Software Development Engineer; L5), Perimeter Protection; Anti-DDoS), NFW

Software Development Engineer (L5), Perimeter Protection (Anti‑DDoS), NFW

Amazon Data Services, Inc. AWS Infrastructure Services owns the design, planning, delivery, and operation of all AWS global infrastructure. We support all AWS data centers and all of the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they rely on. We collaborate with people across AWS to deliver the highest standards for safety and security while providing seemingly infinite capacity at the lowest possible cost for our customers.

You’ll join a diverse team of software, hardware, and network engineers, supply‑chain specialists, security experts, and operations managers to build new AWS services that protect web applications against evolving threats and attacks.

We build everything from low‑level packet inspection hardware/software to customer‑facing AWS services, enabling globally distributed systems capable of mitigating the world’s largest and most sophisticated attacks. This role is based in Seattle, Washington.

• Design, develop, and maintain scalable distributed systems that power AWS Network Firewall, ensuring high availability and performance at global scale.
• Implement deep packet inspection and traffic analysis features to detect and mitigate evolving network threats and attacks.
• Collaborate with cross‑functional teams to gather customer requirements and translate them into technical designs and working software.
• Own the full software development life cycle from design through deployment and operational support, including on‑call responsibilities.
• Contribute to system architecture decisions and drive technical direction for new feature development.
• Write clean, maintainable, and well‑tested code while participating in code reviews to maintain high engineering standards.
• Develop automation and tooling to improve operational efficiency, deployment velocity, and system reliability.
• Analyze and resolve complex production issues, performing root‑cause analysis and implementing preventive measures.
• Mentor junior engineers and contribute to a culture of technical excellence and continuous improvement.

As an SDE on the Network Firewall team, you will start your day reviewing operational metrics and customer feedback to prioritize work. You will spend time writing and reviewing code, collaborating with teammates on design discussions, and working directly with customers to understand their security challenges. You will participate in sprint planning, contribute to architecture reviews, and deploy code to production—often in the same day.

Your internal stakeholders include product managers, security researchers, and partner teams across AWS Perimeter Protection.

The Perimeter Protection team is responsible for building and operating AWS's suite of network security services—including AWS Shield, AWS WAF, AWS Firewall Manager, and Network Firewall. Our mission is to make it simple for customers to protect their applications and networks from threats at any scale. We operate with a startup mentality inside AWS: moving fast, shipping frequently, and empowering engineers to own their solutions end‑to‑end.

Our culture values curiosity, customer obsession, and technical depth, and we celebrate bold ideas that push the boundaries of what’s possible in cloud security.

• 3+ years of professional software development experience.
• 2+ years of design or architecture experience for new and existing systems.
• Experience programming with at least one software programming language.

• 3+ years of full software development life cycle experience, including coding standards, code reviews, source control, build processes, testing, and operations.
• Bachelor’s degree in computer science or an equivalent field.

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or any other legally protected status.

The base salary range for this position is  –  USD annually. The total compensation package includes sign‑on payments, restricted stock units (RSUs), and benefits such as health insurance, 401(k) matching, paid time off, and parental leave. Learn more about our benefits at (Use the "Apply for this Job" box below)..