Application Support Engineer

Nishtech; Brussel; On-site; EUR 55,000 - 85,000; Full time

Job summary

NISH Tech BV is seeking an experienced Application Support Engineer to deploy, operate and maintain in-house applications in a complex enterprise IT environment. You will work across Linux, Windows Server, IIS, SQL and infrastructure technologies to ensure reliable deployment and availability in Acceptance and Production environments.

Key responsibilities include 2nd-line support, deployment of new apps, log analysis, and DR/BCP validation, with a focus on collaboration across IT teams and

Qualifications

• 5+ years experience in Application Support or similar roles.
• Strong Linux Red Hat experience with deployment and log analysis.
• Windows Server 2012–2022, IIS and web app deployment knowledge.
• PowerShell proficiency; understanding of firewalls and load balancing.
• DevOps, CI/CD pipelines knowledge; troubleshooting and analytical skills.

Responsibilities

• Deploy and update in-house applications across Acceptance and Production.
• Support architecture, setup and deployment of new applications.
• Provide 2nd-line application support and complex troubleshooting.
• Deploy and support on Linux Red Hat and Windows Server environments.
• Analyze logs and incidents; configure F5 VIPs for web apps.
• Support RabbitMQ and Redis Cache; maintain DR/BCP plans.
• Monitor health and ensure reliable service operation.
• Collaborate with IT teams and vendors; maintain documentation.
• Contribute to continuous improvement of deployment processes.

Skills

5 years experience

Linux Red Hat

Windows Server

Microsoft IIS

PowerShell

Firewalls & load balancing

DevOps & CI/CD

Troubleshooting

Independent & collaborative

Customer-oriented

Learn new technologies

Fluent English

Fluent French or Dutch

Tools

F5 load balancing

RabbitMQ

Redis Cache

MongoDB

Neo4j

SQL Server

Job description

About the Role

NISH Tech BV is looking for an experiencedApplication Support Engineer to support the deployment, operation and maintenance of in-house applications within a complex enterprise IT environment. You will work acrossLinux, Windows Server, IIS, SQL and infrastructure technologies, ensuring applications are deployed reliably and remain available across Acceptance and Production environments.

Key Responsibilities

• Deploy and update in-house applications across Acceptance and Production environments, primarily usingWindows IIS and SQL.


• Support the architecture, setup and deployment of new applications.


• Provide2nd-line application supportand contribute to 2nd/3rd-level troubleshooting when required.


• Deploy and support applications onLinux Red Hat and Windows Server environments.


• Analyse application and system logs and troubleshoot technical incidents.


• ConfigureF5 load-balancing VIPsfor web applications.


• Support and maintain shared technologies such asRabbitMQ and Redis Cache.


• Contribute to and validateDisaster Recovery Plans and Business Continuity Plans.


• Monitor application and infrastructure health and ensure reliable service operation.


• Collaborate with IT clients, infrastructure teams, application teams and external vendors to resolve incidents and technical issues.


• Maintain accurate installation, operational and technical documentation.


• Support continuous improvement of application support and deployment processes.


• Contribute to the security, availability and operational stability of supported applications.

Required Skills

Mandatory Skills

• At least5 years of relevant experiencein Application Support, System Administration, Infrastructure Support or a similar role.


• Strong recent experience withLinux Red Hat, including application deployment, log analysis, system health monitoring and scripting.


• Strong experience withWindows Server 2012–2022.


• Good knowledge ofMicrosoft IISand web application deployment.


• Good knowledge ofPowerShell.


• Understanding offirewalls and network load balancing.


• Knowledge ofDevOps and CI/CD pipelines.


• Strong troubleshooting and analytical skills.


• Ability to work independently while collaborating effectively with technical teams.


• Customer-oriented, pragmatic and solution-focused approach.


• Willingness and ability to learn new technologies.

Nice-to-Have Skills

• Microsoft SQL Server.


• MongoDB.


• RabbitMQ.


• Neo4j.


• Redis Cache.


• F5 load balancing.


• Disaster Recovery and Business Continuity experience.


• Infrastructure and application security.


• Experience in critical infrastructure or highly available enterprise environments.

Languages & Practical Requirements

• Fluent English


• Fluent French or Dutch.


• Validdriving licence and access to a car.


• Mobile phonerequired for the duty/standby role.


• Willingness to participate in a24/7 duty rotation, approximately 1 week every 6 weeks.

About NISH Tech BV

NISH Tech BV connects technology professionals with opportunities across Europe. We support organizations with specialist expertise acrosscybersecurity, infrastructure, cloud, software engineering, data and digital transformation.