Fullstack Software Engineer

Job Title: Fullstack Engineer

Job Type: Full-time

Location: Remote

About Us:

The AI platform for human intelligence—we build models that rigorously vet PhDs and scale human data training for frontier LLMs.

Our agent, Zara, autonomously sources and evaluates world-class researchers and data trainers—powering post-training (RLHF, evals, red-teaming) for top AI labs, modernizing staffing firms, and helping startups hire their core AI teams.

About the Role:

Join us as a Fullstack Software Engineer to design, build, and scale high-impact applications from front to back. You’ll architect robust APIs, craft intuitive interfaces, and deploy secure, cloud-native solutions. We value engineers who write clean code, communicate clearly, and thrive in collaborative environments.

Key Responsibilities:

• Develop, deploy, and maintain REST APIs and microservices using Python (FastAPI/Flask) or Node.js (TypeScript/Express/Koa).
• Build performant, maintainable frontend applications using React.js and Next.js (SSR, SSG, dynamic routing, API routes).
• Implement state management with Redux Toolkit, Zustand, or React Query.
• Design and optimize PostgreSQL schemas and queries for scalability and reliability.
• Create responsive, pixel-perfect UIs with TailwindCSS and Styled Components.
• Integrate with internal/external APIs (e.g., Slack, Google Sheets).
• Deploy, monitor, and secure apps using AWS (EC2, S3, Lambda, CloudFront, etc.) and Nginx.
• Maintain clean, well-documented code and participate in code reviews.

What We're Looking For:

• Deep hands-on experience with React.js, Next.js, and TypeScript.
• Proven ability to build and scale backend systems in Python or Node.js.
• Strong understanding of state management, asynchronous programming, and PostgreSQL optimization.
• Experience with AWS and Nginx in production environments.
• Exceptional attention to UI detail and cross-browser responsiveness.
• Excellent communication and collaboration skills.

Nice to Have:

• Experience with workflow automation, CI/CD, Docker/Kubernetes, or Infrastructure as Code (Terraform, Ansible).
• Familiarity with Pydantic, advanced TypeScript types, and performance optimization for distributed systems.