Software Engineer

At Labelbox, we're building the critical infrastructure that powers breakthrough AI models at leading research labs and enterprises. Since 2018, we've been pioneering data-centric approaches that are fundamental to AI development, and our work becomes even more essential as AI capabilities expand exponentially.

• Eval systems that run millions of agent trajectories to measure model and product quality.
• Fine-tuning pipelines that turn evaluation signals into measurable agent improvements.
• Agent-first product surfaces: UX and infrastructure for workflows where the user is a model or an agent operator.
• The systems behind hundreds of thousands of AI interviews used to source and match freelance workers to projects.
• Infrastructure that scales to the throughput frontier labs actually need.
• Integration of the latest models and capabilities into production within days of release.

• 4+ year track record of shipping systems customers and other engineers rely on.
• You build full stack prototypes fast and they hold up. The v1 you ship becomes the foundation the rest of the team builds on.
• Strong system and API design judgement. Hard architecture and product calls land with you. You make them, defend them under pressure, and update fast when someone else is right.
• You ship production code with coding agents daily. You know where they break and what it takes to make them reliable to further accelerate the team's velocity.
• You set direction by being the example. Other engineers reach for your designs and your code as the reference.
• You move fast in ambiguous, startup-pace environments with influence over authority.
• You have worked in all parts of the stack.
• Deep proficiency in TypeScript and/or Python.

• High-Impact Environment: We operate like an early-stage startup, focusing on impact over process. You'll take on expanded responsibilities quickly, with career growth directly tied to your contributions.
• Technical Excellence: Work at the cutting edge of AI development, collaborating with industry leaders and shaping the future of artificial intelligence.
• Innovation at Speed: We celebrate those who take ownership, move fast, and deliver impact. Our environment rewards high agency and rapid execution.
• Continuous Growth: Every role requires continuous learning and evolution. You'll be surrounded by curious minds solving complex problems at the frontier of AI.
• Clear Ownership: You'll know exactly what you're responsible for and have the autonomy to execute. We empower people to drive results through clear ownership and metrics.