Senior Software Engineer – Java Full Stack

About the role

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.

A day in the life (Responsibilities)

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Independently design, develop and implement features across the full stack with minimal guidance.

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Develop and maintain backend services using Java, Spring Boot, Kotlin or .NET.

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Build and enhance frontend applications using React or Angular.

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Maintain a balanced full-stack contribution, with approximately 70–80% backend and 20–30% frontend development.

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Design, develop and consume RESTful APIs and integrate with internal systems.

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Build scalable, reliable and maintainable microservices and application components.

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Apply object-oriented programming principles, appropriate design patterns and clean coding practices.

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Participate in low-level design, high-level design and technical architecture discussions.

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Identify and resolve performance bottlenecks, production issues and application defects.

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Demonstrate practical understanding of multithreading, concurrency and data consistency.

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Participate in code reviews, testing and engineering quality improvements.

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Collaborate with Product Managers, UX designers, QA and engineering teams.

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Take ownership of assigned features from requirements through development, testing and production release.

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Use AI-assisted development tools such as Claude Code, Cursor or similar tools to improve engineering productivity and quality.

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Communicate progress, risks, technical decisions and dependencies effectively.

What you'll need to thrive (Requirements):

- A minimum of Bachelor’s degree in any area, or any other related discipline.

- 6+ years of experience in software or full-stack development.

- Strong hands-on experience with frontend frameworks such as React or Angular.

- Proven professional hands-on experience developing backend applications using Java and Spring Boot, or an accepted equivalent such as Kotlin or .NET.

- Practical working knowledge of Core Java, OOP, collections, exception handling and design patterns.

- Practical understanding of thread safety, synchronisation, race conditions and concurrent data access.

- Experience building and consuming RESTful APIs.

- Professional experience contributing to LLD, HLD or application architecture.

- Working Experience in SQL and NoSQL databases, including basic schema design and querying.

- Must have hands-on professional working experience with AWS and Amazon DynamoDB in production applications.