Software Engineer II (Backend), Payments

Toast

1d • Hybrid

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 Software Engineer II to join our Payments team. The successful candidate will contribute to the development of 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.

Requirements

• 2+ years of experience in designing and implementing robust backend services using Kotlin.
• 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.
• Proficiency in Kotlin-specific frameworks and libraries for building efficient backend solutions.
• Demonstrated experience with microservices architecture and containerization technologies for enhanced scalability and maintainability.

Nice To Haves

• Proficiency in DynamoDB and PostgreSQL
• Proficiency in Kotlin (or Java and willing to learn Kotlin) and Kotlin-specific frameworks and libraries for building efficient backend solutions
• Experience building mobile applications
• Familiarity with AI-augmented development workflows and tools (e.g., Claude Code, GitHub Copilot, Codex, or similar)

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 UX and PM 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

Benefits

• Competitive compensation and benefits programs
• Healthy lifestyle support
• Flexibility to meet changing needs
• Cash compensation (overtime, bonus/commissions if eligible)
• Equity
• Benefits

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed