Architecture & Quality
- Maintainable and scalable software systems
- Clean Architecture and Design Patterns
- Code Quality and Technical Debt Management
Hi, I'm
Sergio Fernández
Senior DevOps Engineer
Senior software engineer specialized in creating scalable and efficient solutions. I transform complex ideas into robust and high-quality digital products.
About Me
Learn about my journey as a software engineer and my passion for technical excellence
Sergio Fernández
Senior DevOps Engineer
Hi! I'm Sergio, I've been passionate about technology since I was very young. As a child, my curiosity led me to take apart everything I could get my hands on -radios, remote-controlled cars, remotes, even televisions- to understand how they worked inside. That same inquisitive spirit led me to get started with computers at the age of 12, when the first computer arrived home. Since then, I have not stopped learning, experimenting and sharing knowledge, actively participating in communities and forums such as APP Informática and Coolmod.
Currently, I am a Senior DevOps Engineer with more than 8 years of experience, and I have had the opportunity to lead teams since my professional beginnings. In my first position as a junior programmer, I was promoted in just three months to lead a team of four people. Since then, I have continued to develop as a technical reference, leading high-impact initiatives in both software architecture and development processes.
My focus is oriented to create quality software, implement scalable and efficient solutions, and coordinate teams under agile methodologies to achieve concrete goals aligned with the business. Today, I lead a team of four people with whom I manage the daily development, ensuring code quality and fostering an environment of continuous improvement.
I am convinced that technology should not only work well, but also be built well. And that is the philosophy I apply in each project.
My professional career is built on the constant pursuit of technical excellence and continuous growth. I firmly believe in the power of technology to transform ideas into real solutions that generate positive impact.
Constant InnovationCode QualityDevOps & CloudTeamwork
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Years of Experience
In software development
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Team Members
Led across different projects
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Age of Initiation
First contact with computing
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% Reduction
Infrastructure costs
Areas of Specialization
DevOps & Monitoring
- CI/CD Pipelines and Automation
- Infrastructure as Code and Containerization
- System Monitoring and Performance Optimization
Technical Leadership
- Technical Leadership and Team Management
- Resource Planning and Stakeholder Management
- Mentoring and Professional Development
Tech Stack
The technologies and tools I master to create exceptional solutions
JavaScript frontend 
TypeScript frontend 
React frontend 
Redux frontend 
Next.js frontend 
Node.js backend 
Python backend 
Java backend 
Spring Boot backend 
C++ backend 
Go backend 
Flask backend 
Django backend 
FastAPI backend 
Jest testing 
Cypress testing 
Selenium testing 
D3.js frontend 
Docker devops 
Jenkins devops 
GitHub Actions devops 
Heroku cloud 
Vercel cloud 
AWS cloud 
Google Cloud cloud 
Git tools 
MySQL database 
PostgreSQL database 
MongoDB database 
Oracle database 
VS Code tools 
IntelliJ IDEA tools 
PyCharm tools 
Jira tools 
Confluence tools 
Bitbucket tools Languages
Languages & Frameworks
- JavaScript/TypeScript Expert
- Python Expert
- Java (SpringBoot) Advanced
- React/Redux/Next.js Expert
- Node.js Expert
- Shell Scripting Expert
- Astro Advanced
- Go Intermediate+
DevOps & Infrastructure
Infrastructure & CI/CD
- Docker & Kubernetes Advanced
- CI/CD (Jenkins, GitHub Actions) Advanced
- Cloud (AWS & GCP) Intermediate+
- Git & GitFlow Expert
- Testing (Jest, PyTest, JUnit) Expert
Databases & Architecture
Databases & Architecture
- SQL (MySQL, PostgreSQL, Oracle) Expert
- NoSQL (MongoDB, DynamoDB) Advanced
- Clean Architecture & DDD Advanced
- OOP & Functional Programming Expert
- Algorithm Design Intermediate+
Tools & Methodologies
Tools & Methodologies
- Agile/Scrum Methodologies Expert
- Technical Leadership Intermediate+
- Data Visualization (D3js, ChartJS) Advanced
- Code Quality (SonarQube) Intermediate+
My Languages
Global communication without linguistic barriers
NATIVE 
FLUENT My Trajectory
A professional journey marked by technological innovation and strategic leadership
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Nov 2025 - Presente
Senior DevOps & Security Engineer
The Trip Boutique AI
Leading DevOps, security and operations transformation in a Swiss company specialized in AI-powered travel solutions. I oversee ISO 27001 and GDPR certification processes, security training programs, internal audits and the continuous improvement of infrastructure, pipelines and critical services.
- Leading the full process of obtaining ISO 27001 and GDPR certifications
- Design and execution of security training campaigns for the whole team
- Ensuring compliance with security policies and internal audits
- Optimization of pipelines, SonarQube, Trivy, Lynis, backups and operational automations
- Strengthening server, network, DNS, firewall, WireGuard VPN and TLS 1.2+ security
- Implementation of microservices for maintenance, anonymization and synthetic data generation for PII
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Oct 2024 - Ago 2025
CTO (Chief Technology Officer)
Findder
Developing advanced technological solutions and leading software development projects from a hybrid perspective in Badajoz, Extremadura. Focused on architecture, development and delivery of high-quality products.
- Development of scalable and robust architectures
- Implementation of development best practices
- Technical mentoring and development leadership
- Optimization of continuous delivery processes
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Jul 2023 - Sep 2024
Senior Software Engineer
MétrikaMedia
Management and preparation of software project architecture: backend, frontend, database, infrastructure, CI/CD. Led a team of 4 people organizing their daily work using agile methodologies.
- Quality increase in every product process
- Technical debt minimization in every process
- Reduction of operational and management costs
- Enhanced security in main product infrastructure
- Internship mentor for 2 Computer Engineering students UEx
- Training mentor for 6 students from SolarDrone and Sports Science Faculty UEx
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Jul 2022 - Jul 2023
Software Engineer
MétrikaMedia
Frontend development with React, Redux and Saga for music list management. Backend with Python/Flask and Java/SpringBoot. Optimized relational database design and process automation.
- Complete web application development (backend, frontend, infrastructure, CI/CD)
- Optimized MySQL database design
- Implementation of strategies with design patterns and clean architectures
- Secure authentication system preventing CSRF attacks
- Process automation in Google Drive with Google App Script
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Jun 2020 - Jun 2022
Researcher
Universidad de Extremadura
Automatic management and execution of continuous deployment (CD) and continuous integration (CI). Frontend architecture, design and programming with ReactJS, Redux and redux-saga for important client like PRISA.
- Proprietary data management system using browser cache
- Report generation time reduction from 1 week to minutes
- Proprietary request building system with cancellation using Axios
- Code quality improvement through continuous delivery systems integration
- Complex automatic reporting system for commercial phonogram measurement
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Jul 2019 - Jun 2020
Junior Programmer
HOMERIA by Glovo
Continuous development and improvement of web application in ReactJS with Redux for global state management and Jest as testing tool. Backend with Python/Flask, JWT and PyTest.
- Database query execution time reduction from >30s to 6s
- Complete web application migration to React from JQuery
- Security improvement by integrating CORS in API with JWT
- Browser response size reduction by encapsulating with gzip
- Application management using Docker and AWS (EC2, S3, Lambda)
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2015 - Sep 2015
Junior Programmer
Ibermática
Web application development for Telefónica client as part of code and architecture migration using AngularJS for Frontend and Jasmine as testing framework. Backend with JavaEE, SpringBoot and JPA.
- First team to complete client sprints
- First company of the 3 hired by Telefónica to finish the contracted part
- Leadership of a team of 4 junior developers
- First knowledge about team management in business environment
- Management of architecture and code migration in real application
My Education
Academic training and professional development in the field of computer engineering
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2020 - Jul 2021
Master's in Computer Engineering
Universidad de Extremadura
Advanced specialization in computer engineering with focus on software development, distributed architectures and applied research methodologies.
- Specialized training in advanced technologies
- Development of applied research projects
- Agile methodologies and distributed architectures
- Specialization in advanced frontend development
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2015 - 2019
Bachelor's in Software Engineering
Universidad de Extremadura
Comprehensive training in software engineering with active participation in university life and student representation. Experience in student leadership and collaborative projects.
- Class delegate for 1st, 2nd and 4th year
- Member of the Polytechnic School Student Council
- Student Council delegate during the 2018/19 academic year
- School Board member during 2016/2017 and 2018/2019 courses
- UEx representative in RITSI
- Student Tutor in the Cómplice project
Contact
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