Software Development Engineer III, AZA (Gen AI)
Amazon
- Location
- Onsite (Bellevue, Washington)
- Employment
- Full-time
- Level
- Senior Level
Posted 2 weeks ago
About the Role
Join Amazon's Aza team to build a full-stack agentic platform serving 1.5M+ employees globally. You will design and ship AI-native systems, including orchestration, sub-agents, and evaluation frameworks, impacting core HR, IT, and pay domains with high-scale reliability.
Skills
Gen AI
Agentic Systems
LLM Integration
Distributed Systems
RAG Pipelines
Infrastructure-as-Code
System Architecture
MCP Tools
API Design
Software Development
Technical Leadership
Evaluation Frameworks
Full job details
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: - 5+ years of non-internship professional software development experience
- 5+ years of programming with at least one software programming language experience
- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
- Experience as a mentor, tech lead or leading an engineering team Preferred Qualifications: - 5+ 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.
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: - 5+ years of non-internship professional software development experience
- 5+ years of programming with at least one software programming language experience
- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
- Experience as a mentor, tech lead or leading an engineering team Preferred Qualifications: - 5+ 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.