Senior Software Engineer-Backend

Toast creates technology to help restaurants and local businesses succeed in a digital world helping business owners operate increase sales engage customers and keep employees happy.

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 Toasts 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.

A day in the life (Responsibilities)

• Design build and deliver features for Toasts 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

What youll need to thrive (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

Special Sauce (*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
• Familiarity with AI-augmented development workflows and tools (e.g. Claude Code GitHub Copilot Codex or similar)

#LI-HYBRID
#BI-Hybrid

AI at Toast

At Toast one of our company values is that were hungry to build and learn. We believe learning new AI tools empowers us to build for our customers faster more independently and with higher quality. We provide these tools across all disciplines from Engineering and Product to Sales and Support and are inspired by how our Toasters are already driving real value with them. The people who thrive here are those who embrace changes that let us build more for our customers; its a core part of our culture.

Our Total Rewards Philosophy
We strive to provide competitive compensation and benefits programs that help to attract retain and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters changing needs. Learn more about our benefits at base salary range for this role is listed below. The starting salary will be determined based on skills experience and geographic addition to base salary our total rewards components include cash compensation (overtime bonus/commissions if eligible) equity and benefits.