Sr. Full Stack Engineer

As a Sr. Full Stack Engineer, you’ll operate with autonomy in a small, fast-moving team, working directly with the CTO and founding product engineer to scale Fuser’s core platform. This is a hands-on engineering role - you will spend most of your time designing, coding, and shipping features across the stack.

We’ve launched our public beta with a strong foundation - 100k+ lines of code, multiplayer infrastructure, a node-based canvas, and dozens of AI integrations. Now we’re building toward collaboration, subgraphs, post-production, and operation nodes. You’ll help ship features, shape abstractions, and keep Fuser fast, stable, and expressive for creative professionals.

What You’ll Do

• Build and ship key features across the stack with the founding team
• Own complex systems such as multiplayer, asset pipelines, or execution flows
• Architect clean, scalable abstractions that simplify complexity without limiting control
• Improve performance, reliability, and developer experience
• Help define the architecture for future AI-native UI/UX patterns
• Collaborate tightly with design and product - we move quickly and iterate often, Frontend: React 19, React Router 7, Zustand, React Flow, Three.js Backend: Cloudflare Workers, tRPC, Drizzle ORM, PartyKit, Durable Objects Database & Storage: Supabase (PostgreSQL), R2 AI Integrations: 50+ APIs (OpenAI, Anthropic, Runway, FAL, and more)

• 5+ years of experience shipping full-stack applications
• Strong skills in React + TypeScript, with backend depth in Node, tRPC, or Cloudflare Workers
• Understanding of distributed or real-time systems
• Experience designing APIs, databases, and data flows
• Curiosity about creative tools, design systems, or AI interfaces
• A builder mindset - you enjoy coding daily and owning your work end-to-end

Bonus Points For:

• Experience with canvas or node-based tools (React Flow, Three.js, WebGPU)
• Familiarity with AI or creative software
• Open-source contributions or creative coding background

• LA-based core team - the team works hybrid, and you’ll collaborate remotely via async tools, Slack, and regular touchpoints.
• Optional in-person team weeks - in Los Angeles for planning, onboarding, or deep collaboration.
• Creative-first culture - we care about accessibility, design, and feel.
• High trust, high standards - ownership early, autonomy always.
• Small team, big impact - every commit shapes the future of the product.

Compensation & Benefits

• $80K-$180K USD depending on experience and zone (equity included)
• Signing bonus upon joining
• Healthcare, dental, vision, and 401(k) (U.S. only)
• Flexible hours and focus on deep work
• Generous equity and real product ownership
• Mentorship and leadership growth as we scale while staying hands-on

How We Interview

1. Intro Call - Meet one or two of us to talk about your background, our mission, and how we work.
2. Technical Conversation - Complete a live technical assessment based on a real-world problem followed by a discussion on your approach to architecture, problem-solving, and building for usability.
3. Technical Demo - A scoped technical project with compensation
4. Team Conversation - Meet with core team and have a discussion about collaboration, culture, and long-term vision.

We welcome candidates who may not have the “right” title but have the skills, mindset, and drive to thrive here.

Fuser is a creative technology company founded by artists, educators, and engineers. We’re building tools for professionals who ideate, orchestrate, and deliver with intention. Our flagship product is a collaborative canvas for working across text, image, video, audio, and 3D, powered by the latest AI models.

We’re a small team in Los Angeles designing the future of creative software: joyful, intuitive, and powerful tools for real-world storytelling and production.