Sphinx Defense

Develops software for national security solutions

Senior Network Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours

Full-timeColorado Springs, CO, USA

About the Job

Requirements

Have 10 or more years of experience supporting enterprise or mission-critical network infrastructure.
Have hands-on experience with network troubleshooting, routing and switching, firewalls, and secure network architectures.
Have experience configuring and supporting Cisco, Juniper, and/or Palo Alto network technologies.
Have experience implementing and troubleshooting virtual private networks, Internet Protocol Security tunnels, and network segmentation.
Have hands-on network security experience, including identifying and mitigating routing-based threats such as Border Gateway Protocol hijacking and route leaks.
Have experience working in classified or highly secure environments.
Have experience with Cisco networking technologies and enterprise networking protocols.
Have experience analyzing network traffic and troubleshooting complex connectivity issues.
Have hands-on experience supporting Amazon Web Services cloud and hybrid infrastructure environments, including networking and connectivity between cloud and on-premises systems.
Be able to clearly communicate technical issues, risks, and recommendations to technical and non-technical stakeholders.
Be highly collaborative and self-motivated, and be comfortable operating in fast-paced environments with evolving priorities.
Hold an active TS/SCI clearance or be eligible to obtain one.
Must be a U.S. citizen.
Must be able to obtain and hold a U.S. TS/SCI security clearance.

Responsibilities

Design, configure, maintain, and troubleshoot secure network infrastructure.
Support routers, switches, firewalls, gateways, and other enterprise networking technologies, including Cisco, Juniper, and Palo Alto network devices.
Investigate and resolve network performance, reliability, and connectivity issues across local and wide area network environments.
Support secure classified network environments and maintain compliance with government security requirements.
Perform network monitoring, packet analysis, and root cause troubleshooting using industry-standard tools.
Collaborate with cloud, infrastructure, and cybersecurity teams to support modernization and scalability efforts.
Assist with implementing and maintaining network security controls and segmentation strategies, virtual private networks, and Internet Protocol Security tunnels.
Support documentation, technical analysis, and operational reporting for internal and customer stakeholders.
Contribute to infrastructure improvements that increase reliability, automation, and operational efficiency.
Support Domain Name System, Dynamic Host Configuration Protocol, Internet Protocol management, and other core network services in enterprise environments.

Desired Qualifications

Experience designing or supporting complex Amazon Web Services and/or multi-cloud networking environments.
Have experience with network automation tools and protocols such as Ansible, Representational State Transfer Configuration, and Network Configuration Protocol.
Have experience supporting space, defense, or government mission environments.
Hold an active Department of Defense 8570 Information Assurance Technical Level II certification or higher, such as Security+.

ABOUT SPHINX

Sphinx builds software to solve complex national security problems in Space. Founded by engineers and technologists with deep experience across commercial and defense technology, we were frustrated by the outdated and insecure technology America's service members are forced to rely on. We're here to do better.

We’re focused on building modern, scalable products with an emphasis on using open source technologies. Expect talented, motivated, and interesting colleagues who emphasize collaboration, transparency, and individual responsibility.

ABOUT THE ROLE

Sphinx is hiring a Senior Network Engineer to help design, build, secure, and maintain resilient network infrastructure supporting next-generation national security space systems. This role will support mission-critical systems across classified and unclassified networks, and will require closely collaborating with software, infrastructure, products teams to ensure reliable and secure connectivity for operational systems.

We’re looking for someone who enjoys owning complex infrastructure challenges and can bring a strong mix of hands-on networking expertise and systems thinking to the team. You will ensure that the infrastructure underpinning critical national security space missions is performant and secure. This role is designed for someone with deep technical experience supporting enterprise or mission-focused environments, particularly within government, defense, or highly regulated spaces.

What you will be focusing on:

Designing, configuring, maintaining, and troubleshooting secure network infrastructure
Supporting routers, switches, firewalls, gateways, and other enterprise networking technologies, including Cisco, Juniper, and Palo Alto network devices
Investigating and resolving network performance, reliability, and connectivity issues across LAN/WAN environments
Supporting secure classified network environments and maintaining compliance with government security requirements
Performing network monitoring, packet analysis, and root cause troubleshooting using industry-standard tools
Collaborating with cloud, infrastructure, and cybersecurity teams to support modernization and scalability efforts
Assisting with implementation and maintenance of network security controls and segmentation strategies, VPNs, and IPSec tunnels
Supporting documentation, technical analysis, and operational reporting for internal and customer stakeholders
Contributing to infrastructure improvements that increase reliability, automation, and operational efficiency
Supporting DNS, DHCP, IP management, and other core network services in enterprise environments

You might be a good fit if you:

Have 10+ years of experience supporting enterprise or mission-critical network infrastructure
Have hands-on experience with network troubleshooting, routing and switching, firewalls, and secure network architectures
Have experience configuring and supporting Cisco, Juniper, and/or Palo Alto network technologies
Have experience implementing and troubleshooting VPNs, IPSec tunnels, and network segmentation
Have hands-on network security experience, including identifying and mitigating routing-based threats such as BGP hijacking and route leaks
Have experience working in classified or highly secure environments
Have experience with Cisco networking technologies and enterprise networking protocols
Have experience analyzing network traffic and troubleshooting complex connectivity issues
Have hands-on experience supporting AWS cloud and hybrid infrastructure environments, including networking and connectivity between cloud and on-premises systems
Can clearly communicate technical issues, risks, and recommendations to both technical and non-technical stakeholders
Are highly collaborative, self-motivated, and comfortable operating in fast-paced environments with evolving priorities
Hold an active TS/SCI clearance or are eligible to obtain one

Bonus points if you have:

Experience designing or supporting complex AWS and/or multi-cloud networking environments
Have experience with network automation tools and protocols such as Ansible, RESTCONF and NETCONF
Experience supporting space, defense, or government mission environments
Hold an active DOD 8570 IAT Level II certification or higher (i.e. Security+)

LOCATION

This is a hybrid role based in Colorado Springs, CO, with a combination of onsite and remote work.

COMPENSATION

This role is between $144,000 - $195,000 base salary.

BENEFITS

Compensation includes competitive salary, meaningful equity ownership, profit sharing, employer 401(k) contribution, and 100% employer covered medical, dental, and vision insurance for you and your dependents.

ELIGIBILITY

Must be a US Citizen.
Must be able to obtain and hold a U.S. TS/SCI security clearance.

EEO STATEMENT

At Sphinx Defense, we are devoted to building a team that represents a variety of backgrounds, perspectives, and skills. Sphinx Defense is committed to providing equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, and gender identity.

CLEARANCE ELIGIBILITY - This position requires eligibility to obtain and maintain a U.S. security clearance. For more information about U.S. Security Clearances: click here.

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.

About the Company

Sphinx Defense

Develops software for national security solutions

Sphinx Defense develops software systems that tackle complex national security challenges for the United States and its allies. Their products are built to help government and partner organizations analyze data, detect threats, and support decision-making in security matters. By focusing specifically on defense-related software for national security and working with American and allied partners, Sphinx Defense differentiates itself from broader tech vendors. The company's goal is to provide reliable software solutions that protect national security interests and enhance allied defense capabilities.

Company size: 11-50
Company stage: Not listed
Total funding: Not listed
Headquarters: Washington DC, District of Columbia
Founded: 2020

Recently Posted Jobs

Explore more opportunities at Sphinx Defense

See more jobs