Site Reliability Engineer

Site Reliability Engineer
Lisboa
Lisboa, Lisboa, Portugal

Job Title: Site Reliability Engineer (SRE)

Location: Lisbon, Portugal

Work model: Full-time, Hybrid (3x office per week)

About Mozaydo

Mozaydo was built by people who believe work should feel human - even when powered by technology.

We’re a
- first company that connects talent, technology, and purpose to help companies grow sustainably.

Here, ownership matters more than control, and progress matters more than perfection.

People powered. Technology enabled.

About the Role

We’re expanding our Technology Services Team capacity to support our customers.

This role involves managing application and system architectures, optimizing environments, troubleshooting incidents, and driving a strong SRE culture focused on resilience, ownership, and continuous improvement. You will work closely with
- functional teams to support, optimize, and secure
- scale systems and applications.

Responsibilities

• Ensure reliability, availability, and performance of
  - tier platforms across Web Tier and App Tier environments (IIS, Tomcat, Apache, etc. );
• Install, configure, and maintain application components and support application deployments in production and staging environments;
• Troubleshoot complex system, application, and architectural issues, performing
  - cause analysis and driving blameless postmortems;
• Work with SQL databases to extract and analyse data, supporting performance and operational insights;
• Support and optimize systems within the Hadoop ecosystem, ensuring stable and reliable
  - data operations;
• Implement and maintain security best practices across application and system layers;
• Collaborate with engineering teams to introduce SRE practices, automate processes, and improve operational resilience.

Requirements

• Strong knowledge of system architectures (multi-tier architecture, SOA, messaging, transactions, DB replication);
• Experience installing and configuring Web Tier and App Tier components such as IIS, Tomcat, Apache, or similar;
• Solid understanding of SQL and experience extracting information from relational databases;
• Knowledge of the Hadoop ecosystem and related
  - data components;
• Strong focus on system and application security, performance optimization, and hardening;
• Excellent troubleshooting skills and ability to lead postmortem analysis with a blameless culture;
• Understanding of key SRE principles such as ownership, reliability engineering, and continuous improvement mindset;
• Good command of the English language (spoken and written).

What We Offer

• Flexible work.
• Culture of autonomy and trust.
• Challenging and human projects.
• Opportunities for growth and continuous learning.

Hiring Process

Our hiring process is designed to ensure the best match between talent and opportunity. Steps may vary slightly depending on the specific role.

• Introductory Meeting with Mozaydo - to get to know you, your experience, and career goals.
• Client Interview - a conversation with the client to explore alignment with the role and team.
• Technical Assessment - evaluation of specific skills and expertise, when relevant.
• Final Interview (Cultural Fit) - focused on values, mindset, and collaboration style.