Tenea Tecnologías

Systems Lead · DevOps Architect · Web Developer

Sep 2021 – Feb 2025 · L'Hospitalet de Llobregat · Hybrid

Three and a half years in which I walked the whole way from developer to systems lead, by way of DevOps architect. I started writing applications and ended up deciding the infrastructure they ran on, which is why I now design with both in mind at once.

Systems and Infrastructure Lead

Jul 2024 – Feb 2025

IT management, strategy and leadership

  • Project management and the technical client relationship.
  • Leading the systems team: task tracking, support and mentoring.
  • Strategic IT infrastructure design, with technical evaluation and procurement of hardware and software for expansions and improvements.
  • Capacity and performance reporting, improvement plans and management of critical incidents with vendors and suppliers.

Microsoft and Active Directory architecture

  • Design and implementation of multi-site Active Directory architectures, with replication management and site topology.
  • Planning and execution of cross-forest migrations and schema upgrades.
  • Identity management, single sign-on (SSO) upgrades and corporate-level user administration.

DevOps Architect

Nov 2022 – Feb 2025

Cloud infrastructure and systems administration

  • Deployment and management of resources on AWS, Azure, Google Cloud and IBM Cloud, orchestrated with Kubernetes and Docker.
  • Proxmox and VMware virtualization clusters, both internal and client-facing.
  • Advanced Linux and Windows server administration: storage, filesystems, shared drives, hardening and host-level firewalls.
  • Implementation of secure network protocols and services (SSH, SFTP, FTP, NFS) and centralized authentication.

Development, integration and data

  • Building and maintaining web applications in .NET Core, PHP (Symfony, Laravel, Yii), Python (Django) and Java/Kotlin (Spring Boot), with React and Next.js frontends.
  • Native mobile development for iOS (Swift, Objective-C) and Android (Java, Kotlin).
  • Event-driven architectures with Apache Kafka as the data bus.
  • Automation of system operations with Bash, PowerShell and Python.

Operations, capacity and continuity

  • Monitoring with CheckMK, Nagios and Icinga2.
  • Availability and performance reporting and capacity plans to support decision-making.
  • Design of backup, at-rest encryption, recovery and continuity plans.
  • Diagnosis, resolution and escalation of critical incidents, with technical liaison to vendors and suppliers.

Web Developer

Sep 2021 – Nov 2022

Full-stack and mobile development

  • Programming web applications across multiple stacks: .NET (Core and Framework), PHP (Symfony, Laravel, Yii), Java/Kotlin (Spring Boot), Python (Django) and frontends in React and Next.js.
  • Creating and maintaining native mobile applications for iOS and Android.
  • Application migration projects and content management with a CMS (Drupal).

First steps into infrastructure

  • Deployment and orchestration of services with Kubernetes and Docker.
  • Configuration of monitoring agents, backup systems and task schedulers.
  • Incident diagnosis at operating-system level and analysis of recurring problems to build improvement plans.
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