Software Dev Engineer II, AWS Networking (MONA)

AWS runs one of the largest networks in the world and MONA (Management Out-of-Band Networks and Automation) alone owns the full lifecycle of over one million physical devices. We are in the critical path for every new data center powering the AI revolution.

Everything we run we build in-house: controllers software-defined networking (SDN) and planning software. For example we own a controller for agentic network auto-remediation and the planning software that plans every new data center down to capacity and ports. We are looking for a Software Development Engineer II to own the design and delivery of core components of these systems end-to-end from design through production and to keep growing your technical scope. You do not need a networking background up front; strong engineers learn our domain here on a team that invests in your growth and gives you real ownership at a scale almost nowhere else can offer.


Key job responsibilities
- Own the design implementation and operation of well-scoped components and features of our in-house network software controllers SDN planning software and out-of-band systems end-to-end.
- Turn ambiguous requirements into high-quality well-tested scalable code; contribute to design docs and design reviews.
- Operate your services in production and uphold high operational standards improving monitoring and alarming as you go.
- Drive correctness and safety for automation that acts on production networks: idempotency guardrails and observability that proves work actually happened.
- Collaborate with your team and partner teams to evolve the product and continuously improve code processes and quality.
- Mentor junior engineers and contribute to the team through thoughtful code reviews.
- Participate in the on-call rotation for the services you own.


A day in the life
You own a component end-to-end: you write the design build it ship it and operate it. One morning you are extending our controller for agentic network auto-remediation; the next you are improving how the planning software allocates ports and capacity for a new data center build. You will make a teammates change better in review tighten operational excellence on your service and help a junior engineer level up all on systems that run at a scale almost nowhere else can offer with real ownership and teammates sharp enough to make you better.


About the team
MONA (Management Out-of-Band Networks and Automation) is part of AWS Networking. We are a highly motivated team of software systems and network developers who thrive on solving challenging problems and building large-scale distributed systems. AWS runs one of the largest networks in the world and MONA alone owns the full lifecycle of over a million physical devices. Everything we run we build in-house: controllers software-defined networking planning software and out-of-band management systems.


- 3 years of non-internship professional software development experience
- 3 years of designing and developing large-scale multi-tiered multi-threaded embedded or distributed software applications tools systems and services using: C# C Java or Perl experience
- 3 years of Object Oriented Design experience
- 3 years of non-internship design or architecture (design patterns reliability and scaling) of new and existing systems experience
- Bachelors degree or foreign equivalent in Computer Science Engineering Mathematics or a related field
- 3 years of contributing to new and current systems architecture and design (architecture design patterns reliability and scaling) experience

- 3 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
- Masters degree in computer science or equivalent
- Experience with server storage networking or large-scale distributed systems
- Experience building production software applications or understanding software development distributed systems and systems architecture

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

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The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at WA Seattle - 143700.00 - 194400.00 USD annually