Software Engineer II, Elastic File System (EFS)

Amazon EFS provides fully managed, elastic file storage that scales from gigabytes to petabytes without provisioning or management overhead. Customers rely on it for everything from simple web serving to large-scale analytics and ML training pipelines.

We're looking for engineers who want to work on distributed storage systems that serve real workloads at significant scale. You'll tackle challenges in replication, consistency, and fault tolerance. You'll operate what you build.

Key job responsibilities
What you'll work on:
- Distributed systems design: consensus protocols, replication strategies, failure handling
- Systems-level programming for storage engines and critical data paths
- Operating services at scale: performance tuning, debugging production issues, capacity planning
- Building tooling and automation that makes a small team effective at running large infrastructure

A day in the life
Tech environment: Java, C/C++, Rust, Go, and internal AWS systems. You'll work across the stack, from low-level optimization to service architecture. We're investing in AI-assisted development for systems engineering and you'll help define how we use it, from code generation to operational automation.

This role includes on-call responsibilities. We take operational excellence seriously: automated remediation, thorough runbooks, and a culture of fixing root causes rather than firefighting the same issues repeatedly.

EFS is built entirely in Boston. We're working on new capabilities that expand how customers use file storage with AWS. The team operates with a customer focus, working backward from real problems to build storage infrastructure that customers depend on for their most critical workloads.

About the team
AWS values diverse experiences. Even if you do not meet all of the preferred qualifications and skills listed in the job description, we encourage candidates to apply. If your career is just starting, hasn’t followed a traditional path, or includes alternative experiences, don’t let it stop you from applying.

Why AWS? Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never stopped innovating — that’s why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses.

Inclusive Team Culture Here at AWS, it’s in our nature to learn and be curious. Our employee-led affinity groups foster a culture of inclusion that empower us to be proud of our differences. Ongoing events and learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon conferences, inspire us to never stop embracing our uniqueness.

Mentorship & Career Growth We’re continuously raising our performance bar as we strive to become Earth’s Best Employer. That’s why you’ll find endless knowledge-sharing, mentorship and other career-advancing resources here to help you develop into a better-rounded professional.

Work/Life Balance We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why we strive for flexibility as part of our working culture. When we feel supported in the workplace and at home, there’s nothing we can’t achieve in the cloud.

BASIC QUALIFICATIONS

- 3+ years of non-internship professional software development experience
- 2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience
- 1+ years of software development engineer or related occupational experience
- 1+ 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
- 1+ years of Object Oriented Design experience
- Bachelor's degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field
- Experience programming with at least one software programming language

PREFERRED QUALIFICATIONS

- 3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
- Bachelor's degree in computer science or equivalent
- Experience with server, storage, networking, or large-scale distributed systems
- Experience with distributed systems at scale
- Familiarity with consensus protocols (Paxos, Raft) or distributed consistency models

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

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

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 .

USA, MA, Boston - 143,700.00 - 194,400.00 USD annually