Senior Full-Stack Engineer - AI

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Company: nexus IT group

Location: San Francisco, CA 94112

Description:

We're building the future of AI-driven voice technology, and we need a Senior Full-Stack Engineer to architect and ship high-impact features that directly shape our product and revenue. You'll work at the intersection of cutting-edge AI, scalable infrastructure, and customer-facing applications-owning projects from 01 prototyping to 1n scaling.

This is a high-leverage role where you'll collaborate with top AI researchers, optimize large-scale audio data pipelines, and deploy real-time ML models that redefine how users interact with voice technology. If you thrive in fast-moving, early-stage environments and want to build foundational AI infrastructure, we'd love to hear from you.
What You'll Do
  • Build end-to-end, full-stack features that directly impact customers and revenue.
  • Solve high-stakes audio AI challenges, from scalable data pipelines to real-time ML model deployment.
  • Drive technical decisions at the frontier of AI, working alongside world-class researchers.
  • Own and architect solutions from 01 prototyping to 1n scaling, shaping our core product and infrastructure.
Technical Challenges You'll Tackle
  • Architect and ship customer-facing full-stack features that enable rapid iteration.
  • Design scalable engineering solutions for processing and analyzing terabytes of audio data.
  • Optimize data pipelines for large-scale audio dataset generation and quality control.
  • Develop and deploy audio-focused ML/LLM models, from research to production.
Who You Are
  • 2-6 years as a senior full-stack engineer with startup experience (1-2 years at an early-stage or high-growth startup).
  • Proven track record of shipping end-to-end features that drive revenue and user impact.
  • Technical skills:
    • Frontend: Next.js, TypeScript, TailwindCSS
    • Backend: Node.js, tRPC, PostgreSQL
    • Experience (or strong interest) in audio AI, signal processing, or ML deployment
  • Leadership presence-able to mentor junior engineers and drive technical discussions.
  • Exceptional at breaking down complex problems and communicating system designs.
Ideal Background
  • CS degree from a top 25 university (or equivalent experience).
  • Startup-minded-you thrive in ambiguity and move fast.
  • Passion for voice technology, AI, and building from the ground up.
Why Join?
  • Work on bleeding-edge AI with a world-class team.
  • Build foundational infrastructure for a category-defining product.
  • Competitive compensation, equity, and the chance to shape the future of voice tech.

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