Staff Software Engineer- Backend

Toast; Dublin; On-site; EUR 80,000 - 100,000; Full time

Benefits offered by this job

Comprehensive medical, dental, and vision coverage

Retirement plans

Generous paid time off

Flexibility to support a healthy lifestyle

Job summary

Toast is seeking a Staff Software Engineer to join our Payments team in Dublin. This role involves designing and implementing secure backend services for our unified payment processing solution, collaborating across teams, and leading junior engineers.

The ideal candidate has 8+ years of experience, strong skills in API development, and a solid understanding of microservices architecture. Join us for competitive compensation and a supportive work environment.

Qualifications

• 8+ years of experience in designing and implementing robust backend services.
• Ability to guide and mentor junior engineers in best practices.
• Experience with API lifecycle management and versioning.

Responsibilities

• Plan, design, build, and deliver features for payment products.
• Collaborate with PM and UX to define features.
• Monitor and ensure success post-deployment.

Skills

Backend service design

Technical leadership

Scalable APIs development

Microservices architecture

Containerization technologies

Tools

DynamoDB

PostgreSQL

Kotlin

Java

Job description

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.

We are seeking a Staff Software Engineer to join our Payments team to build out our unified payment processing solution. The platform offers a single, integrated service for payment acceptance across various channels and supports a configurable enterprise approach.

A Day In The Life (Responsibilities)

• Plan, design, build, and deliver features for Toast’s payments products
• Plan, develop, and implement best practices such as automated test suites to ensure the code shipped to our customers meets the highest quality standards
• Roll features out to customers, including monitoring for success
• Collaborate with PM and UX on the definition and design of features
• Collaborate and partner with a wide array of teams across Toast to spread knowledge inter‑ and intra‑team
• Lead and work with experienced engineers to deliver design and code reviews

Requirements

• 8+ years of experience in designing and implementing robust backend services
• Ability to step into a technical leadership role on the team, guiding, coaching, and mentoring more junior engineers on best practices in architecture, design, coding, testing, and deployment
• Proven ability to design and develop scalable and secure APIs that integrate with various internal and external systems
• Applied knowledge of best practices in API lifecycle management, including versioning, documentation, and deprecation strategies, with the ability to share this amongst the team and peers
• 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
• Familiarity with AI‑augmented development workflows and tools (e.g., Claude Code, GitHub Copilot, Codex, or similar)

Benefits

We provide competitive compensation and benefits programs that help attract, retain, and motivate the best and brightest people in our industry. Our total rewards package includes comprehensive medical, dental, and vision coverage, retirement plans, generous paid time off, and flexibility to support a healthy lifestyle.

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