HumanSignal is a human data partner for AI models and products. We design datasets, recruit domain experts, and run everything through our own platform, Label Studio. We seek a senior frontend engineer to build labeling, review, and evaluation UIs and own FE outcomes from discovery to delivery.

You will refine scope, advocate trade-offs, and collaborate with product and design to ship robust features with accessible, scalable interfaces. Prior experience shaping complex, data-heavy UIs is a plus.