Senior Software Engineer (Backend), Payments

Toast

1d•Remote

About The Position

Fintech at Toast operates one of the most critical portions of the Toast infrastructure: processing payments on behalf of our restaurants and ensuring that restaurants are paid in a timely manner. Payment processing is a key source of Toast’s revenue and also the lifeblood of our customers; we process millions of dollars in transactions per day. We are seeking a Senior Software Engineer to join our Payments team to build out our unified payment processing solution. This platform offers a single, integrated service for payment acceptance across various channels and supports a configurable enterprise approach. It is designed to allow a build-once, available-to-all strategy for both existing and emerging payment methods. The successful candidate will contribute to the development of services providing supporting and core functionality within and around this payment processing solution.

Requirements

5+ years of experience in designing and implementing robust backend services
Proven ability to develop scalable and secure APIs that integrate with various internal/external systems
Knowledge of best practices in API lifecycle management, including versioning, documentation, and deprecation strategies
Demonstrated experience with microservices architecture and containerization technologies for enhanced scalability and maintainability

Nice To Haves

Demonstrated proficiency with DynamoDB or PostgreSQL
Proficiency in Kotlin (or Java and willing to learn Kotlin) and Kotlin-specific frameworks and libraries for building efficient backend solutions
Experience with modern data architectures (event sourcing, OLAP, ETL/ELT, streaming data)
Experience designing payments APIs
Familiarity with PCI-DSS

Responsibilities

Design, build, and deliver features for Toast’s payments products
Develop and implement automated test suite to ensure the code shipped to our customers meets the highest quality standards
Roll features out to customers, including monitoring for success
Collaborate with our PM (and UX) on the definition and design of features
Partner with a wide array of teams across Toast
Work with experienced engineers to deliver design and code review