Jonas Stein
@jonasstein
Senior software and platform engineer securing cloud-native platforms and leading reliable systems at scale.
IrelandWhat I'm looking for
I’m a dynamic Senior Software Engineer and Platform Engineer with 15+ years of experience managing globally distributed teams. I specialize in architecting, securing, and operating cloud-native platforms and services, with a strong foundation in computer science, computer networks, and cyber security.
At IBM (January 2024–Present), I spearheaded deployment of an Istio service mesh on Kubernetes and OpenShift to enable secure inter- and cross-cluster communication with advanced encryption and strict ingress/egress policies. I engineered secure, compliant infrastructure on IBM Cloud using VPC, VPE, Terraform, OpenShift, and Kubernetes, and I’ve mentored junior developers while improving reliability and security through strategic on-call rotations. Through code reviews, bug resolution, and architecture optimization, I increased automation coverage and achieved time savings of up to 80%.
As an AI / Anomaly Detection Tech Lead (January 2022–December 2023), I directed an anomaly detection system using timeseries data, improving prediction accuracy for customer-impacting events by 30%. I owned the end-to-end architecture—data ingestion, feature engineering, model training, and evaluation—and collaborated with stakeholders to define success metrics that improved early incident detection and reduced operational impact.
Earlier at IBM, I led application security and secure development practices by ensuring 100% compliance with internal standards, driving vulnerability remediation, and automating deployment and monitoring with Python, Go, Bash, and JavaScript. I also built Go microservices and RESTful APIs with IAM and ServiceNow, created reusable encryption and messaging libraries for Kafka and RabbitMQ, and supported fullstack development with Node.js using Cloudant and PostgreSQL. My engineering approach stays grounded in observability, security-by-design, and continuous improvement across production reliability.
Experience
Work history, roles, and key accomplishments
Spearheaded deployment of Istio service mesh on Kubernetes and OpenShift, enabling secure inter- and cross-cluster communication with strict ingress/egress policies. Engineered compliant infrastructure on IBM Cloud with VPC, VPE, Terraform, OpenShift, and Kubernetes, mentoring 2 junior developers and improving automation coverage with time savings of up to 80%.
Directed development of a time-series anomaly detection system, increasing prediction accuracy for customer-impacting events by 30%. Built the end-to-end pipeline (data ingestion, feature engineering, model training, evaluation) and aligned stakeholders on success metrics to improve early incident detection.
Led application and system security efforts, achieving 100% compliance with internal security standards and processes. Conducted security reviews, drove vulnerability remediation, and built Go microservices and REST APIs with IAM and ServiceNow integration, while automating deployment/configuration/monitoring using Python, Go, Bash, and JavaScript.
Developed fullstack Node.js applications using Cloudant (NoSQL) and PostgreSQL for storage back ends. Built backend services, UI features, and deployment automation to improve release cycles and user experience.
Implemented system, application, and network monitoring across Solaris, Linux, Windows, mainframes, and network/storage devices, automating monitoring tasks with Bash and Perl. Led migrations for a legacy monitoring replacement and hardware appliance upgrade with database migration, upgrading security across 200+ servers and presenting results to SaaS leadership.
Administered IBM Control Desk for incidents, problems, changes, service requests, and tasks, optimizing workflow efficiency. Configured databases, managed users, customized the UI, and automated report generation using SQL and Jython.
IT Intern & Research Volunteer
Federal University Of Santa Maria
Mar 2010 - May 2012 (2 years 2 months)
Administered Ubuntu Linux, deployed networks, and automated campus infrastructure using Bash scripting. Conducted research in secure authentication/authorization, created LDAP deployment scripts adopted by educational institutions, built a local apt-get repository to accelerate package distribution, and authored papers on secure communication.
Education
Degrees, certifications, and relevant coursework
University College Dublin
Master of Science, Cloud & Machine Learning
2018 - 2020
Completed an MSc in Cloud & Machine Learning at University College Dublin from 2018 to 2020.
National College of Ireland
Higher Diploma, Cyber Security
2017 - 2018
Earned a Higher Diploma in Cyber Security from the National College of Ireland from 2017 to 2018.
Federal University of Santa Maria
Degree, Computer Networks
2009 - 2012
Studied Computer Networks at the Federal University of Santa Maria from 2009 to 2012.
Tech stack
Software and tools used professionally
Availability
Location
Ireland
Portugal
Spain
BrazilSocial media
Job categories
Skills
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