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IT Architecture Consultant specialising in Secure DevOps
George Crosby
,
London, United Kingdom
Experience
Other titles
Skills
I'm offering
Summary:
A full-stack engineer with a background that lends itself to helping companies stay lean and connected whilst scaling up customers and services.
With 7 year's experience in hands-on DevOps roles in both Finance and Data Analytics I've learnt to provide frequent updates to clients when delivering technical initiatives by accurately estimating tasks, developing simple/clean code and document whilst delivering projects within my commitments to time.
I have been heavily involved in building scalable microservices on Kubernetes, migrating infrastructure and services to the cloud and creating build environments for growing teams of developers.
Skills:
Clouds - AWS, Azure, GCP, DigitalOcean, on-premise
Container orchestration - Kubernetes (k8s) Rancher, Docker Swarm
Continuous delivery/integration - Jenkins, DroneIO, Helm, Kubernetes, GoCD, Tilt, Earth, Earthly
Database - Elasticsearch, MongoDB, MySQL, MSSSQL, Postgres
Applications - Docker, Nginx, LAMP, CoreOS, Terraform, Tableau, MS Exchange, Nutanix, VMWare Horizon/vCenter, Kafka, Atlassian Jira/Confluence, Microsoft SQL Server, Microsoft Exchange CloudFormation, Hugo
Networking: DNS, DHCP, VLANs, NAT, any Cisco Switch/Firewall configuration
Languages:
Strong - PowerShell, Bash, Python, YAML, JSON
Intermediate - GoLang, NodeJS, JavaScript, HTML, CSS, C#, TSQL
Basic - Haskel, OCaml, Rust
Achievements (in the last 2 years):
- Developed Tilt and Earthly tools which provided an environment agnostic CI/CD pipelines
- Re-engineered SAAS architecture - migrating all production to microservices on Kubernetes reducing the company's total software expenditure by 40%
- Developed Terraform templates to make an automated multi-cloud disaster recovery solutions
- Product Owner and Scrum Master of an Agile software development project for an iPhone app
- Advocate the need for a transparent business vision by employing OKRs and helped to align cascading team OKRs down through the organisation
- Automated the provisioning of on-premise Kubernetes clusters and build pipelines using Matchbox, Bash and Helm templating
Qualifications and education:
2020 - Kubernetes Certified Applications Developer
2020 - Kubernetes Certified Administrator
2018 - AWS Certified Developer Associate
2018 - Agile Certified Practitioner
2008 - 1st class degree in Electronic Engineering and Cybernetics
Please get in touch to if you think my background can be helpful to you.
A full-stack engineer with a background that lends itself to helping companies stay lean and connected whilst scaling up customers and services.
With 7 year's experience in hands-on DevOps roles in both Finance and Data Analytics I've learnt to provide frequent updates to clients when delivering technical initiatives by accurately estimating tasks, developing simple/clean code and document whilst delivering projects within my commitments to time.
I have been heavily involved in building scalable microservices on Kubernetes, migrating infrastructure and services to the cloud and creating build environments for growing teams of developers.
Skills:
Clouds - AWS, Azure, GCP, DigitalOcean, on-premise
Container orchestration - Kubernetes (k8s) Rancher, Docker Swarm
Continuous delivery/integration - Jenkins, DroneIO, Helm, Kubernetes, GoCD, Tilt, Earth, Earthly
Database - Elasticsearch, MongoDB, MySQL, MSSSQL, Postgres
Applications - Docker, Nginx, LAMP, CoreOS, Terraform, Tableau, MS Exchange, Nutanix, VMWare Horizon/vCenter, Kafka, Atlassian Jira/Confluence, Microsoft SQL Server, Microsoft Exchange CloudFormation, Hugo
Networking: DNS, DHCP, VLANs, NAT, any Cisco Switch/Firewall configuration
Languages:
Strong - PowerShell, Bash, Python, YAML, JSON
Intermediate - GoLang, NodeJS, JavaScript, HTML, CSS, C#, TSQL
Basic - Haskel, OCaml, Rust
Achievements (in the last 2 years):
- Developed Tilt and Earthly tools which provided an environment agnostic CI/CD pipelines
- Re-engineered SAAS architecture - migrating all production to microservices on Kubernetes reducing the company's total software expenditure by 40%
- Developed Terraform templates to make an automated multi-cloud disaster recovery solutions
- Product Owner and Scrum Master of an Agile software development project for an iPhone app
- Advocate the need for a transparent business vision by employing OKRs and helped to align cascading team OKRs down through the organisation
- Automated the provisioning of on-premise Kubernetes clusters and build pipelines using Matchbox, Bash and Helm templating
Qualifications and education:
2020 - Kubernetes Certified Applications Developer
2020 - Kubernetes Certified Administrator
2018 - AWS Certified Developer Associate
2018 - Agile Certified Practitioner
2008 - 1st class degree in Electronic Engineering and Cybernetics
Please get in touch to if you think my background can be helpful to you.
Markets
United Kingdom
Links for more
Once you have created a company account and a job, you can access the profiles links.
Industries
Language
English
Fluently
Ready for
Available
My experience
2020 - ?
temp
DevOps Engineer
Veterinary Medicines Directorate gov.uk.
Veterinary Medicines Directorate gov.uk.
The Veterinary Medicines Directorate (VMD) protects animal health, public health and the environment, and is the sole governing body for medical approvals in the UK.
• Redesigned Jenkins workflow and deployment, deploying it on Kubernetes to speed up build times considerably
• Designed Terraform modules and templates for AWS resources; S3 disaster recovery replication, EKS cluster deployment with OIDC
capabilities and Route53 records for Content Distribution Network (CDN)
• Implemented Kubernetes cluster monitoring by deploying Grafana, Prometheus and Kiali using Istioctl. Automated imports of additional Grafana dashboards and data sources in Helm logic
• Developed environment and region agnostic Helm templates for applications; Nexus3, ExternalDNS (CDN) and .Net core API
• Developed Terraform templates to deploy secure Azure environments; vNet, MsSQL, public/private subnets and Virtual Machines
Technologies: AWS, Azure, Kubernetes, Terraform, Helm, Docker
Languages: Python, Bash, Go templating, HCL
• Redesigned Jenkins workflow and deployment, deploying it on Kubernetes to speed up build times considerably
• Designed Terraform modules and templates for AWS resources; S3 disaster recovery replication, EKS cluster deployment with OIDC
capabilities and Route53 records for Content Distribution Network (CDN)
• Implemented Kubernetes cluster monitoring by deploying Grafana, Prometheus and Kiali using Istioctl. Automated imports of additional Grafana dashboards and data sources in Helm logic
• Developed environment and region agnostic Helm templates for applications; Nexus3, ExternalDNS (CDN) and .Net core API
• Developed Terraform templates to deploy secure Azure environments; vNet, MsSQL, public/private subnets and Virtual Machines
Technologies: AWS, Azure, Kubernetes, Terraform, Helm, Docker
Languages: Python, Bash, Go templating, HCL
Content, UP, Go, Net core, Cdn, Logic, Health, Monitoring, Net, It, Network, Python, Workflow, Bash, Kubernetes, Deployment, DevOps, Jenkins, AWS, Docker, API
2019 - 2020
freelance
Automation Consultant
Bell Rock Capital Management.
Bell Rock is an SME private trading fund who make informed real estate investments by ingesting and aggregating data.
• Developed self-service single-sign-on Python analytics environment by developing and implementing; JupyterHub Kerberos
authenticator class in Python, secure encrypted keytab storage using secrets, pre authenticated AD notebooks and kernels , DFS
container mounts with custom Kubernetes CIFS volume plugin in Bash
• Deployed Kubernetes on baremetal multi-site, a dynamic storage provisioner using Heketi and GlusterFS and on-cluster maintenance
scripts host configuration, backups of ETCD and component health
• Redesigned Zero-to-JupyterHub-k8s and Enterprise Gateway to deploy into multiple namespaces
• Developed Terraform to deploy Azure resources; Azure Container Registries, Service Accounts for SSO, Virtual Machines
Technologies: Azure, Kubernetes, Terraform, Docker, GlusterFS, Heketi
Languages: Python, Bash, Go templating, HCL
• Developed self-service single-sign-on Python analytics environment by developing and implementing; JupyterHub Kerberos
authenticator class in Python, secure encrypted keytab storage using secrets, pre authenticated AD notebooks and kernels , DFS
container mounts with custom Kubernetes CIFS volume plugin in Bash
• Deployed Kubernetes on baremetal multi-site, a dynamic storage provisioner using Heketi and GlusterFS and on-cluster maintenance
scripts host configuration, backups of ETCD and component health
• Redesigned Zero-to-JupyterHub-k8s and Enterprise Gateway to deploy into multiple namespaces
• Developed Terraform to deploy Azure resources; Azure Container Registries, Service Accounts for SSO, Virtual Machines
Technologies: Azure, Kubernetes, Terraform, Docker, GlusterFS, Heketi
Languages: Python, Bash, Go templating, HCL
Python, Docker, Azure, Kubernetes, Automation, Bash, Analytics, Service, Health, Storage, Enterprise, Go
2019 - 2020
temp
Senior DevOps Engineer
Red Deer.
Red Deer is an SME private hedge fund supplying surveillance software to wealth and investment managers to improve operational
performance and compliance.
• Reengineered Jenkins CI/CD pipelines to reduce human interactions and speed up build to deployment by 60%; developed DSL
groovy libraries, migrated entire .NET core build/compile/run to docker
• Developed terraform modules to deploy AWS services; ECR repositories, docker application provisioning on EC2, ECS Logstash
cluster, schedule tasks running on Fargate spot instances
• Developed terraform to deploy Kubernetes clusters to AWS; EKS, Microk8s, Kind
• Created Python scripts populate DynamoDB entries from Secrets Manager and report to Slack with any differentials
Technologies: AWS, Kubernetes, Terragrunt, Ansible, Terraform, Docker, Git, Slack, Jenkins, CodeDeploy, Nuget, TeamCity,
Atlassian Jira/Confluence
Languages: C#, C# Make, Python, Bash, PowerShell, Groovy, TSQL, HCL
performance and compliance.
• Reengineered Jenkins CI/CD pipelines to reduce human interactions and speed up build to deployment by 60%; developed DSL
groovy libraries, migrated entire .NET core build/compile/run to docker
• Developed terraform modules to deploy AWS services; ECR repositories, docker application provisioning on EC2, ECS Logstash
cluster, schedule tasks running on Fargate spot instances
• Developed terraform to deploy Kubernetes clusters to AWS; EKS, Microk8s, Kind
• Created Python scripts populate DynamoDB entries from Secrets Manager and report to Slack with any differentials
Technologies: AWS, Kubernetes, Terragrunt, Ansible, Terraform, Docker, Git, Slack, Jenkins, CodeDeploy, Nuget, TeamCity,
Atlassian Jira/Confluence
Languages: C#, C# Make, Python, Bash, PowerShell, Groovy, TSQL, HCL
Compliance, CI / CD, UP, Manager, Logstash, Net core, Atlassian, Software, Teamcity, Net, Groovy, Confluence, Python, PowerShell, Bash, C, Kubernetes, Deployment, DevOps, Jenkins, Jira, AWS, Docker, Git
2016 - 2019
job
Head of Infrastructure and Security / Data Pad (London)
PRTG.
Slack, Jenkins, CodeDeploy,
CodeBuild, Nuget, Microsoft WSUS, VMWare vCentre, Atlassian Jira/Confluence, Coverity
Languages: C#, Bash, PowerShell, Go templating, Groovy, TSQL, YAML, JSON
JULY 2016 - MAY 2019
Head of Infrastructure and Security / Data Pad (London)
Data Pad is a small company with a large global ambition that collects data from private sources, using in-house automated market
research tools and data science they provide live analytical dashboards to give clients insight into their data.
• Maintained the company IT security policies to; financial sector standards, data vendor contractual agreements and align with regulatory bodies such as GDPR, ISO27001
• Technical lead for projects in infrastructure, database, security and development operations
• Re-engineered IaaS architecture - Migrated all business services to open source technologies which reduced total software
expenditure by 40%. Migrated the company away from expensive software vendors like Microsoft, VMware and Nutanix to open
source solutions: Kubernetes, Docker, Helm, CoreOS
• Interfacing with data science and development teams to design and implement fast and scalable machine learning platforms
• Built a centralised logging system using ElasticSearch, Fluentd, SearchKit which ingested Kubernetes docker container logs and displayed them to teams. This enabled us to remove Kubernetes UI and Kubectl permissions from developers
• Design and implemented system to authenticate AD users to front-end C# and Python applications running on Kubernetes. By
deploying IdentityServer 4.0 in Docker on Kubernetes we were able to generate short/long lived tokens for inter-service
communication and AD user authentication
• Developed baremetal Kubernetes deployment using Matchbox for PXE booting and CoreOS Systemd unit scripts for configuration.
Created Systemd unit scripts to carry out our customisations at build time; SSL certificate injection, docker-engine start-up
alterations, iSCSI connection properties and kubelet start-up parameters
• Ensured all team members had the appropriate training and mentoring for all concurrent projects
Technologies: Docker, Kubernetes, Helm, Jenkins, Maven, Apache Kafka, Rancher, IdentityServer 4.0, Nginx, Swagger, Neo4j,
AWS, Azure, Terraform, Fluentd, Elasticsearch, SearchKit, Artifactory/Xray, CoreOS, Atlassian Jira/Confluence,
Gitea, Microsoft SQL Server 2012 Standard AlwaysOn, Slack, Nuget, GitLabCI
Languages: C#, Bash, PowerShell, Go template, Groovy, Cypher, TSQL, NodeJS, Go, YAML, JSON, HTML, CSS
CodeBuild, Nuget, Microsoft WSUS, VMWare vCentre, Atlassian Jira/Confluence, Coverity
Languages: C#, Bash, PowerShell, Go templating, Groovy, TSQL, YAML, JSON
JULY 2016 - MAY 2019
Head of Infrastructure and Security / Data Pad (London)
Data Pad is a small company with a large global ambition that collects data from private sources, using in-house automated market
research tools and data science they provide live analytical dashboards to give clients insight into their data.
• Maintained the company IT security policies to; financial sector standards, data vendor contractual agreements and align with regulatory bodies such as GDPR, ISO27001
• Technical lead for projects in infrastructure, database, security and development operations
• Re-engineered IaaS architecture - Migrated all business services to open source technologies which reduced total software
expenditure by 40%. Migrated the company away from expensive software vendors like Microsoft, VMware and Nutanix to open
source solutions: Kubernetes, Docker, Helm, CoreOS
• Interfacing with data science and development teams to design and implement fast and scalable machine learning platforms
• Built a centralised logging system using ElasticSearch, Fluentd, SearchKit which ingested Kubernetes docker container logs and displayed them to teams. This enabled us to remove Kubernetes UI and Kubectl permissions from developers
• Design and implemented system to authenticate AD users to front-end C# and Python applications running on Kubernetes. By
deploying IdentityServer 4.0 in Docker on Kubernetes we were able to generate short/long lived tokens for inter-service
communication and AD user authentication
• Developed baremetal Kubernetes deployment using Matchbox for PXE booting and CoreOS Systemd unit scripts for configuration.
Created Systemd unit scripts to carry out our customisations at build time; SSL certificate injection, docker-engine start-up
alterations, iSCSI connection properties and kubelet start-up parameters
• Ensured all team members had the appropriate training and mentoring for all concurrent projects
Technologies: Docker, Kubernetes, Helm, Jenkins, Maven, Apache Kafka, Rancher, IdentityServer 4.0, Nginx, Swagger, Neo4j,
AWS, Azure, Terraform, Fluentd, Elasticsearch, SearchKit, Artifactory/Xray, CoreOS, Atlassian Jira/Confluence,
Gitea, Microsoft SQL Server 2012 Standard AlwaysOn, Slack, Nuget, GitLabCI
Languages: C#, Bash, PowerShell, Go template, Groovy, Cypher, TSQL, NodeJS, Go, YAML, JSON, HTML, CSS
Infrastructure, Apache, Bash, PowerShell, Kafka, Architecture, Service, Security, Nginx, Open source, Confluence, Groovy, ISO27001, It, Authentication, GDpr, Regulatory, Science, Development, Neo4j, Swagger, Software, Server, Atlassian, Tech lead, Go, Sql server 2012, Https, UP, Jenkins, Css, Design, Sql, Python, Machine learning, Data Science, Docker, HTML/CSS/Javascript, Operations, AWS, Jira, SQL Server, Research, JSON, Html, Azure, Deployment, VMware, Training, Mentoring, NodeJS, Kubernetes, C, Database, UI, Microsoft SQL Server, Microsoft SQL, Elasticsearch
2015 - 2016
job
Systems Integration Manager
Data Pad.
Sole administrator of 10 x MSSQL databases and HP Vertica NoSQL database. Managing and optimising queries with joins on 70M+
rows
• Migrated 3 x companies of size 20+ from on-premise Exchange to Office365 to reduce costs and maintenance overheads
• Responsible for writing and maintaining domain and security policies for employee handbooks
• Developed a CI/CD pipeline for database schema updates using Jenkins and RedGate PowerShell modules
• Carried out security audits and risk analysis for all new company initiatives and objectives
• Developed C# API authorisation layer for MS SQL using LINQ and Mvc, providing data governance and auditing on queries
2
• Migrated monolithic applications to containerised microservices by moving them to Rancher, Droneio and NodeJS. Setup build
pipelines to use Nexus for docker image, binary and repository
• Developed automated data import and export processes and systems monitoring in PowerShell and C#
• Maintained cisco firewall and switch configurations for the office, datacentre and cloud networks
Technologies: Rancher, Droneio, Docker, Jenkins, Nexus, Kubernetes, Tableau, Microsoft SQL Server 2012 Standard,
RedGate, HP Vertica, Atlassian Jira/Confluence, Teradici, Leostream, AWS, Azure, VMware vCentre and Horizon View, Nutanix, NEXT, MS Exchange 2012, Nginx
Languages: PowerShell, Bash, TSQL, C#, NodeJS
rows
• Migrated 3 x companies of size 20+ from on-premise Exchange to Office365 to reduce costs and maintenance overheads
• Responsible for writing and maintaining domain and security policies for employee handbooks
• Developed a CI/CD pipeline for database schema updates using Jenkins and RedGate PowerShell modules
• Carried out security audits and risk analysis for all new company initiatives and objectives
• Developed C# API authorisation layer for MS SQL using LINQ and Mvc, providing data governance and auditing on queries
2
• Migrated monolithic applications to containerised microservices by moving them to Rancher, Droneio and NodeJS. Setup build
pipelines to use Nexus for docker image, binary and repository
• Developed automated data import and export processes and systems monitoring in PowerShell and C#
• Maintained cisco firewall and switch configurations for the office, datacentre and cloud networks
Technologies: Rancher, Droneio, Docker, Jenkins, Nexus, Kubernetes, Tableau, Microsoft SQL Server 2012 Standard,
RedGate, HP Vertica, Atlassian Jira/Confluence, Teradici, Leostream, AWS, Azure, VMware vCentre and Horizon View, Nutanix, NEXT, MS Exchange 2012, Nginx
Languages: PowerShell, Bash, TSQL, C#, NodeJS
Office, MVC, Bash, Integration, PowerShell, Firewall, Security, Nginx, Confluence, LINQ, Monitoring, Microservices, Risk analysis, Server, Atlassian, Administrator, Office365, Sql server 2012, Processes, Vertica, Manager, CI / CD, VMware, API, Writing, Docker, AWS, Jira, SQL Server, Jenkins, Azure, Exchange, Cisco, Sql, NodeJS, Kubernetes, C, MSSQL, Database, Microsoft SQL Server, Microsoft SQL, Cloud, Tableau, NoSQL
2013 - 2015
job
Business Applications Engineer
G-Research.
G-Research is one of the top trading hedge funds in the UK whose success stems from building alphas and investing in cutting edge IT
technology and automation to get the edge on competitors.
• Designed and deployed a secure offline accounting domain for SAP Business One and CoreSuite Cube. Accomplished using 3 node
ESXi VMware vCentre cluster which hosted; 2 x Microsoft Exchange/Domain controllers, 2 x FileServer, DFS, 2 x VNC jump points, 2 x
Secure Monitoring servers
• Implemented RightItNow alert management system in HA, using SNMPProxy and ActiveMQ, reducing company email traffic by 700%
for an estate with over 5,000 entities. The application setup and failover procedures I created were adopted by the software vendor
for their official failover documentation
• Investigated mismatching trade data in Tradar and liaising with front of office and development teams to resolve discrepancies with the application or data import processes
• Developed PowerShell cmdlets and daily, weekly reports to keep IT Support teams better informed
• Focused on security issues and improvements for applications, offices, datacentres and colocations
• Sole team in charge of all alterations and workflow changes to Jira, Confluence, Fisheye, Crucible
Technologies: MDaemon, SAP Business One, Tradar, Eze, Tidal, RightItNow, SNMPProxy, ActiveMQ, Microsoft Exchange / Sharepoint, SolwarWinds, Citrix XenServer, VMware vCentre/Horizon View, Atlassian suite
Languages: PowerShell, Bash
technology and automation to get the edge on competitors.
• Designed and deployed a secure offline accounting domain for SAP Business One and CoreSuite Cube. Accomplished using 3 node
ESXi VMware vCentre cluster which hosted; 2 x Microsoft Exchange/Domain controllers, 2 x FileServer, DFS, 2 x VNC jump points, 2 x
Secure Monitoring servers
• Implemented RightItNow alert management system in HA, using SNMPProxy and ActiveMQ, reducing company email traffic by 700%
for an estate with over 5,000 entities. The application setup and failover procedures I created were adopted by the software vendor
for their official failover documentation
• Investigated mismatching trade data in Tradar and liaising with front of office and development teams to resolve discrepancies with the application or data import processes
• Developed PowerShell cmdlets and daily, weekly reports to keep IT Support teams better informed
• Focused on security issues and improvements for applications, offices, datacentres and colocations
• Sole team in charge of all alterations and workflow changes to Jira, Confluence, Fisheye, Crucible
Technologies: MDaemon, SAP Business One, Tradar, Eze, Tidal, RightItNow, SNMPProxy, ActiveMQ, Microsoft Exchange / Sharepoint, SolwarWinds, Citrix XenServer, VMware vCentre/Horizon View, Atlassian suite
Languages: PowerShell, Bash
Node, Processes, Atlassian, Software, Office, Development, Monitoring, Support, It, Confluence, Technology, Security, Workflow, Jira, PowerShell, Bash, Citrix, Management, Automation, VMware, SharePoint, Exchange, SAP, Research, It support
2005 - 2011
job
Systems Manager
Crosby Composites.
UK)
• Created an internet browsing environment for 50 users using VMware vCenter to ensure network separation, further securing their
private domain
• Built tailored workstations based on employee requirements
• On-going domain maintenance on GPOs, domain and application updates, proxy configuration
• Responsible for carrying out updates to the company website using Dreamweaver, CSS and HTML
• Moved the whole office to a wired network and extended WIFI network to new office block
Technologies: Microsoft Exchange, Sharepoint, VMware vCentre and Horizon View, Dreamweaver
3
Languages: CSS, HTML
• Created an internet browsing environment for 50 users using VMware vCenter to ensure network separation, further securing their
private domain
• Built tailored workstations based on employee requirements
• On-going domain maintenance on GPOs, domain and application updates, proxy configuration
• Responsible for carrying out updates to the company website using Dreamweaver, CSS and HTML
• Moved the whole office to a wired network and extended WIFI network to new office block
Technologies: Microsoft Exchange, Sharepoint, VMware vCentre and Horizon View, Dreamweaver
3
Languages: CSS, HTML
Html, Css, HTML/CSS/Javascript, Exchange, SharePoint, VMware, Website, Network, Office, Internet, WiFi, Manager
My education
2008
-
2011
Reading University
Bachelors, Electronic Engineering and Cybernetics
Bachelors, Electronic Engineering and Cybernetics
2005
-
2008
Wellingborough School
Secondary, Mathematics
Secondary, Mathematics
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