Application Support Engineer – IT Security

Nimber; Lisboa; On-site; EUR 40,000 - 60,000; Full time

Job summary

Nimber is seeking an Application Support Engineer to join our IT Security Application Support team in the banking sector. You will ensure stability, performance and availability of critical security apps, collaborating with development, infrastructure and security teams.

The role blends application support, incident management, infrastructure operations and automation, with a focus on continuous improvement across Windows and Linux environments, SLAs and security standards.

Qualifications

• Experience in Application Support, Production Support or IT Operations.
• Strong knowledge of Windows Server and Linux administration and troubleshooting.
• Experience in incident, problem and change management.
• Understanding of application monitoring, performance management and infrastructure operations.

Responsibilities

• Manage, investigate and resolve production incidents across Windows and Linux server environments.
• Monitor application performance, availability and infrastructure capacity, ensuring compliance with established SLAs.
• Coordinate application releases, upgrades and lifecycle management activities.
• Participate in change management processes, collaborating with development, system administration, database and networking teams.
• Identify recurring incidents and implement preventive measures to improve system reliability.
• Automate operational procedures and contribute to continuous process improvement.
• Maintain technical documentation, including application architectures, operational procedures and monitoring requirements.
• Collaborate with development teams to ensure new applications comply with infrastructure and security standards.
• Support the operation and maintenance of critical cybersecurity platforms.

Skills

Application Support

IT Operations

Incident management

Automation

Windows Server

Linux

Tools

Splunk

TheHive

n8n

Trellix HX

PRIS Environment

Job description

At Nimber, we are looking for an Application Support Engineer to join an IT Security Application Support team within the banking sector.

You will be responsible for ensuring the stability, performance and availability of critical security applications, working closely with development, infrastructure and security teams.

This role combines application support, incident management, infrastructure operations and automation, with a strong focus on continuous improvement.

Key Responsibilities

• Manage, investigate and resolve production incidents across Windows and Linux server environments.
• Monitor application performance, availability and infrastructure capacity, ensuring compliance with established SLAs.
• Coordinate application releases, upgrades and lifecycle management activities.
• Participate in change management processes, collaborating with development, system administration, database and networking teams.
• Identify recurring incidents and implement preventive measures to improve system reliability.
• Automate operational procedures and contribute to continuous process improvement.
• Maintain technical documentation, including application architectures, operational procedures and monitoring requirements.
• Collaborate with development teams to ensure new applications comply with infrastructure and security standards.
• Support the operation and maintenance of critical cybersecurity platforms.

Technical Environment

You will work with a range of security technologies and platforms, including:

• Splunk: Security Information and Event Management (SIEM), used for security log monitoring and analysis.
• TheHive: Security incident management and response platform.
• n8n: Security workflow orchestration and automation.
• Trellix HX: Endpoint Detection and Response (EDR) solution.
• PRIS Environment: Secure, isolated infrastructure supporting cybersecurity investigations and digital forensic activities.

Key Requirements

• Experience in Application Support, Production Support or IT Operations, preferably within complex enterprise environments.
• Strong knowledge of Windows Server and Linux administration and troubleshooting.
• Experience in incident, problem and change management.
• Understanding of application monitoring, performance management and infrastructure operations.
• Familiarity with application deployments, releases and lifecycle management.
• Experience with scripting, automation and operational process improvement.
• Ability to troubleshoot technical issues and collaborate with multidisciplinary teams.
• Strong analytical skills, autonomy and a proactive approach to problem-solving.
• Good communication skills and ability to work in an international environment.

Security Projects & Initiatives

The team is also involved in several cybersecurity initiatives, offering exposure to:

• Security Log Management: Collection, centralisation and analysis of security logs.
• AI-Driven Security: Development of security use cases leveraging Machine Learning and Deep Learning.
• Cloud Security Monitoring: Security log collection and analysis across AWS, Google Cloud Platform and Microsoft Azure.
• Security Automation: Development of automated workflows to improve security operations and incident response.

Why Join Us?

At Nimber, you'll have the opportunity to work in a challenging international banking environment, supporting business-critical security applications and contributing to innovative cybersecurity projects.

Ready for your next challenge? Join Nimber and help us build more secure, reliable and efficient IT environments.