Security Engineer

Namespace Labs; San Francisco (CA); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Competitive salary and stock options

Flexible working hours

Market-leading parental leave

Job summary

Namespace Labs seeks a Security Engineer to own and strengthen security across our systems, networks, and infrastructure. You will identify vulnerabilities, implement security measures, and embed security into how we build and operate.

Join a fast-moving team that values grit, ownership, and practical security solutions in a cloud-native environment. You will work with engineering, operations, and sales to enforce security across the stack.

Qualifications

• Strong security engineering fundamentals across production infrastructure, systems and networks.
• Experience with network security, firewalls, IDS/IPS, vulnerability management, threat detection and response.
• Ability to translate security risks into pragmatic technical solutions.
• Solid understanding of security best practices across modern cloud and infrastructure environments.
• Ability to collaborate with engineering and operations to embed security into workflows.
• Bias toward execution and ownership in a fast-moving environment.

Responsibilities

• Design and build firewalls
• Develop IDS/IPS to fortify servers and networks
• Conduct security audits and vulnerability assessments
• Develop security measures for real-time threat detection and response
• Create security-first guidelines for the organization
• Collaborate with operations, developers, and stakeholders on security initiatives
• Support sales with security questionnaires and requirements

Skills

Security fundamentals

Network security

Firewalls

IDS/IPS

Threat detection

Cloud security

DevSecOps

Security best practices

Tools

None

Job description

Join our mission

We're proud to work with many incredible companies, accelerating their ability to build their products.

We've spent years watching talented engineering teams lose momentum to the same frustrating bottleneck: waiting. Waiting for CI to finish. Waiting for builds to complete. Waiting for tests to run.

After experiencing this pain firsthand at companies of every size, we set out to build the developer infrastructure platform we'd always wanted to use. Something that would seamlessly integrate with our workflows and the tools teams already love—but make everything dramatically faster and more cost-effective.

Today, we're already accelerating hundreds of companies around the world, helping them ship features instead of waiting for infrastructure. We've built something that feels almost magical in its simplicity: change your runs-on line, mount your toolchain cache directory and suddenly your builds are 5x faster.

About the role

As a Security Engineer at Namespace, you'll own and strengthen security across our systems, network, and infrastructure. You'll work closely with engineering and operations to identify vulnerabilities, build security measures and best practices, and ensure security is embedded into how we build and operate.

Our culture

We're looking for people with grit—people who push through ambiguity, take ownership, and keep going when things get hard. You're deeply curious, driven to understand how things work and how they can be improved. Most importantly, you have a strong bias to execution: you don't wait for perfect conditions, you ship, learn, and iterate quickly. If you care about building, moving fast, and making real impact, you'll fit right in.

What you'll do

• Design and build novel firewalls, intrusion detection systems (IDS), and intrusion prevention systems (IPS) to fortify our servers, networks, and systems

• Conduct regular security audits and vulnerability assessments, evaluating technologies and core systems for weaknesses and potential vulnerabilities

• Develop security measures to quickly detect and respond to real-time threats and vulnerabilities

• Develop security-first guidelines and best practices for the entire organization to follow

• Work closely with operations, developers, and other stakeholders to build and maintain a one-team approach to security

• Support the sales team with security questionnaires and technical security requirements from customers

What we're looking for

• Strong security engineering fundamentals, with hands‑on experience securing production infrastructure, systems, and networks

• Experience with network security, firewalls, intrusion detection and prevention, vulnerability management, and threat detection and response

• Ability to identify security risks and translate them into pragmatic technical solutions

• Strong understanding of security best practices across modern cloud and infrastructure environments

• Ability to work closely with engineering and operations teams and embed security into existing systems and workflows

• Bias toward execution and ownership, with the ability to operate effectively in a fast-moving environment

You can expect:

• Competitive salary and stock options

• Flexible working hours

• Market‑leading parental leave

Life at Namespace Labs:

• We pride ourselves in being a small team of experts that can achieve a lot.

• We balance our long‑term vision with short‑term pragmatism.

• We believe in being fully transparent internally on how decisions are made, on how the company is doing, and we use that information to drive our decisions.