System Development Engineer II, Intelligent Cloud Hosting

Amazon’s Intelligent Cloud Hosting (ICON) Team is looking for a System Development Engineer to join our team in San José, Costa Rica.Who are we? We host Amazon’s websites. That includes all of Amazon’s global marketplaces and partner portals, and all of Amazon’s consumer experiences like Kindle, Alexa, Amazon Video, Mobile Application; Physical Stores, Luna.... Not only we help deliver the html that delights our customers, we make sure that all underlying transactions are processed error‑free. This includes payments, tax, contracts, returns, inventory, and notifications; and brand new experiences that have never been done before.In short, we perform cloud infrastructure management at the biggest scale in the known universe. We also look good doing it.We’re a diverse international team made up of engineers, developers, administrators and managers. We’re obsessed with operational quality, security, reducing cost, increasing availability and keeping the largest eCommerce infrastructure purring.Our team has offices in Seattle, New York, Dublin, San Jose, Sydney and Bangalore.We’re looking for a Systems Development Engineer who is inventive, who understands operational excellence, and can work to scale.A big part of our job is creating and updating strategic SRE tool‑kit built on AWS technology. We use these tools across Amazon to deploy, monitor and operate the hundreds of thousands of services that power our highly distributed architecture. Our tools include orchestration, predictive analytics, monitoring, problem diagnosis and automated repair. These let us deploy configurations that intelligently manage how traffic flows through our highly distributed architecture to our delighted customers.Key job responsibilities We do almost everything in Linux. We’re looking for people who are not just hobbyists, but people who’ve tweaked their favorite distro to get things working just the way they like them.We need people with a solid grasp of networking fundamentals. This includes experience with load balancers, switches, and routers.We need people who can design, implement, maintain and deploy components that solve problems in a complex ecosystem. We work in lots of different languages (not limited to, but most often Python and Java). It is more important to us that you understand coding in the context of working in distributed systems and/or widely scaled web applications.We need people with strong written and verbal communication skills and an ability to communicate effectively with both technical and non‑technical individuals.We want to work with people whose passion for problem solving goes hand‑in‑glove with their debugging and troubleshooting skills.We need people with an ability to self‑motivate and follow‑through on projects. To us, that means being detail oriented, passionate, and delivering results.About the team We own connecting Amazon worldwide websites and other consumer experiences such as Kindle, Amazon Video, and Alexa to the internet, as well as ensuring the highest level of availability, security and privacy of the web services that power the experience we deliver to our customers worldwide. We abstract, centralize and optimize the infrastructure management from individual service teams and operate 120+ Tier‑1 services on behalf of teams in the Worldwide Consumer org. We own the routing layer built on top of AWS technology that connects traffic at low latency and protects the web services against malicious robot and DDoS attacks.Basic Qualifications Bachelor’s degree in computer science or equivalent2+ years of non‑internship professional software development experience2+ years of designing or architecting (design patterns, reliability and scaling) of new and existing systems experience2+ years of administrative experience in networking, storage systems, operating systems and hands‑on systems engineering experienceKnowledge of systems engineering fundamentals (networking, storage, operating systems)Experience programming with at least one modern language such as C++, C#, Java, Python, Golang, PowerShell, RubyPreferred Qualifications Knowledge of and proficiency in the use of Python and/or JavaKnowledge of best practices for software deploymentExperience with infrastructure managementExperience with eCommerce retail website(s)Detail‑oriented, passionate, and able to deliver resultsOur 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.Posted: September 22, 2025 (Updated 10 days ago)Posted: October 23, 2025 (Updated 26 days ago)Posted: November 19, 2025 (Updated about 1 month ago)Posted: November 11, 2025 (Updated about 2 months ago)Posted: November 10, 2025 (Updated about 2 months ago)Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.#J-18808-Ljbffr