Full Stack Software Engineer, Agent Platform

- Own the agent platform across the full stack — from the internal- and client-facing React interfaces to the backend APIs and services orchestrating agents, workflows, and integrations.

- Enable hundreds of internal users and dozens of enterprise clients — ship the features, reliability, and polish that make the platform their daily driver and a confident live demo.

- Build the foundational layer other teams depend on to stand up new agent use cases, task formats, and client configurations quickly and without rework.

- Ship high-leverage product features that raise both internal productivity and the customer-facing quality of the platform.

- Translate ambiguous requirements into well-scoped technical solutions through close collaboration with Applied AI researchers, product, design, and operations.

- 2+ years of fullstack engineering experience building and shipping production software.

- Deep proficiency in JavaScript/TypeScript (React + Next.js) and a strong grasp of frontend architecture, state management, and design patterns.

- Solid backend experience in Python and/or Node.js — designing and building relational databases, REST APIs, and async task infrastructure.

- Strong design sense and empathy for end-users; you hold a high bar for usability.

- Experience with complex, high-throughput systems — pipelines, large data volumes, or multi-tenant architectures.

- High ownership mindset; able to navigate ambiguity and drive projects from design through delivery.

- Strong communication skills and ability to articulate technical and product tradeoffs clearly.

- Experience building agent frameworks, LLM-powered products, or human-in-the-loop AI workflows.

- Background in design systems, developer-facing APIs, or internal platform engineering.

- Exposure to AI tools, real-time data, or data visualization.

- Experience at top-tier tech companies or fast-scaling startups.

- The platform you build is Mercor's core agent product — run internally and shown to every enterprise client.

- The systems you ship will be used daily by hundreds of internal users and dozens of enterprise clients.

- You'll help define how new agent use cases are built, delivered, and demonstrated at Mercor.

- Your work directly shapes both how Mercor works and how customers experience us.