Full Stack Engineer

Overview

About Pay-i:
At Pay-i, we are solving one of enterprise AI's most critical challenges: proving ROI of GenAI investments. We transform every model call, prompt, and agent step into CFO-grade metrics, providing enterprises the financial transparency to identify winning use cases, optimize costs, and prove impact.

As our Staff Full Stack Engineer, you will be a crucial team member working closely with other Full Stack Engineers responsible for implementing our customer’s front-end experience. This is a unique opportunity to build with a deeply experienced team and GenAI leaders who like to innovate, experiment, and respond to customer feedback.

Are you excited about building an innovative product that tackles some of the most pressing financial challenges associated with leveraging Generative AI? As our Staff Full Stack Engineer, you will play a pivotal role in our mission. Your efforts will shape the user experience across our dashboards, websites, and products and lay the foundation for future growth.

• Work with Pay-i's front-end and back-end engineers to rapidly deliver both prototype and production-quality products
• Create high-quality and enjoyable user experiences by building interfaces that are simple, intuitive, performant, and reliable
• Ensure high-quality graphic standards and brand consistency across all customer touchpoints
• Implement responsive design principles to ensure seamless display across various devices and screen sizes
• Refactor existing code to improve performance, structure, and readability
• Utilize state management libraries and patterns (e.g., Redux, Context API) to manage application state efficiently
• Implement front-end security best practices, such as input validation and secure coding standards
• Implement unit tests, integration tests, and end-to-end tests using appropriate testing frameworks and tools
• Perform code reviews and participate in peer code reviews to maintain code quality
• Inform our process for ensuring maintainability, quality, and performance of our entire front-end stack

Required Qualifications:

• 7+ years of experience, and insatiable curiosity that has only grown during that time
• Deep expertise in modern client Java script, HTML 5, CSS, and Browser Dev Tools
• Practical protocol knowledge of DNS, HTTP, and OAuth2
• Experience with git, bash, Docker, and Python web server development
• Excel at working in a fast-paced "bring up/tear down" environment
• Comfortable working in ambiguous environments and defining the path forward
• Proven experience building external customer-facing products
• Self-directed and self-aware, you have strong opinions and a stronger work ethic
• Cloud experience (AWS, Azure, and GCP)

• 10+ years of experience
• Highcharts, Bootstrap 5+
• Experience building a SPA and/or PWA in Java script
• Full-stack engineering capabilities

• Top-of-the-line health insurance
• Discretionary time off
• Opportunity to grow with the company and manage a team
• Fast-paced, execution-focused environment with clear goals
• Collaboration with and mentoring from an extremely experienced founding team

• Based in Bellevue, WA
• Local, in-office presence preferred
• Occasional hybrid arrangements possible

You ll join an extremely experienced team with a unique, patented value proposition and clear goals. We re well-funded, well-connected, and set up for success—now we need the right people to execute on our vision. As one of our early technical hires, you ll have complete ownership over the front-end architecture and the opportunity to shape our engineering culture as we grow.

Pay-i is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.