Managing trillions of objects in storage, retrieving them in sub-x ms, building software that deploys to tens of thousands of hosts, achieving 99.999999999% (you didn’t read that wrong, that’s 11 nines!) durability. These are just a few of the numbers that give you a sense of the scale of the exciting problems you will find every day working in Simple Storage Service (S3). Amazon S3 powers businesses across e globe that make the lives of consumers better daily. Whether its electronic content delivered to your home, technology that betters your remote working experience, allows you to plan travel to exotic places or simply get stuff delivered to your home.

Key job responsibilities
Software Development Engineer – S3 Object API
Join the S3 Object API team and build services at massive scale, supporting billions of requests per minute across a globally distributed fleet serving millions of customers.
What You'll Do:

• Design, develop, and maintain highly available services powering Amazon S3
• Build tools and automation to streamline operations, improve CI/CD pipelines, and reduce operational load
• Drive best practices for code quality, fleet health, security, and reliability
• Mentor junior engineers, helping them grow their skills and effectiveness
• Participate in design reviews, operations meetings, and leadership discussions
• Write clear documentation to help teams get the most from our services and tools

What to Expect:

• Ship code frequently and see its real-world impact on a vast customer base
• Work alongside engineers who obsess over performance, availability, scalability, and durability
• Participate in an on-call rotation—we invest heavily in automation and testing to minimize disruptions
• Enjoy a team culture that values work/life balance while maintaining high standards

Our Philosophy:
At AWS, if you build it, you own it. We hold a high bar for test automation, design reviews, and operational excellence—because our customers demand nothing less.

A day in the life
Upon joining S3, every employee is paired with a peer buddy who will help you to quickly come up to speed in understanding the technology we’re building, the tools we use and the business problems we’re trying to solve. We hire exceptional people and we recognize the importance of coaching others. We have a formal mentor search application that lets you find a mentor that works best for you based on location, job family, and job level. On our internal “Broadcast” video streaming website, you’ll find countless presentations by some of the brightest minds in computing discussing solutions to many of the exciting problems we’re solving in AWS today with new live-streaming videos added every week.

About the team
About AWS
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.