What are the responsibilities and job description for the Senior Windows System Engineer position at ResolveTech Solutions Inc.?
We are seeking a highly experienced Senior Windows Infrastructure & Performance Engineer to lead performance tuning, optimization, and reliability initiatives across enterprise Windows environments. This role requires deep expertise in Windows internals, Active Directory, and system-level troubleshooting, along with experience supporting hybrid cloud infrastructure.
You will play a critical role in ensuring system scalability, performance, and availability while serving as a senior escalation point for complex production issues.
Key Responsibilities:
- Lead performance tuning across Windows Server environments (CPU, memory, disk I/O, network)
- Diagnose and resolve complex performance bottlenecks using advanced troubleshooting techniques
- Design and support highly available and scalable Windows infrastructure solutions
- Manage and optimize Active Directory Domain Services (AD DS), including domain controllers, replication, and authentication flows
- Act as a senior escalation point for production incidents and drive rapid resolution
- Perform root cause analysis (RCA) and implement preventive measures
- Optimize Active Directory, DNS, DHCP, and Group Policy for performance and scalability
- Collaborate with cross-functional teams (application, database, cloud) for end-to-end optimization
- Support hybrid cloud environments (Azure/AWS), including migration and performance tuning
- Automate tasks using PowerShell and scripting tools
- Maintain monitoring, alerting, and capacity planning strategies
- Create and maintain technical documentation and operational runbooks
Technical Skills:
- Deep understanding of Windows internals (processes, threads, memory management)
- Hands-on experience with performance tools (PerfMon, Resource Monitor, Sysinternals)
- Advanced knowledge of Active Directory:
- Domain controllers, replication, FSMO roles
- Kerberos and LDAP authentication
- Experience with:
- AD replication troubleshooting and latency resolution
- AD site topology design and optimization
- Authentication performance tuning
- AD backup, recovery, and disaster recovery
- Strong knowledge of DNS, DHCP, and Group Policy
- Experience with virtualization (VMware, Hyper-V)
- Proficiency in PowerShell scripting and automation
- Solid networking fundamentals (TCP/IP, latency, throughput, load balancing)
- Experience with monitoring tools (Dynatrace, SolarWinds, SCOM)
- Proven ability to troubleshoot across compute, storage, and network layers