Senior Systems Engineer

Senior Systems Engineer (L3)

Location: Connecticut, USA (Hybrid / On-site as required)
Type: Full-Time
Company: Netsurit | Global Managed Services Provider

If Microsoft is your playground and outages are boss fights — this role is for you.

About Netsurit

Netsurit is a global MSP helping organizations grow, scale, and stay secure through modern IT. Our mission is to Support the dreams of the doers, with a culture that genuinely supports personal and professional growth.

This is not a keep-the-lights-on role.

This is for senior engineers who thrive in MSP environments, own complex infrastructure, and lead when things get difficult.

The Role

As a Senior Microsoft Systems Engineer (L3), youll work across projects and advanced support, acting as a technical leader for customers and internal teams.

You will:

• Design, build, migrate, secure, and optimize Microsoft environments
• Lead infrastructure, DR, security, and modernization projects
• Handle advanced L2/L3 escalations
• Work directly with customers as a trusted technical advisor
• Act as Technical / Project Lead on MSP platform and standardization initiatives

Your Tech Stack

• Windows Server, Microsoft 365, Exchange
• Azure & hybrid infrastructure
• Disaster Recovery & BDR: Datto, Veeam, SaaS backups
• Cybersecurity best practices across client environments
• Core MSP platforms and tooling (full ownership expected)

Infrastructure, Cloud & Project Delivery

Youll plan, implement, and manage:

• Server deployments and migrations
• Microsoft 365 & Exchange migrations
• Azure and hybrid infrastructure
• DR & BDR solutions (Datto, Veeam, SaaS)
• Cybersecurity standards across all client environments

Support & Operations

Provide L2/L3 escalation support for:

• Servers, Microsoft 365, networks, endpoints, and security platforms

Day-to-day includes:

• Troubleshooting via phone, email, and ticketing systems
• SLA and ITIL-aligned ticket management
• Proactive queue monitoring and escalation
• Maintaining accurate technical documentation
• Participation in a rotating after-hours support schedule

Networking & Systems Expertise

Troubleshoot and support:

• LAN/WAN connectivity, switches, routers, firewalls
• Endpoints and peripherals
• DNS, SPF, DKIM, DMARC
• Email systems and deliverability

Plan and implement:

• Patch management strategies
• Application deployments, service packs, and updates

What You Bring

Experience

• 3+ years in progressive systems engineering / technical support (5+ preferred)
• Recent (last 12–24 months) hands-on experience with:
• Server & Microsoft 365 / Exchange migrations
• DR & backup solutions (Datto, Veeam)
• Email security and spam filtering platforms
• Firewalls and security tools

Technical Skills

• Windows Server, Microsoft 365, Azure
• PC/laptop deployment, troubleshooting, malware remediation
• Strong networking fundamentals: TCP/IP, DNS, routing, switching

Ways of Working

• Proven infrastructure design and implementation experience (Visio a plus)
• Experience across regulated industries (finance, medical, legal, non-profit, real estate)
• Vendor management and negotiation experience
• Strong analytical, troubleshooting, and documentation skills
• Clear, confident customer-facing communication
• Highly organized, self-driven, and comfortable in fast-paced MSP environments

Preferred / Bonus

• A+, Server+, Security+, Microsoft certifications (or equivalent)
• Cybersecurity certifications (highly advantageous)
• Associates or Bachelors degree in IT or related field
• Deep expertise in Microsoft, Azure, networking, and security infrastructure

Artificial Intelligence Innovation:
Join Netsurit at the forefront of AI transformation—where technology meets ambition. Help us design, implement, and scale intelligent solutions that empower our clients to automate processes, uncover insights, and accelerate growth. Leverage tools like Microsoft Copilot, Azure AI, and custom machine learning models to turn data into meaningful business outcomes. Be part of a team thats shaping the future of AI-powered innovation.

Please share your experience and knowledge in AI as part of your application wed love to see how you can help us drive whats next.

Note to Agencies
Principals only. No recruiters, no agencies, no unsolicited services.