Mark Mickan Email & Phone Number

Adelaide, South Australia, Australia

As a Staff DevOps Engineer at Open LMS, I play a pivotal role in ensuring the reliability, security, and efficiency of our infrastructure. My responsibilities encompass incident response, security enhancements, cost optimisation, and infrastructure maintenance and development.𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀• Cost Optimisation: Designed and deployed a cloud infrastructure solution to replace Elasticache with Redis Cluster, resulting in an annual savings of $180,000.• Centralised IAM Management: Developed and implemented an AWS bastion account to centralise IAM Users across 20 AWS accounts, streamlining user management and enhancing security.• SSH Certificate-Based Authentication: Created and deployed an innovative SSH certificate-based authentication system using HashiCorp Vault, automating server configuration and certificate signing.• Infrastructure Overhaul: Successfully replaced outdated infrastructure from an acquired company, addressing critical security and reliability issues, including unsupported operating systems and lack of configuration management, significantly reducing on-call and support loads.

Adelaide, South Australia, Australia

During my tenure at Blackboard, I evolved from a Senior System Administrator to a Staff DevOps Engineer, contributing to a range of projects that enhanced the scalability, security, and efficiency of our infrastructure. My key responsibilities included incident response, security management, monitoring, and infrastructure as code.𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀• Cloud Migration: Led the successful migration of our infrastructure from private data centres to AWS, enhancing scalability and reducing costs.• Containerisation and Orchestration: Introduced HashiCorp Consul, Nomad, and Vault to support the containerisation and orchestration of workloads, improving deployment efficiency.• Golang Storage Middleware: Reimplemented Golang storage middleware to support multiple storage backends, enabling seamless cutover from Riak in private data centres to AWS S3.• Configuration Management: Reviewed and restructured puppet configurations using the role/profile pattern, significantly improving maintainability.• Infrastructure as Code: Pioneered the use of HashiCorp Terraform for AWS infrastructure configuration, standardising our deployment processes.• Monitoring Enhancement: Designed and built a highly available Sensu monitoring cluster, migrating from Nagios to enhance our monitoring capabilities.

Adelaide, South Australia, Australia

In my leadership roles at Blackboard, I was a core member of the leadership team for the Adelaide Open Source division, overseeing technical operations, application support, and help desk teams during a period of rapid growth and scaling.𝗞𝗲𝘆 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀• Leadership: Guided technical operations and support teams through significant product adoption and scaling phases.• Strategic Oversight: Directed the integration of NetSpot into Blackboard, aligning operational strategies with company goals.

Adelaide, South Australia, Australia

As a senior member of the technical operations team at NetSpot, I managed Linux servers and WebCT applications, contributing to the sooth operation of our systems.𝗞𝗲𝘆 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀• System Administration: Managed Linux servers and WebCT applications on Linux and Solaris systems.• Telephony Configuration: Configured and supported an Asterisk-based telephone system, ensuring reliable communication infrastructure.

Adelaide, South Australia, Australia

At Voicetronix, I developed telephony software for VoIP using C and created web-based UIs in Perl for telephony applications.𝗞𝗲𝘆 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀• Develop telephony software for VoIP in C• Develop web-based UI in Perl for Voicetronix telephony applications• Manage internal telephone system

Adelaide, South Australia, Australia

As the first developer hired, I collaborated with the technical owner to build the initial product, focusing on telephony middleware in C and Perl.𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀• Initial Product Release: Played a key role in the initial release of the product• Cost Optimisation: Developed a call routing solution for a customer to optimise costs for high-volume outbound calls by routing the through the cheapest provider based on the prefix

Adelaide, South Australia, Australia

Developed and interactive company website in PHP.

Adelaide, South Australia, Australia

Developed web applications in Perl and PHP for customer projects and provided customer support.

Adelaide, South Australia, Australia

As the sole system and network administrator in an early stage bootstrapped startup, I managed hardware and networking, provided 24/7 on-call responses, and handled customer support and supplier management.𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀• Hosting Migration: Successfully migrated hosting service between sites to capitalise on the rollout of fibre-optic connectivity in the CBD• Email Server Deployment: Deployed a Linux-based company email server, including webmail, spam detection, and virus filtering, and migrated from Microsoft Exchange• Email Hosting Platform: Developed a platform for email hosting services, including a management UI built in PHP

Adelaide, South Australia, Australia

Worked with clients to understand their needs and develop proposals for web development, and provided custom web development in Perl.𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀• Web Framework Development: Developed a web framework using Apache+mod_perl and leveraged this for numerous customer sites