Marcus Hall Email & Phone Number

Dublin, Ie

Dublin, Ie

In this role at Demonware, I played a key role in adopting Google Cloud Platform (GCP) as Activision Blizzard’s preferred cloud provider. This transition from AWS focused on developing a robust Hybrid-Cloud strategy.- Led the design of a GCP framework tailored to our hybrid approach.- Worked closely with Activision Blizzard teams to align our cloud architecture, reducing technical overhead and streamlining operations.- Facilitated the shift to Kubernetes (GKE) for infrastructure services, boosting our operational agility.- Ensured strong governance and compliance through close collaboration with internal auditors, maintaining the integrity of our cloud operations.

Dublin, Ie

Drawing on my experience in Site Reliability Engineering (SRE) and DevOps, I worked closely with my team to architect our services with a focus on enhancing reliability.- Simplified infrastructure management by integrating HashiCorp tools such as Terraform, Consul, Vault, and Packer for provisioning infrastructure.- Developed and maintained Python and Golang applications to automate resource creation and configuration via REST APIs and custom Terraform Providers.- Enhanced the setup of VMs and Linux Containers (LXC), promoting efficient resource allocation and consistent deployments through immutable infrastructure.- Overhauled our internal DNS solution using Bird BGP, PowerDNS, dnsdist, and Consul, improving service discovery and configuration.- Focused on making our services more user-friendly, reliable, and easy to manage, which led to improved customer satisfaction and smoother operations through self-service capabilities.

Stockholm, Se

In my role within Klarna's Cloud Automation team, I played a key role in supporting the company’s transition to a cloud-only strategy. My work focused on integrating AWS resource provisioning with an emphasis on speed, agility, and compliance.- Led the development of the AWS Account Vending Machine using serverless technologies, enabling scalable, self-service account provisioning.- Built an AWS IAM Policy management tool to streamline compliance and empower teams with self-service capabilities.- Redesigned the SSL/TLS certificate workflow by integrating AWS Certificate Manager and DigiCert APIs, ensuring secure and efficient certificate management.Provided architectural guidance for payment and banking services, aligning them with our cloud-only strategy.

Stockholm, Se

As a member of the Core Services team, I contributed to maintaining and building a resilient infrastructure stack with strict uptime and compliance requirements in the FinTech sector. Our primary focus was automating and streamlining deployments and configurations using Ansible and Python-based services.- Ensured 24/7 operations across multiple data centers through an active/active setup, contributing to automation efforts that facilitated both physical and virtual server provisioning.- Worked on a data center migration project, coordinating with procurement teams to acquire necessary licenses, hardware, and solutions, ensuring a seamless transition.

As a Full-Stack Developer at Sportnik AB, I contributed to two major projects that highlighted my ability to develop comprehensive, scalable solutions.- CRM Solution for Athletics Clubs: Led a multi-year project to build a custom CRM solution tailored for athletics clubs in Sweden. This application was built using a multi-tier LAMP stack, including Zend Framework, Doctrine (ORM), and a combination of Apache, Nginx, and other technologies to ensure optimal performance and scalability.- Backend REST API for Mobile Apps: Developed a REST API backend for Mobile and Web applications, powering an Apache Cordova Web App for Android and iOS. Using Python Flask and SQLAlchemy, I designed the API to be lightweight, secure, and optimized for low bandwidth, resulting in a user-friendly application.These solutions enabled companies to effortlessly organize events and handle payments, including custom ad platforms and sales features that enhanced the overall experience for administrators and their clients.

During my decade at SizeIT, I was designing and operating ISP and hosting solutions using Gentoo Linux, Red Hat, and Open Source Software.- Developed and managed networking solutions for VLAN, GVRP, and Linux traffic shaping using Bash, Python, PHP, and MySQL.- Led virtualization initiatives with Ganeti, KVM, Xen, and DRBD for reliable, scalable services.- Managed hosting and co-location services, providing high-performance solutions tailored to client needs.Beyond my core role, I actively contributed to company operations, driving the development of innovative, value-added services.

Linux System Administration, Linux And Cicso Networking

It And Physics