Job Description

Senior / Staff Full-Stack Software Engineer

San Francisco CA (Onsite 5 Days/Week)
$200K$300K Competitive Equity

Were partnering with a fast-growing AI startup building next-generation productivity software at the intersection of desktop applications AI agents and workflow automation.

This company is building the future AI operating layer for knowledge work an AI-native desktop assistant that understands everything happening across your workflow in real time.

Their product integrates directly into the desktop environment captures context across applications and helps users operate significantly faster without constantly switching tools tabs or workflows.

Backed by top-tier investors with $50M raised they are still an extremely lean engineering organization where every engineer has outsized ownership and influence.

This is not a role where you inherit a narrow surface area inside a large org. Youll help shape the architecture product direction runtime systems and AI-native user experience from the ground up.

Theyre looking for highly technical engineers who thrive in fast-moving environments and enjoy solving hard product and systems problems across desktop infrastructure performance optimization native integrations and AI workflows.

What Youll Own

• Build and scale a cross-platform desktop application - Work across Electron TypeScript React Swift and C to ship performant user-facing systems.
• Own systems end-to-end - Engineers own architecture implementation performance instrumentation debugging and production delivery.
• Work on AI-native product experiences - Build features powered by LLMs context orchestration workflow automation and native desktop integrations.
• Improve performance and reliability - Solve problems related to latency memory usage telemetry observability and runtime stability.
• Help shape technical direction - Strong engineering opinions are valued. Youll contribute to architectural decisions tooling frameworks and long-term product direction.
• Work closely with a tiny elite team - The company operates with very little bureaucracy and a very high degree of ownership autonomy and trust.

What Theyre Looking For

• Strong engineering fundamentals Experience shipping production software with real ownership and operational responsibility.
• High-agency startup mentality Comfortable operating in ambiguity moving quickly and solving problems independently.
• Strong full-stack experience TypeScript React and modern product engineering environments.
• Native/Desktop systems exposure Experience with Electron Swift C desktop applications or OS-level integrations is highly valuable.
• Product-minded builder Cares deeply about UX performance reliability and product quality.
• AI curiosity Experience with AI/LLM-powered features copilots or workflow automation is a strong plus.

Technical Environment

TypeScript React Electron Swift C LLM Integrations Desktop Runtime Systems Cross-Platform Architecture Telemetry & Observability AI-Native Workflows

Ideal Backgrounds

Especially interested in engineers from:

• Early-stage startups
• AI-native product companies
• Developer tooling or productivity software companies

Former founders open-source contributors and engineers with strong side projects are especially compelling.

Candidates looking for narrowly scoped enterprise environments or just another job are unlikely to be a fit.

Why This Opportunity Is Worth Your Time

• Massive ownership: Youll join a very small engineering team where every engineer shapes the roadmap architecture and technical direction.
• Technically difficult problems: The work sits at the intersection of desktop infrastructure AI systems performance engineering and human-computer interaction.
• AI-native product exposure: Youll help define what next-generation AI user experiences look like in practice.
• Strong funding early-stage upside: Backed by elite investors with significant runway while still early enough for meaningful equity and influence.
• This is the kind of environment where strong engineers can move fast solve hard problems and have outsized impact on both the product and company trajectory.

This is the kind of environment where youll work hard move fast and build systems with outsized impact. If you want broad ownership and the chance to help define what AI-native software looks like in the real world apply now!