Senior AI Architect

Nexxa.ai is building artificial super intelligence for heavy industries - enabling machines, systems and operations to think, decide and act autonomously across manufacturing, large-scale infrastructure, logistics and legacy environments. Our mission is to translate deep technical breakthroughs into operational reality, solving some of the hardest systems-level problems in industry. Job Title: Senior AI Architect Location: Sunnyvale / SF, CA (Hybrid) Level: Senior - Architect (based on experience) About the Role We're looking for a Senior AI Engineer who has spent the last 2+ years building real AI products at the frontier-someone who understands modern AI deeply and has turned that understanding into production systems used by customers. This role is ideal for candidates with experience at a frontier AI company, top research lab, or PhD-level background who want their work to directly shape product and user experience rather than remain purely research-driven. You will own AI-powered features end-to-end, working closely with product and engineering to bring cutting-edge models into reliable, scalable, and user-facing systems. What You'll DoOwn and deliver AI-driven product features end-to-end, from problem definition to production rolloutDesign AI systems that are deeply grounded in company data, using large-scale datasets to create rich context for modelsPartner with data engineering and analytics teams to:Leverage data warehouses and lake house architectures (e.g., Snowflake, BigQuery, Redshift, Databricks)Define data models and pipelines that power AI use casesApply data science best practices to understand user behavior, system performance, and model impactBuild and maintain data-driven context layers for AI systems, such as:Retrieval and ranking pipelinesFeature stores or embedding indicesAggregations and transformations over large datasetsTranslate raw, messy, large-scale data into clean, structured inputs that improve model quality and reliabilityMake pragmatic tradeoffs across data freshness, model performance, latency, and costDefine evaluation, monitoring, and feedback loops using both offline analysis and production metricsCollaborate closely with product managers to align AI capabilities with user needs and business goalsIterate quickly: ship, measure impact, refine models and data pipelines, and repeat Required Qualifications5+ years of related professional experience in software engineering, machine learning, data science, or closely related technical rolesAt least 2+ years of recent, hands-on experience working deeply in modern AIAI must be a primary responsibility, not a side project or minor component of the roleOne or more of the following backgrounds:Senior-level engineer or applied scientist at a frontier AI companyPhD in Machine Learning, AI, Computer Science, or a closely related fieldExperience in a top academic or industrial AI lab, combined with strong product executionStrong experience applying modern deep learning techniques (e.g., transformer-based models) to real-world problemsProven ability to ship AI-powered features to production and maintain them over timeExcellent programming skills in Python, with experience in production ML frameworks (e.g., PyTorch, JAX)Ability to independently scope ambiguous problems and deliver end-to-end AI solutions in collaboration with product and engineering teams Preferred QualificationsPublications at top venues (e.g., NeurIPS, ICML, ICLR, ACL, CVPR), or equivalent industry impactExperience fine-tuning, aligning, or evaluating large models (e.g., RLHF, preference modeling, eval harnesses)Ability to reason deeply about model behavior, failure modes, and scaling tradeoffs What Success Looks LikeYou can own ambiguous, high-stakes AI problems end-to-endYou are comfortable operating where research meets productionYou bring strong technical judgment on what actually works in practice, not just in papersYou raise the bar for AI rigor, speed, and quality across the teamYou help define what's next, not just execute what's known Why JoinNexxa.AI?Innovative Environment: Play a critical role in transforming heavy industries through groundbreaking AI and automation technologies.Collaborative Culture: Be part of a team that values innovation, discipline, and continuous improvement.Professional Growth: Benefit from significant opportunities for career development and advancement.Competitive Compensation: Enjoy a comprehensive salary and equity package reflective of your expertise and contributions. If you're passionate about development and eager to shape the infrastructure powering advanced AI solutions, we'd love to connect.