Software Development Engineer, AWS STS

Amazon

Amazon

Software Engineering

Seattle, WA, USA

Posted on Jun 4, 2026

Description

AWS Utility Computing (UC) provides product innovations — from foundational services such as Amazon’s Simple Storage Service (S3) and Amazon Elastic Compute Cloud (EC2), to consistently released new product innovations that continue to set AWS’s services and features apart in the industry. As a member of the UC organization, you’ll support the development and management of Compute, Database, Storage, Internet of Things (Iot), Platform, and Productivity Apps services in AWS.

The Security Token Service (STS) team at Amazon Web Services (AWS) is looking for a Software Development Engineer II to build, deliver, and maintain complex products that delight our customers and raise the performance bar. You'll design fault-tolerant systems that run at massive scale as we continue to innovate best-in-class services and applications in the AWS Cloud. You'll have an opportunity to tackle challenging technical problems, create great products that customers depend on and contribute to improving industry-wide identity federation using open protocols like SAML and OIDC in a fast-paced environment. You'll thrive by being creative, responsible, and curious, leading efforts to quickly turn code into customer solutions. If you're passionate about the massive cloud computing opportunity, have delivered high-quality solutions in hyper-growth environments, and want to solve challenging problems for customers, we want to talk to you.

Key job responsibilities
Our engineers collaborate across diverse teams, projects, and environments to have a direct impact on our global customer base. You will:

Own features end-to-end — design, implement, test, deploy, and maintain innovative software solutions to transform service performance, durability, cost, and security.
Build high-quality, highly available, always-on products.
Research and implement solutions that deliver the best possible experiences for customers.
Collaborate with engineers and stakeholders across AWS to deliver secure, scalable identity solutions.
Contribute to raising the engineering bar through code reviews, technical mentorship, and design discussions.

A day in the life
You'll design and implement solutions to help our team optimize software architecture, create metrics, implement automation and other improvements, and identify and resolve root causes of software defects. You'll also:

Build high-impact solutions to deliver to our large customer base.
Participate in design discussions, code review, and communicate with internal and external stakeholders.
Work cross-functionally to help drive business decisions with your technical input.
Work in a fast-paced development environment on critical security and availability initiatives.

About the team
We're the AWS Identity and Access Management (IAM) data plane team. We build and operate one of the largest and most important software systems in the world – one that is used by every AWS customer, makes authorization decisions about every AWS API request, and needs to scale with all other AWS services.

Security is the #1 concern and requirement for customers as they evaluate moving their workloads and resources to the cloud. AWS Identity and Access Management (IAM) enables customers to secure their workloads in the cloud by providing authentication and authorization mechanisms along with customer-facing tooling. With the growth of AWS, the workloads and access patterns keep evolving and therefore demanding the next order of magnitude in scalability.

Our team is dedicated to supporting new members. We have a broad mix of experience levels and tenures, and we're building an environment that celebrates knowledge-sharing and mentorship. Our senior members provide one-on-one mentoring and thorough, but kind, code reviews. We care about your career growth and strive to assign projects that help you develop your engineering expertise so you feel empowered to take on more complex tasks in the future.