Principal Full-Stack Software Engineer

About Aldea

Aldea is a multi-modal foundational AI company reimagining the scaling laws of intelligence. We believe today's architectures create unnecessary bottlenecks for the evolution of software. Our mission is to build the next generation of foundational models that power a more expressive, contextual, and intelligent human–machine interface.

Aldea is seeking a Principal Full-Stack Engineer to lead development of our core developer platform, console, dashboards, and customer-facing workflows. You’ll own major architectural decisions, build high-quality product surfaces end-to-end, and partner closely with Product, API, and Research teams to bring new speech + LLM capabilities to customers.

• Technical Strategy & Architecture: Drive the future of Aldea’s customer-facing stack. From frontend architecture to API design best practices, you’ll make high-impact technical decisions that shape how developers interact with our platform.
• Lead Complex AI Integrations: Architect the full-stack systems required to stream real-time audio and LLM tokens to the browser. You will tackle challenges like handling non-deterministic model outputs, managing WebSocket connections at scale, and visualizing voice-to-text latency.
• Drive Developer Experience (DX): Own the "Time to First Hello World." You will build self-serve onboarding flows, interactive API playgrounds, and observability dashboards that allow developers to debug complex LLM/audio workflows in real-time.
• Own backend systems that power auth, usage, billing, and analytics
• Cross-Functional Partnership: Partner directly with Product and Research leadership to translate experimental AI capabilities into stable, production-ready product features.
• Establish engineering best practices, code quality, and system design standards
• Mentor engineers and guide technical strategy for the product surface area

• Full-Stack Mastery: Deep expertise in TypeScript/React (performance tuning, state management, visualization) and strong backend fluency in Python, Go, or Node.js. You can debug a race condition in the database and a re-render loop in the browser in the same afternoon.
• Platform & API DNA: You have built public-facing APIs, developer consoles, or SDKs. You understand that an API is a product, not just a pipe.
• Proven ability to design scalable architectures and lead complex builds end-to-end
• Systems Expertise: Solid understanding of distributed systems fundamentals—caching strategies (Redis/Memcached), database design (Postgres/DynamoDB), and cloud infrastructure (AWS/GCP).
• Strong product sense and comfort working closely with PM/design

• AI/ML Fluency: You don't need to be a researcher, but you understand the constraints of deploying AI: context windows, token streaming, latency budgets, and cost management.
• Experience building real-time media applications (WebRTC, audio streaming, visualization).
• Background in usage metering, billing, or multi-tenant SaaS architectures
• Startup or 0→1 product experience

• A polished, reliable developer platform that customers love
• Faster iteration cycles across research → API → product
• Scalable systems and strong engineering foundations for future growth