Senior Product Engineer; Tech Lead

About World Labs:

We build foundational world models that can perceive, generate, reason, and interact with the 3D world — unlocking AI's full potential through spatial intelligence by transforming seeing into doing, perceiving into reasoning, and imagining into creating. We believe spatial intelligence will unlock new forms of storytelling, creativity, design, simulation, and immersive experiences across both virtual and physical worlds. We bring together a world-class team, united by a shared curiosity, passion, and deep backgrounds in technology — from AI research to systems engineering to product design — creating a tight feedback loop between our cutting-edge research and products that empower our users.

We’re looking for a Senior Product Engineer who thrives at the intersection of product and engineering. You should have strong coding skills across the stack, a deep appreciation for intuitive user experiences, and the technical expertise to design end-to-end systems. In this role, you’ll own product features end-to-end—from ideation through to building responsive, user-centric web apps and backend services. Serving as a player-coach, you will act as the engineering counterpart to product management to help with technical road mapping and sprint execution.

You will bring crucial software engineering and technical leadership experience to support a highly talented product team that currently leans heavily on design.

• Partner directly with product leadership on architectural decisions, sprint planning and technical execution.
• Ship focused, user-facing applications and developer tooling end-to-end, owning frontend, backend, and workflow design.
• Design and build complex workflows around generative models: chained and parallel generation calls, long-running async operations, streaming results, caching, retries, and graceful degradation around inference that takes seconds to minutes.
• Own the deliverable: you set and hold the quality bar for what ships under your name - correctness, performance, polish, and maintainability - and you review others' work to the same standard.
• Work directly with users and design partners; instrument what you ship, watch it get used, and iterate fast.

• 6+ years of software engineering experience (8+ for Staff), with a track record of end-to-end ownership. You ve shipped user-facing products, not just components of them, and you ve been accountable for their quality in production.
• Deep proficiency in modern web application technologies for the frontend (e.g., Type Script, React) and backend services, with a strong understanding of web architecture; especially in interactive and real-time applications with performance considerations.
• Fluency with AI-assisted development workflows, grounded in fundamentals strong enough to verify, correct, and own everything you ship — you use the tools to move faster, not to outsource judgment.
• Experience building products on top of asynchronous, long-latency, or streaming APIs.
• A product-minded approach: you form opinions about what users need, validate them cheaply, and change course on evidence.
• Excellent problem-solving abilities and a strong foundation in computer science principles.

While not required, experience in one or more of the following is a strong plus:

• Experience in 3D graphics programming and shader development, particularly web frameworks such as WebGL and three.js.
• Experience building applications around generative image, video, or 3D AI models.
• Contributions to open-source graphics or machine learning projects.
• Experience working in VFX, gaming, 3D design, or other industries that focus on high-fidelity visual outputs.

• Fearless Innovator: We need people who thrive on challenges and aren't afraid to tackle the impossible.
• Resilient Builder: Impacting Large World Models isn't a sprint; it's a marathon with hurdles. We're looking for builders who can weather the storms of groundbreaking research and come out stronger.
• Mission-Driven Mindset: Everything we do is in service of creating the best spatially intelligent AI systems, and using them to empower…