Senior Application Platform Engineer

Position Summary: The Senior Application Platform Engineer acts as a critical link between application development teams and the underlying infrastructure. This role is responsible for ensuring that the on-premises OT environment is secure, optimized, and fully prepared to host Mendix-based applications. The ideal candidate brings a developer mindset, understanding how software interacts with servers, providing architectural guidance, and managing both infrastructure and security requirements. Key Responsibilities: • Platform & Infrastructure Management: Lead the setup, provisioning, and optimization of Windows Server environments and IIS to support business-critical applications. • Architectural Collaboration: Work closely with Lead Mendix Developers to provide insights on application performance, resource usage, and infrastructure interactions. • Security & Compliance: Manage server-to-server encryption (SSL/TLS), certificate lifecycle, and system hardening to meet strict OT cybersecurity standards. • Performance Tuning: Monitor application-database interactions (SQL Server), identify bottlenecks, and implement optimization strategies. • Technical Leadership: Mentor and guide junior system engineers, ensuring consistent, high-quality infrastructure practices. • Integration Support: Configure and manage system integrations, including service accounts, privileged access (AD/LDAP), and connectivity. • Continuous Improvement: Deepen knowledge of the Mendix platform to streamline development workflows and deployment processes. Qualifications & Skills: • Senior-Level Experience: Proven track record in senior technical roles (e.g., Senior System Engineer, Senior DevOps, or Senior Application Engineer). • Infrastructure Expertise: Strong experience with Windows Server administration and Microsoft IIS configuration. • Security Knowledge: Hands-on experience implementing on-premises security protocols, encryption (at rest and in transit), and certificate management. • Database Skills: Solid understanding of SQL Server, including connectivity, performance tuning, and basic administration. • Scripting & Automation: Proficiency in PowerShell (or similar) for automating provisioning, configuration, and monitoring tasks. • Developer Mindset: Ability to understand application logic and software architecture; experience with Mendix or other low-code/rapid-application platforms is a plus. • Networking Fundamentals: Familiarity with routing, firewalls, and load balancing within a local/OT environment. • Leadership & Autonomy: Able to work independently, make architectural decisions, and mentor junior engineers.