Curriculum Vitae Sergio Talens-Oliag Profile Senior DevOps and Platform Engineer with over 30 years of experience in designing, operating and automating cloud and on-premises infrastructures. Strong background in systems administration, platform engineering, security and automation. Contributor to the Debian project and author of technical articles and conference talks. Experienced in teams management. Contact o Email: sto@mixinet.net o Phone: (+34) 647 73 82 60 o Blog: https://blogops.mixinet.net/ Education o Degree in Computer Science -- Universidad Politécnica de Valencia (UPV) o A.B.D., Distributed and Parallel Computation (DSIC, UPV) o Advanced Studies Diploma (D.E.A.), Interdisciplinary Doctorate in Communication (Universidad de Valencia, UV) Core competencies o Cloud: AWS, GCP o Containers & Orchestration: Docker, Kubernetes (EKS, GKE) o IaC & GitOps: Terraform, Helm, Helmfile o IaaS: OpenStack, Proxmox o CI/CD: GitLab CI, GitHub Actions o Observability: Prometheus, Grafana o Security & Secrets: Vault, cert-manager o Databases & Messaging: PostgreSQL, Cassandra, Kafka, Redis o Languages & Automation: Python, Bourne shell, Go, Java, Node.js o Tools: Ansible, Git, Docker, KVM, CEPH Professional experience VASS -- Senior DevOps Engineer (Jun 2024 - present) https://vasscompany.com/ o Collaborate on design and operation of development and production infrastructures in AWS and GCP. o Implement infrastructure as code (Terraform) and packaging (Helmfile); automate platform provisioning and deployments. o Evaluate, configure and deploy Kubernetes platform components (cert-manager, EKS, GKE, external-dns) and observability/security tooling (Prometheus, Grafana, Vault). o Support application teams with CI/CD pipelines (GitLab CI, GitHub Actions) and automation code. Intelygenz / VASS -- Senior DevOps Engineer (Mar 2023 - Jun 2024) https://intelygenz.com/ o Worked on Zenith, a banking PaaS: platform components, CI/CD workflows and deployment and operations guides. o Contributed to infrastructure automation, Kubernetes platform hardening and deployment stability improvements. Kyso Operations Europe Limited -- Senior DevOps Engineer (Jan 2022 - Sep 2023) https://kyso.io/ o Built the self-hosted enterprise distribution of Kyso for customers (container images, packaging, marketplace artifacts). o Wrote deployment and operations guides; supported customer on-boarding and upgrades. o Implemented CI/CD practices and security-conscious image builds. Curelator Inc. -- Consultant, Backend Development Team (Aug 2021 - Jan 2022) https://n1-headache.com/ o Implemented backend features, participated in code reviews and release activities as a Python developer. Agile Content S.A. -- IT Senior Operations Architect (Jan 2020 - Jul 2021) https://www.agilecontent.com/ o Set up CI/CD and deployment infrastructure for the AgileTV platform using GitLab, Docker and Kubernetes. o Developed deployment tooling and managed platform services (nginx, HAProxy, PostgreSQL, Prometheus, ELK). Instituto Tecnológico de Informática (ITI), Universidad Politécnica de Valencia https://www.iti.es/ o Director, Information Systems Department (Mar 2006 - Jan 2020): o Managed systems administration and application teams; responsible for IaaS (OpenStack, Proxmox), container orchestration (Kubernetes), and core services (DNS, LDAP, mail, backups). o Led development and integration of internal applications (Project Execution Manager, Web Identity Manager) and GitLab/Gitea hook processing (Golang). o Director, Free Software, Systems and Security Area -- FS³A (May 2010 - Dec 2014) o Information Systems Manager (Mar 2006 - Apr 2010) Academic and earlier professional roles o Part-time lecturer, Departamento de Informática, Universidad de València (multiple periods: 2004-2019): Security, Computer Networks, Databases, Operating Systems labs. o Computer Science Analyst, T-Systems S.A. (Jan 2004 - Mar 2006): LliureX distribution integration and packaging. o Computer Security Consultant, Tissat S.A. (Dec 2002 - Dec 2003) o Senior Programmer roles at iBC and iSOCO (2000-2002) o Researcher, ITI (1998-2000) o Freelance system administrator (1995-1998) Selected projects o Zenith -- PaaS for Banking environments (platform automation, CI/CD) o GitLab/Gitea hook processing system (Golang): https://salsa.debian.org/sto/json2file-go o Multi-application LDAP synchronization tooling (Python + Ansible) o Web Identity Service (Python; HTTP Basic Auth and JWT integration) o LliureX -- contributions to custom GNU/Linux distribution for public administration Talks & publications o Author of technical articles on systems administration, security and free software. Examples and links available on personal homepage. o Conference talks and lectures (Conferencia Internacional de Software Libre, Jornades de Programari Lliure at the UPC, academic seminars). o Book: INTERNET. Redes de Computadores y Sistemas de Información (ITP-Paraninfo, 1997). Courses taught o Introduction to Docker & Kubernetes -- UPV administration (2019-2020) o DevOps with GitLab, Docker and Kubernetes -- ITI (2019) o Advanced/Basic Linux for Administrators -- ITI (2016) o LPIC-1 preparation courses (2010, 2011, 2015, 2016) Languages o Spanish -- native o English -- C2 (Certificate of Proficiency, Cambridge, Jun 2023) o Catalan / Valencian -- high (written & spoken) o German -- basic (A2, Official Languages School) Other activities o Debian Developer and open source contributor o Personal technical blog: https://blogops.mixinet.net/ o Homepage at the University of Valencia: https://www.uv.es/sto/