System Administrator - AWS & Windows (SRE / BI)

Leadtech Group; Barcelona; Híbrido; EUR 40.000 - 60.000; Jornada completa

Descripción de la vacante

A leading company seeking a System Administrator with extensive experience in AWS and Windows Server environments. You'll manage and optimize cloud infrastructure, automate processes, and contribute to the stability and performance of systems. Join a diverse team dedicated to delivering exceptional user experiences in a vibrant workplace.

Servicios

Flexible working hours

Competitive salary

Top-tier private health insurance

25 days vacation plus birthday off

Free coffee and snacks in office

Formación

• Minimum 4 years of experience in system administration.
• Strong specialization in Windows environments.
• Experience with AWS and key services.

Responsabilidades

• Manage and optimize AWS infrastructure following best practices.
• Administer and optimize Windows Server operating systems.
• Develop and maintain CI/CD pipelines with Jenkins.

Conocimientos

Windows Server Administration

Cloud Computing

Automation

Problem Solving

Scripting (PowerShell)

Educación

No specific degree mentioned but relevant experience required

Herramientas

AWS

Jenkins

Terraform

Docker

MySQL / MariaDB

Descripción del empleo

System Administrator - AWS & Windows (SRE / BI)

At Leadtech, we've been redefining digital businesses since 2009, creating innovative online solutions that reach millions of users every month. With a diverse team of over 700 members from 23+ nationalities, we're united by a passion for creativity and collaboration.

We specialize in delivering user-centric experiences across web and mobile platforms, where people can connect with our products like never before.

We're proud of our global reach and committed to fostering an inclusive workplace where every individual contributes to our shared vision of bringing cutting-edge projects to life. Learn more about our journey and mission on our About Us page!

As a Windows & Cloud (AWS) SRE, you'll play a key role in managing and optimizing our cloud infrastructure (mainly AWS), automating core processes, and ensuring the stability, security, and performance of our systems—with a strong focus on Windows Server environments. You'll work closely with fellow team members and other departments (such as Development and BI), making a significant impact on our products and internal processes. We're looking for someone proactive, with a strong technical foundation in the Microsoft ecosystem and a drive for continuous improvement.

Key Responsibilities :

• Design, implement, and manage AWS infrastructure following best practices for Infrastructure as Code (IaC), security, and high availability (HA)
• Administer and optimize Windows Server operating systems (including Active Directory, GPOs) at an advanced level
• Develop and maintain CI / CD pipelines using Jenkins to automate deployments and testing
• Create and maintain automation scripts (mainly in PowerShell; Bash is a plus)
• Support and manage key platforms and applications, including BI tools like Pentaho and automation platforms like N8N
• Monitor system performance, troubleshoot issues, and perform root cause analysis, mainly in Windows environments
• Collaborate with development teams to set standards, improve processes, and support DevOps practices
• Manage cloud infrastructure security (certificates, KMS, WAF, Security Groups, etc.)
• Linux administration experience (CentOS / Ubuntu) is a plus

Requirements

Required Qualifications :

• Minimum of 4 years of proven experience in system administration or similar roles (SysAdmin, SRE, DevOps), with strong specialization in Windows environments
• Advanced experience with Windows Server administration (Configuration, AD, GPOs, troubleshooting, hardening, clustering, etc.)
• Experience working with AWS and key services (EC2, S3, VPC, Route 53, Security Groups, Lambda, CloudFront, WAF, API Gateway, OpenSearch, etc.)
• Experience with Terraform for Infrastructure as Code
• Proficient in Jenkins for CI / CD pipelines
• Solid understanding of TCP / IP, VPCs, Subnetting, Route tables, DNS (Route 53)
• Experience administering MySQL / MariaDB databases
• Experience with Docker and AWS ECS
• Proven experience managing BI tools like Pentaho - Kettle and N8N
• Experience with SSL / TLS certificates, KMS, etc.
• Fluent in Spanish and English (international work environment)

Nice-to-Have Skills (Bonus Points!) :

• Linux administration experience (preferably CentOS, Ubuntu)
• Bash scripting knowledge
• Familiarity with orchestration / configuration tools (Ansible, Kubernetes / K8s)
• Knowledge of Python or other programming languages beyond scripting
• Experience with other BI tools (Qlik, Knime)
• Experience administering web servers (Nginx, IIS)
• Familiarity with monitoring tools (Grafana, InfluxDB, CloudWatch, System Center)
• Experience with other databases (PostgreSQL, DynamoDB, Redis, ElasticSearch, MS SQL Server)
• Experience with packaging tools (Maven, npm)
• Background in high-traffic web environments

Desired Personal Competencies :

• Ability to work independently and proactively, as well as collaboratively in a team
• Strong problem-solving skills, especially within the Microsoft ecosystem
• Excellent communication skills (both written and verbal)
• Ability to clearly document technical processes
• Continuous improvement mindset, with a focus on automation

WHY SHOULD YOU JOIN US?

Growth and career development

• At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities

Work-Life balance

• Benefit from a flexible schedule with flextime (7 - 9 : 30 a.m. start, 3 : 30 - 6 p.m. end) and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer!
• Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services)
• 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days!
• If you wish to come, in our office in Barcelona you'll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views
• Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary

Join us in an environment where you're free to innovate, learn, and grow alongside passionate professionals. At Leadtech, you'll tackle exciting challenges and be part of a vibrant team dedicated to delivering exceptional user experiences

Sounds good? Apply now! We're looking forward to getting to know you.

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