Jobs at Circle (circle.so)

Build and own evaluation infrastructure, observability tooling, datasets, annotation workflows, and diagnostic systems for production AI agents. Lead experiments across prompts, models, routing, caching, cost, and latency. Diagnose failures across planning, tool use, and agent execution, while partnering with AI Core engineering. Manage and grow the AI Quality team as a hands-on player-coach, contributing directly to production code and technical direction.

Own growth for Circle’s Discover marketplace by driving traffic, GMV, and transaction volume. Lead experimentation, lifecycle email, subscriber acquisition, SEO/AEO, creator success, funnel reporting, and retention initiatives. Partner with product, paid media, data, brand, partnerships, the GM, and co-founders to shape and execute marketplace growth strategy in a hands-on player-coach role.

Translate English software UI text and online marketing content into natural European Spanish. Maintain meaning, tone, variables, formatting, glossaries, and style guidelines using key-based localization tools. Review and resolve linguistic QA issues, communicate availability and delivery risks asynchronously, and coordinate with Circle and another translator to maintain coverage. Work independently as a remote contractor while collaborating primarily through Slack.

Translate software UI text and online marketing content from English into natural European Portuguese. Preserve meaning, tone, formatting, variables, and cultural conventions while following Circle’s glossary and style guide. Use key-based localization tools, resolve linguistic QA issues, communicate availability and risks asynchronously in Slack, and coordinate coverage with another translator. The role requires professional localization experience, native-level European Portuguese, strong English communication, independent judgment, and familiarity with SaaS or digital products as a bonus.

Translate English software UI text and online marketing content into natural, culturally appropriate Italian. Preserve meaning, tone, variables, formatting, and brand guidelines while using key-based localization tools. Review linguistic quality issues, communicate availability and delivery risks asynchronously, and coordinate with Circle and another translator. The role is a remote independent-contractor engagement with limited meetings and regular Slack collaboration.

Lead Circle’s creative direction and brand narrative across launches, campaigns, advertising, video, events, partnerships, and other major company moments. Work closely with founders, design, product marketing, paid media, video, and events teams to create distinctive, high-performing storytelling. Shape creative concepts, scripts, copy, and experiences while raising quality through influence, collaboration, and strong creative judgment.