Software Development Engineer II, AZA (Gen AI)

Socket.dev; Bellevue (WA); On-site; USD 140,000 - 190,000; Full time

Job summary

Amazon is hiring an SDE-II to build AI-native systems for Aza, its internal AI assistant, serving 1.5M+ employees. You will design and ship agentic components, orchestration, and sub-agents on Strands SDK with ECS Fargate, contributing to real-time APIs and infrastructure-as-code.

You'll work on greenfield Gen AI features like inline workflows, voice-enabled agents, and RAG pipelines, balancing correctness with high-scale reliability.

Qualifications

• 3+ years of non-internship professional software development experience.
• 2+ years of design/architecture experience for new and existing systems.
• Experience programming with at least one major programming language.

Responsibilities

• Design and build agentic systems: orchestration, skills, sub-agents, MCP tools, evaluation frameworks
• Ship features end-to-end from design through production deployment
• Work across the stack: LLM integration, distributed systems, real-time APIs, infrastructure-as-code
• Collaborate with Sr. PE, PEs and Sr. engineers on architecture decisions that shape the platform's future

Skills

Software development

Design patterns

Distributed systems

LLM integration

Architectural thinking

Education

Bachelor's degree in Computer Science

Tools

Strands SDK

ECS Fargate

IaC

Job description

Aza is Amazon's primary internal AI assistant, serving 1.5M+ employees globally across HR, IT, pay, benefits, and workplace domains. We're not wrapping an LLM with a chat UI — we're building a full-stack agentic platform: 60+ production sub-agents, multi-turn orchestration, real-time skill routing, MCP-based tool integrations, and enterprise-grade evaluation systems.

We're looking for an SDE-II who wants to build AI-native systems from the ground up.

What makes this role unique:

• You'll build the agent, not just use one. Aza 2.0 is built on Strands SDK with dedicated ECS Fargate compute, custom orchestration, and a plugin architecture spanning 60+ sub-agents. You'll own real components of this system.
• Greenfield Gen AI engineering. We're actively shipping: agentic inline workflows, voice-enabled agents, RAG pipelines, progressive skill loading, and a self-service developer platform for 50+ away teams building on Aza.
• Complex, high-stakes domain. Aza handles questions about pay, benefits, leave, HR policies — across every jurisdiction Amazon operates in. Correctness matters. This is where AI reasoning meets real-world constraints.
• Scale that doesn't exist elsewhere. Millions of conversations monthly. Sub-3-second response latency. Production reliability with Sr. PE-level architectural standards.
• Visibility and mentorship. SVP-level visibility, Sr. PE driving architectural vision, and a fast-shipping team where engineers own end-to-end features in production.

Key job responsibilities

1. Design and build agentic systems: orchestration, skills, sub-agents, MCP tools, evaluation frameworks
2. Ship features end-to-end from design through production deployment
3. Work across the stack: LLM integration, distributed systems, real-time APIs, infrastructure-as-code
4. Collaborate with Sr. PE, PEs and Sr. engineers on architecture decisions that shape the platform's future

Basic Qualifications: - 3+ years of non-internship professional software development experience - 2+ years of non-internship design أو architecture (design patterns, reliability and scaling) of new and existing systems experience - Experience programming with at least one software programming language

Preferred Qualifications: - 3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience - Bachelor's degree in computer science or equivalent

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Our 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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.