Senior Developer — AI-Powered Creative Platform

Speel is building an AI-powered video and image creation platform. Users generate UGC-style video ads — unboxing sequences, talking-head reviews, product demos — by working across multiple AI models in a mode-based workspace. Think of it as a creative studio where AI does the heavy lifting, but the user stays in control.

We're looking for a senior developer to own the core platform architecture and ship it.

What you'll build

• A schema-driven mode system where adding a new AI model or creative mode is a config change, not a code change. The schema drives the UI, the AI tooling, the gallery, and the input system — one source of truth.
• An AI copilot layer that orchestrates the workspace via tool calls — switching modes, configuring settings, generating media — with a confidence model that decides when to auto-execute vs. ask the user.
• Multi-model orchestration across image and video generation models (Seedance, Kling, Veo, DALL·E, Midjourney, and more). Each has different APIs, capabilities, and pricing. Models come and go fast — the integration layer must make adding one trivial.
• Real-time progressive updates — when the AI generates 6 images, they appear one by one as they complete, not all at once. Mode switches, status messages, and generation progress stream live.
• A dual interaction model — the entire platform works fully without the AI copilot. Manual UI and copilot tool calls share the same code paths and state mutations. No divergence.
• Prompt workflow execution — users write multi-step instructions ("generate product photos, then make an unboxing video using those as start frames") and the system decomposes, sequences, and executes across modes with dependency handling.

What we're looking for

• Strong system design instincts. You think in schemas, interfaces, and clean abstractions — not in if-else chains.
• Deep experience with LLM tool-calling, agentic workflows, and prompt engineering. You've built systems where AI calls tools, not just answers questions.
• Comfort with real-time architectures — SSE, WebSockets, event-driven UI updates.
• Experience integrating multiple third-party AI/ML APIs with different interfaces, rate limits, and failure modes.
• You ship fast and make pragmatic trade-offs. We're a startup, not an enterprise.

Nice to have

• Experience building creative tools, media platforms, or AI-assisted workflows.
• Familiarity with video/image generation model APIs (Runway, Kling, Stability, Replicate, etc.).
• You've designed plugin or schema-driven systems where extensibility was a core requirement.

Details

Role type: Full-time
Compensation: Competitive salary
Stage: Early — you'll have outsized impact on the product and architecture