Software Development Engineer II, Identity and Registry, AWS IoT Core

AWS Applied AI Solutions (AAIS) is building toward a future where every business innovates with Amazon AI teammates. To get there, we build AI solutions that improve human capabilities and transform entire business functions. We create end-to-end products that surprise and delight out-of-the-box, making complex things easy and hard things possible, with no cloud experience required. We start with customers who embrace the future and build bridges to meet the rest where they are. We pursue ambitious opportunities with conviction, and we are looking for builders who share that mindset. AWS IoT Core enables billions of devices to connect securely to the cloud — and the Identity and Registry team is at the heart of it. We own the foundational primitives that give every IoT device its identity, manage its metadata, and govern how it interacts with the cloud at massive scale. As a Software Development Engineer on this team, you will design and build the systems that customers rely on to provision, authenticate, and manage their IoT fleets — from a single prototype to billions of devices in production. You'll work on challenges spanning distributed systems, security, identity management, and scalable metadata storage and retrieval, directly shaping the experience for some of the world's largest IoT deployments. This is a high-impact role where your work will be felt across the entire AWS IoT platform and by customers spanning multiple industries — from smart home and automotive to broadcasting and industrial automation. If you're excited about building foundational infrastructure that operates at Internet of Things scale and solving hard problems in device identity and registry, we'd love to hear from you. Key job responsibilities - Design, develop, and maintain core services that power device identity and state management for AWS IoT Core, serving billions of devices worldwide - Build and operate highly available, low-latency distributed systems that handle device provisioning, authentication, metadata and state management - Own the full software development lifecycle — from requirements gathering and design through implementation, testing, deployment, and production operations - Write high-quality, well-tested code and participate in code reviews to maintain a high engineering bar across the team - Contribute to system architecture by authoring and reviewing design documents, identifying trade-offs, and proposing solutions to complex technical problems - Improve operational excellence by building monitoring, alarming, and automation tooling; participate in on-call rotations and drive root cause analysis for operational events - Collaborate cross-functionally with other AWS IoT teams to deliver integrated customer experiences - Mentor and support fellow engineers through knowledge sharing, design discussions, and constructive code reviews - Identify opportunities to improve engineering processes, developer productivity, and system efficiency, including leveraging AI to automate workflows, enhance testing, and accelerate delivery A day in the life You'll spend focused time writing code — building new APIs, tuning system performance to reduce latency at billion-device scale, or improving provisioning workflows. You'll collaborate with teammates through design reviews and code reviews, and partner with other IoT Core teams on cross-cutting features. Some days you'll dig into customer escalations, tracing issues through logs and metrics. Other days you'll experiment with AI tools to improve engineering processes. No two days are the same, but every day you're building the foundation that enables billions of devices to connect to AWS IoT. The Identity and Registry team owns the foundational services at the core of AWS IoT — device identity, registry, shadow, and provisioning. We build and operate systems that enable billions of devices to securely connect, be managed, and interact with the cloud. Our team values operational excellence, customer obsession, and a strong ownership culture where every engineer has a direct impact. We're a collaborative group that enjoys tackling hard distributed systems problems together, and we're committed to growing each other through mentorship and open technical debate. We're looking for builders who are excited to work at IoT scale. About the team ABOUT AWS: Diverse Experiences Amazon 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. 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 flexible work hours and arrangements are part of our culture. When we feel supported in the workplace and at home, there’s nothing we can’t achieve in the cloud. 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 and AmazeCon conferences, inspire us to never stop embracing our uniqueness. Mentorship and 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. - 3+ years of non-internship professional software development experience - 2+ years of programming using a modern programming language such as Java, C++, or C#, including object-oriented design experience - 2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience - Bachelor's degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field - Knowledge of professional software engineering & best practices for full software development life cycle, including coding standards, software architectures, code reviews, source control management, continuous deployments, testing, and operational excellence - Knowledge of system performance, memory management, and parallel computing principles - Experience debugging, profiling, and implementing best software engineering practices in large-scale systems - Experience designing or architecting (design patterns, reliability and scaling) of new and existing systems - Experience with AWS services or other cloud offerings - Master's degree or above in Computer Science or other related discipline - Experience with IoT protocols and standards (MQTT, TLS/mTLS, X.509 certificates) - Familiarity with device identity management, provisioning workflows, or PKI (Public Key Infrastructure) - Knowledge of security best practices including authentication, authorization, encryption at rest/in transit, and credential rotation - Experience designing and operating registry-style services (metadata stores, device/asset catalogs) at high throughput and low latency - Experience with DynamoDB or other NoSQL databases at scale, including data modeling and performance tuning - Familiarity with API design (REST, gRPC) and building public-facing service APIs with backward compatibility - Experience with operational excellence practices — monitoring, alarming, on-call, runbook authoring - Exposure to load balancing, traffic shaping, or deployment strategies - Experience mentoring junior enginee