Database & Infrastructure Engineer (Full Stack)

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Description

ABOUT KLED Kled is building the largest opt-in human data network in the world. We are not a labeling firm. We are not a task marketplace. We are a consumer application where people upload their real photos, videos, and documents and get paid continuously. We then filter, standardize, and license that data to frontier AI labs and enterprises that need fresh, rights-aware training data. 5–3M uploads per day • Raised $5M+ from investors behind SpaceX, Airbnb, Coinbase, xAI, OpenAI, Anthropic, Spotify, Lyft, Uber, and more Our mission is to let anyone download the app and earn a real living wage from uploading their data. ABOUT THE ROLE Database & Infrastructure Engineer (Full-Stack Systems) We process millions of files per day and store hundreds of millions of media records. Your job is to make our data layer world-class. You will: • Optimize and scale our PostgreSQL (Supabase) infrastructure • Design indexing, partitioning, and query strategies for large-scale media datasets • Improve performance across ingestion, enrichment, and retrieval pipelines • Build internal tools for querying and auditing large datasets • Create customer-ready dataset sample packs • Design and automate dataset exports and delivery pipelines (S3, secure transfers, custom formats) • Work across backend, ML, and product teams to support new features This is not just DBA work. You’ll help design the systems that move and package the data powering frontier AI labs. WE’RE LOOKING FOR • Strong PostgreSQL expertise (indexing, partitioning, performance tuning) • Experience working with large datasets (100M+ records preferred) • Deep understanding of storage systems (S3 or similar object storage) • Strong backend experience (TypeScript, Python, or similar) • Comfort building internal tooling and automation scripts • Ability to mo

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