AI Prompt Engineer

About us

Today’s financial system is built to favor those with money. Grid’s mission is to level that playing field by building financial products that help users better manage their financial future. The Grid app lets users access cash, build credit, spend money, optimize their taxes, and lots, lots more.

Grid is a fast-growing team that’s deeply passionate about making a difference in the lives of millions. We’re solving huge problems and believe that every team member has a big role to play. Come join our growing team in Seattle!

The Role 

We're looking for a curious and detail-oriented Prompt Engineer Intern to join our engineering team during the semester. In this role, you'll help design, test, and optimize prompts for our backend AI agent that powers automated financial services and decision-making systems within the Grid platform. You'll create prompts that enable reliable, accurate automated financial operations.This is a hands-on technical role where you'll blend deep understanding of large language model behavior with systematic engineering practices to build prompts that deliver consistent, high-quality outputs for backend financial processing and web scraping. We prefer candidates who can start immediately.

The team

We're focused on serving our users above all else all while building a robust business. To this end, Grid's team members experience high levels of autonomy and ownership, and as a company we value curiosity, learning and growth.

At Grid, you'll be surrounded by a team that is motivated, mission-driven and pragmatic.

• Design and optimize prompts for our backend AI agent that powers automated financial processing and decision-making systems
• Conduct rigorous experiments to evaluate prompt performance, measuring accuracy, consistency, and reliability metrics across different data inputs
• Collaborate with engineering and ML teams to implement prompt strategies within production backend systems and APIs
• Develop comprehensive testing frameworks and maintain versioned prompt libraries with detailed performance documentation
• Research advanced prompt engineering techniques and conduct statistical analysis on system outputs to optimize model behavior

• Currently pursuing a degree in Computer Science
• Hands-on experience with large language models (GPT, Claude, etc.)
• Strong technical writing and analytical skills with attention to precision and systematic testing methodologies
• Detail-oriented approach to documentation, performance measurement, and systematic experimentation in a fast-paced startup environment
• Ability to commit to working minimum 4-hour blocks out of our Seattle office at least once weekly

• Direct mentorship from experienced engineers and ML researchers with real-world experience building production AI systems
• Deep technical understanding of prompt engineering for backend financial automation and exposure to enterprise-scale AI infrastructure
• Experience with performance optimization, testing frameworks, and AI system reliability in a production fintech environment
• Competitive internship compensation

To keep things simple, at Grid we're looking for people that want to change the world for the better and have the boldness to tackle complex problems with creative solutions.