2,136,980open jobs
135,808companies
252,262added this week
Browse all
Salary
$200k – $300k per year
Location
Hybrid
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 7, 2026. First seen by Alion on Oct 15, 2026.

Overview
Company
Impact
Profile match
Blue Mantis is a managed services, cybersecurity and cloud provider for mid-market and enterprise IT teams, headquartered in Portsmouth, New Hampshire.
Backed by Abry Partners

We are seeking a Network Security Engineer to provide technical support in design and deployment of Network Transformation and Network Operations. In this role, you will assess and deploy the relevant technology solutions according to customers’ business, security policy and application requirements and work directly with the Senior Network Engineer.

Key Responsibilities

  • Participate in daily network, firewall, and operational support.
  • Ability to troubleshoot network issues and failures and follow best practices and troubleshooting methodology to quickly assess current situations, find solutions, and implement changes to correct and/or update network topologies to ensure stability and functionality.
  • Provide technical analysis of operational issues and remediations during troubleshooting efforts to ensure documentations and procedures are followed and updated during active events. This includes the ability to report to management.
  • Stay up to date on emerging technologies and products, including attaining certifications and participation in industry events as appropriate.
  • Work with various stake holders to lead problem solving, evolve system roadmap and take critical decisions.
  • Provide clear communication with regular updates/reports to the management team.

Additional/ Non-Essential Responsibilities

  • Minimum of 5 years’ experience in deployment and configuration and architectural design of networking technologies specific to routing, switching and general network security best practices, in which 3 years must be in customer-facing positions.
  • Experience working for or with local government, service providers, and/or enterprises customers.
  • Experience in large Data Center or Enterprise/campus designs, architecture, deployment and configuration with physical and virtual appliances. Familiarity with applications driving modern infrastructure design in private and public cloud.
  • Experience in networking technologies such as STP, Nexus vPC, IPSEC / SSLVPN, Routing: VRF, MPLS, OSPF, BGP and Multi-Homed environments.
  • Datacenter Network services including Security, Load Balancing, DNS, etc. at the virtual and physical level.
  • Experience with Cisco, Juniper, Fortinet, HP, Aruba and CATO products (Firewall, Routing / switching, SASE, wireless and security)
  • Wireless networking technologies including access-control platforms such as Cisco ISE or Aruba Clear Pass Policy Manager
  • IPS/IDS, as well as other NGFW (Next Gen Firewall) features and capabilities.
  • Ability to write incident and problem record documentation to support daily efforts.
  • Strong analytical thinking and decision-making skills & highly organized.
  • Strong ability to influence others and build consensus via excellent verbal and written communication skills.

Skills, Knowledge and Expertise

  • Minimum of CCNA or comparable level of knowledge.
  • Ability to work on call rotation as needed.
  • B.S./B.A./M.S. degree or equivalent technical training.
  • Fortinet NSE 6 and NSE 7
  • Knowledge of Azure and AWS
  • Experience with Aruba ClearPass, Aruba switches and wireless
  • Experience with Cisco Firepower Services and Palo Alto security services.
  • Understanding of encryption and SSL/TLS technologies and best practices.

Base Salary Range: $200,000 to $300,000

Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.

We consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

Reasonable accommodations will be made to enable employees with disabilities to perform the essential functions of the job. This job description is intended to describe the general nature of the work being performed by employees in this role. It is not intended to be a complete list of all responsibilities, duties, and skills required.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
2,136,980 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Security
Similar stack
Same company
In your city
$50k – $72k per year · Hybrid · Full-Time · Bachelor's Degree · Rome
AI/ML
DALL-E
Apply
. Security Analyst 1 month ago
In office · Full-Time · Cairo
DevOps
CI/CD
Cybersecurity
ISO 27001
OWASP Top 10
Threat Modeling
Apply
In office · Full-Time · Cairo
DevOps
IAM
Cybersecurity
OWASP Top 10
Apply
In office · Full-Time · Cairo
Cybersecurity
ISO 27001
Apply
$75k – $89k per year · In office · 8+ years exp · Bachelor's Degree · Calgary · Edmonton
Management
ITIL
Apply
$35k – $59k per year · Remote (United States) · Nationals only · Contractor · Reston
Python
JavaScript
TypeScript
AI/ML
Copilot
ChatGPT
Claude Code
Model Context Protocol
LLM
OpenAI
Anthropic
DevOps
GCP
Azure
Git
AWS
GitHub
Apply
$42k – $71k per year · Remote (United States) · Nationals only · Contractor · Bachelor's Degree · Reston
Python
JavaScript
TypeScript
AI/ML
Copilot
ChatGPT
Claude Code
Model Context Protocol
LLM
OpenAI
Anthropic
DevOps
GCP
Azure
Git
AWS
GitHub
Apply
≈ $88k – $177k per year (Estimated) · Equity · Hybrid · Full-Time · 3+ years exp · Houston · Atlanta
Python
DevOps
Splunk
Terraform
Ansible
GCP
Azure
AWS
Incident Management
VPN
Cybersecurity
SIEM
Management
ITIL
ITSM
Apply
≈ $52k – $90k per year (Estimated) · Hybrid · Contractor · Montreal
DevOps
Azure DevOps
Azure
Management
SharePoint
Apply
Scrum Master sénior 17 days ago
≈ $64k – $114k per year (Estimated) · In office · Montreal
DevOps
Azure DevOps
Azure
Management
Scrum
Apply
$34k – $38k per year · Remote (United States) · Full-Time
Management
Service Desk
Apply
$95k – $130k per year · Remote (likely India) · Full-Time · 4+ years exp · Bachelor's Degree
Management
ServiceNow
Apply
EUX II Engineer 5 days ago
$54k – $68k per year · Hybrid · Full-Time · 3+ years exp
DevOps
VMWare
Hyper-V
Windows
DNS
DHCP
Cybersecurity
FortiGate
Active Directory
Apply
$120k – $165k per year · In office · Full-Time · Bachelor's Degree
Python
PowerShell
Bash
DevOps
VMWare
Datadog
Azure
AWS
Docker
Kubernetes
Incident Management
Linux
Windows
Unix
DNS
Cybersecurity
SIEM
Management
ServiceNow
ITIL
Apply
$120k – $165k per year · In office · Full-Time · Bachelor's Degree
Python
PowerShell
Bash
DevOps
VMWare
Datadog
Azure
AWS
Docker
Kubernetes
Incident Management
Linux
Windows
Unix
DNS
Cybersecurity
SIEM
Management
ServiceNow
ITIL
Apply
See all jobs
This is one of many
2,136,980 more open roles from verified company boards, updated every day.