Andrew Jivoin
I’m a Senior Full-Stack Engineer with five years of experience building scalable backend services using Node.js and PostgreSQL, and delivering reliable end-to-end features that support cross-platform mobile apps.
About
I’m a Senior Full-Stack Engineer with five years of experience building scalable backend services using Node.js and PostgreSQL, and delivering reliable end-to-end features that support cross-platform mobile apps. I design data models and API layers, build REST microservices with Express, and focus on stability by writing test suites that cover everything from database queries to user interface components.
Most recently, I’ve led mobile development for The Wendy’s Company using React Native and Expo, including user-facing content experiences and a full mobile ordering platform with cart, order history, and loyalty redemption. I also manage PostgreSQL schemas for core systems and build authentication, order processing, and payment integrations with providers like Stripe and Square—while mentoring engineers and establishing TDD and code review standards to improve quality across the team.
- 5 years' experience
- Joined September 2026
Industry experience
- Software & Internet
Work experience
Established code review processes and testing standards across JavaScript and TypeScript repositories, ensuring consistent quality before production deployment. Led mobile development with React Native and Expo, delivering user-facing screens for content consumption, interactive media playback, and personalized profile management. Led development of the Wendy’s mobile ordering platform, including menu browsing, cart management, order history, and loyalty point redemption. Mentored junior engineers on React Native state management and debugging, helping resolve cross-platform UI inconsistencies. Managed PostgreSQL schemas for user profiles, transaction logs, and inventory data. Designed and implemented Node.js/Express microservices for authentication, order processing, and payment integration with third-party providers such as Stripe and Square. Introduced TDD workflows using Jest and Supertest to unit test business logic and integration test API endpoints before merge.
Built a React Native and Expo mobile client for field agents, covering offline data capture, image upload, and secure session management. Developed mobile features including authentication flows, profile management screens, and push notification handling. Wrote SQL queries against PostgreSQL to extract usage statistics and performance data. Contributed to internal Microsoft tooling using JavaScript and Node.js. Developed CI/CD pipelines and code review standards for mobile and backend teams to enforce quality gates across development and staging environments. Maintained Express-based REST APIs, documenting endpoint changes and versioning strategies for downstream consumers. Wrote unit and integration tests using TDD practices to ensure reliable behavior for payment processing and inventory updates.
Education
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