Principal Software Engineer, AI Domains, Alexa AI

Interested in building Amazon Alexa Machine Learning and Generative Artificial Intelligence Were building products and services that power state of the art for Amazon customers. Come join us!

The Alexa AI org is looking for a Principal Engineer to help define and build the next generation of AI-powered experiences for hundreds of millions of customers worldwide. This role sits at the intersection of advance AI research and large-scale production systems where you will architect and deliver Pragmatic AI capabilities AI that is not just technically impressive but reliably useful trustworthy and accessible to real customers in their everyday lives.

What makes this role unique:
You will be building AI experiences that work across the full spectrum of human interaction multi-modal (speech text image video) multi-lingual (global locales with distinct linguistic and cultural requirements) and multi-model (orchestrating and routing across frontier and specialized AI models to optimize for accuracy latency and cost). Your systems will serve customers across a diverse range of endpoints and form factors from voice-first devices to screen-based and mobile experiences.

Infrastructure & Systems Complexity:
Design and own the end-to-end architecture for AI capability routing and orchestration at massive scale including intelligent query classification model selection and fallback strategies across heterogeneous AI backends
Drive latency optimization across globally distributed inference pipelines including model serving infrastructure caching strategies and real-time performance monitoring to meet strict customer-facing SLAs
Build evaluation and quality assurance infrastructure including offline test sets live traffic sampling and automated regression frameworks to maintain high accuracy and reliability as models and locales evolve
Architect systems that support rapid iteration and safe deployment of new AI capabilities across global regions with robust rollback experimentation and observability tooling

Technology Vision:
Define the long-term technical strategy for how Alexa delivers high-quality low-latency AI experiences to a global customer base including the evolution of model integration patterns as the AI landscape rapidly changes
Establish engineering standards and best practices for responsible AI deployment ensuring accuracy safety and fairness are first-class properties of every capability shipped
Influence the broader AI platform roadmap by identifying capability gaps proposing architectural investments and partnering with applied science product and platform teams to close them

What were looking for:
Deep expertise in distributed systems ML inference infrastructure or large-scale AI platform engineering
Demonstrated ability to define technical direction in ambiguous high-stakes problem spaces with significant customer and business impact
Experience driving cross-functional alignment across science engineering and product organizations
A track record of delivering production AI systems that serve diverse global customer populations
Passion for building AI that is genuinely useful and trustworthy for real people






Key job responsibilities
Key job responsibilities
Lead Alexa AI AIDo orgs technical direction making critical decisions on architecture infrastructure and systems design for optimal performance scalability resilience and access patterns.
Drive innovation in architectures with GenAI models
Design and implement scalable solutions to orgs technical initiatives
Architect and build large-scale distributed systems that integrate complex datasets and support different access patterns.
Mentor and inspire a team of skilled engineers and scientists fostering technical and professional growth
Collaborate across Amazon to align technical vision and priorities influencing decisions at senior levels.
Define best practices for system architecture and engineering processes maintaining high standards for software quality and operational excellence
Lead engineering efforts that directly enhance customer experiences and business outcomes through Alexa and GenAI powered services.

About the team
The AIDo (AI Domains) org is part of Alexa AI VP and Devices and Services SVP organizations. Our vision is to build an ecosystem of AI systems and services that elevate the core LLM model performance across endpoints modalities and locales. We are the horizontal Science and Engineering team that empowers Domains and Horizontal CX owners with transformative solutions that enable rapid efficient scaling. AIDo represents a sophisticated global organization that spans multiple international locations including the US (Boston Seattle) Germany Italy and India. The teams core mission is to develop and maintain AI systems and services that enhance the performance of core LLM models across various endpoints modalities and locales.

- 12 years of non-internship professional software development experience
- 8 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
- Experience collaborating across multiple organizations and influencing key outcomes.
- Experience as a technical leader of multiple concurrent projects driving strategic technical decisions.

- Experience designing building & operating large scale highly available secure cloud infrastructure.
- Experience with AI software systems including Agents.
- 15 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
- 10 years of highly scalable systems experience

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