Software Development Engineer (AI)

TL;DR

Software Development Engineer (AI): Building the server-side systems and distribution infrastructure for Kiro Web, an AI-powered development environment that manages multiple agent sessions with an accent on process orchestration, real-time communication, and scalable APIs. Focus on designing reliable child-process lifecycles, multiplexing WebSocket traffic across concurrent sessions, enabling multi-agent coordination, and delivering multi-platform releases through CDN-backed services.

Location: Portland, Oregon, USA

Salary: $143,700–$194,400 USD annually, plus sign-on payments and restricted stock units.

Company

Amazon AI develops AI-powered products and cloud technologies, including Kiro, an agentic software development environment.

What you will do

• Build and maintain the Kiro Web server using Node.js, TypeScript, Fastify, WebSockets, and REST APIs.
• Develop process-per-session architecture for spawning and managing kiro-cli ACP child processes, including crash recovery and session resumption.
• Implement multi-agent team orchestration, prompt routing, parallel dispatch, topology validation, and skill injection.
• Design WebSocket fan-out for multiplexing real-time notifications from concurrent agent sessions to browser clients.
• Build distribution infrastructure with platform detection, metadata services, CloudFront configuration, release automation, and update delivery.
• Implement tool approval interception, automated testing, monitoring, alerting, and on-call support.

Requirements

• 3+ years of professional software development experience, excluding internships.
• 2+ years of designing or architecting reliable and scalable systems.
• Experience developing large-scale, multi-tiered, multi-threaded, embedded, or distributed software using C#, C++, Java, or Perl.
• Experience with object-oriented design and at least one programming language.
• Bachelor’s degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field.
• Experience with software development lifecycle practices, including testing and operations, is preferred.

Culture & Benefits

• Work with a team based between Seattle and Portland that ships weekly.
• Participate in architecture reviews and contribute to technical direction.
• Comprehensive medical, dental, vision, prescription, life, and mental health benefits.
• 401(k) matching, paid time off, parental leave, and flexible spending accounts.
• Sign-on payments and restricted stock units may be included in the compensation package.