IT Application Engineer

About the role

Vantor is seeking an experienced IT Application Support Engineer to design, implement, secure, and support enterprise application infrastructure across on-premises and cloud environments. This role focuses on application delivery, Layer 7 networking, cloud platforms, and systems engineering to ensure the availability, performance, scalability, and security of mission-critical business applications.

Responsibilities

• Design, deploy, and support highly available application delivery platforms and supporting infrastructure.
• Configure and manage Layer 7 technologies including load balancers, reverse proxies, SSL/TLS services, traffic management policies, and Web Application Firewalls (WAF).
• Support and administer technologies such as F5 BIG-IP LTM/ASM, AWS ALB/NLB, Azure Application Gateway, NGINX, HAProxy, Citrix ADC, or equivalent solutions.
• Troubleshoot application performance, connectivity, authentication, API, and availability issues.
• Develop and maintain high-availability, failover, and application resiliency solutions.
• Partner with development and cybersecurity teams to support application deployments and secure application architectures.
• Infrastructure & Cloud Operations>
• Administer Windows and Linux server environments across physical, virtual, hybrid, and cloud platforms.
• Support AWS, Azure, and other cloud environments, including networking, security, monitoring, and identity management services.
• Manage virtualization platforms and infrastructure services supporting enterprise applications.
• Implement Infrastructure as Code (IaC) and automation solutions using tools such as Terraform, Ansible, PowerShell, or Python.
• Maintain system health, performance, and capacity to ensure reliable service delivery.
• Security & Compliance>
• Implement and maintain security controls aligned with organizational and regulatory requirements.
• Support vulnerability remediation, system hardening, application security, and incident response efforts.
• Absist with audits, compliance initiatives, and continuous improvement of security posture.
• Maintain application and infrastructure observability through monitoring, logging, and alerting platforms.
• Collaboration & Support>
• Provide Tier 2 and Tier 3 support for application and infrastructure-related incidents.
• Participate in on-call rotations and critical incident response activities.
• Collaborate with engineering, operations, cybersecurity, and business stakeholders on strategic initiatives.
• Maintain technical documentation, architecture diagrams, and operational procedures.
• Contribute to process improvements, technology evaluations, and mentoring of junior team members.

Qualifications

• Bachelor's degree in Information Technology, Computer Science, Engineering, or equivalent experience.
• 5+ years of experience supporting enterprise applications, infrastructure engineering, systems administration, or application delivery platforms.
• Experience administering Layer 7 networking and application delivery technologies.
• Hands-on experience with load balancing and Web Application Firewall (WAF) solutions, including F5 BIG-IP LTM/ASM, AWS ALB/NLB, Azure Application Gateway, or equivalent platforms.
• Experience supporting Windows and Linux operating systems.
• Experience with AWS, Azure, or other cloud platforms.
• Strong understanding of TCP/IP, DNS, HTTP/S, SSL/TLS, routing, firewalls, reverse proxies, and application networking concepts.
• Experience with virtualization, hybrid cloud architectures, and infrastructure automation.
• Proficiency with scripting or automation tools such as PowerShell, Python, Bash, Terraform, or Ansible.
• Strong analytical, troubleshooting, communication, and problem-solving skills.

Preferred Qualifications

• AWS Certified Solutions Architect or SysOps Administrator
• Microsoft Azure Administrator or Solutions Architect
• F5 Certified Administrator (F5-CA)
• Cisco CCNA/CCNP
• VMware VCP
• CompTIA Security+
• Experience with Docker, Kubernetes, OpenShift, or other container platforms
• Familiarity with CI/CD pipelines, DevOps practices, and modern application architectures
• Knowledge of Zero Trust principles and cybersecurity frameworks