Senior Software Engineer: Network Automation & SDN at Scale

Amazon Web Services (AWS); Seattle (WA); On-site; USD 168,000 - 227,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

AWS MONA team seeks a Senior Software Development Engineer to lead and shape software strategy for fault-tolerant, scalable systems behind a million-device network. You will design in-house controllers, SDN, and planning software, ensuring robust testing and observability across fleet-scale deployments.

You will mentor engineers, drive architecture reviews, and participate in on-call incidents, delivering high-impact improvements for next-generation data centers and automated remediation

Qualifications

• 7+ years of non-internship professional software development experience.
• 7+ years of programming with at least one software programming language experience.
• 7+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience.
• Experience as a mentor, tech lead or leading an engineering team.

Responsibilities

• Partner with the engineering manager to shape the team's software strategy — architecture, roadmap, and long-term vision — for the in-house systems behind a 1M+ device network (everything we run, we build ourselves).
• Design and build the in-house systems that solve our business problems — controllers, software-defined networking (SDN), and planning software — end-to-end, architected to scale with robust tests and metrics.
• Own and evolve our controller for agentic network auto-remediation that detects and resolves network issues automatically.
• Build the planning software that plans every new data center — capacity, racks, and ports — and deploys new network fabric.
• Own out-of-band management-plane services: serial console access to every server and router, plus managed connectivity such as SSH.
• Drive correctness and safety for automation acting on production networks: idempotency, guardrails, and observability that proves work actually happened.
• Lead design reviews, raise the operational-excellence and code-quality bar, and mentor engineers.
• Participate in on-call and help lead high-severity incident response.

Skills

System design

Leadership

Mentorship

Education

Master's degree in computer science or equivalent

Job description

AWS MONA team seeks a Senior Software Development Engineer to lead and shape software strategy for fault-tolerant, scalable systems behind a million-device network. You will design in-house controllers, SDN, and planning software, ensuring robust testing and observability across fleet-scale deployments.

You will mentor engineers, drive architecture reviews, and participate in on-call incidents, delivering high-impact improvements for next-generation data centers and automated remediation