Senior Backend Engineer, AI

The Pitch Slate’s product already uses AI across the stack — background removal, active speaker detection, auto-captioning, content suggestions, and image generation — but each of these is its own independent integration. We need a Senior Backend Engineer focused on AI to bring this together: unifying how we integrate models, building the infrastructure that makes AI features reliable at scale, and helping us move faster on the next wave of AI-powered capabilities. What You’ll Actually Do Build the AI platform layer Design and build the shared infrastructure for AI integrations across Slate’s backend: model routing, prompt management, response caching, fallback handling, and cost observability Refactor existing one-off AI integrations (background removal, captioning, etc.) onto a unified platform Own the reliability, performance, and cost-efficiency of Slate’s AI systems Enable new AI features Work closely with the AI Product Engineer and product team to bring new AI capabilities to production Build the backend systems that power real-time AI features — handling streaming, async processing, and latency constraints Evaluate and integrate new models and APIs as they become available Raise the quality bar Define evaluation frameworks and monitoring to track AI feature quality over time Build systems to detect and alert on model regressions or degraded outputs Ensure AI features meet the same reliability bar as the rest of Slate’s infrastructure You’d Be a Great Fit If You have the experience: 5+ years of backend engineering experience, with a track record of shipping production systems Hands-on experience integrating and operating LLMs or ML models at scale Strong systems thinking — you design for reliability, observability, and cost from the start You’ve done work like this before: Built shared AI infrastructure used by multiple teams or features Designed async processing pipelines for ML workloads Worked with OpenAI, Anthropic, Replicate, or similar APIs in production You work the way we work: You own the outcomes, not just the tasks You communicate clearly and raise issues early You use AI tools in your own workflow and think about how to apply them to hard engineering problems Tech Stack Node.js, TypeScript, PostgreSQL, Redis, AWS, OpenAI / Anthropic APIs, Replicate The Details Location: Remote, anywhere from EST (UTC-5) to UTC+2 Reporting to: Maciej Kucharek, Head of Engineering Compensation: US $170k–200k | Rest of World $95k–140k USD + equity Benefits Equity options Unlimited PTO (we actually take it) $200/month wellness stipend Health insurance stipend Home office budget About Slate Slate is the creative workspace for brand social teams. We help teams create and ship on-brand content fast with an all-in-one editor, built-in asset management, and seamless creative file workflows, backed by hands-on support from people who have done the job. Teams across top sports leagues and global brands like Amazon and Hoka use Slate every day to elevate their social presence. Note: We do not sponsor work visas. Slate is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees, regardless of background, identity, or experience.

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