About the Authors
Mattias Hemmingsson is a seasoned IT professional with over two decades of experience in designing, building, and securing modern IT infrastructure. With deep roots in cloud computing, DevOps, and system architecture, he has successfully led the development and operations of high-availability systems for mission-critical environments, especially within the financial sector, where stability and performance are non-negotiable.
Mattias specializes in a wide range of technologies, including Kubernetes, Docker, Jenkins, GitLab CI, and cloud platforms such as AWS and Google Cloud. His skill set spans server orchestration, infrastructure as code, and containerized application delivery. A true advocate for developer productivity, he has implemented CI/CD pipelines, automated monitoring systems, and scalable platform services that have helped teams deploy faster with greater reliability.
Security is a cornerstone of Mattias’s expertise. He has worked extensively in IT security and compliance, securing high-performance payment gateways and writing security policies to meet industry and regulatory standards. He actively manages vulnerability assessments, runs enterprise-grade security scanners, and participates in incident response operations. His security knowledge bridges the technical and procedural, ranging from configuring firewall rules to training development teams in secure coding practices.
As a full-stack developer, Mattias works with both Python and JavaScript, building frontend and backend systems using popular frameworks like Next.js and Vue. He brings a unique blend of hands-on coding ability and infrastructure mastery, making him equally at home writing applications or deploying them in scalable, production-ready environments.
Mattias also plays an active role in the tech community. He co-hosts the DevSecOps Talks podcast and YouTube channel, where he shares insights on the intersection of development, operations, and security. He teaches classes on DevSecOps practices and serves as the local organizer for one of Stockholm’s tech meetups, helping others stay informed and connected in the ever-evolving world of IT.
Through his blog, Life and Shell, Mattias documents his professional journey, sharing practical tips and deep dives into real-world solutions for fellow developers, sysadmins, and security professionals. His work reflects a passion not just for running services, but for securing them, ensuring they are both compliant and resilient.
Whether building infrastructure, writing code, or leading training sessions, Mattias brings a comprehensive understanding of modern systems from their initial setup to their long- term security and scalability.