Principal Engineer - Architect I

At TreviPay, we believe loyalty begins at the payment. Thousands of sellers use our global B2B payments and invoicing network to provide choice and convenience to buyers, open new markets and automate accounts receivables. With integrations to top eCommerce and ERP solutions and flexible trade credit options, TreviPay brings 40 years of experience serving leaders in manufacturing, retail and transportation. Every day, TreviPay employees are challenged and empowered in a supportive, collaborative, entrepreneurial environment. TreviPay is seeking a Principal Engineer – Architect I to help build and evolve our core B2B billing and payments platform. This role is ideal for an experienced engineer who enjoys working across the stack, designing scalable APIs, building intuitive user experiences, and contributing to modern, cloud‑native systems that power real‑world financial products used globally. What You Need to Succeed 10+ years of full‑stack web application development experience Proven experience designing, building, and maintaining RESTful APIs Experience creating reusable, scalable UI components Strong understanding of modern build pipelines and development tooling Demonstrated experience writing and maintaining automated unit tests Experience working in an Agile development environment 3+ years of experience working in Unix/Linux environments Your Background Will Stand Out If You Also Bring Ruby on Rails 6+ experience (required) Hands‑on experience with modern JavaScript frameworks Experience building and deploying applications on AWS (required) Experience with Docker and Kubernetes Oracle RDBMS experience Experience using LLMs and AI‑assisted development tools (e.g., GitHub Copilot, Cursor) to improve development velocity and code quality Application Stack & Technologies Our engineering teams work with the following technologies: Backend: Ruby on Rails (required) Front End: JavaScript (required), Ember.js, HTML, CSS Database: Oracle 19c Infrastructure & DevOps: Docker, Helm, Kubernetes (working knowledge expected) Version Control & CI/CD: GitLab AWS Technologies: SNS, SQS, S3, RDS, Lambda