Sr. System Engineer

Nexus Technologies LLC; United States; Remote; USD 117,000 - 143,000; Full time

Benefits offered by this job

PTO 4 weeks annually

Company‑paid life insurance

Disability insurance (short/long term)

Voluntary benefits such as criticalIll

401k discretionary match

Job summary

NexusTek is seeking a Sr. Systems Engineer to join the Engineering Center, focusing on private cloud services for mid‑market and enterprise clients. The role emphasizes AWS expertise, on‑premise infrastructure, and platform automation within a remote US team.

You will own hard problems, provide final escalation resolution, and contribute to standards across hybrid Cloud environments while supporting cloud migrations and lifecycle upgrades.

Qualifications

• AWS experience with hybrid cloud and on‑prem infrastructure.
• Experience with IAM, AD/Entra ID, SSO, MFA and vulnerability remediation.
• Ability to resolve escalated customer issues and lead incident response.
• Proficient in automation, scripting, and runbooks documentation.
• Willingness to participate in after‑hours on‑call rotations.

Responsibilities

• Support scalable, secure infrastructure across AWS and on‑prem/hybrid environments.
• Manage cloud security including IAM, AD/Entra ID, SSO, MFA and compliance readiness.
• Resolve escalated customer issues and monitor SLAs.
• Maintain disaster recovery, backup validation, and operational readiness.
• Lead infra projects: migrations, modernization, onboarding, lifecycle upgrades.
• Partner with stakeholders for reviews, remediation strategies and SOWs.
• Develop runbooks, docs, and training; mentor engineers.
• Drive continuous improvement and proactive risk communication.
• Participate in rotational after‑hours on‑call coverage.

Skills

AWS infrastructure

Security & compliance

Incident management

Remote collaboration

Windows Server Administration

Scripting & automation

Education

AWS Certified Solutions Architect – Associate/Professional

AWS Certified SysOps Administrator – Associate

Tools

CloudWatch

Lambda

RDS/AWS Backup

Veeam/Commvault

Terraform

Ansible

SIEM

LogicMonitor

N-Able

Job description

Private Cloud Services Full Time Professional USA - Remote, USA, Remote, US

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
• S3 & EBS Storage
• Ansible / Configuration Management
• Security & Compliance Frameworks (CMMC 2.0, SOC 2, HIPAA) - a plus
• Infrastructure as Code (Terraform) - a plus

Certifications

• AWS Certified Solutions Architect – Associate or Professional
• AWS Certified SysOps Administrator – Associate

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
• 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
• 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