Amazon

Principal Software Engineer, AI Domains, Alexa AI

Posted On

Jan. 21, 2026

Location

Bengaluru, Karnataka

Experience Level

Freshers/Experienced

Job Type

Software Development

Apply By

March 31, 2026

Job Description

Interested in building Amazon Alexa, Machine Learning and Generative Artificial Intelligence? We’re 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 we're 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 org's 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 org's 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 team's 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.

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