Senior Software Engineer, Fullstack

Toast

Senior Software Engineer working in fullstack development for Toast’s New Ventures team. Addressing critical operator needs and contributing to a new generation of products and business lines.

Posted 7/2/2026full-timeNew York City • Massachusetts, New York • 🇺🇸 United StatesSenior💰 $159,000 - $254,000 per yearWebsite

Tech Stack

Tools & technologies

Distributed SystemsJavaKotlinReact

About the role

Key responsibilities & impact

Be a strong independent fullstack contributor for a new team to address critical operator needs currently unmet by Toast. Pair closely with Principal and Staff engineers to ship our roadmap.
Bring frontend expertise to the team, establishing and advocating for best practices in frontend patterns to elevate our UI architecture and development standards.
Contribute to the architecture and implementation of key features and components for the New Venture across the Toast codebase.
Understand operator needs and contribute to the team’s business strategy.
Collaborate closely with New Ventures Leads to successfully launch an MVP and facilitate its scalable adoption by a broad customer base.
Navigate diverse codebases across disciplines to consistently deliver high-quality code within established timelines.
Demonstrate a high degree of ownership in all aspects of development.
Leverage cutting edge AI tools to enhance your development workflow, improve velocity, and help pioneer new approaches to building - contributing to a culture of innovation and productivity across the team.

Requirements

What you’ll need

Proficiency in React and modern frontend frameworks
Proficiency in Kotlin (preferred) or Java
A track record of significant technical impact on your team.
Experience in 0 -> 1 builds.
Strong experience with frontend patterns and architecture, with a proven ability to advise others on building scalable and maintainable frontend solutions.
Hands-on experience in working within complex, large-scale distributed systems in production environments.
Experience in distributed systems, asynchronous messaging, event-driven architecture, APIs, and integration patterns, especially as they relate to front end clients.
Demonstrated ability to deliver clean, maintainable, and resilient code that withstands the test of time.
Exceptional communication and collaboration skills.
Experience in communicating technical designs within their team.
Act as a collaborative and solution-oriented partner to leadership and colleagues.

Benefits

Comp & perks

competitive compensation and benefits programs
cash compensation (overtime, bonus/commissions if eligible)
equity

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ReactKotlinJavaFrontend PatternsAsynchronous MessagingEvent-Driven ArchitectureAPIsIntegration PatternsClean Code PracticesScalable Solutions

Soft Skills

Exceptional CommunicationCollaborationSolution-Oriented Mindset