Sr. System Engineer

Managed Service Provider (MSP) experience is highly valued and strongly preferred.

Working hours: 8am – 5pm Eastern time. Fully remote within the United States. After hours as needed to adjust to client needs.

Travel: Limited travel is required; engineering, incident, and client-facing work is largely performed remotely.

On-Call: Rotational on-call schedule shared across the team; this is a required responsibility of the role, and rotation frequency may vary based on team and business needs.

Why this job is exciting

The Sr. Systems Engineer is a hands-on role within the NexusTek Engineering Center, the company’s dedicated L3 Center of Excellence for the hybrid cloud stack. This role carries a deep, hire-in specialization in AWS experience, plus on-premises infrastructure, for mid-market and enterprise managed services clients. As a member of the Engineering Center, this engineer owns the hardest problems alongside other L3 peers for the accounts they support: final-tier escalation resolution, root cause ownership, and platform-grade automation and standards across hybrid cloud environments. This is a fully remote position with limited travel.

Core Responsibilities

• Support scalable, secure, and highly available infrastructure across AWS and on-premises/hybrid environments, including cloud-native services.

• Manage cloud and hybrid security, including IAM, Active Directory/Entra ID, SSO, MFA, vulnerability remediation, encryption, centralized logging, threat detection, and assist with compliance readiness (CMMC 2.0, SOC 2, HIPAA).

• Resolve escalated customer issues.

• Monitor platform health, SLAs, and service metrics; proactively identify risks, remediate issues, and maintain disaster recovery, backup validation, and operational readiness.

• Serve as a primary or secondary engineer on infrastructure projects, including cloud migrations, modernization, customer onboarding, offboarding, and lifecycle/EOL upgrades; contribute to technical assessments, scoping, solutioning, and SOW reviews.

• Partner with customer technical stakeholders through remote technical reviews, infrastructure health assessments, lifecycle planning, and long-term remediation strategies; identify and communicate new service opportunities.

• Develop and maintain runbooks, technical documentation, and knowledge-sharing resources; mentor engineers and contribute to certification roadmaps and internal technical training programs.

• Drive continuous improvement by taking ownership of engineering processes, tools, and documentation; communicate progress, blockers, and risks proactively while fostering accountability and team learning.

• Participate in rotational after-hours on-call coverage, responding to escalations beyond L1/L2 capabilities within SLA commitments and ensuring thorough incident documentation and handoffs.

Technical Skills & Tools

• Strong AWS infrastructure experience, including EC2, Auto Scaling, ALB/ELB, Multi-AZ architecture, VPC networking, Route 53, ACM, and cross-account IAM.
• Experience with AWS monitoring and troubleshooting (CloudWatch, Lambda, EventBridge), database backups and recovery (RDS, AWS Backup), and cloud cost management.
• Windows Server Administration
• Scripting & Automation (Python, Bash, PowerShell)
• Backup & Disaster Recovery (Veeam/Commvault, replication, failover testing)
• Monitoring & Observability (CloudWatch, LogicMonitor, N-Able, SIEM)
• EC2, Auto Scaling & Compute Services
• VPC & Hybrid/Cloud Networking
• S3 & EBS Storage
• Organizations / Multi-Account Architecture
• Ansible / Configuration Management
• Experience using ConnectWise ticketing system – a plus
• Security & Compliance Frameworks (CMMC 2.0, SOC 2, HIPAA) – a plus
• Infrastructure as Code (Terraform) – a plus
• Kubernetes & Docker – a plus

Certifications

• AWS Certified Solutions Architect – Associate or Professional
• AWS Certified SysOps Administrator – Associate
• Microsoft Certified: Azure Administrator Associate (or equivalent)

Certification is a plus, not a requirement at hire. Engineers who do not already hold a current AWS certification are expected to obtain at least one recognized AWS certification within 12 months of hire, supported by NexusTek’s certification program.

Pay and Benefits

Estimated Starting Salary/Wage Range: $130,000 annually + (base increase dependent on experience) , less applicable withholdings and deductions, paid on a semi-monthly basis (The actual salary offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure [for existing employees] skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.  Note that the majority of individuals in the position will fall in the low to mid-level of this scale; the upper end of this pay scale is offered only in exceptional circumstances and/or for unusually qualified candidates.)   

In addition to legally-required benefits, NexusTek offers a benefit package to eligible full-time employees, which currently includes the following:

• Four weeks of annual accrued PTO
• Seven paid national holidays
• Medical, dental, vision options
• Company-paid life insurance, short and long-term disability
• Voluntary benefits such as critical illness and accident
• Voluntary Legal Shield and identity theft protection
• Discretionary annual 401k match plan
• Generous employee referral bonus plan
• Employee Assistance Program
• Access to over 90,000+ courses in ADP My Learning
• StandOut employee engagement tools
• Eligible to apply for a Pluralsight license
• Eligible to apply for NexusTek Technical Academy or Leadership Academy

We’re happy to provide our comprehensive benefits guide. Each benefit is subject to eligibility requirements as specified in plan documents, and the Company reserves the right to modify the benefits it offers from time to time.

Interview Process – Typical interview process for this role:

Application and Screening Stage – Thanks for showing interest!

• Our recruiters carefully consider each application. If you are selected to move forward, we will contact you for the 20 minute introductory screening to learn more about you and why you want to work for NexusTek.

Interview Stage – We’ll dive into your experience more in depth

• One-hour technical interview with hiring manager (virtual)
• 30-minute to one-hour follow up interview with team member to be determined (virtual)
• References – 3 professional references at least one direct supervisor
• You are welcome to request additional conversations with team members you didn’t get to meet during the process

NexusTek provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws

NexusTek participates in E-Verify for all US Employees

Please be aware of potential recruitment fraud and fake social media pages. NexusTek will never ask you to pay a fee as part of the interview process. Additionally, we will not ask for your personal banking information until you have signed an employment offer and completed virtual onboarding training and paperwork provided by our HR team.

All communications with NexusTek professionals will only be sent from an @nexustek.com or ADP email address and never originate from gmail.com, yahoo.com, or other commercial email services. If you are viewing this job post outside of our website and interested in exploring opportunities, please go directly to our Careers Page: https://www.nexustek.com/nexustek-careers/ or https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=567e686e-7575-49d9-b29f-985e7365f987&ccId=19000101_000001&type=MP&lang=en_US

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