cassandra clusters onto an up-to-date version and migrated the nodes from CentOS onto Ubuntu.
Implemented OpenTelemetry Collector for exporting trace data to Google’s Cloud Trace, and enabled features like tail sampling to forward complete traces of high latency or traffic with error responses for review.
Built custom Prometheus exporters using Go.
Deployed optional spot instance node types for Kubernetes to save costs for workloads that can handle interruptions.

Oct 19 - Dec 21, Tesco Mobile, Slough
Run & Operate Engineer (DevOps Engineer)

Sole person responsible for supporting AWS infrastructure, including multiple Kubernetes clusters and various EC2 machines using tools like Terraform, Packer and Helm.
Implementing a service mesh (Istio) for greater visibility and control of traffic passing through the infrastructure.
Deploying updates to tools and Tesco Mobile services.
Maintaining Jenkins and GitHub actions CI/CD pipelines

Aug 19 - Oct 19, Tesco Mobile, Slough
Developer

Sep 18 - Aug 19, UKCloud Ltd, Farnborough
Software Engineer

Developing tools to automate invoice generation and reporting
Linux configuration automation using Ansible
Completing code reviews for members of my team and for non-developer teams across the business.
Integration of monitoring tools into a “single pane of glass” monitoring tool using custom extensions written in JavaScript.

Mar 16 - Sep 18, Memset Ltd, Cranleigh
Senior Python Developer

Notable projects include:

Developed a product to support site failover and traffic distribution using BGP to advertise or drop routes based on user-defined health checks.
Re-write of switch VLAN configuration generator to enable unit testing, support for VLANs on LAG groups, multi-chassis LAG and new switch models.
Maintenance of the Linux firewall configuration generator, and adding features such as policy routing.
Automating configuration of our new monitoring tool (Zabbix)

Apr 15 - Feb 16, iPass UK Ltd, London
Python Django Developer

Developed tools to help deploy new features to all customers
Acted as an escalation point for bug fixes
Automated custom reports for customers
Built internal use frameworks to reduce large amounts of boilerplate code.
Improved integration with Django using basic Django features - such as Django forms, messaging, database routers, test runners and fixed 500 error reporting.

Feb 14 - Apr 15, Memset Ltd, Cranleigh
Python DevOps Engineer

Developing and maintaining tools to automate deploying and configuring virtual and physical servers.
Migrating legacy Perl scripts to Python and to use Django ORM.
Writing unit tests to ensure tools function correctly.

Notable projects include:

Adding support for Xen virtual servers to be allocated to more than one vLAN (including automating routing, switch and Xen configuration).
Adding support for Xen PVHVM virtual machines.
Adding support for redundant cabling to physical servers.
Automate customer penetration testing and reporting using Nessus.

Mar 13 – Dec 13, BlackBerry, Slough
NOC Unix Administrator (3rd line)

Providing 3rd line support to the NOC, and assisting with monitoring and other roles when short-staffed.
Completing more significant and larger projects to assist the NOC members with troubleshooting common issues within the Blackberry network, including the development of a Python CGI tool to assist with tracing messages through the BlackBerry infrastructure.

Oct 12 – Mar 13, BlackBerry, Slough
Acting NOC Systems Administrator (3rd line)

Providing 3rd line support to the NOC, and assisting with monitoring and other roles when short-staffed.
Completing more significant and larger projects to assist the NOC members with troubleshooting common issues within the Blackberry network, including the development of a Python CGI tool to assist with tracing messages through the BlackBerry infrastructure.

Dec 11 – Oct 12, BlackBerry, Slough
NOC Operations Administrator (2nd line)

Provide 2nd line support to ‘NOC Operators’, and work on tickets to resolve issues within the prescribed SLAs.
Take on 1st line roles such as monitoring on occasions such as being short-staffed.
Executing pre-planned changes to the Blackberry Network.
Taking an active role on troubleshooting conference calls, by providing information and answers to questions and requests posed by Senior and Specialist members of the team, as well the pro-active investigation of the cause of and impact of these issues.
Development of Python-based CLI tools to aid investigation of common complaints, as well as to develop a greater understanding of the inner workings of the Blackberry network

Oct 10 – Dec 11, BlackBerry, Slough
NOC Operator (1st line)

Responsible for monitoring the Blackberry Network, as well as resolving known issues as per the documented procedures.
Troubleshooting issues, as well as escalating issues to senior members of the NOC and other specialist teams.
Scheduling troubleshooting conference calls with both external and internal parties.
Documenting steps taken by all parties on troubleshooting calls, to be used for establishing the root cause analysis for impacting issues.
Developing a command-line Java tool to aid troubleshooting of issues within the Blackberry Network.

Apr 09 – Sep 10, 2e2 UK Limited, Reading
NOC Engineer

Monitoring of customers’ Cisco Data, Voice and Security products, as well as servers and other IT equipment.
Investigation and remote repair of faults; organising field engineers to attend faults that cannot be resolved remotely.
Performing daily and nightly tasks, such as LES circuit availability checks, CUCM backup verifications.
Completing changes on customers’ live equipment, such as static route changes and SNMP configuration.